An Advanced Cooperative Scheme in the Broadcasting and Cellular System

Hyun-Jun SHIN  Hyun-Woo JANG  Hyoung-Kyu SONG  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E97-D   No.6   pp.1634-1638
Publication Date: 2014/06/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E97.D.1634
Type of Manuscript: LETTER
Category: Fundamentals of Information Systems
Keyword: 
cooperative communication,  OFDM,  STBC,  V-BLAST,  diversity,  multiplexing,  CDD,  

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Summary: 
In this letter, a cooperative scheme is proposed for the broadcasting and cellular communication system. The proposed scheme improves bit error rate (BER) performance and throughput on the edge of a cellular base station (CBS) cooperating with another CBS in the same broadcasting coverage. The proposed scheme for the enhancement of BER performance employs two schemes by a channel quality information (CQI) between a broadcasting base station (BBS) and users. In a physical area, the edge of a CBS is concatenated with the edge of another CBS. When users are on the edge of a CBS, they transmit simultaneously the CQI to CBSs, and then a BBS and CBSs transmit signals by the proposed algorithm. The two schemes apply space-time cyclic delay diversity (CDD) and a combination of space-time block code (STBC) with vertical Bell Laboratories Layered Space-Time (V-BLAST) to a signal from a BBS and CBSs. The resulting performance indicates that the proposed scheme is effective for users on the edges of CBSs.