Iterative PIC detection and channel estimation for DS-CDMA 3G communications

被引：0
|
作者：
Morosi, S [1 ]
Rufolo, P [1 ]
Fantacci, R [1 ]
机构：
[1] Univ Florence, Elect & Telecommun Dept, I-50139 Florence, Italy
来源：
2004 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE, VOLS 1-4: BROADBAND WIRELESS - THE TIME IS NOW | 2004年
关键词：
D O I：
10.1109/WCNC.2004.1311514
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This paper presents it Turbo Multiuser Detector for Turbo-Coded DS-CDMA systems, based on the utilization of a PIC and a bank of turbo decoders, in which the PIC performs interference cancellation after each constituent decoder of the turbo decoding scheme. Moreover, the soft output of turbo decoders are used iteratively to improve the updating step of the channel parameter estimation which is formally equivalent to one step of the expectation-maximization algorithm. By means of computer simulations, we will show that the proposed receiver achieves performance comparable with systems which suppose perfect channel parameters knowledge for medium to high system loads. in AWGN channel. The proposed receiver is also tested in a satellite channel.
引用
收藏
页码：36 / 41
页数：6
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