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.

fYear

2007

fDate

22-25 April 2007

Firstpage

2425

Lastpage

2429

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th

Conference_Location

Dublin

ISSN

1550-2252

Print_ISBN

1-4244-0266-2

Type

conf

DOI

10.1109/VETECS.2007.500

Filename

4212928