Title :
Non-Parametric Interference Cancellation for CDMA Uplink System
Author :
Zhang, Wei ; Sambhwani, Sharad
Author_Institution :
Corp. R&D, Qualcomm Inc., San Diego, CA, USA
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;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2012 IEEE
Conference_Location :
Quebec City, QC
Print_ISBN :
978-1-4673-1880-8
Electronic_ISBN :
1090-3038
DOI :
10.1109/VTCFall.2012.6399195
