TY - GEN
T1 - On the achievable degrees of freedom of alternate MIMO relaying with multiple AF relays
AU - Park, Ki Hong
AU - Alouini, Mohamed Slim
AU - Park, Seong Ho
AU - Ko, Young Chai
PY - 2012
Y1 - 2012
N2 - In this paper, we consider a two-hop relaying network where one source, one destination, and multiple amplify-and-forward (AF) relays equipped with M antennas operate in a half-duplex mode. In order to compensate for the inherent loss of capacity pre-log factor of 1/2 due to half-duplex relaying, we propose a new transmission protocol which combines alternate relaying and inter-relay interference alignment. We prove that the proposed scheme can (i) exploits M degrees of freedom (DOFs) and (ii) perfectly recover the pre-log factor loss if the number of relays is at least six. From our selected numerical results, we show that our proposed scheme gives significant improvement over conventional AF relaying which offers only M/2 DOFs.
AB - In this paper, we consider a two-hop relaying network where one source, one destination, and multiple amplify-and-forward (AF) relays equipped with M antennas operate in a half-duplex mode. In order to compensate for the inherent loss of capacity pre-log factor of 1/2 due to half-duplex relaying, we propose a new transmission protocol which combines alternate relaying and inter-relay interference alignment. We prove that the proposed scheme can (i) exploits M degrees of freedom (DOFs) and (ii) perfectly recover the pre-log factor loss if the number of relays is at least six. From our selected numerical results, we show that our proposed scheme gives significant improvement over conventional AF relaying which offers only M/2 DOFs.
UR - http://www.scopus.com/inward/record.url?scp=84863682078&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84863682078&partnerID=8YFLogxK
U2 - 10.1109/ComNet.2012.6217739
DO - 10.1109/ComNet.2012.6217739
M3 - Conference contribution
AN - SCOPUS:84863682078
SN - 9781467310079
T3 - 3rd International Conference on Communications and Networking, ComNet 2012
BT - 3rd International Conference on Communications and Networking, ComNet 2012
T2 - 2012 3rd International Conference on Communications and Networking, ComNet 2012
Y2 - 29 March 2012 through 1 April 2012
ER -