Title :
Approximate capacity of the MIMO relay channel
Author :
Xianglan Jin ; Young-Han Kim
Author_Institution :
Dept. of Electr. & Comput. Eng., Pusan Nat. Univ., Busan, South Korea
fDate :
June 29 2014-July 4 2014
Abstract :
The capacity bounds are studied for the multiple-antenna real full-duplex Gaussian relay channel with t1 transmitting antennas at the sender, r2 receiving and t2 transmitting antennas at the relay, and r3 receiving antennas at the receiver. It is shown that compress-forward and partial decode-forward achieve within (1/2)(min(t1 + t2, r3) + r2) bits and (1/2) min(t1, r2) bits, respectively, from the cutset bound. Unlike the single-antenna case, partial decode-forward can be arbitrarily better than optimal selection between decode-forward and direct transmission. Similar gap results for half-duplex models are briefly discussed.
Keywords :
Gaussian channels; MIMO communication; decode and forward communication; receiving antennas; relay networks (telecommunication); transmitting antennas; MIMO relay channel; compress-forward; cutset bound; full-duplex Gaussian relay channel; half-duplex model; partial decode-forward; receiving antennas; transmitting antennas; Information theory; MIMO; Receiving antennas; Relays; Transmitting antennas; Vectors;
Conference_Titel :
Information Theory (ISIT), 2014 IEEE International Symposium on
Conference_Location :
Honolulu, HI
DOI :
10.1109/ISIT.2014.6875204