An adaptive multistage parallel interference canceller for CDMA systems over frequency selective fading channels

Author

Huang, Yung-Fa ; Wen, Jyh-Homg

Author_Institution

Dept. of Comput. Sci. & Inf. Eng., Chung Chou Inst. of Technol., Changhua, Taiwan

Volume

1

fYear

2003

fDate

21-24 Sept. 2003

Firstpage

302

Abstract

In this paper, a bit inversion (BI) procedure in previous works is further investigated over multipath frequency selective fading channels for DS-CDMA communication systems. Moreover, after the BI procedure performed with partial parallel interference cancellation (PPlC) schemes where the partial cancellation weight (PCW) is adapted by the least mean square (LMS) adaptive filtering algorithm, a full PIC is performed to closely cancel the multiple access interference (MAI). Simulation results show that the proposed four-stage BI-based full PIC (BI-FPIC) detector closely cancels the MAI over a two-path frequency selective fading channel and outperforms the LMS-based PPIC schemes.

Keywords

adaptive filters; adaptive signal processing; code division multiple access; interference suppression; least mean squares methods; mobile communication; multiuser detection; radiofrequency interference; spread spectrum communication; DS-CDMA communication systems; adaptive filtering algorithm; adaptive multistage parallel interference canceller; bit inversion; direct sequence code division multiple access; frequency selective fading channels; least mean square method; multiple access interference; multiuser detection; partial cancellation weight; Adaptive filters; Bismuth; Detectors; Fading; Filtering algorithms; Frequency; Interference cancellation; Least squares approximation; Multiaccess communication; Multiple access interference;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2003. APCC 2003. The 9th Asia-Pacific Conference on

Print_ISBN

0-7803-8114-9

Type

conf

DOI

10.1109/APCC.2003.1274363

Filename

1274363