Title :
On the achievable rates of the diamond relay channel with conferencing links
Author :
Huang, Chuan ; Jiang, Jinhua ; Cui, Shuguang
Author_Institution :
Dept. of ECE, Texas A&M Univ., College Station, TX, USA
fDate :
Sept. 29 2010-Oct. 1 2010
Abstract :
We consider a half-duplex diamond relay channel, which consists of one source-destination pair and two relay nodes connected with two-way rate-limited out-of-band conferencing links. Three basic schemes and their achievable rates are studied: For the decode-and-forward (DF) scheme, we obtain the achievable rate by letting the source send a common message and two private messages; for the compress-and-forward (CF) scheme, we exploit the conferencing links to help with the compression of the received signals; for the amplify-and-forward (AF) scheme, we study the optimal combining strategy between the received signals from the source and the conferencing link. Moreover, we show that these schemes asymptotically achieve the capacity upper bound under certain conditions. Finally, we evaluate the various rates for the Gaussian case with simulations and numerical results.
Keywords :
amplify and forward communication; channel coding; decode and forward communication; radio links; signal processing; CF scheme; DF scheme; amplify-and-forward scheme; capacity upper bound; compress-and-forward scheme; decode-and-forward scheme; half-duplex diamond relay channel; optimal combining strategy; source-destination pair; two-way rate-limited out-of-band conferencing links; Delay; Diamond-like carbon; Encoding; Noise; Relays; USA Councils; Upper bound;
Conference_Titel :
Communication, Control, and Computing (Allerton), 2010 48th Annual Allerton Conference on
Conference_Location :
Allerton, IL
Print_ISBN :
978-1-4244-8215-3
DOI :
10.1109/ALLERTON.2010.5707002