Title :
A low complexity blind multiuser detector
Author :
Wu, Feng ; Yang, Chenyang ; Xu, El ; Mao, Shiyi
Author_Institution :
Dept. of Electr. Eng., Beijing Univ. of Aeronaut. & Astronaut., China
Abstract :
A low complexity method of signal subspace estimation without eigendecomposition and its application to multiuser detection is presented. In the new method, the signal subspace is spanned by the signature waveform of the desired user and the interference subspace which can be estimated through the columns of the correlation matrix. It has almost identical performance to the recently proposed multiuser detectors based on signal subspace estimated by eigendecomposition. Numerical simulation results are provided to support our claims.
Keywords :
correlation methods; functional equations; interference suppression; matrix algebra; multiuser detection; parameter estimation; blind multiuser detector; correlation matrix; interference subspace; low complexity method; multiuser detection; numerical simulation; performance; signal subspace estimation; signature waveform; Autocorrelation; Covariance matrix; Detectors; Interference; Matched filters; Multiaccess communication; Multiuser detection; Numerical simulation; Signal detection; Signal to noise ratio;
Conference_Titel :
Signal Processing, 2002 6th International Conference on
Print_ISBN :
0-7803-7488-6
DOI :
10.1109/ICOSP.2002.1180118
