Pub Date : 2012-12-01DOI: 10.1109/ICCITECHN.2012.6509790
K. N. Babi, Mohammed Rokibul Alam Kotwal, Foyzul Hassan, M. N. Huda
This paper presents automatic speech recognition (ASR) for Bangla (widely used as Bengali) by suppressing the speaker gender types based on local features extracted from an input speech. Speaker-specific characteristics play an important role on the performance of Bangla automatic speech recognition (ASR). Gender factor shows adverse effect in the classifier while recognizing a speech by an opposite gender, such as, training a classifier by male but testing is done by female or vice-versa. To obtain a robust ASR system in practice it is necessary to invent a system that incorporates gender independent effect for particular gender. In this paper, we have proposed a Gender-Independent technique for ASR that focused on a gender factor. The proposed method trains the classifier with the both types of gender, male and female, and evaluates the classifier for the male and female. For the experiments, we have designed a medium size Bangla (widely known as Bengali) speech corpus for both the male and female. The proposed system has showed a significant improvement of word correct rates, word accuracies and sentence correct rates in comparison with the method that suffers from gender effects using. Moreover, it provides the highest level recognition performance by taking a fewer mixture component in hidden Markov model (HMMs).
{"title":"Local feature based gender independent bangla ASR","authors":"K. N. Babi, Mohammed Rokibul Alam Kotwal, Foyzul Hassan, M. N. Huda","doi":"10.1109/ICCITECHN.2012.6509790","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2012.6509790","url":null,"abstract":"This paper presents automatic speech recognition (ASR) for Bangla (widely used as Bengali) by suppressing the speaker gender types based on local features extracted from an input speech. Speaker-specific characteristics play an important role on the performance of Bangla automatic speech recognition (ASR). Gender factor shows adverse effect in the classifier while recognizing a speech by an opposite gender, such as, training a classifier by male but testing is done by female or vice-versa. To obtain a robust ASR system in practice it is necessary to invent a system that incorporates gender independent effect for particular gender. In this paper, we have proposed a Gender-Independent technique for ASR that focused on a gender factor. The proposed method trains the classifier with the both types of gender, male and female, and evaluates the classifier for the male and female. For the experiments, we have designed a medium size Bangla (widely known as Bengali) speech corpus for both the male and female. The proposed system has showed a significant improvement of word correct rates, word accuracies and sentence correct rates in comparison with the method that suffers from gender effects using. Moreover, it provides the highest level recognition performance by taking a fewer mixture component in hidden Markov model (HMMs).","PeriodicalId":127060,"journal":{"name":"2012 15th International Conference on Computer and Information Technology (ICCIT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128265766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.4304/jcp.9.8.1787-1795
Masruba Tasnim, S. Rouf, Mohammad Sohel Rahman
In this paper, we have proposed a CLONALG-based simple heuristics, which is one of the most popular artificial immune system (AIS) models, for the non-unicost set covering problem (SCP). It is well known that SCP is NP-hard problem that can model several real world situations such as crew scheduling in airlines, facility location problem, production planning in industry etc. In real cases, the problem instances can reach huge sizes, making the use of exact algorithms impracticable. So, for finding practically efficient approaches for solving SCP, different kind of heuristic approaches have been applied in the literature. To the best of our knowledge our work here, is the first attempt to solve SCP using Artificial Immune System. We have evaluated the performance of our algorithm on a number of benchmark instances. Computational results have shown that it is capable of producing high-quality solutions.
{"title":"A CLONALG-based approach for the set covering problem","authors":"Masruba Tasnim, S. Rouf, Mohammad Sohel Rahman","doi":"10.4304/jcp.9.8.1787-1795","DOIUrl":"https://doi.org/10.4304/jcp.9.8.1787-1795","url":null,"abstract":"In this paper, we have proposed a CLONALG-based simple heuristics, which is one of the most popular artificial immune system (AIS) models, for the non-unicost set covering problem (SCP). It is well known that SCP is NP-hard problem that can model several real world situations such as crew scheduling in airlines, facility location problem, production planning in industry etc. In real cases, the problem instances can reach huge sizes, making the use of exact algorithms impracticable. So, for finding practically efficient approaches for solving SCP, different kind of heuristic approaches have been applied in the literature. To the best of our knowledge our work here, is the first attempt to solve SCP using Artificial Immune System. We have evaluated the performance of our algorithm on a number of benchmark instances. Computational results have shown that it is capable of producing high-quality solutions.","PeriodicalId":127060,"journal":{"name":"2012 15th International Conference on Computer and Information Technology (ICCIT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127480274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/ICCITECHN.2012.6509800
A. Baki, N. Karmakar
The spectrum below 10 GHz frequency will likely be congested and the spreading of millimeter wave technology in different emerging wireless applications as well as associated increase in energy consumption will be witnessed in the near future. Array antenna technology with higher beam efficiency (BE) and lower side lobe level (SLL) is required in order to increase the coverage area of wireless communication, transmission bit rate and at the same time decrease the energy consumption and interference. It is possible to achieve higher BE and lower SLL of array antenna by implementing different power distributions for different array elements. A new and technically better method of beam forming by implementing the concept of Staircase Power Distribution (SPD) of antenna elements has been investigated and compared with other edge tapering methods for 60 GHz signal. It is found that the Maximum Side Lobe Level (MSLL) is the lowest in SPD among the compared methods and the BE is also equivalent to those of other edge tapering methods. Fabrication of antenna elements with SPD technology is also easier since the number of different power distribution in SPD is least and stepwise uniform. The use of antenna elements in SPD in terms of power distribution is also the best among the compared edge tapering methods.
{"title":"60 GHz array antenna with new method of beam forming","authors":"A. Baki, N. Karmakar","doi":"10.1109/ICCITECHN.2012.6509800","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2012.6509800","url":null,"abstract":"The spectrum below 10 GHz frequency will likely be congested and the spreading of millimeter wave technology in different emerging wireless applications as well as associated increase in energy consumption will be witnessed in the near future. Array antenna technology with higher beam efficiency (BE) and lower side lobe level (SLL) is required in order to increase the coverage area of wireless communication, transmission bit rate and at the same time decrease the energy consumption and interference. It is possible to achieve higher BE and lower SLL of array antenna by implementing different power distributions for different array elements. A new and technically better method of beam forming by implementing the concept of Staircase Power Distribution (SPD) of antenna elements has been investigated and compared with other edge tapering methods for 60 GHz signal. It is found that the Maximum Side Lobe Level (MSLL) is the lowest in SPD among the compared methods and the BE is also equivalent to those of other edge tapering methods. Fabrication of antenna elements with SPD technology is also easier since the number of different power distribution in SPD is least and stepwise uniform. The use of antenna elements in SPD in terms of power distribution is also the best among the compared edge tapering methods.","PeriodicalId":127060,"journal":{"name":"2012 15th International Conference on Computer and Information Technology (ICCIT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125308760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper presents a new technique that allows an instructor/student to bring the hardware construction and the laboratory experiments into the Digital System Lab environment through the Internet without being near the actual equipments. It offers relax time constraints, a cost effective way of opening a Laboratory for 24 hours for students locally in a Laboratory. It also enhances sharing of knowledge, expertise and experience. An experimental unit, called e-Lab, is prototyped and tested for variety of design examples. It consists of a PLD/FPGA Board interfaced with a PC using RS232 interface via customized hardware. The custom hardware uses low cost data acquisition components. A Graphical User Interface (GUI) has been designed for communication between the local PC terminal and the remote e-Lab system. This allows the user to take over the entire control of the system. Students at the local PC can access the Lab PC via internet using Microsoft's ‘Remote Desktop Connection’ facility. The prototype uses a Web Cam to provide a view of the FPGA system operation for the remote user. It ensures the remote student's about correctness of the system operation and enhances confidence through the visual access of the experimental results.
{"title":"Development of a remote digital system laboratory","authors":"Md Liakot Ali, Md. Habibur Rahman, Md. Abu Nayeem Redwanur Rahaman","doi":"10.1109/ICCITECHN.2012.6509761","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2012.6509761","url":null,"abstract":"This paper presents a new technique that allows an instructor/student to bring the hardware construction and the laboratory experiments into the Digital System Lab environment through the Internet without being near the actual equipments. It offers relax time constraints, a cost effective way of opening a Laboratory for 24 hours for students locally in a Laboratory. It also enhances sharing of knowledge, expertise and experience. An experimental unit, called e-Lab, is prototyped and tested for variety of design examples. It consists of a PLD/FPGA Board interfaced with a PC using RS232 interface via customized hardware. The custom hardware uses low cost data acquisition components. A Graphical User Interface (GUI) has been designed for communication between the local PC terminal and the remote e-Lab system. This allows the user to take over the entire control of the system. Students at the local PC can access the Lab PC via internet using Microsoft's ‘Remote Desktop Connection’ facility. The prototype uses a Web Cam to provide a view of the FPGA system operation for the remote user. It ensures the remote student's about correctness of the system operation and enhances confidence through the visual access of the experimental results.","PeriodicalId":127060,"journal":{"name":"2012 15th International Conference on Computer and Information Technology (ICCIT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130658154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/ICCITECHN.2012.6509718
M. S. Sadi, Md. Noor Alam Shuvo, M. Rahman
An important part in the design of real-time systems is the allocation and scheduling of the software tasks onto the hardware architecture. This faces the challenge of meeting deadlines, completion times, earliest start times and tolerating faults. Unfortunately, these processes are far from trivial due to the wide range of complex constraints that typically appear in real-time systems. The lack of edibility and expressive power in existing scheduling frameworks makes it difficult to model the system accurately. Moreover, the designed system must be cost-effective in terms of resource utilization which implies the need for an optimization approach. In order to tackle these deficiencies this paper proposes a schedulable fault-tolerant hardware-software mapping methodology for real time systems. The design optimization approach decides the mapping of jobs to nodes such that the timing constraints of the application are satisfied. Experimental studies show that the proposed method outperforms existing dominant work.
{"title":"Towards a schedulable fault tolerant HW-SW mapping for real time systems","authors":"M. S. Sadi, Md. Noor Alam Shuvo, M. Rahman","doi":"10.1109/ICCITECHN.2012.6509718","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2012.6509718","url":null,"abstract":"An important part in the design of real-time systems is the allocation and scheduling of the software tasks onto the hardware architecture. This faces the challenge of meeting deadlines, completion times, earliest start times and tolerating faults. Unfortunately, these processes are far from trivial due to the wide range of complex constraints that typically appear in real-time systems. The lack of edibility and expressive power in existing scheduling frameworks makes it difficult to model the system accurately. Moreover, the designed system must be cost-effective in terms of resource utilization which implies the need for an optimization approach. In order to tackle these deficiencies this paper proposes a schedulable fault-tolerant hardware-software mapping methodology for real time systems. The design optimization approach decides the mapping of jobs to nodes such that the timing constraints of the application are satisfied. Experimental studies show that the proposed method outperforms existing dominant work.","PeriodicalId":127060,"journal":{"name":"2012 15th International Conference on Computer and Information Technology (ICCIT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126581946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/ICCITECHN.2012.6509796
Saifur Rahaman
Diabetes is one of the major type of disease. It is the very common disease in the modern world. Diabetes is a serious disease that affects almost every organ in the body like heart, eyes, kidney, skin, nerves, blood vassals, foot etc. If left the disease unchecked it will make serious complications including death. However, a proper diagnosis at an early stage can result in significant life saving. Unfortunately, all the physicians are not equally skilled, which can cause for time delay, inaccuracy of the diagnosis. In the present paper, a Decision Support System has been proposed for Diabetes diagnosis. The proposed system is designed and developed by using Netbean7.1's GUI and MySQL server feature with the implementation of The dataset used in this study are the signs, symptoms, risk factors associated with diabetes and the results of physical evaluation of a patient. This system provides a user interactive, menu driven environment. It will ask a bunch of questions about the signs, symptoms and risk factors to the system user and user should give yes or no answer. According to the answer the system will make Decision about the possibility of illness, how much severe it is like slight chance, moderate chance, high chance, very high chance, diabetic or not.
{"title":"Diabetes diagnosis decision support system based on symptoms, signs and risk factor using special computational algorithm by rule base","authors":"Saifur Rahaman","doi":"10.1109/ICCITECHN.2012.6509796","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2012.6509796","url":null,"abstract":"Diabetes is one of the major type of disease. It is the very common disease in the modern world. Diabetes is a serious disease that affects almost every organ in the body like heart, eyes, kidney, skin, nerves, blood vassals, foot etc. If left the disease unchecked it will make serious complications including death. However, a proper diagnosis at an early stage can result in significant life saving. Unfortunately, all the physicians are not equally skilled, which can cause for time delay, inaccuracy of the diagnosis. In the present paper, a Decision Support System has been proposed for Diabetes diagnosis. The proposed system is designed and developed by using Netbean7.1's GUI and MySQL server feature with the implementation of The dataset used in this study are the signs, symptoms, risk factors associated with diabetes and the results of physical evaluation of a patient. This system provides a user interactive, menu driven environment. It will ask a bunch of questions about the signs, symptoms and risk factors to the system user and user should give yes or no answer. According to the answer the system will make Decision about the possibility of illness, how much severe it is like slight chance, moderate chance, high chance, very high chance, diabetic or not.","PeriodicalId":127060,"journal":{"name":"2012 15th International Conference on Computer and Information Technology (ICCIT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131392761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/ICCITECHN.2012.6509745
S. Banik, A. K. Khan, M. Anwer
Stock market prediction has been a challenging task due to the nature of the data which is very noisy and time varying. However, this theory has been faced by many empirical studies and a number of researchers have successfully applied machine learning approaches to predict stock market. The problem studied here is about stock prediction for the use of investors. It is true investors usually get loss because of unclear investment objective and blind investment. This paper proposes to investigate the rough set model, the artificial neural network model and the hybrid artificial neural network model and the rough set model for determining the optimal buy and sell of a share on a Dhaka stock exchange. Confusion matrix is used to evaluate the performance of the observed and predicted classes for selected models. Our experimental result shows that the proposed hybrid model has higher accuracy than the single rough set model and the artificial neural network model. We believe this paper will be useful to stock investors to determine the optimal buy and sell time on Dhaka Stock Exchange.
{"title":"Dhaka stock market timing decisions by hybrid machine learning technique","authors":"S. Banik, A. K. Khan, M. Anwer","doi":"10.1109/ICCITECHN.2012.6509745","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2012.6509745","url":null,"abstract":"Stock market prediction has been a challenging task due to the nature of the data which is very noisy and time varying. However, this theory has been faced by many empirical studies and a number of researchers have successfully applied machine learning approaches to predict stock market. The problem studied here is about stock prediction for the use of investors. It is true investors usually get loss because of unclear investment objective and blind investment. This paper proposes to investigate the rough set model, the artificial neural network model and the hybrid artificial neural network model and the rough set model for determining the optimal buy and sell of a share on a Dhaka stock exchange. Confusion matrix is used to evaluate the performance of the observed and predicted classes for selected models. Our experimental result shows that the proposed hybrid model has higher accuracy than the single rough set model and the artificial neural network model. We believe this paper will be useful to stock investors to determine the optimal buy and sell time on Dhaka Stock Exchange.","PeriodicalId":127060,"journal":{"name":"2012 15th International Conference on Computer and Information Technology (ICCIT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133931698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/ICCITECHN.2012.6509755
Duc-Minh Pham, S. M. Aziz
Low density parity check (LDPC) codes are error-correcting codes that offer huge advantages in terms of coding gain, throughput and power dissipation. Error correction algorithms are often implemented in hardware for fast processing to meet the real-time needs of communication systems. However hardware implementation of LDPC decoders using traditional hardware description language (HDL) based approach is a complex and time consuming task. This paper presents an efficient automated high level approach to designing LDPC decoders using a collection of high level modelling tools. High data rate Multi-Gbps LDPC decoders have been developed and implemented on FPGA using the proposed methodology. These Multi-Gbps LDPC decoders can be utilized in the latest generation of high data rate wireless communication such as WLAN, WiMAX and DVB-S2.
{"title":"An automated design methodology for FPGA-based Multi-Gbps LDPC decoders","authors":"Duc-Minh Pham, S. M. Aziz","doi":"10.1109/ICCITECHN.2012.6509755","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2012.6509755","url":null,"abstract":"Low density parity check (LDPC) codes are error-correcting codes that offer huge advantages in terms of coding gain, throughput and power dissipation. Error correction algorithms are often implemented in hardware for fast processing to meet the real-time needs of communication systems. However hardware implementation of LDPC decoders using traditional hardware description language (HDL) based approach is a complex and time consuming task. This paper presents an efficient automated high level approach to designing LDPC decoders using a collection of high level modelling tools. High data rate Multi-Gbps LDPC decoders have been developed and implemented on FPGA using the proposed methodology. These Multi-Gbps LDPC decoders can be utilized in the latest generation of high data rate wireless communication such as WLAN, WiMAX and DVB-S2.","PeriodicalId":127060,"journal":{"name":"2012 15th International Conference on Computer and Information Technology (ICCIT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130005833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/ICCITECHN.2012.6509717
T. Ahmed, M. M. Ali, S. Ullah
This paper investigates the effect of antenna diversity for a double transmit and multiple receive antenna supported wireless communication system that employs multi user Alamouti's space time block coding (STBC) and maximal ratio combining (MRC) scheme on secured text message transmission. The FEC encoded Alamouti-MRC transmission system under investigation implements RSA cryptographic algorithm and deploys various multi-level digital modulations (16-PSK, 16-DPSK and 16-QAM) techniques over an Additive White Gaussian Noise (AWGN) and Rayleigh Fading Channels. It has been observed from the study that in case of without receive antenna diversity the system shows comparatively worst performance in 16-DPSK scheme and satisfactory performance in 16-QAM. It is noticeable that the system performance is improved with increase in number of receive antenna. The performance analysis shows that with implemented Alamouti-MRC scheme (6 receive antenna) under 16-QAM digital modulation, the system provides excellent performance over a significant low signal to noise ratio (SNR) values.
{"title":"BER performance analysis of a multi user Alamouti-MRC system on secured text message transmission","authors":"T. Ahmed, M. M. Ali, S. Ullah","doi":"10.1109/ICCITECHN.2012.6509717","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2012.6509717","url":null,"abstract":"This paper investigates the effect of antenna diversity for a double transmit and multiple receive antenna supported wireless communication system that employs multi user Alamouti's space time block coding (STBC) and maximal ratio combining (MRC) scheme on secured text message transmission. The FEC encoded Alamouti-MRC transmission system under investigation implements RSA cryptographic algorithm and deploys various multi-level digital modulations (16-PSK, 16-DPSK and 16-QAM) techniques over an Additive White Gaussian Noise (AWGN) and Rayleigh Fading Channels. It has been observed from the study that in case of without receive antenna diversity the system shows comparatively worst performance in 16-DPSK scheme and satisfactory performance in 16-QAM. It is noticeable that the system performance is improved with increase in number of receive antenna. The performance analysis shows that with implemented Alamouti-MRC scheme (6 receive antenna) under 16-QAM digital modulation, the system provides excellent performance over a significant low signal to noise ratio (SNR) values.","PeriodicalId":127060,"journal":{"name":"2012 15th International Conference on Computer and Information Technology (ICCIT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130007771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-01DOI: 10.1109/ICCITECHN.2012.6509772
Md. Mahmudur Rahman, M. T. Islam
In nanoelectronics the speed of the device is the main concern along with their size. The device integrated in nanospace, needs to work faster. The traditional silicon field effect transistors have low sensitivity and low mobility which limit device speed compare to compound semiconductors devices. On the other hand compound metal field effect transistor (MESFET) shows very high cutoff frequency, around 15GHz, for 1 μm channel whereas NMOS shows only 2GHz. The high mobility of GaAs plays the pivotal roles for this enhanced speed of MESFET. Speed of the device also increases for shorter channel length. However fabrication of short channel MESFET needs very complicated lithography process. Self aligned implantation for N+ layer technology (SAINT) is a promising method for fabricating short channel MESFET. To achieve short channel MESFET SAINT method has been opted in this work. In this paper we simulated SAINT short channel MESFET using TCAD tool then evaluate the characteristics of voltage and current for different channel length.
{"title":"Performance analysis of short channel GaAs MESFET fabricated by SAINT method","authors":"Md. Mahmudur Rahman, M. T. Islam","doi":"10.1109/ICCITECHN.2012.6509772","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2012.6509772","url":null,"abstract":"In nanoelectronics the speed of the device is the main concern along with their size. The device integrated in nanospace, needs to work faster. The traditional silicon field effect transistors have low sensitivity and low mobility which limit device speed compare to compound semiconductors devices. On the other hand compound metal field effect transistor (MESFET) shows very high cutoff frequency, around 15GHz, for 1 μm channel whereas NMOS shows only 2GHz. The high mobility of GaAs plays the pivotal roles for this enhanced speed of MESFET. Speed of the device also increases for shorter channel length. However fabrication of short channel MESFET needs very complicated lithography process. Self aligned implantation for N+ layer technology (SAINT) is a promising method for fabricating short channel MESFET. To achieve short channel MESFET SAINT method has been opted in this work. In this paper we simulated SAINT short channel MESFET using TCAD tool then evaluate the characteristics of voltage and current for different channel length.","PeriodicalId":127060,"journal":{"name":"2012 15th International Conference on Computer and Information Technology (ICCIT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129548584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：