Title :
Comparing the Direct Transmission, two-hop relaying and cooperative relaying schemes
Author :
Li, Jialing ; Lu, Enoch ; Lu, I-Tai
Author_Institution :
ECE Dept., Polytech. Inst. of New York Univ., New York, NY, USA
Abstract :
A novel generalized iterative approach is proposed for designing the MMSE MIMO processors (precoders, relay processors and decoders) for two amplify-and-forward relaying schemes: two-hop (2Hop) and cooperative (Coop) relaying schemes. The MMSE design can be achieved for communication links with two end nodes and multiple relay nodes (all nodes with multiple antennas) subject to either the per-node power constraint or the per-antenna power constraint. Simulation results show that there exist circumstances where 2Hop performs as well as Coop. In addition, there exist scenarios that the conventional Direct Transmission (DT) scheme can actually outperform Coop if optimum modulation coding schemes and sophisticated cooperation protocols are not employed for Coop.
Keywords :
MIMO communication; amplify and forward communication; antenna arrays; cooperative communication; iterative methods; least mean squares methods; radio links; Coop relaying; MMSE MIMO processors; amplify-and-forward relaying scheme; communication links; cooperation protocols; cooperative relaying; direct transmission; generalized iterative approach; multiple antenna; multiple relay nodes; optimum modulation coding scheme; per-antenna power constraint; per-node power constraint; two-hop relaying; Antennas; Covariance matrix; Decoding; MIMO; Noise; Program processors; Relays;
Conference_Titel :
Wireless Communications and Networking Conference (WCNC), 2011 IEEE
Conference_Location :
Cancun, Quintana Roo
Print_ISBN :
978-1-61284-255-4
DOI :
10.1109/WCNC.2011.5779402
