Title :
D-MG Tradeoff and Optimal Codes for a Class of AF and DF Cooperative Communication Protocols
Author :
Elia, Petros E. ; Vinodh, K. ; Anand, M. ; Kumar, P. Vijay
Author_Institution :
Eurecom Inst., Sophia-Antipolis
fDate :
7/1/2009 12:00:00 AM
Abstract :
Cooperative relay communication in a fading channel environment under the orthogonal amplify-and-forward (OAF), nonorthogonal and orthogonal selection decode-and-forward (NSDF and OSDF) protocols is considered here. The diversity-multiplexing gain tradeoff (DMT) of the three protocols is determined and DMT-optimal distributed space-time (ST) code constructions are provided. The codes constructed are sphere decodable and in some instances incur minimum possible delay.
Keywords :
diversity reception; fading channels; multiplexing; protocols; space-time codes; AF cooperative communication protocols; D-MG tradeoff; DF cooperative communication protocols; DMT-optimal distributed space-time code; cooperative relay communication; diversity-multiplexing gain tradeoff; fading channel; nonorthogonal selection decode-and-forward protocols; optimal codes; orthogonal amplify-and-forward; orthogonal selection decode-and-forward protocols; Algebra; Broadcasting; Decoding; Delay; Digital relays; Fading; Information theory; OFDM modulation; Protocols; Rayleigh channels; Cooperative diversity; ST codes; cyclic division algebra codes; distributed space–time (ST) code; diversity–multiplexing gain tradeoff (DMT); nonorthogonal amplify-and-forward (NAF); orthogonal amplify-and-forward(OAF); selection decode-and-forward;
Journal_Title :
Information Theory, IEEE Transactions on
DOI :
10.1109/TIT.2009.2021314
