DocumentCode :
2420216
Title :
Throughput-Optimal Half-Duplex Cooperative Scheme with Partial Decode-Forward Relaying
Author :
Abu Al Haija, Ahmad ; Vu, Mai
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada
fYear :
2011
fDate :
5-9 June 2011
Firstpage :
1
Lastpage :
6
Abstract :
We study a cooperative communication system consisting of two users in half duplex mode communicating with one destination over additive white Gaussian noise (AWGN). Cooperation is performed between the two users by partial decode-forward relaying over 3 time slots with variable duration. During the first two slots, each user alternatively transmits and partially decodes while during the last time slot, both users cooperate to forward information to the destination. We establish the achievable rate region of this scheme. Then using the Lagrangian method, we analyze the optimal power allocations and the optimal time duration that maximize its individual and sum rates for the symmetric channel. Results show a significant improvement of the rates compared to the classical multiple access channel (MAC) when the inter-user channel quality is better than that between each user and the destination.
Keywords :
AWGN; cooperative communication; decode and forward communication; multi-access systems; AWGN; Lagrangian method; additive white Gaussian noise; cooperative communication system; interuser channel quality; multiple access channel; optimal power allocations; partial decode-forward relaying; sum rates; symmetric channel; throughput-optimal half-duplex cooperative scheme; Channel models; Encoding; Fading; IEEE Communications Society; Optimization; Resource management; Throughput;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications (ICC), 2011 IEEE International Conference on
Conference_Location :
Kyoto
ISSN :
1550-3607
Print_ISBN :
978-1-61284-232-5
Electronic_ISBN :
1550-3607
Type :
conf
DOI :
10.1109/icc.2011.5963212
Filename :
5963212
Link To Document :
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