Title :
Widely Linear Momentum Linearly Constrained CMA for CDMA Blind Multiuser Detection
Author :
Li Guimei ; Zhou Yuanjian
Author_Institution :
Coll. of Comput. & Electron. Eng., Hunan Univ. of Commerce, Changsha, China
Abstract :
A widely linear momentum linearly constrained constant modulus algorithm for the multi-access interferences (MAI) suppression in direct sequence code division multiple access (DS-CDMA) systems is proposed and analyzed in this paper. The widely linear estimation enables constant modulus algorithm (CMA) to produce better output signal to interference plus noise ratio (SINR) and the momentum fastens the convergence. Simulations have confirmed that the proposed algorithm performs better in a DS-CDMA system by employing a BPSK modulation than other algorithms that do not use widely linear processing and momentum.
Keywords :
code division multiple access; interference suppression; multiuser detection; phase shift keying; BPSK modulation; CDMA blind multiuser detection; constant modulus algorithm; direct sequence code division multiple access system; linear momentum linearly constrained CMA; multiaccess interferences suppression; signal to interference plus noise ratio; Algorithm design and analysis; Binary phase shift keying; Convergence; Direct-sequence code-division multiple access; Interference constraints; Interference suppression; Multiaccess communication; Multiple access interference; Multiuser detection; Signal to noise ratio;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5302484
