Title :
Adaptive Duplicated Filters and Interference Canceller for DS-CDMA Systems: Part I - Algorithm
Author :
Nougarou, François ; Ahmed-Ouameur, Messaoud ; Massicotte, Daniel
Author_Institution :
Electr. & Comput. Eng. Dept., Univ. du Quebec a Trois-Rivieres, Trois-Rivieres, QC
Abstract :
A multistage multiuser detection (MUD) technique, the adaptive duplicated filters plus interference canceller (ADIC), is proposed in the DS-CDMA context. Of particular interest is the use of adaptive filters block (AFB) dedicated to each user with its respective input signals independent from other users´ contributions. These AFB are mixed with interference canceller block in a cascade arrangement. As shown in this paper, this proposed MUD can outperform the decision feedback soft multistage interference canceller (DF-Soft-MPIC) MUD with complexity reduction of 4. Algorithmic description and performance of low complexity MUD method are considered in this paper and FPGA implementation in a companion paper, Part II.
Keywords :
adaptive filters; code division multiple access; interference suppression; multiuser detection; spread spectrum communication; DS-CDMA systems; adaptive duplicated filters; adaptive filters block; cascade arrangement; decision feedback soft multistage interference canceller; multistage multiuser detection; Adaptive filters; Base stations; Feedback; Filter bank; Interference cancellation; Intersymbol interference; Multiaccess communication; Multiple access interference; Multiuser detection; RAKE receivers;
Conference_Titel :
Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on
Conference_Location :
New Orleans, LA
Print_ISBN :
1-4244-0920-9
Electronic_ISBN :
1-4244-0921-7
DOI :
10.1109/ISCAS.2007.378108
