Title :
Space-time spreading codes for a multiuser MIMO system
Author :
Doostnejad, Roya ; Lim, Teng Joon ; Sousa, Elvino S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada
Abstract :
We study the use of the spatial dimension in enabling multiple access for the down-link of a cellular communication system and propose a two dimensional spreading code. By using a minimum number of transmit and receive antennas, the bandwidth efficiency is increased over a single antenna system, while diversity is provided at the receiver. A key feature of the proposed technique is that it simplifies the implementation of joint space-time decoding and multiuser detection in each user station. It is supposed that the channel is known only at the receiver.
Keywords :
MIMO systems; cellular radio; decoding; diversity reception; matrix algebra; multi-access systems; multiuser detection; space-time codes; 2D spreading code; bandwidth efficiency; cellular communication system; diversity reception; multiple access; multiuser MIMO system; multiuser detection; receive antennas; space-time codes; space-time decoding; space-time spreading codes; space-time spreading matrix; transmit antennas; two dimensional spreading code; Channel coding; Decoding; Diversity methods; Educational institutions; MIMO; Multiaccess communication; Multiuser detection; Receiving antennas; Speech; Transmitting antennas;
Conference_Titel :
Signals, Systems and Computers, 2002. Conference Record of the Thirty-Sixth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-7576-9
DOI :
10.1109/ACSSC.2002.1197004
