Pub Date : 2011-12-01DOI: 10.1109/STUDENT.2011.6089335
M. Hassan, R. Rajkumar, D. Isa, R. Arelhi
The Support Vector Machine is widely used as a classification tool to analyze data and recognize patterns. In certain applications of Support Vector Machine, noisy data can greatly affect accuracy and performance. To improve the accuracy of the system, the Kalman Filter has been proposed as a suitable pre-processing technique which can be implemented before using the Support Vector Machine to classify the information. This system has been tested using a dataset obtained from a pipeline defect monitoring system in the department's pipeline laboratory. This test rig uses long range ultrasonic testing to detect minor defects inside a stainless steel pipe. MATLAB simulations show promising results where Kalman Filter and Support Vector Machine combination in a single system produced higher accuracy compared to the discrete wavelet transform in a noisy environment.
{"title":"Kalman Filter as a pre-processing technique to improve the support vector machine","authors":"M. Hassan, R. Rajkumar, D. Isa, R. Arelhi","doi":"10.1109/STUDENT.2011.6089335","DOIUrl":"https://doi.org/10.1109/STUDENT.2011.6089335","url":null,"abstract":"The Support Vector Machine is widely used as a classification tool to analyze data and recognize patterns. In certain applications of Support Vector Machine, noisy data can greatly affect accuracy and performance. To improve the accuracy of the system, the Kalman Filter has been proposed as a suitable pre-processing technique which can be implemented before using the Support Vector Machine to classify the information. This system has been tested using a dataset obtained from a pipeline defect monitoring system in the department's pipeline laboratory. This test rig uses long range ultrasonic testing to detect minor defects inside a stainless steel pipe. MATLAB simulations show promising results where Kalman Filter and Support Vector Machine combination in a single system produced higher accuracy compared to the discrete wavelet transform in a noisy environment.","PeriodicalId":247351,"journal":{"name":"2011 IEEE Conference on Sustainable Utilization and Development in Engineering and Technology (STUDENT)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132595442","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 : 2011-12-01DOI: 10.1109/STUDENT.2011.6089345
Muhammad Luqman Bin Muhd Zain, Irraivan Elamvazuthi, P. Vasant
Although there have been numerous research on balancing robot; however, limited studies have been carried out on the human transporter. Human transporter is an example of a non-linear system which is difficult to control. This paper examines and analyses on how to control a human transporter by using a fuzzy logic controller technique. The stabilization control of the human transporter is successfully realized by the fuzzy controller.
{"title":"Analysis of fuzzy control for human transporter","authors":"Muhammad Luqman Bin Muhd Zain, Irraivan Elamvazuthi, P. Vasant","doi":"10.1109/STUDENT.2011.6089345","DOIUrl":"https://doi.org/10.1109/STUDENT.2011.6089345","url":null,"abstract":"Although there have been numerous research on balancing robot; however, limited studies have been carried out on the human transporter. Human transporter is an example of a non-linear system which is difficult to control. This paper examines and analyses on how to control a human transporter by using a fuzzy logic controller technique. The stabilization control of the human transporter is successfully realized by the fuzzy controller.","PeriodicalId":247351,"journal":{"name":"2011 IEEE Conference on Sustainable Utilization and Development in Engineering and Technology (STUDENT)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121058427","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 : 2011-12-01DOI: 10.1109/STUDENT.2011.6089344
M. A. Ahamed Khan, Ahamed Khan, K. I. Saharuddin, I. Elamvazuthi, P. Vasant
This paper discusses the configuration of a semi-automated robotic tiling system for floor-tile installation of residential and commercial buildings. The research is motivated by the need to reduce the human fatigue, installation time, cost and while maintaining consistent quality. The technical solution that is deemed feasible and capable of addressing the above mentioned issues is an electrically-powered semi-automated robotic system with omni-directional locomotive capability. The design parameters and system performance are discussed.
{"title":"A semi-automated floor tiling robotic system","authors":"M. A. Ahamed Khan, Ahamed Khan, K. I. Saharuddin, I. Elamvazuthi, P. Vasant","doi":"10.1109/STUDENT.2011.6089344","DOIUrl":"https://doi.org/10.1109/STUDENT.2011.6089344","url":null,"abstract":"This paper discusses the configuration of a semi-automated robotic tiling system for floor-tile installation of residential and commercial buildings. The research is motivated by the need to reduce the human fatigue, installation time, cost and while maintaining consistent quality. The technical solution that is deemed feasible and capable of addressing the above mentioned issues is an electrically-powered semi-automated robotic system with omni-directional locomotive capability. The design parameters and system performance are discussed.","PeriodicalId":247351,"journal":{"name":"2011 IEEE Conference on Sustainable Utilization and Development in Engineering and Technology (STUDENT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116841226","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 : 2011-12-01DOI: 10.1109/STUDENT.2011.6089348
S. Iqbal, S. Lee, M. Kamarol
The conventional pulse frequency modulated (PFM) zero current switching (ZCS) series resonant (SR) inverter fed dc high voltage power supplies have nearly zero switching loss. However, they have limitations like narrow variation of output voltage and poor control at light load. To alleviate these limitations, this paper proposes a multi-output ZCS-SR inverter fed high voltage dc-dc converter. The SR-inverter in the proposed system has four outputs that are connected to a single transformer linked load via four resonant capacitors each of which have distinct capacitance. Due to distinct values of resonant capacitors, the impedance of tank circuit and hence the power transformer rate is different for four outputs. Thus all the four inverter outputs are fed to load in parallel when maximum load power is desired and a single output that has highest tank circuit impedance is fed to load when lowest load power is required and vice versa. For the four inverter outputs there are sixteen possible combinations to feed them to load in parallel, thus the load power increase from its lowest value to highest in sixteen steps. Switching frequency is adjusted within in its narrow limits to adjust the voltage between two nearest steps. The proposed system has been simulated using PSPICE software. The obtained results show that proposed system has several advantages such as wide range of output voltage control, low output voltage ripple over the entire range and low current stress at light load.
{"title":"Multi-output ZCS-SR inverter fed high voltage DC-DC converter","authors":"S. Iqbal, S. Lee, M. Kamarol","doi":"10.1109/STUDENT.2011.6089348","DOIUrl":"https://doi.org/10.1109/STUDENT.2011.6089348","url":null,"abstract":"The conventional pulse frequency modulated (PFM) zero current switching (ZCS) series resonant (SR) inverter fed dc high voltage power supplies have nearly zero switching loss. However, they have limitations like narrow variation of output voltage and poor control at light load. To alleviate these limitations, this paper proposes a multi-output ZCS-SR inverter fed high voltage dc-dc converter. The SR-inverter in the proposed system has four outputs that are connected to a single transformer linked load via four resonant capacitors each of which have distinct capacitance. Due to distinct values of resonant capacitors, the impedance of tank circuit and hence the power transformer rate is different for four outputs. Thus all the four inverter outputs are fed to load in parallel when maximum load power is desired and a single output that has highest tank circuit impedance is fed to load when lowest load power is required and vice versa. For the four inverter outputs there are sixteen possible combinations to feed them to load in parallel, thus the load power increase from its lowest value to highest in sixteen steps. Switching frequency is adjusted within in its narrow limits to adjust the voltage between two nearest steps. The proposed system has been simulated using PSPICE software. The obtained results show that proposed system has several advantages such as wide range of output voltage control, low output voltage ripple over the entire range and low current stress at light load.","PeriodicalId":247351,"journal":{"name":"2011 IEEE Conference on Sustainable Utilization and Development in Engineering and Technology (STUDENT)","volume":"1294 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127138310","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 : 2011-12-01DOI: 10.1109/STUDENT.2011.6089330
Ng Chee Hou, N. Hong, C. K. On, J. Teo
Evolutionary Algorithm (EA) is commonly used to generate optimal Artificial Intelligence (AI) controller. It is a technique used to enhance the performance of generated controller. EA enables the system to evolve, to adapt and learn to give a better output. The implementation of EA into 2D game is not something new. Researchers used gaming platforms to test their own ideology or proposed algorithms. In this paper, a finite state machine which suitable to be used for Infinite Mario Bros game is proposed. The Genetic Algorithm (GA) is used along with the proposed finite state machine to evolve an AI agent that is capable to pass some levels of the game. The experimentation results showed that the finite state machine evolved with GA is able to create a competitive game bot that can pass through at least 3 levels of different game maps. The generated AI controller can guarantee to accomplish the tasks for some levels.
{"title":"Infinite Mario Bross AI using Genetic Algorithm","authors":"Ng Chee Hou, N. Hong, C. K. On, J. Teo","doi":"10.1109/STUDENT.2011.6089330","DOIUrl":"https://doi.org/10.1109/STUDENT.2011.6089330","url":null,"abstract":"Evolutionary Algorithm (EA) is commonly used to generate optimal Artificial Intelligence (AI) controller. It is a technique used to enhance the performance of generated controller. EA enables the system to evolve, to adapt and learn to give a better output. The implementation of EA into 2D game is not something new. Researchers used gaming platforms to test their own ideology or proposed algorithms. In this paper, a finite state machine which suitable to be used for Infinite Mario Bros game is proposed. The Genetic Algorithm (GA) is used along with the proposed finite state machine to evolve an AI agent that is capable to pass some levels of the game. The experimentation results showed that the finite state machine evolved with GA is able to create a competitive game bot that can pass through at least 3 levels of different game maps. The generated AI controller can guarantee to accomplish the tasks for some levels.","PeriodicalId":247351,"journal":{"name":"2011 IEEE Conference on Sustainable Utilization and Development in Engineering and Technology (STUDENT)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129795300","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 : 2011-12-01DOI: 10.1109/STUDENT.2011.6089340
Mohammadjavad Abbasi Abandankeshi, M. A. Latiff
Communication is fundamental capability of nanosesnor in medical and nanomedicine application. Communication by acoustic wave is most useful in nanosesnor mobile network. Acoustic communication between nanosensors in the mobile network has been favorable potential utilization in nanonmedicine, especially in health care, drug delivery and information processing. In this paper, we present the acoustic energy conversion between nanosensor communications that can provide the energy of mobile nodes to transfer the information for long distance. Finally, we present a result of simulation of nanosensor communication for long path with inertial force and show the performance of soft tissue provides acoustic energy in the mobile network to broadcast message for long distance.
{"title":"Acoustic energy conversion for mobile nanosensor network communication","authors":"Mohammadjavad Abbasi Abandankeshi, M. A. Latiff","doi":"10.1109/STUDENT.2011.6089340","DOIUrl":"https://doi.org/10.1109/STUDENT.2011.6089340","url":null,"abstract":"Communication is fundamental capability of nanosesnor in medical and nanomedicine application. Communication by acoustic wave is most useful in nanosesnor mobile network. Acoustic communication between nanosensors in the mobile network has been favorable potential utilization in nanonmedicine, especially in health care, drug delivery and information processing. In this paper, we present the acoustic energy conversion between nanosensor communications that can provide the energy of mobile nodes to transfer the information for long distance. Finally, we present a result of simulation of nanosensor communication for long path with inertial force and show the performance of soft tissue provides acoustic energy in the mobile network to broadcast message for long distance.","PeriodicalId":247351,"journal":{"name":"2011 IEEE Conference on Sustainable Utilization and Development in Engineering and Technology (STUDENT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130408719","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 : 2011-12-01DOI: 10.1109/STUDENT.2011.6089332
Ong Jia Hui, J. Teo, C. K. On
In this paper we present the possibilities of implementing evolution algorithm on a mobile platform. To inspect such possibilities we have created a Pac-man like mobile game that is implemented together with evolutionary programming. Here the interest does not only lie on performing the evolution algorithm on the mobile platform but also to examine the possibilities in implementing interactive evolution and create outputs that are based on the user preferences via reactive feedbacks, thereby creating a game design that is based upon the users' preferences. By explicitly examining the interactive evolution algorithm on a new testing platform, we have successfully created game rules that are based on the users' playing preferences.
{"title":"Interactive evolutionary programming for mobile games rules generation","authors":"Ong Jia Hui, J. Teo, C. K. On","doi":"10.1109/STUDENT.2011.6089332","DOIUrl":"https://doi.org/10.1109/STUDENT.2011.6089332","url":null,"abstract":"In this paper we present the possibilities of implementing evolution algorithm on a mobile platform. To inspect such possibilities we have created a Pac-man like mobile game that is implemented together with evolutionary programming. Here the interest does not only lie on performing the evolution algorithm on the mobile platform but also to examine the possibilities in implementing interactive evolution and create outputs that are based on the user preferences via reactive feedbacks, thereby creating a game design that is based upon the users' preferences. By explicitly examining the interactive evolution algorithm on a new testing platform, we have successfully created game rules that are based on the users' playing preferences.","PeriodicalId":247351,"journal":{"name":"2011 IEEE Conference on Sustainable Utilization and Development in Engineering and Technology (STUDENT)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125576091","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 : 2011-12-01DOI: 10.1109/STUDENT.2011.6089328
N. A. Johari, M. Hariharan, A. Saidatul, S. Yaacob
Physco-physiological conditions like stress and emotional state may affect human's speech production. Different techniques have been proposed such as facial expressions, speech production variation, and physiological signals to detect the emotional/stressed states of a person. For past 2 decades, the determination of an emotional/stressed state through speech has been undergone substantial research and development. Various techniques are used in the literature to classify emotional/stressed states on the basis of speech. In this paper, a feature extraction method using two different wavelet packet filterbank structures which are based on barkscale and equivalent rectangular bandwidth (ERB) scale for identifying the emotional/stressed states of a person. In this study speech samples are taken from Speech Under Simulated and Actual Stress (SUSAS) database. Linear Discriminant analysis (LDA) based classifier is used to test usefulness of suggested features. Experimental result shows that the suggested methods can be used to identify the emotional/stressed states of a person.
{"title":"Multistyle classification of speech under stress using wavelet packet energy and entropy features","authors":"N. A. Johari, M. Hariharan, A. Saidatul, S. Yaacob","doi":"10.1109/STUDENT.2011.6089328","DOIUrl":"https://doi.org/10.1109/STUDENT.2011.6089328","url":null,"abstract":"Physco-physiological conditions like stress and emotional state may affect human's speech production. Different techniques have been proposed such as facial expressions, speech production variation, and physiological signals to detect the emotional/stressed states of a person. For past 2 decades, the determination of an emotional/stressed state through speech has been undergone substantial research and development. Various techniques are used in the literature to classify emotional/stressed states on the basis of speech. In this paper, a feature extraction method using two different wavelet packet filterbank structures which are based on barkscale and equivalent rectangular bandwidth (ERB) scale for identifying the emotional/stressed states of a person. In this study speech samples are taken from Speech Under Simulated and Actual Stress (SUSAS) database. Linear Discriminant analysis (LDA) based classifier is used to test usefulness of suggested features. Experimental result shows that the suggested methods can be used to identify the emotional/stressed states of a person.","PeriodicalId":247351,"journal":{"name":"2011 IEEE Conference on Sustainable Utilization and Development in Engineering and Technology (STUDENT)","volume":"42 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132694539","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 : 2011-12-01DOI: 10.1109/STUDENT.2011.6089324
Roaa A. Mohmmad, T. Ibrahim, M. Begam
This research investigates the possibility of differentiating slaughtered and non-slaughtered goat meat using capacitor. The use of dielectric spectra to distinguish slaughtered and non-slaughtered meat in goat muscle during postmortem period was evaluated. The changes in dielectric properties during meat ageing were analyzed in terms of permittivity for each meat test. For these purposes, capacitance was measured at various frequencies and postmortem times perpendicular to muscle fiber directions. Significant differences in dielectric properties between slaughtered and non-slaughtered tissue were observed in the results making them suitable parameters for properly slaughtered differentiation. The novelty of this research is to construct advice which is able to distinguish between slaughtered and non-slaughtered meat.
{"title":"A capacitive discrimination of slaughtered and non-slaughtered goat meat","authors":"Roaa A. Mohmmad, T. Ibrahim, M. Begam","doi":"10.1109/STUDENT.2011.6089324","DOIUrl":"https://doi.org/10.1109/STUDENT.2011.6089324","url":null,"abstract":"This research investigates the possibility of differentiating slaughtered and non-slaughtered goat meat using capacitor. The use of dielectric spectra to distinguish slaughtered and non-slaughtered meat in goat muscle during postmortem period was evaluated. The changes in dielectric properties during meat ageing were analyzed in terms of permittivity for each meat test. For these purposes, capacitance was measured at various frequencies and postmortem times perpendicular to muscle fiber directions. Significant differences in dielectric properties between slaughtered and non-slaughtered tissue were observed in the results making them suitable parameters for properly slaughtered differentiation. The novelty of this research is to construct advice which is able to distinguish between slaughtered and non-slaughtered meat.","PeriodicalId":247351,"journal":{"name":"2011 IEEE Conference on Sustainable Utilization and Development in Engineering and Technology (STUDENT)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129002230","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 : 2011-12-01DOI: 10.1109/STUDENT.2011.6089336
James Osuru Mark, B. Samir, M. Naufal
Multiple Input Multiple Output (MIMO) systems have appeared as one of the promising approaches for increasing the capacity and lowering symbol or bit error probability of the wireless communication systems without increasing the bandwidth or the transmission power of the system. In this paper, we investigate the average channel capacity for MIMO orthogonal multicarrier direct Sequence Code Division Multiple Access (OMC DS-CDMA) system in Nakagami-m fading environment. We also consider the influence of the normalized space between two adjacent subcarriers of the system in average channel capacity analysis. Gaussian approximation method is employed to model multiuser interference (MUI) which mostly degrades the system performance. Hence, probability density function (PDF) of the instantaneous signal to interference noise ratio (SINR) is derived using Characteristic Function (CF) based method. Therefore, the exact closed form expression for the average channel capacity is derived by taking the expectation of Shannon channel capacity over the PDF of SINR. The results reveal that the average channel capacity of the MIMO OMC DS-CDMA system outperforms that of the conventional OMC DS-CDMA system. Similarly, we observe that MIMO MC DS-CDMA system has better spectral efficiency. Thus, we confirm the numerical results using Monte Carlo simulation technique.
多输入多输出(MIMO)系统是在不增加系统带宽和传输功率的前提下，提高无线通信系统容量和降低码误率的一种很有前途的方法。本文研究了MIMO正交多载波直接序列码分多址(OMC DS-CDMA)系统在Nakagami-m衰落环境下的平均信道容量。在平均信道容量分析中，我们还考虑了系统相邻子载波间归一化空间的影响。多用户干扰(MUI)是影响系统性能的主要因素，采用高斯近似方法对其进行建模。因此，采用基于特征函数的方法推导了瞬时信噪比(SINR)的概率密度函数。因此，通过对Shannon信道容量的期望除以SINR的PDF，可以得到准确的平均信道容量的封闭表达式。结果表明，MIMO OMC - DS-CDMA系统的平均信道容量优于传统OMC - DS-CDMA系统。同样，我们观察到MIMO MC - DS-CDMA系统具有更好的频谱效率。因此，我们用蒙特卡罗模拟技术证实了数值结果。
{"title":"Spectral efficiency for MIMO orthogonal MC DS-CDMA system over Nakagami-m fading channels","authors":"James Osuru Mark, B. Samir, M. Naufal","doi":"10.1109/STUDENT.2011.6089336","DOIUrl":"https://doi.org/10.1109/STUDENT.2011.6089336","url":null,"abstract":"Multiple Input Multiple Output (MIMO) systems have appeared as one of the promising approaches for increasing the capacity and lowering symbol or bit error probability of the wireless communication systems without increasing the bandwidth or the transmission power of the system. In this paper, we investigate the average channel capacity for MIMO orthogonal multicarrier direct Sequence Code Division Multiple Access (OMC DS-CDMA) system in Nakagami-m fading environment. We also consider the influence of the normalized space between two adjacent subcarriers of the system in average channel capacity analysis. Gaussian approximation method is employed to model multiuser interference (MUI) which mostly degrades the system performance. Hence, probability density function (PDF) of the instantaneous signal to interference noise ratio (SINR) is derived using Characteristic Function (CF) based method. Therefore, the exact closed form expression for the average channel capacity is derived by taking the expectation of Shannon channel capacity over the PDF of SINR. The results reveal that the average channel capacity of the MIMO OMC DS-CDMA system outperforms that of the conventional OMC DS-CDMA system. Similarly, we observe that MIMO MC DS-CDMA system has better spectral efficiency. Thus, we confirm the numerical results using Monte Carlo simulation technique.","PeriodicalId":247351,"journal":{"name":"2011 IEEE Conference on Sustainable Utilization and Development in Engineering and Technology (STUDENT)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126532262","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}
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