Title :
Cooperative AF MIMO wireless relay networks under relay power constraint
Author :
Kanghee Lee ; Kwon, Hyuck M. ; Hyunggi Kim ; Hyuncheol Park ; Lee, Y.H.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Wichita State Univ., Wichita, KS, USA
Abstract :
This paper presents an amplify-and-forward (AF) relay scheme for M-source-M-destination pairs and N relay nodes. Cooperative minimum mean square error (MMSE) and zero-forcing (ZF) strategies for wireless relay networks under the relay power constraint are investigated. The main contribution of this paper is the derivation of both the MMSE-based and the ZF-based amplifying relay matrices (ARMs) under the relay power constraint. By adopting the ARMs derived, the cost function and the total signal component power (SCP) of the received signals at the destination nodes are investigated. Finally, the system bit error rate (BER) performance is evaluated theoretically by using the cost function and total SCP behaviors, and numerically by using Monte-Carlo simulations.
Keywords :
MIMO communication; Monte Carlo methods; amplify and forward communication; cooperative communication; error statistics; least mean squares methods; relay networks (telecommunication); ARM; BER performance; M-source-M-destination pairs; MMSE-based amplifying relay matrices; Monte-Carlo simulation; SCP behavior; ZF strategy; ZF-based amplifying relay matrices; amplify-and-forward relay scheme; cooperative AF MIMO wireless relay network; cooperative minimum mean square error; cost function; destination node; received signal; relay node; relay power constraint; signal component power; system bit error rate performance; zero-forcing; Amplify-and-forward; MMSE; ZF; amplifying relay matrix; relay power constraint;
Conference_Titel :
Signals, Systems and Computers (ASILOMAR), 2012 Conference Record of the Forty Sixth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4673-5050-1
DOI :
10.1109/ACSSC.2012.6489242
