Title :
Space-time processing in multiple-access systems
Author :
Wang, Xiaodong ; Poor, H. Vincent
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
The problem of multiuser detection in multipath CDMA channels with a receiver antenna array is considered. The optimal space-time multiuser receiver structure is first outlined, followed by linear space-time multiuser detection methods based on iterative interference cancellation. Blind adaptive space-time multiuser detection techniques are also developed. It is seen that the proposed multiuser space-time processing techniques offer substantial performance gains over the single-user-based methods, especially in a near-far situation
Keywords :
adaptive antenna arrays; adaptive signal detection; array signal processing; code division multiple access; interference suppression; iterative methods; land mobile radio; multipath channels; multiuser channels; receiving antennas; space-time adaptive processing; spread spectrum communication; DS-CDMA; blind adaptive space-time detection; blind adaptive space-time multiuser detection; iterative interference cancellation; linear space-time multiuser detection; mobile radio network; multipath CDMA channels; multiple-access systems; multiuser detection; multiuser space-time processing; near-far situation; optimal space-time multiuser receiver structure; performance; receiver antenna array; single user based methods; Antenna arrays; Baseband; Gaussian noise; Jacobian matrices; Multiaccess communication; Multipath channels; Multiple access interference; Multiuser detection; Receiving antennas; Signal processing;
Conference_Titel :
Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5668-3
DOI :
10.1109/WCNC.1999.797800
