Non-Parametric Interference Cancellation for CDMA Uplink System

Author

Zhang, Wei ; Sambhwani, Sharad

Author_Institution

Corp. R&D, Qualcomm Inc., San Diego, CA, USA

fYear

2012

fDate

3-6 Sept. 2012

Firstpage

1

Lastpage

5

Abstract

Uplink capacity of a code division multiple access (CDMA) system is limited by the mutual interference among users. It is well known that interference cancellation can significantly increase the CDMA uplink capacity. In this paper, we present a new interference cancellation scheme based on non-parametric channel estimation and waveform reconstruction. Compared with the traditional parametric scheme, the new scheme can effectively solve the model mismatch problem caused by a multipath channel. We also propose channel estimation cleaning methods to further improve the performance.

Keywords

channel estimation; code division multiple access; interference suppression; multipath channels; CDMA uplink system; channel estimation cleaning method; code division multiple access; model mismatch problem; multipath channel; nonparametric channel estimation; nonparametric interference cancellation; uplink capacity; waveform reconstruction; Channel estimation; Correlators; Delay; Interference cancellation; Parametric statistics; Receivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Fall), 2012 IEEE

Conference_Location

Quebec City, QC

ISSN

1090-3038

Print_ISBN

978-1-4673-1880-8

Electronic_ISBN

1090-3038

Type

conf

DOI

10.1109/VTCFall.2012.6399195

Filename

6399195