Title :
A novel blind adaptive multiuser detection algorithm based on interference subspace estimation
Author :
Xu, Bin ; Yang, Chenyang ; Mao, Shiyi
Author_Institution :
Dept. of Electr. Eng., Beijing Univ. of Aeronaut. & Astronaut., China
Abstract :
A novel blind adaptive multiuser detection algorithm for DS-CDMA based on interference subspace estimation is presented. In the new algorithm, the signal subspace is composed of the signature waveform of the desired user and the estimated interference subspace spanned by the signature waveforms of the interfering users. The proposed multiuser detector offers substantial performance improvement over the recently proposed multiuser detectors based on signal subspace estimation with little attendant increase in computational complexity. Numerical simulation results are provided to support our claims
Keywords :
adaptive signal detection; code division multiple access; interference suppression; mobile radio; multiuser channels; numerical analysis; spread spectrum communication; DS-CDMA; blind adaptive multiuser detection; interference subspace estimation; multi-access interference; multiuser detector; numerical simulation; performance; signal subspace; signature waveform; Adaptive signal detection; Computational complexity; Covariance matrix; Detectors; Multiaccess communication; Multiple access interference; Multiuser detection; Numerical simulation; Signal detection; Signal to noise ratio;
Conference_Titel :
Info-tech and Info-net, 2001. Proceedings. ICII 2001 - Beijing. 2001 International Conferences on
Conference_Location :
Beijing
Print_ISBN :
0-7803-7010-4
DOI :
10.1109/ICII.2001.983647
