Title :
Joint Source-Relay Optimization for Two-Path MIMO AF Relay System
Author :
Wei Chen ; Zhi Chen ; Chao Zhou
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
In this paper, we consider the inter-relay interference (IRI) problem in a two-path successive amplify-and-forward (AF) multi-input multi-output (MIMO) relay system. First, a new interference cancellation algorithm employed at the relays is proposed to fully remove the IRI with an arbitrary number of antennas. Second, the transmit beamforming matrix at the source, relays and destination are jointly designed to maximize the capacity under the power constraint. Third, we analyze the relation among duplex-gain, diversity-gain, and the multiplex-gain in the different antennas number and SNR, respectively. Finally, Monte Carlo simulations are also given to verify the good performance of the proposed algorithm.
Keywords :
MIMO communication; Monte Carlo methods; amplify and forward communication; array signal processing; interference suppression; matrix algebra; relay networks (telecommunication); IRI problem; Monte Carlo simulations; SNR; diversity-gain; duplex-gain; interference cancellation algorithm; interrelay interference problem; joint source-relay optimization; multiplex-gain; power constraint; transmit beamforming matrix; two-path MIMO AF relay system; two-path successive amplify-and-forward multiinput multioutput relay system; Antennas; Array signal processing; High definition video; MIMO; Relays; Signal to noise ratio; Silicon;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing (WiCOM), 2012 8th International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-61284-684-2
DOI :
10.1109/WiCOM.2012.6478558
