Title :
Design and analysis of MIMO multiuser system under coexistence of direct and relay-aided links
Author :
Taniguchi, T. ; Karasawa, Y. ; Nakajima, N.
Author_Institution :
Dept. of Commun. Eng. & Inf., Univ. of Electro-Commun. (UEC), Tokyo, Japan
Abstract :
This paper studies multiuser MIMO (multiple input multiple output) system with a mixed structure of two transmission schemes in which each user chooses direct or AF (amplify and forward) relay-aided link depending on the channel condition. First, an equivalent two stage MTMR (multiple transmitter multiple receiver) model is introduced to simplify the problem, then SINR (signal to interference plus noise ratio) performance analysis is given. Next, two kinds of design methods utilizing ZF (zero forcing) are described based on the two stage model. Through computer simulations assuming fading channels, the effectiveness and features of the proposed design methods are investigated.
Keywords :
MIMO communication; fading channels; multi-access systems; radio receivers; radio transmitters; MIMO multiuser system; direct link; fading channel; mixed structure; multiple transmitter multiple receiver; multiuser multiple input multiple output system; relay aided link; Antennas; Design methodology; Interference; MIMO; Relays; Signal to noise ratio; Transmitters;
Conference_Titel :
Wireless Technology Conference (EuWIT), 2010 European
Conference_Location :
Paris
Print_ISBN :
978-1-4244-7233-8
