2012 International Conference on Communication and Signal Processing最新文献

Performance of preprocessing-aided relay-assisted uplink communication 预处理辅助中继辅助上行通信性能

2012 International Conference on Communication and Signal Processing Pub Date : 2012-04-04 DOI: 10.1109/ICCSP.2012.6208398

S. Ravichandran, P. Nagaradjane, P. Selvam, Sriram Ravichandran, N. Srinivasan

{"title":"Performance of preprocessing-aided relay-assisted uplink communication","authors":"S. Ravichandran, P. Nagaradjane, P. Selvam, Sriram Ravichandran, N. Srinivasan","doi":"10.1109/ICCSP.2012.6208398","DOIUrl":"https://doi.org/10.1109/ICCSP.2012.6208398","url":null,"abstract":"In this paper, we study the performance of cooperative diversity aided uplink (UL) communications with fixed infrastructure based decode and forward (DF) relays each equipped with multiple antennas. Source mobile stations (MSs) exploit these infrastructure based relays to communicate with the base station (BS). The links D and T connecting the source MS to the BS and the source MS to the relays, respectively are assumed to be frequency non-selective and the link R from the relays to the BS is assumed to experience Nakagami-m fading. Specifically, in this paper, we investigate the performance of cooperative diversity in the context of UL communications with singular value decomposition (SVD) based transmitter preprocessing (TP) at the relays to mitigate multi-user interference (MUI) at the BS for two cases, (i) the relays are far away from each other so that MUI at the relays is negligible and (ii) the relays are closer to each other so that MUI is dominant. Our simulation studies show that this TP aided relay diversity system performs well in multi-user interference limited environment by completely eliminating the uplink MUI. Moreover, this approach results in better achievable bit error rate (BER) than conventional cooperative diversity system employing multiuser detection (MUD).","PeriodicalId":320235,"journal":{"name":"2012 International Conference on Communication and Signal Processing","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125808323","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}

引用次数: 0

Analysis of various power allocation algorithms for wireless networks 无线网络中各种功率分配算法的分析

2012 International Conference on Communication and Signal Processing Pub Date : 2012-04-04 DOI: 10.1109/ICCSP.2012.6208409

P. Mangayarkarasi, M. Ramya, S. Jayashri

引用次数: 7

Fuzzy logic controller for autonomous navigation 自主导航模糊逻辑控制器

2012 International Conference on Communication and Signal Processing Pub Date : 2012-04-04 DOI: 10.1109/ICCSP.2012.6208399

Tamilarasi Muthu, Thierry Gloude, Sivashankar Swaminathan, Satish Kumar, S. I. Swam

{"title":"Fuzzy logic controller for autonomous navigation","authors":"Tamilarasi Muthu, Thierry Gloude, Sivashankar Swaminathan, Satish Kumar, S. I. Swam","doi":"10.1109/ICCSP.2012.6208399","DOIUrl":"https://doi.org/10.1109/ICCSP.2012.6208399","url":null,"abstract":"In this correspondence, we present the performance of a low cost, fuzzy logic based controller for autonomous navigation in which the controller makes the system move through obstacles without human intervention in an efficient manner. The obstacle is sensed using a proximity sensor. We have determined the turning angle as a function of distance between the sensor and the obstacle. We evaluated the fuzzy rules for different sets of conditions. Our simulation study shows that the fuzzy algorithm outperforms the classical algorithms such as steer away from centre and steer away from surface for autonomous navigation. Further, in this correspondence, we present the way we developed the fuzzy logic controller along with liquid crystal display (LCD) controller, universal asynchronous receiver transmitter (UART), American standard code for information interchange (ASCII) to binary converter and binary to ASCII converter using verilog and implemented in Spartan 3E field programmable gate array (FPGA). It is extensively demonstrated through the implementation the way a data intensive algorithm can be coded using a hardware description language and tested on an FPGA before being tapped out into an integrated circuit (IC) in a manufacturing process.","PeriodicalId":320235,"journal":{"name":"2012 International Conference on Communication and Signal Processing","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130535319","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}

引用次数: 14

Improving link quality using OSPF routing protocol in a stable Wi-Fi mesh network 在稳定的Wi-Fi网状网络中使用OSPF路由协议提高链路质量

2012 International Conference on Communication and Signal Processing Pub Date : 2012-04-04 DOI: 10.1109/ICCSP.2012.6208414

G. Merlin Sheeba, A. Nachiappan, P. S. L. Gokulnath

引用次数: 6

Performance analysis in IEEE 802.16j Mobile Multi-hop Relay networks (MMR) IEEE 802.16j移动多跳中继网络(MMR)性能分析

2012 International Conference on Communication and Signal Processing Pub Date : 2012-04-04 DOI: 10.1109/ICCSP.2012.6208406

P. Mangayarkarasi, K. Amsalakshmi, S. Jayashri

引用次数: 1

A novel gesture based graphical authentication using bounding box and corner detection algorithm 基于边界框和角点检测算法的基于手势的图形认证

2012 International Conference on Communication and Signal Processing Pub Date : 2012-04-04 DOI: 10.1109/ICCSP.2012.6208405

G. Niranjana, K. Dawn

引用次数: 5

Speech recognition based wireless automation of home loads with fault identification for physically challenged 基于语音识别的家庭负荷无线自动化与残疾人士故障识别

2012 International Conference on Communication and Signal Processing Pub Date : 2012-04-04 DOI: 10.1109/ICCSP.2012.6208408

A. Gnanasekar, P. Jayavelu, V. Nagarajan

{"title":"Speech recognition based wireless automation of home loads with fault identification for physically challenged","authors":"A. Gnanasekar, P. Jayavelu, V. Nagarajan","doi":"10.1109/ICCSP.2012.6208408","DOIUrl":"https://doi.org/10.1109/ICCSP.2012.6208408","url":null,"abstract":"The design of this project helps in providing a fool proof solution for physically challenged to control their home appliances by giving voice commands through personal computer in a wireless environment. When automating a home load not available in the visible range, Fault identification system in this design helps the user to ensure that their home appliances had gone exactly ON or OFF or undergone FAULT by getting the status from load end, unlike the other design that gets the status at user end which may give a false indication, when power supply is not available for the particular load or when load get open circuited (due to wire discontinuity or open fuse condition). During user screen navigation and controlling home appliances voice output of the current screen information and status of the automated appliances enables visually impaired person to use the system to control their home appliances. Navigation of the screen by giving voice commands enables paralyzed person and person who lost their hands in an unfortunate accident to control their home loads along with normal person. For achieving wireless environment low cost zigbee is used. To provide security based authentication RFID is used. Each home load will be having two commands ON and OFF commands, Automation of 20 loads such as mixer, grinder, TV, refrigerator, fan, light, AC etc..., has been tested by giving 40 voice commands through personal computer. When user creates his own profile and automates the load speech recognition accuracy of more than 90% is achieved. Other people who were allowed to automate the load by the user can use user profile and achieve a speech recognition accuracy of 75% in the same personal computer.","PeriodicalId":320235,"journal":{"name":"2012 International Conference on Communication and Signal Processing","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124219867","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}

引用次数: 30

Joint VBLAST/STBC assisted MIMO MC-IDMA system in frequency selective channels: Performance results 频率选择信道中VBLAST/STBC联合辅助MIMO MC-IDMA系统:性能结果

2012 International Conference on Communication and Signal Processing Pub Date : 2012-04-04 DOI: 10.1109/ICCSP.2012.6208412

K. S. Vishvaksenan, R. Seshasayanan, Y. Krishnamoorthy

{"title":"Joint VBLAST/STBC assisted MIMO MC-IDMA system in frequency selective channels: Performance results","authors":"K. S. Vishvaksenan, R. Seshasayanan, Y. Krishnamoorthy","doi":"10.1109/ICCSP.2012.6208412","DOIUrl":"https://doi.org/10.1109/ICCSP.2012.6208412","url":null,"abstract":"In this paper, we evaluate the performance of multi carrier interleave division multiple access (MC-IDMA) system supported by joint transmit scheme employing Vertical Bell Laboratories Layered space-time architecture (VBLAST) and Space-Time Block Code (STBC) over correlated frequency selective channels. Spatial multiplexing and spatial diversity can be achieved by combing VBLAST and STBC processing. In IDMA, user specific interleaving pattern is used to distinguish different users as against signature sequence in the conventional code division multiple access (CDMA) system. In MC-IDMA system, the multi carrier is realized by orthogonal frequency division multiplexing (OFDM), which can eliminate the effects of time dispersion. At the mobile station (MS), non-linear multi-user detection (MUD) based on zero forcing (ZF) rule is employed to mitigate the effects of multiple access interference (MAI) and multi stream interference (MSI) in the context of downlink multi input multi output (MIMO) MC-IDMA system. In particular, we investigate the effects of three types of delay-spread distributions pertaining to Stanford university interim (SUI) channel models in MIMO MC-IDMA system. We also compare the performance of the considered system with double space-time transmit diversity (DSTTD) aided MC-IDMA system. It is demonstrated through computer simulations that coded MC-IDMA system with joint VBLAST/STBC processing is capable of achieving better bit error rate (BER) as compared to DSTTD system.","PeriodicalId":320235,"journal":{"name":"2012 International Conference on Communication and Signal Processing","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122105414","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}

引用次数: 3

Transmitter preprocessing aided inter-cell relay cooperation for interference management in downlink communications 发射机预处理辅助小区间中继合作用于下行通信中的干扰管理

2012 International Conference on Communication and Signal Processing Pub Date : 2012-04-04 DOI: 10.1109/ICCSP.2012.6208393

N. Srinivasan, P. Nagaradjane, S. Swaminathan, S. Ravichandran, Sriram Ravichandran

{"title":"Transmitter preprocessing aided inter-cell relay cooperation for interference management in downlink communications","authors":"N. Srinivasan, P. Nagaradjane, S. Swaminathan, S. Ravichandran, Sriram Ravichandran","doi":"10.1109/ICCSP.2012.6208393","DOIUrl":"https://doi.org/10.1109/ICCSP.2012.6208393","url":null,"abstract":"In this correspondence, we investigate the performance of transmitter preprocessing (TP) aided relay assisted multi-cell downlink (DL) communications where, co-channel interference (CCI) due to the co-located relays in the adjacent cells is a major channel impairment. The TP considered in our work needs the channel impulse response (CIR) matrix of all the interfering relays which is obtained by assuming the so called `inter-cell relay cooperation'. Further, the TP employed in our work is based on the regularized block diagonalization (RBD) approach. We also analyze the performance of the considered system with the aid of an optimal power allocation (OPA) regime. Our simulation study shows that TP aided inter-cell relay cooperation assisted DL communications can provide better achievable bit error rate (BER) compared to a conventional relay assisted system invoking linear multi-user detection (MUD) at the mobile terminals (MTs) for signal detection. Moreover, when OPA regime is invoked, the performance of the system in terms of achievable BER is considerably better than a system without OPA.","PeriodicalId":320235,"journal":{"name":"2012 International Conference on Communication and Signal Processing","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114720146","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}

引用次数: 0

IEEE 802.21 media independent handover mechanism for heterogeneous networks 异构网络的IEEE 802.21媒体独立切换机制

2012 International Conference on Communication and Signal Processing Pub Date : 2012-04-04 DOI: 10.1109/ICCSP.2012.6208415

S. Tamilselvan, C. Tamizhselvan, Assistant Professor, M. Tech Student

引用次数: 1