Title :
A novel blind multiuser detection based on adaptive quasi-Newton algorithm for eigenspace estimation
Author :
Li Guangping ; Zhenghua, Duan
Author_Institution :
Hunan Univ., Changsha, China
Abstract :
A new adaptive quasi-Newton eigen-estimation method is applied to blind multiuser detection. Computer simulation results are provided to compare its performance with the PASTd algorithm. The results show that the proposed approach performs identically to the PASTd algorithm and is significantly superior to it. Especially, the proposed approach has a relatively fast convergence rate, which may pose a problem for a time varying system, so it is a good adaptive multiuser detection algorithm.
Keywords :
Newton method; adaptive estimation; adaptive signal detection; code division multiple access; convergence of numerical methods; eigenvalues and eigenfunctions; multiuser detection; spread spectrum communication; time-varying systems; DS-CDMA communication system; adaptive detection; adaptive estimation method; adaptive quasi-Newton algorithm; adaptive quasi-Newton eigen-estimation method; blind multiuser detection; convergence rate; eigenspace estimation; time varying system; Adaptive signal detection; Computational modeling; Computer simulation; Convergence; Covariance matrix; Detectors; Educational institutions; Multiaccess communication; Multiuser detection; Timing;
Conference_Titel :
Radio Science Conference, 2004. Proceedings. 2004 Asia-Pacific
Print_ISBN :
0-7803-8404-0
DOI :
10.1109/APRASC.2004.1422428
