An Improved Transmission Rate in Cooperative Communication Based on OFDMA System

Eui-Hak LEE  Hyoung-Kyu SONG  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E96-A   No.7   pp.1667-1670
Publication Date: 2013/07/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E96.A.1667
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Communication Theory and Signals
Keyword: 
cooperative communication,  OFDMA,  STBC,  improved transmission rate,  

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Summary: 
The sub-channel is empty except each user's allocated sub-channel in an orthogonal frequency division multiple access (OFDMA) system. The scheme of cooperative communication using this empty sub-channel has been studied. But, because each user wastes the time slots in the cooperation phase, it is difficult to achieve the full rate. In this letter, a new cooperative communication scheme based on OFDMA is proposed to improve transmission rate in Rayleigh fading channel.