Single-symbol ML decodable distributed STBCs for partially-coherent cooperative networks

被引：1

作者：

Sreedhar, D. ^{[1
]}

Chockalingam, A. ^{[1
]}

Rajan, B. Sundar ^{[1
]}

机构：

[1] Indian Inst Sci, Dept ECE, Bangalore 560012, Karnataka, India

来源：

2008 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, PROCEEDINGS, VOLS 1-13 | 2008年

关键词：

cooperative communications; amplify-and-forward protocol; distributed STBC; single-symbol decoding;

D O I：

10.1109/ICC.2008.201

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Space-time block codes (STBCs) that are single-symbol decodable (SSD) in a co-located multiple antenna setting need not be SSD in a distributed cooperative communication setting. A relay network with N relays and a single source-destination pair is called a partially-coherent relay channel (PCRC) if the destination has perfect channel state information (CSI) of all the channels and the relays have only the phase information of the source-to-relay channels. In this paper, first, a new set of necessary and sufficient conditions for a STBC to be SSD for co-located multiple antenna communication is obtained. Then, this is extended to a set of necessary and sufficient conditions for a distributed STBC (DSTBC) to be SSD for a PCRC, by identifying the additional conditions. Using this, several SSD DSTBCs for PCRC are identified among the known classes or STBCs. It is proved that even if a SSD STBC for a co-located MIMO channel does not satisfy the additional conditions for the code to be SSD for a PCRC, single-symbol decoding of it in a PCRC gives full-diversity and only coding gain is lost.

引用

页码：1029 / 1033

页数：5

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