CDMA Downlink Receiver Based on PIC Structure

doi:10.13190/jbupt.200804.82.026

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (4): 82-85.doi: 10.13190/jbupt.200804.82.026

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CDMA Downlink Receiver Based on PIC Structure

XU Guo-ping1，HE Wei2，ZHANG Xin3，YANG Da-cheng3

1. Research & Design Institute，China Unicom，Zhengzhou 450007，China；2. School of Telecommunication Engineering，Beijing University of Posts and Telecommunications，Beijing 100876，China ；3. School of Communication and Information Engineering，Chongqing University of Posts and Telecommunications，Chongqing 400065，China

Received:2007-07-08 Revised:1900-01-01 Online:2008-08-30 Published:2008-08-30
Contact: XU Guo-ping

Abstract

Abstract:

Firstly, after analyzing the generation and the distribution of the inherent error of overlap-cut (OC) method frequency domain equalization (FDE), the improved version of OC method called adaptive OC (AOC) method was proposed. Secondly, one parallel interference cancellation (PIC) structure based on non-linear feedback was designed. After nonlinear processing, the users’ feedback information during the PIC iteration was adjusted according to confidence. As a result of both analysis and simulation, AOC Method FDE outperforms the original OC Method with lower complexity. The non-linear feedback PIC further improves the performance of the receiver.

Key words: code division multiple access, frequency domain equalization, overlap-cut method, parallel interference cancellation

CLC Number:

TN911.5

XU Guo-ping1，HE Wei2，ZHANG Xin3，YANG Da-cheng3
. CDMA Downlink Receiver Based on PIC Structure[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2008, 31(4): 82-85.

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CDMA Downlink Receiver Based on PIC Structure

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