Paper Info
Title
Frequency-Domain Multi-Stage Soft Interference Cancellation For Ds-Cdma Uplink Signal Transmission
Abstract
It is well-known that, in DS-CDMA downlink signal transmission, frequency-domain equalization (FDE) based on minimum mean square error (MMSE) criterion can replace rake combining to achieve much improved bit error rate (BER) performance in severe frequency-selective fading channel. However, in uplink signal transmission, as each user's signal goes through a different channel, a severe multi-user interference (MUI) is produced and the uplink BER performance severely degrades compared to the downlink. When a small spreading factor is used, the uplink BER performance further degrades due to inter-chip interference (ICI). In this paper, we propose a frequency-domain multi-stage soft interference cancellation scheme for the DS-CDMA uplink and the achievable BER performance is evaluated by computer simulation. The BER performance comparison of the proposed cancellation technique and the multiuser detection (MUD) is also presented.
Year
DOI
Venue
2007
10.1093/ietcom/e90-b.5.1152
IEICE TRANSACTIONS ON COMMUNICATIONS
Keywords
Field
DocType
DS-CDMA, frequency-domain equalization (FDE), MUI cancellation, multi-user detection (MUD)
Transmission (telecommunications),Telecommunications,Data transmission,Fading,Computer science,Single antenna interference cancellation,Computer network,Multiuser detection,Minimum mean square error,Electronic engineering,Telecommunications link,Bit error rate
Journal
Volume
Issue
ISSN
E90B
5
0916-8516
Citations 
PageRank 
References 
3
0.43
7
Authors
3
Name
Order
Citations
PageRank
Koichi Ishihara1213.02
Kazuaki Takeda218825.92
Fumiyuki Adachi31588195.77