Title :
Adaptive narrow-band interference rejection in DWMT-CDMA communications
Author :
Hou, Wen-Sheng ; Chen, Bor-Sen
Author_Institution :
Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
While combining discrete wavelet multiton (DWMT) with code division multiple access (CDMA) systems, both narrow-band interference (NBI) and multiple-access interference (MAI) arise when data is transmitted over NBI channels. In this paper, we address interference suppression and processing gain protection for multiuser detection with less noise enhancement by using a parallel canceling scheme. In order to avoid performance deterioration due to unreliable initial estimation in the parallel cancellation scheme, a cost function with proper weighting of design criterion is introduced to improve the performance of the proposed detector
Keywords :
adaptive signal detection; code division multiple access; data communication; digital communication; interference suppression; parameter estimation; wavelet transforms; DWMT-CDMA communications; adaptive narrow-band interference rejection; code division multiple access systems; cost function; design criterion weighting; discrete wavelet multiton; interference suppression; multiple-access interference; multiuser detection; narrow-band interference; parallel canceling scheme; parallel cancellation scheme; performance deterioration; processing gain protection; Cost function; Discrete wavelet transforms; Interference cancellation; Interference suppression; Multiaccess communication; Multiple access interference; Multiuser detection; Narrowband; Noise cancellation; Protection;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 1999. SPAWC '99. 1999 2nd IEEE Workshop on
Conference_Location :
Annapolis, MD
Print_ISBN :
0-7803-5599-7
DOI :
10.1109/SPAWC.1999.783043
