Iterative turbo MKL multiuser detection and channel estimation for DS-CDMA signals

Author

Ploysuwan, Tuchsanai ; Tantiphanwadi, Sawat ; Teekaput, Prasit

Author_Institution

Chulalongkorn Univ., Bangkok

fYear

2007

fDate

10-13 Dec. 2007

Firstpage

1

Lastpage

5

Abstract

This paper derives a new computational efficiency minimum Kullback-Leibler (MKL) iterative multiuser detector algorithm and channel estimation for DS-CDMA system. The main ideas are to design virtual trellis corresponding to each user´s symbols channel delay for generating extrinsic probability in term of BCJR algorithm and channel estimator that is compatible with very short training sequence operates in an iterative fashion according to minimum Kullback-Leibler algorithm. In comparison with other similar receiver, simulation results demonstrate superior performance.

Keywords

channel estimation; code division multiple access; iterative methods; multiuser detection; spread spectrum communication; DS-CDMA signals; Kullback-Leibler iterative multiuser detector algorithm; channel estimation; iterative turbo MKL multiuser detection; virtual trellis; AWGN; Channel estimation; Delay estimation; Detectors; Intersymbol interference; Iterative algorithms; Iterative decoding; Maximum likelihood decoding; Multiaccess communication; Multiuser detection;

fLanguage

English

Publisher

ieee

Conference_Titel

Information, Communications & Signal Processing, 2007 6th International Conference on

Conference_Location

Singapore

Print_ISBN

978-1-4244-0982-2

Electronic_ISBN

978-1-4244-0983-9

Type

conf

DOI

10.1109/ICICS.2007.4449757

Filename

4449757