{"title":"Full-diversity group space-time-frequency (GSTF) codes from cyclic codes","authors":"U. Sripati, B. Rajan, V. Shashidhar","doi":"10.1109/ISIT.2005.1523712","DOIUrl":null,"url":null,"abstract":"It is known that multi-antenna transmissions over frequency-selective channels can provide a diversity gain that is product of the number of transmit antennas, the receive antennas and the length of the channel impulse response. Liu, Xin and Giannakis have studied multi-antenna orthogonal frequency division multiplexing (OFDM) through frequency-selective Rayleigh-fading channels and have introduced the concept of space-time frequency (STF) coding to enable maximum diversity and high coding gains. It is known that under some conditions, an n-length cyclic code C over Fqm (n|qm - 1, and m les n) can have fullrank i.e Rankq(C) = m. Designs for space-time codes suitable for both quasi-static fading channels and block-fading channels have been derived from n length cyclic codes over Fqm. In this paper, we present a simplified design of STF codes using designs derived from cyclic codes to obtain group space-time-frequency (GSTF) codes for frequency selective Rayleigh fading channels. These codes achieve maximum diversity gain","PeriodicalId":166130,"journal":{"name":"Proceedings. International Symposium on Information Theory, 2005. ISIT 2005.","volume":"39 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2005-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings. International Symposium on Information Theory, 2005. ISIT 2005.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISIT.2005.1523712","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 8
Abstract
It is known that multi-antenna transmissions over frequency-selective channels can provide a diversity gain that is product of the number of transmit antennas, the receive antennas and the length of the channel impulse response. Liu, Xin and Giannakis have studied multi-antenna orthogonal frequency division multiplexing (OFDM) through frequency-selective Rayleigh-fading channels and have introduced the concept of space-time frequency (STF) coding to enable maximum diversity and high coding gains. It is known that under some conditions, an n-length cyclic code C over Fqm (n|qm - 1, and m les n) can have fullrank i.e Rankq(C) = m. Designs for space-time codes suitable for both quasi-static fading channels and block-fading channels have been derived from n length cyclic codes over Fqm. In this paper, we present a simplified design of STF codes using designs derived from cyclic codes to obtain group space-time-frequency (GSTF) codes for frequency selective Rayleigh fading channels. These codes achieve maximum diversity gain
众所周知，在频率选择信道上的多天线传输可以提供分集增益，该分集增益是发射天线数量、接收天线数量和信道脉冲响应长度的乘积。Liu, Xin和Giannakis通过频率选择瑞利衰落信道研究了多天线正交频分复用(OFDM)，并引入了时空频率(STF)编码的概念，以实现最大的分集和高编码增益。已知在某些条件下，Fqm上的n长循环码C (n|qm - 1, m les n)可以具有全秩，即Rankq(C) = m。基于Fqm上的n长循环码，已经设计出适合准静态衰落信道和块衰落信道的空时码。在本文中，我们提出了一种简化的STF码设计，使用循环码的设计来获得频率选择性瑞利衰落信道的群空时频(GSTF)码。这些码实现了最大的分集增益
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