Transmitter precoding for space time CDMA system in multiuser communication

2004 International Conference on Signal Processing and Communications, 2004. SPCOM '04. Pub Date : 2004-12-11 DOI:10.1109/SPCOM.2004.1458382

P. Yadav, K. Vasudevan

{"title":"Transmitter precoding for space time CDMA system in multiuser communication","authors":"P. Yadav, K. Vasudevan","doi":"10.1109/SPCOM.2004.1458382","DOIUrl":null,"url":null,"abstract":"The desire to reduce complexity at mobile unit in cellular system has led to the investigation of signal processing techniques that move the complexity from the mobile unit to the base station. Transmitter precoding is one such technique and it represents a linear transformation of transmitted signals, such that mean squared error at all receivers is minimised. In this paper, we investigate the performance of transmitter precoding technique for the downlink of multiple input single output (MISO) DS CDMA system over fading channel. Our receivers are constrained to simple matched filters and complete channel information (CSI) at the transmitter is assumed. This is feasible under the time division duplex (TDD) mode of the 3G UMTS system where channel is assumed to be the same on uplink and downlink and can be estimated from the uplink at the base station. It is seen that transmitter precoding for MISO system offers reasonable advantage over single antenna system precoding along with transferring computational complexity to the base station from mobile station.","PeriodicalId":424981,"journal":{"name":"2004 International Conference on Signal Processing and Communications, 2004. SPCOM '04.","volume":"34 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2004-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2004 International Conference on Signal Processing and Communications, 2004. SPCOM '04.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SPCOM.2004.1458382","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

The desire to reduce complexity at mobile unit in cellular system has led to the investigation of signal processing techniques that move the complexity from the mobile unit to the base station. Transmitter precoding is one such technique and it represents a linear transformation of transmitted signals, such that mean squared error at all receivers is minimised. In this paper, we investigate the performance of transmitter precoding technique for the downlink of multiple input single output (MISO) DS CDMA system over fading channel. Our receivers are constrained to simple matched filters and complete channel information (CSI) at the transmitter is assumed. This is feasible under the time division duplex (TDD) mode of the 3G UMTS system where channel is assumed to be the same on uplink and downlink and can be estimated from the uplink at the base station. It is seen that transmitter precoding for MISO system offers reasonable advantage over single antenna system precoding along with transferring computational complexity to the base station from mobile station.

查看原文本刊更多论文

多用户通信中空时CDMA系统的发射机预编码

减少蜂窝系统中移动单元的复杂性的愿望导致了将复杂性从移动单元转移到基站的信号处理技术的研究。发射器预编码就是这样一种技术，它代表了发射信号的线性变换，使得所有接收器的均方误差最小。本文研究了衰落信道下多输入单输出(MISO) DS CDMA系统中发射机预编码技术的性能。我们的接收器被限制为简单匹配滤波器，并且假设发射机的信道信息(CSI)完整。这在3G UMTS系统的时分双工(TDD)模式下是可行的，该模式假定上行链路和下行链路信道相同，可以从基站上行链路估计信道。可以看出，MISO系统的发射机预编码相对于单天线系统预编码具有合理的优势，同时将计算复杂度从移动台转移到基站。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2004 International Conference on Signal Processing and Communications, 2004. SPCOM '04.

自引率

0.00%

发文量