The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring.最新文献_第10页

Saving memory in turbo trellis coded modulation using the sliding window 在使用滑动窗口的turbo栅格编码调制中节省内存

The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring. Pub Date : 2003-04-22 DOI: 10.1109/VETECS.2003.1208807

N. Kim, Myong Seop Yang, Soon-Young Kim, M. Lee

引用次数: 0

Optimal power allocation for relayed transmissions over Rayleigh fading channels 瑞利衰落信道中继传输的最佳功率分配

The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring. Pub Date : 2003-04-22 DOI: 10.1109/VETECS.2003.1208833

M. Hasna, Mohamed-Slim Alouini

引用次数: 9

Collaborative QoS architecture between DiffServ and 802.11e wireless LAN DiffServ与802.11e无线局域网之间的协同QoS架构

The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring. Pub Date : 2003-04-22 DOI: 10.1109/VETECS.2003.1207765

Seyong Park, Kyungtae Kim, Dong-Yup Kim, Sunghyun Choi, Sangjin Hong

引用次数: 82

Improved transmit diversity block coded OFDM systems for highly dispersive channels 高色散信道下改进的发射分集块编码OFDM系统

The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring. Pub Date : 2003-04-22 DOI: 10.1109/VETECS.2003.1207812

Bing-Hung Chiang, D. Lin, Hsueh-Jyh Li, Jia-li Wang

引用次数: 3

Comparison of suboptimal iterative space-time receivers 次优迭代时空接收机的比较

The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring. Pub Date : 2003-04-22 DOI: 10.1109/VETECS.2003.1207744

Arnaud Guéguen

{"title":"Comparison of suboptimal iterative space-time receivers","authors":"Arnaud Guéguen","doi":"10.1109/VETECS.2003.1207744","DOIUrl":"https://doi.org/10.1109/VETECS.2003.1207744","url":null,"abstract":"At high spectral efficiencies, optimal decoding of space time block coded (STBC) multiple input multiple output (MIMO) systems has a critical complexity unless the space-time code structure offers simple optimal decoding, as is the case for space time orthogonal block codes (STOBC). Indeed, the complexity of true maximum likelihood (ML) decoding or a posteriori probability (APP) decoding of STBC increase exponentially with the spectral efficiency. As a soft input soft output (SISO) decoding scheme, APP space-time decoding is of special interest since it allows the space-time receiver to efficiently work with a channel decoder. Besides, it can advantageously be used in an iterative manner with a SISO channel decoder to approach the optimal joint receiver performance. List sphere decoding (LSD) provides a good approximation of APP decoding with reduced complexity and can therefore be considered as a performance reference. This paper presents a new suboptimal SISO space-time receiver based on MMSE using priors, which has significantly lower complexity than LSD but turns out to perform similarly when used in an iterative receiver. The system under consideration is first presented, followed by a detailed description of the new proposed MMSE based receiver and a brief description of the reference LSD receiver. These two schemes are then evaluated in iterative receivers in terms of performance and complexity.","PeriodicalId":272763,"journal":{"name":"The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring.","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124990117","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

Joint downlink beamforming and power control for 3G WCDMA 3G WCDMA联合下行波束形成与功率控制

The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring. Pub Date : 2003-04-22 DOI: 10.1109/VETECS.2003.1207557

M. Schubert, D. Karadoulamas, H. Boche, G. Lehmann

引用次数: 9

Multirate SIC receiver with several amplitude estimation methods for UMTS FDD uplink 多速率SIC接收机与几种幅度估计方法用于UMTS FDD上行

The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring. Pub Date : 2003-04-22 DOI: 10.1109/VETECS.2003.1207156

I. Barbancho, A. M. Barbancho, L. Tardón, J.T. Emtrambasaguas

引用次数: 1

A novel channel estimation method for OFDM transmission technique under fast time-variant fading channel 一种新的OFDM传输技术快速时变衰落信道估计方法

The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring. Pub Date : 2003-04-22 DOI: 10.1109/VETECS.2003.1208808

T. Fukuhara, H. Yuan, Y. Takeuchi, Hideo Kobayashi

引用次数: 47

Load threshold for connection state scheme supporting packet data service in wireless networks 无线网络中支持分组数据业务的连接状态方案的负载阈值

The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring. Pub Date : 2003-04-22 DOI: 10.1109/VETECS.2003.1207086

C. Choi, W. C. Shin, J. Park, Dong Joon Kim, Jea Hwan Ju

{"title":"Load threshold for connection state scheme supporting packet data service in wireless networks","authors":"C. Choi, W. C. Shin, J. Park, Dong Joon Kim, Jea Hwan Ju","doi":"10.1109/VETECS.2003.1207086","DOIUrl":"https://doi.org/10.1109/VETECS.2003.1207086","url":null,"abstract":"In provisioning packet data service on wireless cellular networks, a scheme of altering connection status between mobile and base stations appeared intending to efficiently utilize resource during idle periods. In such a scheme, connection components are sequentially released as an idle period persists, while a transmission activity is resumed as a prescribed amount of traffic load is accumulated at the transmitting station. Before a transmission resume, however, latency depending on previous idle period is unavoidable to retrieve the lost connection components, which also produces a chain reaction in forthcoming idle period and connection retrieval time. An issue arising in design of the scheme is to determine a threshold value for load accumulation in conjunction with packet delay properties. A high threshold apparently incurs along stand-by to gather the prescribed traffic load before resuming transmission. On the other hand, such high threshold may shorten the length of upcoming idle period and reduce the consequent connection retrieval time by suppressing the release of connection components. In this paper, we thus investigate the antithetical effects of load threshold on packet delay performance. First, we generalize the connection retrieval time in consideration of the number of states and maximum sojourn times. Secondly, for general packet arrivals, we estimate average length of idle period and mean packet delay. In addition, we present an approximation method to calculate the moments of packet delay time for Poisson arrivals. Finally, we construct and solve a problem to find an optimal value for load threshold minimizing mean packet delay. From numerical examples, we find non-trivial optimal thresholds in the environments characterized by relatively long connection retrieval time and heavy traffic load.","PeriodicalId":272763,"journal":{"name":"The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring.","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133572284","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

A robust non-orthogonal space-time block code for four transmit antennas 一个鲁棒的非正交空时分组码的四个发射天线

The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring. Pub Date : 2003-04-22 DOI: 10.1109/VETECS.2003.1207551

F. Zheng, A. Burr

引用次数: 5