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An Improved Cooperative Technique Sharing the Channel in OFDMA-Based System

Junpyo JEON, Hyoung-Muk LIM, Hyuncheol PARK, Hyoung-Kyu SONG

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Summary :

Cooperative communication has been proposed to improve the disadvantages of the multiple-input multiple-output (MIMO) technique without using extra multiple antennas. In an orthogonal frequency division multiple access (OFDMA) system, a cooperative communication that each user shares their allocated sub-channels instead of the MIMO system has been proposed to improve the throughput. But the cooperative communication has a problem as the decreased throughput because it is necessary that users send and receive the information to each other to improve reliability. In this letter, the modified cooperative transmission scheme is proposed to improve reliability in the fading channel, and it can solve the problem for BER performance that is dependent on the errors in the first phase that exchanges the information between both users during the first time.

Publication
IEICE TRANSACTIONS on Information Vol.E97-D No.12 pp.3222-3225
Publication Date
2014/12/01
Publicized
Online ISSN
1745-1361
DOI
10.1587/transinf.2014EDL8024
Type of Manuscript
LETTER
Category
Fundamentals of Information Systems

Authors

Junpyo JEON
  Dept. of Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST)
Hyoung-Muk LIM
  Sejong University
Hyuncheol PARK
  Dept. of Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST)
Hyoung-Kyu SONG
  Sejong University

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