Title :
On the performance of the successive interference canceler for DS/CDMA signals
Author :
Lai, Kuei-Chiang ; Shynk, John J.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
We investigate the steady-state properties of the adaptive successive interference canceler (ASIC) for direct-sequence code division multiple access (DS/CDMA) signals. The ASIC is a multistage structure that sequentially detects and removes cochannel users from the received signal impinging on a single antenna element. In order to reliably remove a user, the corresponding multiple access interference (MAI) must be regenerated and subtracted from the received signal. This requires an accurate estimate of the user´s signal amplitude, which is provided by an adaptive weight that is updated at the chip rate.
Keywords :
AWGN channels; adaptive signal detection; adaptive signal processing; amplitude estimation; code division multiple access; filtering theory; interference suppression; land mobile radio; matched filters; multiuser channels; radiofrequency interference; spread spectrum communication; AWGN channel; DS/CDMA signals; LMS algorithm; adaptive successive interference canceler; adaptive weight; antenna element; chip rate; cochannel users removal; direct-sequence code division multiple access; matched filter detector; mobile radio; multiple access interference; multistage structure; multiuser detector; performance; received signal; signal amplitude estimation; steady-state properties; AWGN; Amplitude estimation; Application specific integrated circuits; Detectors; Interference cancellation; Multiaccess communication; Multiple access interference; Receiving antennas; Silicon carbide; Steady-state;
Conference_Titel :
Signals, Systems, and Computers, 1999. Conference Record of the Thirty-Third Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-5700-0
DOI :
10.1109/ACSSC.1999.832017
