Title :
Orthogonal decode and forward relaying with improved spectral efficiency
Author :
Srinivas, K.V. ; Giridhar, K. ; Koilpillai, R.D.
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol. Madras, Chennai
fDate :
2/1/2009 12:00:00 AM
Abstract :
Cooperative relay communications can significantly improve the reliability of data transmission over wireless fading channels by implementing spatial diversity in a distributed fashion. Orthogonal decode and forward (ODF) relaying achieves maximum diversity provided by the source-destination and relay destination channels, but suffers from low spectral efficiency. We propose a novel ODF protocol having higher spectral efficiency without sacrificing the diversity gain. We analyze the symbol error probability of the proposed protocol and also present simulation results.
Keywords :
data communication; decoding; error statistics; fading channels; orthogonal codes; protocols; radio networks; cooperative relay communications; data transmission; diversity gain; orthogonal decode and forward relaying; protocol; relay destination channel; source-destination channel; spectral efficiency; symbol error probability; wireless fading channels; Data communication; Decoding; Digital relays; Diversity methods; Error analysis; Error probability; Fading; Forward contracts; Interchannel interference; Protocols; Cooperative relaying, diversity, rotated constellations;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2009.081511
