Title :
Blind adaptive Krylov subspace multiuser detection
Author :
Caaman, Antonio J. ; Segovia-Vargas, Daniel ; Ramos, Javier
Author_Institution :
Departarnento de Teoria de la Senal y Comunicaciones, Univ. Carlos III de Madrid, Spain
fDate :
6/23/1905 12:00:00 AM
Abstract :
A new method for low-complexity multiuser detection (MUD) based in the fast subspace decomposition (FSD) is proposed. The use of FSD allows the estimation of the number of users along with the multiuser detection on line. This leads to a fast multiuser estimation-detection scheme with ultra-low complexity. Furthermore, the method is proved to be strongly consistent and blind. This is applied here to the MMSE. Results included show the MMSE performance at a fraction of the computational cost reported until now. The use for UMTS-TDD receivers is also proposed
Keywords :
adaptive estimation; adaptive signal detection; code division multiple access; land mobile radio; least mean squares methods; multiuser channels; radio receivers; spread spectrum communication; Lanczos algorithm; MMSE performance; Rayleigh-Ritz approximation; UMTS-TDD receivers; baseband direct sequence CDMA; blind adaptive Krylov subspace multiuser detection; computational cost; decorrelating detector; fast multiuser estimation-detection; fast subspace decomposition; low-complexity multiuser detection; Baseband; Computational efficiency; Decorrelation; Delay; Detectors; Filtering; Hardware; Multiuser detection; Sampling methods; Testing;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-7803-7005-8
DOI :
10.1109/VTC.2001.957166
