Title :
Space-time multiuser detection
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 signal detection; code division multiple access; interference suppression; iterative methods; land mobile radio; multipath channels; multiuser channels; radio receivers; radiofrequency interference; space-time adaptive processing; spread spectrum communication; DS-CDMA mobile radio network; blind adaptive space-time multiuser detection; data transmission; iterative interference cancellation; linear space-time multiuser detection; mobile telephony; multipath CDMA channels; multiple access interference; multiuser space-time processing; near-far situation; optimal space-time multiuser receiver; performance gains; receiver antenna array; single-user-based methods; wireless communications; Additive noise; Antenna arrays; Baseband; Gaussian noise; Multiaccess communication; Multipath channels; Multiple access interference; Multiuser detection; Radio transmitters; Receiving antennas;
Conference_Titel :
Signals, Systems & Computers, 1998. Conference Record of the Thirty-Second Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-5148-7
DOI :
10.1109/ACSSC.1998.751428
