Iterative Channel Estimation and Equalization for STBC MC-CDMA System over Time- and Frequency-Selective Fading Channels

Author

Hassan, Mohamed A S ; Sharif, Bayan S. ; Woo, Wai Lok ; Hmidat, Adel M.

Author_Institution

Sch. of Electr., Electron. & Comput. Eng., Newcastle Univ., Newcastle upon Tyne

Volume

2

fYear

0

fDate

0-0 0

Firstpage

2549

Lastpage

2553

Abstract

This paper investigates the performance of a downlink space-time block code (STBC) multi-carrier code division multiple access (MC-CDMA) system employing a receiver with iterative channel estimation (ICE) and iterative equalization (IE). ICE based on the Kalman filter whereas IE based on the minimum mean square error (MMSE) equalizer. The performance of this system is investigated under time-varying multipath fading channels with different fading rates. Simulation results demonstrate that a signal-to-noise ratio (SNR) gain of2-2.5 dB can be added when employing ICE and IE for 4 iterations with only few training symbols (less than 10% of bandwidth efficiency loss) even when channels have high fading rate

Keywords

Kalman filters; block codes; channel estimation; code division multiple access; fading channels; multipath channels; receivers; time-varying channels; Kalman filter; STBC MC-CDMA system; downlink space-time block code; frequency-selective fading channels; iterative channel equalization; iterative channel estimation; minimum mean square error equalizer; multicarrier code division multiple access; receiver; time-selective fading channels; time-varying multipath fading channels; Block codes; Channel estimation; Downlink; Equalizers; Frequency-selective fading channels; Ice; Mean square error methods; Multicarrier code division multiple access; Signal to noise ratio; Time varying systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Information and Communication Technologies, 2006. ICTTA '06. 2nd

Conference_Location

Damascus

Print_ISBN

0-7803-9521-2

Type

conf

DOI

10.1109/ICTTA.2006.1684809

Filename

1684809