Title :
Novel Layered Space-Frequency Architecture for Uplink Multi-User MIMO-CDMA Systems
Author :
Liang, Sun ; Yafeng, Wang ; Junfeng, Zhang ; Yang Dacheng
Author_Institution :
Wireless Theories & Technol., Beijing Univ. of Posts & Telecommun.
Abstract :
In this paper, single-carrier asynchronous uplink multi-user MIMO-CDMA system with an unconventional spreading approach is proposed. With the spreading and despreading approach the multi-user interferences (MUI) caused by the asynchronous signals in the uplink can be completely eliminated. The interferences between different antennas can be further suppressed by a layered space-frequency equalization (LSFE) algorithm. In order to reduce the influence of error propagation brought by the SIC in the procedure of detection, we proposed an improved iterative LSFE.
Keywords :
MIMO communication; code division multiple access; equalisers; iterative methods; multiuser channels; radio links; radiofrequency interference; asynchronous signals; despreading approach; iterative LSFE; layered space-frequency architecture; layered space-frequency equalization; multi-user interferences; uplink multi-user MIMO-CDMA systems; Base stations; Degradation; Downlink; Equalizers; Fading; Frequency; Interference elimination; Iterative algorithms; MIMO; Multiaccess communication;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th
Conference_Location :
Dublin
Print_ISBN :
1-4244-0266-2
DOI :
10.1109/VETECS.2007.500
