Pub Date : 2015-09-03DOI: 10.1109/EIC.2015.7230711
Nidhi Dhawale
Popular lossless data compression algorithms like DEFLATE and GZIP use Huffman encoding method as the primary tool for compression. Data compression or signal compression plays a vital role in signal processing. This paper aims to explain Huffman encoding method for lossless data compression, its functionality is demonstrated using MATLAB tool and simulation is done over simulation software with the program written in VHDL. The need of optimization has given wide variations in Huffman encoding and decoding process. The vital factors that have to be focused on for achieving optimization in the codes generated by traditional Huffman encoders are also evaluated and discussed in this paper.
{"title":"Implementation of Huffman algorithm and study for optimization","authors":"Nidhi Dhawale","doi":"10.1109/EIC.2015.7230711","DOIUrl":"https://doi.org/10.1109/EIC.2015.7230711","url":null,"abstract":"Popular lossless data compression algorithms like DEFLATE and GZIP use Huffman encoding method as the primary tool for compression. Data compression or signal compression plays a vital role in signal processing. This paper aims to explain Huffman encoding method for lossless data compression, its functionality is demonstrated using MATLAB tool and simulation is done over simulation software with the program written in VHDL. The need of optimization has given wide variations in Huffman encoding and decoding process. The vital factors that have to be focused on for achieving optimization in the codes generated by traditional Huffman encoders are also evaluated and discussed in this paper.","PeriodicalId":101532,"journal":{"name":"2014 International Conference on Advances in Communication and Computing Technologies (ICACACT 2014)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117347091","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 : 2015-09-03DOI: 10.1109/EIC.2015.7230697
S. Magdum, S. Bidwai
In the wireless communication field we are dealing with new emerging technologies and applications. Due to large no. of applications we are scarcity of radio spectrum. Thus, spectrum utilization is very important issue nowadays. In order to utilize the radio spectrum and increase the efficiency of the wireless communication system we need to design a compact system. The purpose of our project is to design an OFDM based cognitive radio system and analyze the performance of the system in terms various channel parameter over different fading channels. Initially we are have designed and implemented this system and then by setting different channel environment as well as system parameters we have observed efficiency of the system in terms of bit error rate and other parameters. By varying system parameters and setting the different channel environment we can observe the behavior of the system.
{"title":"“Design and implementation of OFDM based cognitive radio system and its analysis”","authors":"S. Magdum, S. Bidwai","doi":"10.1109/EIC.2015.7230697","DOIUrl":"https://doi.org/10.1109/EIC.2015.7230697","url":null,"abstract":"In the wireless communication field we are dealing with new emerging technologies and applications. Due to large no. of applications we are scarcity of radio spectrum. Thus, spectrum utilization is very important issue nowadays. In order to utilize the radio spectrum and increase the efficiency of the wireless communication system we need to design a compact system. The purpose of our project is to design an OFDM based cognitive radio system and analyze the performance of the system in terms various channel parameter over different fading channels. Initially we are have designed and implemented this system and then by setting different channel environment as well as system parameters we have observed efficiency of the system in terms of bit error rate and other parameters. By varying system parameters and setting the different channel environment we can observe the behavior of the system.","PeriodicalId":101532,"journal":{"name":"2014 International Conference on Advances in Communication and Computing Technologies (ICACACT 2014)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126633085","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 : 2015-09-03DOI: 10.1109/EIC.2015.7230733
P. Bhor, R. Arokia Priya, P. Malathi
Soft-core processor's implemented on an FPGA are now days becoming very economical. These can be customized according to special needs and demands. Customization according to the application can be done using soft-core's. But there exists a lot of overhead in reimplementing and downloading the core again to the FPGA, if in case any changes are required in the code. Hence a new technique to overcome this drawback is proposed here. This system is made up of three vital blocks. First is the soft-core UART. Second is the tool for writing assembly code at the user end. Third is the processor coded in verilog on an FPGA. The GUI will compile the assembly code and will send it through UART to the FPGA, where the processor is implemented. This way the processor can be loaded at run time.
{"title":"Designing customized MIPS soft-core and configuring it at run time","authors":"P. Bhor, R. Arokia Priya, P. Malathi","doi":"10.1109/EIC.2015.7230733","DOIUrl":"https://doi.org/10.1109/EIC.2015.7230733","url":null,"abstract":"Soft-core processor's implemented on an FPGA are now days becoming very economical. These can be customized according to special needs and demands. Customization according to the application can be done using soft-core's. But there exists a lot of overhead in reimplementing and downloading the core again to the FPGA, if in case any changes are required in the code. Hence a new technique to overcome this drawback is proposed here. This system is made up of three vital blocks. First is the soft-core UART. Second is the tool for writing assembly code at the user end. Third is the processor coded in verilog on an FPGA. The GUI will compile the assembly code and will send it through UART to the FPGA, where the processor is implemented. This way the processor can be loaded at run time.","PeriodicalId":101532,"journal":{"name":"2014 International Conference on Advances in Communication and Computing Technologies (ICACACT 2014)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114462853","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 : 2015-09-03DOI: 10.1109/EIC.2015.7230710
Ketan N. Kanere, A. Joshi
In this paper architecture of real time messaging server is proposed to support two-way client-server interactions. Here, the duplex web service acts as a service broker between the clients and the server. It selects dynamically the Web service based on the client profile, Web service registry and runtime service status. The Real Time Messaging Framework will dynamically configure into a Client Proxy to maintain communication, which can be real time text, audio or video. Due to the duplex web services, overhead will be reduced at the server side, at the same time push back service, which is a part of the two-way interaction of the web service, will pass the message to other client in the network. In the whole process, emphasis will be on increasing the data transfer speed and efficiency. Thus, use of a web service in a chat server will make it work better and faster in distributed environment.
{"title":"Architecture of Real Time Messaging server using duplex web services","authors":"Ketan N. Kanere, A. Joshi","doi":"10.1109/EIC.2015.7230710","DOIUrl":"https://doi.org/10.1109/EIC.2015.7230710","url":null,"abstract":"In this paper architecture of real time messaging server is proposed to support two-way client-server interactions. Here, the duplex web service acts as a service broker between the clients and the server. It selects dynamically the Web service based on the client profile, Web service registry and runtime service status. The Real Time Messaging Framework will dynamically configure into a Client Proxy to maintain communication, which can be real time text, audio or video. Due to the duplex web services, overhead will be reduced at the server side, at the same time push back service, which is a part of the two-way interaction of the web service, will pass the message to other client in the network. In the whole process, emphasis will be on increasing the data transfer speed and efficiency. Thus, use of a web service in a chat server will make it work better and faster in distributed environment.","PeriodicalId":101532,"journal":{"name":"2014 International Conference on Advances in Communication and Computing Technologies (ICACACT 2014)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128763307","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 : 2015-09-03DOI: 10.1109/EIC.2015.7230728
S. P. Bansu, S. Govilkar, J. Bakal
Over the years, the volume of information available through the World Wide Web has been increasing continuously; unfortunately, the unstructured nature and huge volume of information accessible over networks have made it increasingly difficult to find the relevant information. The information retrieval techniques commonly used are based on keywords, wherein provided keyword list doesn't consider the semantic relationship between keywords nor it consider the meaning of words and phrases. With such system, users frequently have problems expressing their information needs and translation those needs into requests. To overcome the limitations of keyword-based information retrieval, one must think of introducing conceptual knowledge to information retrieval which will help users to formulate their request. The semantic knowledge attached to information is united by means of ontologies. The mapping of concepts in information into conceptual models i.e. ontology appears to be useful method for moving from keyword based to concept based information retrieval. This paper proposes conceptual framework for Ontology Based Information Retrieval System.
{"title":"Conceptual framework for Ontology Based Information Retrieval System for Indian regional language","authors":"S. P. Bansu, S. Govilkar, J. Bakal","doi":"10.1109/EIC.2015.7230728","DOIUrl":"https://doi.org/10.1109/EIC.2015.7230728","url":null,"abstract":"Over the years, the volume of information available through the World Wide Web has been increasing continuously; unfortunately, the unstructured nature and huge volume of information accessible over networks have made it increasingly difficult to find the relevant information. The information retrieval techniques commonly used are based on keywords, wherein provided keyword list doesn't consider the semantic relationship between keywords nor it consider the meaning of words and phrases. With such system, users frequently have problems expressing their information needs and translation those needs into requests. To overcome the limitations of keyword-based information retrieval, one must think of introducing conceptual knowledge to information retrieval which will help users to formulate their request. The semantic knowledge attached to information is united by means of ontologies. The mapping of concepts in information into conceptual models i.e. ontology appears to be useful method for moving from keyword based to concept based information retrieval. This paper proposes conceptual framework for Ontology Based Information Retrieval System.","PeriodicalId":101532,"journal":{"name":"2014 International Conference on Advances in Communication and Computing Technologies (ICACACT 2014)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133993374","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 : 2015-09-03DOI: 10.1109/EIC.2015.7230724
Nithu Mangalath, R. Priya, P. Malathi
Floating point multiplication is of key importance to many modern applications. These applications usually involve floating point calculations with single and/or double precision format. For this reason, most modern processors have hardware support for single precision and double precision floating point multiplication. Achieving this goal however, usually affects the throughput since most FPUs convert the single precision operands to double precision and then translate again the result to single precision format. This output and precision is inadequate for many scientific computations like modeling of climatic conditions, processing of digital signals, graphic accelerators etc. All these higher level applications uses quadruple precision floating point arithmetic. The quadruple precision arithmetic specifications was included in the IEEE 754-2008 revised standard. Its precision is twice as compared to the double precision format. The design proposed in this paper performs all the three precision multiplication operation. The universal floating point multiplier is implemented using Vedic mathematics (Nikhilam Navatascaramam Dasatah Sutra).
{"title":"An efficient universal multi-mode floating point multiplier using Vedic mathematics","authors":"Nithu Mangalath, R. Priya, P. Malathi","doi":"10.1109/EIC.2015.7230724","DOIUrl":"https://doi.org/10.1109/EIC.2015.7230724","url":null,"abstract":"Floating point multiplication is of key importance to many modern applications. These applications usually involve floating point calculations with single and/or double precision format. For this reason, most modern processors have hardware support for single precision and double precision floating point multiplication. Achieving this goal however, usually affects the throughput since most FPUs convert the single precision operands to double precision and then translate again the result to single precision format. This output and precision is inadequate for many scientific computations like modeling of climatic conditions, processing of digital signals, graphic accelerators etc. All these higher level applications uses quadruple precision floating point arithmetic. The quadruple precision arithmetic specifications was included in the IEEE 754-2008 revised standard. Its precision is twice as compared to the double precision format. The design proposed in this paper performs all the three precision multiplication operation. The universal floating point multiplier is implemented using Vedic mathematics (Nikhilam Navatascaramam Dasatah Sutra).","PeriodicalId":101532,"journal":{"name":"2014 International Conference on Advances in Communication and Computing Technologies (ICACACT 2014)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124453271","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 : 2015-09-03DOI: 10.1109/EIC.2015.7230745
G. Jain, Keerti Vyas, V. Maurya, Anu Mehra
Output of SRAM memory circuit is very small i.e. in few milli volts. While reading logic 1 sometimes it is read as logic 0. Due to this malfunctioning of circuit, problem of hazards occur. To overcome this problem we use sense amplifiers. The work of sense amplifier is to sense low power signal from bit line of SRAM memory circuit and amplify the small voltage swing to recognizable logic levels so that data can be interpreted clearly by logic outside the memory. Here we have reduced the delay of the sense amplifier by optimizing the supply voltage i.e. VDD. For this purpose tradeoff between delays, VDD and offset voltage has been done. We have examined the results using IC flow tool.
{"title":"Slew rate and delay optimization of sense amplifier using tradeoff between supply voltage and threshold","authors":"G. Jain, Keerti Vyas, V. Maurya, Anu Mehra","doi":"10.1109/EIC.2015.7230745","DOIUrl":"https://doi.org/10.1109/EIC.2015.7230745","url":null,"abstract":"Output of SRAM memory circuit is very small i.e. in few milli volts. While reading logic 1 sometimes it is read as logic 0. Due to this malfunctioning of circuit, problem of hazards occur. To overcome this problem we use sense amplifiers. The work of sense amplifier is to sense low power signal from bit line of SRAM memory circuit and amplify the small voltage swing to recognizable logic levels so that data can be interpreted clearly by logic outside the memory. Here we have reduced the delay of the sense amplifier by optimizing the supply voltage i.e. VDD. For this purpose tradeoff between delays, VDD and offset voltage has been done. We have examined the results using IC flow tool.","PeriodicalId":101532,"journal":{"name":"2014 International Conference on Advances in Communication and Computing Technologies (ICACACT 2014)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129531681","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 : 2015-09-03DOI: 10.1109/EIC.2015.7230705
J. Kori, Leena Govekar
This paper proposes a rectangular printed monopole antenna where systematic study has been carried out to increase the bandwidth of the antenna. A few techniques are applied to obtain large impedance bandwidth for printed rectangular monopole antenna with reduced substrate size. With proper optimisation of slot dimensions and microstrip line feed position gives increased impedance bandwidth. Simple printed rectangular antenna, without slot and offset feed, shows 1.2:1 (1.94 GHz to 2.30 GHz) and 1.65:1(3.5 GHz to 5.8 GHz) impedance bandwidth ratio for VSWR <;= 2 for the first band. Whereas, for various presented band enhancing techniques, Bandwidth increases upto 3.82 GHz from 0.36 GHz. The radiation patterns in azimuthal and elevation planes are reasonably good.
{"title":"Improving bandwidth of printed rectangular monopole antenna","authors":"J. Kori, Leena Govekar","doi":"10.1109/EIC.2015.7230705","DOIUrl":"https://doi.org/10.1109/EIC.2015.7230705","url":null,"abstract":"This paper proposes a rectangular printed monopole antenna where systematic study has been carried out to increase the bandwidth of the antenna. A few techniques are applied to obtain large impedance bandwidth for printed rectangular monopole antenna with reduced substrate size. With proper optimisation of slot dimensions and microstrip line feed position gives increased impedance bandwidth. Simple printed rectangular antenna, without slot and offset feed, shows 1.2:1 (1.94 GHz to 2.30 GHz) and 1.65:1(3.5 GHz to 5.8 GHz) impedance bandwidth ratio for VSWR <;= 2 for the first band. Whereas, for various presented band enhancing techniques, Bandwidth increases upto 3.82 GHz from 0.36 GHz. The radiation patterns in azimuthal and elevation planes are reasonably good.","PeriodicalId":101532,"journal":{"name":"2014 International Conference on Advances in Communication and Computing Technologies (ICACACT 2014)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128155293","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 : 2015-09-03DOI: 10.1109/EIC.2015.7230694
M. Bhujbal, D. Karia, Aditya Desai
A novel broadband printed dipole antenna (PDA), named back to back C shape strips PDA is proposed. This antenna is designed with two C shape asymmetric strips separated by step shape feed gap. This antenna is then simulated and compared with step shaped feed PDA with two rectangular patches. Additionally, the various parameters linked with the proposed antenna design are well simulated and adequately determined. Experimental results show that the proposed back to back C shape strips PDA can operate at a frequency band from 483 MHz to 877 MHz in which the return loss is more than 7.36 dB. The simulated radiation patterns are omnidirectional in nature like a conventional dipole antenna. Particularly, the proposed antenna has a gain varying from 0 to 2.3 dB. Therefore, the proposed antenna is very much compatible to digital TV signal reception applications.
{"title":"Planar dipole antenna design for DTV broadcasting application","authors":"M. Bhujbal, D. Karia, Aditya Desai","doi":"10.1109/EIC.2015.7230694","DOIUrl":"https://doi.org/10.1109/EIC.2015.7230694","url":null,"abstract":"A novel broadband printed dipole antenna (PDA), named back to back C shape strips PDA is proposed. This antenna is designed with two C shape asymmetric strips separated by step shape feed gap. This antenna is then simulated and compared with step shaped feed PDA with two rectangular patches. Additionally, the various parameters linked with the proposed antenna design are well simulated and adequately determined. Experimental results show that the proposed back to back C shape strips PDA can operate at a frequency band from 483 MHz to 877 MHz in which the return loss is more than 7.36 dB. The simulated radiation patterns are omnidirectional in nature like a conventional dipole antenna. Particularly, the proposed antenna has a gain varying from 0 to 2.3 dB. Therefore, the proposed antenna is very much compatible to digital TV signal reception applications.","PeriodicalId":101532,"journal":{"name":"2014 International Conference on Advances in Communication and Computing Technologies (ICACACT 2014)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127287395","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 : 2015-09-03DOI: 10.1109/EIC.2015.7230747
M. Karkare
In this study, a sol-gel method was used to obtain titanium dioxide nanoparticles. Titanium isopropoxide was used as a precursor and Hydrochloric acid was added to adjust the pH of the solution. The sol obtained was dried at 80°C and calcined at 450°C for 3hrs. The UV absorption spectra of synthesized TiO2 sample exhibited strong absorptions below 400 nm. The band gap is estimated using the (αEphot)^2 versus Ephot plots. The band gap was found to be 3.4 eV for the synthesized sample which was larger than 3.2 eV for bulk TiO2. Also XRD analysis was carried out for the sample and the crystal size was calculated by Scherrer's formula. The Scanning Electron Microscope images confirmed the nano size of synthesized particle.
{"title":"Estimation of band gap and particle size of TiO2 nanoparticle synthesized using sol gel technique","authors":"M. Karkare","doi":"10.1109/EIC.2015.7230747","DOIUrl":"https://doi.org/10.1109/EIC.2015.7230747","url":null,"abstract":"In this study, a sol-gel method was used to obtain titanium dioxide nanoparticles. Titanium isopropoxide was used as a precursor and Hydrochloric acid was added to adjust the pH of the solution. The sol obtained was dried at 80°C and calcined at 450°C for 3hrs. The UV absorption spectra of synthesized TiO2 sample exhibited strong absorptions below 400 nm. The band gap is estimated using the (αEphot)^2 versus Ephot plots. The band gap was found to be 3.4 eV for the synthesized sample which was larger than 3.2 eV for bulk TiO2. Also XRD analysis was carried out for the sample and the crystal size was calculated by Scherrer's formula. The Scanning Electron Microscope images confirmed the nano size of synthesized particle.","PeriodicalId":101532,"journal":{"name":"2014 International Conference on Advances in Communication and Computing Technologies (ICACACT 2014)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127441139","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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