DocumentCode :
626924
Title :
New blind multiuser detection DS-CDMA algorithm using simplified fourth order cumulant matrices
Author :
Albataineh, Z. ; Salem, F.
Author_Institution :
Dept. of Electr. & Comput. Eng., Michigan State Univ., East Lansing, MI, USA
fYear :
2013
fDate :
19-23 May 2013
Firstpage :
1946
Lastpage :
1949
Abstract :
A new blind Detection algorithm based on simplified fourth order cumulant matrices is presented and applied to the multi-user symbol estimation problem in Direct Sequence Code Division Multiple Access (DS-CDMA) systems. The blind detection is to estimate multiple symbol sequences associated with all users in the downlink of DS-CDMA communication system using only the received wireless data and without any knowledge of the user spreading codes. The proposed algorithm takes advantage of higher cumulant matrix properties to reduce computational load and enhance performance. Bit error rate (BER) simulations of this algorithm are shown for different number of users, signal to noise ratio (SNR) and different number of symbols per user in comparison with the FAST ICA algorithm and Robust ICA. The results show that the proposed algorithm outperforms the both ICA-Detectors in estimating the symbol signals from the mixed CDMA received signals.
Keywords :
code division multiple access; codes; error statistics; BER simulations; CA-detectors; DS-CDMA communication system; FAST ´CA algorithm; SNR; bit error rate; blind detection; blind detection algorithm; blind multiuser detection DS-CDMA algorithm; computational load; cumulant matrix properties; direct sequence code division multiple access; mixed CDMA received signals; multiple symbol sequences; robust ´CA; signal to noise ratio; simplified fourth order cumulant matrices; spreading codes; symbol signals; Algorithm design and analysis; Bit error rate; Detectors; Multiaccess communication; Robustness; Signal to noise ratio; Vectors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems (ISCAS), 2013 IEEE International Symposium on
Conference_Location :
Beijing
ISSN :
0271-4302
Print_ISBN :
978-1-4673-5760-9
Type :
conf
DOI :
10.1109/ISCAS.2013.6572249
Filename :
6572249
Link To Document :
بازگشت