Performance improvement of STBC CDMA system in correlated MIMO channels

Author

Rahmati, Mehdi ; Vakili, Vahid Tabataba

Author_Institution

Electr. Eng. Dept., Iran Univ. of Sci. & Technol., Tehran, Iran

fYear

2009

fDate

12-14 Oct. 2009

Firstpage

113

Lastpage

116

Abstract

In this paper the effect of spatial correlation in code division multiple access (CDMA) space-time block coding (STBC) system is investigated. Having some information about the channel of each active user in the transmitter, a linear precoder can be exploited in downlink situation to mitigate the effect of correlation in multiuser system environment which has not been addressed before. Simulation results illustrate that despite the number of interfering users, the anti-correlation precoder could mitigate the performance degradation caused by correlation.

Keywords

MIMO communication; block codes; code division multiple access; precoding; space-time codes; STBC CDMA system; anticorrelation precoder; code division multiple access space-time block coding system; correlated MIMO channels; linear precoder; multiple-input multiple-output system; multiuser system environment; spatial correlation; AWGN; Bit error rate; Block codes; Degradation; MIMO; Multiaccess communication; Receiving antennas; Space technology; Transmitters; Transmitting antennas; CDMA; Correlated channel; Precoding; STBC; multiuser;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Technologies for Communications, 2009. ATC '09. International Conference on

Conference_Location

Hai Phong

Print_ISBN

978-1-4244-5139-5

Type

conf

DOI

10.1109/ATC.2009.5349315

Filename

5349315