Title :
Iterative turbo MKL multiuser detection and channel estimation for DS-CDMA signals
Author :
Ploysuwan, Tuchsanai ; Tantiphanwadi, Sawat ; Teekaput, Prasit
Author_Institution :
Chulalongkorn Univ., Bangkok
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;
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
DOI :
10.1109/ICICS.2007.4449757
