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IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)最新文献

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Performance evaluation of OFDM with the compensation technique of the nonlinear distortion using partial transmit sequence and predistortion 利用部分发射序列和预失真对非线性失真进行补偿的OFDM性能评价
IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2002-11-01 DOI: 10.1109/VTC.2001.956851
T. Horiuchi, Weizu Yang, T. Ohtsuki, I. Sasase
{"title":"Performance evaluation of OFDM with the compensation technique of the nonlinear distortion using partial transmit sequence and predistortion","authors":"T. Horiuchi, Weizu Yang, T. Ohtsuki, I. Sasase","doi":"10.1109/VTC.2001.956851","DOIUrl":"https://doi.org/10.1109/VTC.2001.956851","url":null,"abstract":"To improve the bit error rate (BER) performance of the linearized constant power coded OFDM (LCP-COFDM),that is, the compensating technique used for nonlinear distortion, we propose a technique that combines the partial transmit sequence (PTS) technique with the LCP-COFDM technique. By means of computer simulation, we evaluate the BER and power spectrum density (PSD) performances of the proposed technique. In the BER performance evaluation, we consider both cases where the side information of the PTS technique is coded and uncoded by error correction codes. As a result, we show that the proposed technique can improve the BER performance, while keeping very low out-of-band emission.","PeriodicalId":129008,"journal":{"name":"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134064772","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: 4
Improving performance of a space-time turbo code in a Rayleigh fading channel 在瑞利衰落信道中改进空时turbo码的性能
IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-20 DOI: 10.1109/VTC.2001.956542
E. Huang, A. Gatherer, T. Muharemovic, D. Hocevar
{"title":"Improving performance of a space-time turbo code in a Rayleigh fading channel","authors":"E. Huang, A. Gatherer, T. Muharemovic, D. Hocevar","doi":"10.1109/VTC.2001.956542","DOIUrl":"https://doi.org/10.1109/VTC.2001.956542","url":null,"abstract":"Starting with an ordinary parallel concatenated turbo encoder in a block fading Rayleigh channel, we introduce bit-interleaving of the outputs, not for time diversity, but to increase the coding gain. We develop a guideline metric for designing QPSK space-time codes which reveals both the coding and diversity advantage of the systems as well as showing that it is unnecessary to guarantee full space diversity to achieve good performance in Rayleigh fading. Using channel a priori information in the MAP iterations for decoding, we achieve frame error rates within 1 dB of the outage probability with only modest increases in decoding complexity.","PeriodicalId":129008,"journal":{"name":"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133193220","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
Development of a hybrid electric sport utility vehicle 混合动力电动运动型多用途车的开发
IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.957139
M. Parten, T. Maxwell
{"title":"Development of a hybrid electric sport utility vehicle","authors":"M. Parten, T. Maxwell","doi":"10.1109/VTC.2001.957139","DOIUrl":"https://doi.org/10.1109/VTC.2001.957139","url":null,"abstract":"This paper describes the design, fabrication, and test results of the conversion of a General Motors Suburban into a hybrid electric vehicle (HEV). A parallel drive train configuration is utilized with an internal combustion engine running on reformulated gasoline and two electric motors. The overall system is monitored and controlled by a real-time control system. One objective in the design was to minimize changes in the Suburban. design decisions, expected results and actual results are presented.","PeriodicalId":129008,"journal":{"name":"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115167670","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: 8
Performance of a practical RAKE receiver for W-CDMA downlink in the presence of interfering user 一种实用的W-CDMA下行RAKE接收机在干扰用户存在下的性能
IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.956839
B. Soltanian, E. Lohan, M. Renfors
{"title":"Performance of a practical RAKE receiver for W-CDMA downlink in the presence of interfering user","authors":"B. Soltanian, E. Lohan, M. Renfors","doi":"10.1109/VTC.2001.956839","DOIUrl":"https://doi.org/10.1109/VTC.2001.956839","url":null,"abstract":"The RAKE receiver is the most common receiver employed in wideband CDMA (W-CDMA) systems. Traditionally, multiple access interference (MAI) in spread spectrum systems is modelled as white Gaussian noise. This presumption is valid when the number of users is large and interference signals have large spreading factors. But the W-CDMA air interface for 3rd generation mobile communication systems supports low spreading factors, high and variable data rates, which make MAI non-Gaussian. We analyze the bit error rate (BER) performance of a downlink receiver in the presence of an interfering user when the Gaussian assumption does not hold any more. The receiver is a maximum ratio combining RAKE receiver. First we study the performance of the ideal RAKE receiver, which has exact estimates of delays, amplitudes and phases of the multipath components. Then we consider the effect of MAI when non-data aided (NDA) and pilot aided decision directed (PADD) algorithms are used for delay and channel coefficients estimation, respectively. It is shown that imperfect power control can significantly affect the BER performance, while practical single-user channel estimation algorithms, such as the NDA-PADD algorithm, behave well also in the presence of non-Gaussian MAI.","PeriodicalId":129008,"journal":{"name":"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123060180","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: 6
New methodology for defining fixed location area in mobile satellite communication systems 移动卫星通信系统中确定固定定位区域的新方法
IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.956610
K. Narenthiran, R. Tafazolli, B. Evans
{"title":"New methodology for defining fixed location area in mobile satellite communication systems","authors":"K. Narenthiran, R. Tafazolli, B. Evans","doi":"10.1109/VTC.2001.956610","DOIUrl":"https://doi.org/10.1109/VTC.2001.956610","url":null,"abstract":"A new methodology for defining fixed location area in mobile satellite communication systems is proposed and its features are compared with the dynamic location area method in terms of implementation in the network and the mobile terminal.","PeriodicalId":129008,"journal":{"name":"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)","volume":"503 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123067077","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: 2
Region division assignment of orthogonal variable-spreading-factor codes in W-CDMA W-CDMA中正交变扩展因子码的区域划分分配
IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.956528
Rujipun Assarut, K. Kawanishi, U. Yamamoto, Y. Onozato, Masahiko Matsushita
{"title":"Region division assignment of orthogonal variable-spreading-factor codes in W-CDMA","authors":"Rujipun Assarut, K. Kawanishi, U. Yamamoto, Y. Onozato, Masahiko Matsushita","doi":"10.1109/VTC.2001.956528","DOIUrl":"https://doi.org/10.1109/VTC.2001.956528","url":null,"abstract":"This work focuses on the problem of efficient assignment of the orthogonal-variable-spreading-factor (OVSF) codes for multimedia communications in W-CDMA systems. Due to the problem of code blocking in OVSF-code assignment considered by Minn and Siu, and the different probability of requests for each data rate, the OVSF-code assignment algorithms proposed so far cannot efficiently serve the high-rate requests when traffic load is high. Even though Minn and Siu proposed the algorithm to completely eliminate the code blocking, a system implemented with such an algorithm has a lower number of simultaneous voice conversations than the system with the code blocking problem. To efficiently provide the services for all supported rates, we propose an OVSF-code assignment scheme called the region division assignment (RDA). The performance of the proposed RDA scheme is evaluated by simulation for voice and video sources based on the multiple access protocol in UMTS/IMT-2000.","PeriodicalId":129008,"journal":{"name":"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123153751","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: 51
A fast decoding algorithm for Reed-Solomon codes with enhanced burst correcting capability 一种增强突发纠错能力的快速里德-所罗门码译码算法
IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.956443
L. Yin, Jianhua Lu, K. Letaief, Youshou Wu
{"title":"A fast decoding algorithm for Reed-Solomon codes with enhanced burst correcting capability","authors":"L. Yin, Jianhua Lu, K. Letaief, Youshou Wu","doi":"10.1109/VTC.2001.956443","DOIUrl":"https://doi.org/10.1109/VTC.2001.956443","url":null,"abstract":"Based on the properties of cyclic codes, a new decoding algorithm for burst-error-correction is proposed in this paper. This algorithm can effectively correct burst errors with length that approaches to n-k for (n,k) Reed-Solomon (RS) codes. Moreover, due to the use of error locations correlation within a burst, divisions are exempted from the decoding process, achieving a fast decoding algorithm with much less computational complexity compared with existing algorithms. It is shown that the proposed algorithm can be widely used in wireless communications, wireless digital broadcast systems, and so on.","PeriodicalId":129008,"journal":{"name":"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115757436","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
An efficient slot allocation algorithm to accommodate multimedia traffic in CDMA/TDD-based wireless communications systems 基于CDMA/ tdd的无线通信系统中容纳多媒体业务的一种有效的时隙分配算法
IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.956878
H. Yomo, A. Nakata, S. Hara
{"title":"An efficient slot allocation algorithm to accommodate multimedia traffic in CDMA/TDD-based wireless communications systems","authors":"H. Yomo, A. Nakata, S. Hara","doi":"10.1109/VTC.2001.956878","DOIUrl":"https://doi.org/10.1109/VTC.2001.956878","url":null,"abstract":"We propose two time slot allocation algorithms for code division multiple access with time division duplex (CDMA/TDD) systems to efficiently accommodate multimedia traffic. Assuming a practical multiple cell environment and a multimedia service model which consists of several kinds of circuit-switched and packet-switched services with different qualities of service (QoS), we evaluate the average delay of the CDMA/TDD system with the proposed algorithms, and compare the performance with that of CDMA with frequency division duplex (CDMA/FDD) and time division multiple access with TDD (TDMA/TDD) systems. Our computer simulation results show that the CDMA/TDD system with one of the proposed algorithms, which can effectively avoid interference among users with different QoS, can improve the average delay performance as compared with the other systems.","PeriodicalId":129008,"journal":{"name":"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117263342","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: 10
Multimedia integrated and seamless network by a new multiservice terminal 多媒体一体化无缝网络由新型多业务终端组成
IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.957216
H. Harada, M. Fujise, M. Mizuno
{"title":"Multimedia integrated and seamless network by a new multiservice terminal","authors":"H. Harada, M. Fujise, M. Mizuno","doi":"10.1109/VTC.2001.957216","DOIUrl":"https://doi.org/10.1109/VTC.2001.957216","url":null,"abstract":"We newly propose a protocol stack of a multiservice terminal that can handle conventional wireless communication systems as a seamless network. To confirm the feasibility of our proposed stack, we developed a demonstration system that realizes a seamless communication between Japanese Personal Handy Phone system (PHS) and wireless LAN system based on IEEE802.11b, and measured transmission characteristics included the received-signal power of the wireless LAN signal at the multiservice terminal, time-variant state of the multiservice terminal, and the response time when \"ping\" commands are sent to a server.","PeriodicalId":129008,"journal":{"name":"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)","volume":"182 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121089831","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: 4
Performance analysis of coherent DS/CDMA systems with antenna diversity in Rayleigh fading channels 瑞利衰落信道中具有天线分集的相干DS/CDMA系统性能分析
IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.956452
K. Hwang, K. Lee
{"title":"Performance analysis of coherent DS/CDMA systems with antenna diversity in Rayleigh fading channels","authors":"K. Hwang, K. Lee","doi":"10.1109/VTC.2001.956452","DOIUrl":"https://doi.org/10.1109/VTC.2001.956452","url":null,"abstract":"We investigate the performance of coherent direct-sequence code division multiple access (DS/CDMA) systems with antenna diversity in Rayleigh fading channels. For a DS/CDMA system operated in fading channels, the multiple access interference (MAI) is affected by fading. We determine the distribution of multiple access interference (MAI) in Rayleigh fading channels. Two simple approximation methods for MAI distribution are proposed, and compared with the exact MAI distribution. Using the exact and approximated MAI distributions, we evaluate the bit error probability (BEP) expression for coherent DS/CDMA systems with antenna diversity. Moreover, the BEP accuracy of the standard Gaussian approximation is investigated as the number of users, processing gain, and the number of antennas are varied.","PeriodicalId":129008,"journal":{"name":"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127088458","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
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