Title :
Narrow-band interference suppression in spread spectrum communication with iterative decoding
Author :
Wang, Jun ; Geraniotis, Evaggelos
Author_Institution :
Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD, USA
Abstract :
It is known that the narrow-band interference rejection capability of a direct-sequence spread-spectrum system can be enhanced by suitably processing the received signal prior to correlating it with the PN sequence. These processing schemes include those based upon least-mean-square estimation techniques and those based upon transform domain processing structures. In this paper, soft output decoding is used to further enhance the performance of the interference rejector. Iterative algorithms that use the decoding information to improve the interference estimate are proposed, based on time domain LMS filtering and frequency excision
Keywords :
filtering theory; interference suppression; iterative decoding; least mean squares methods; radiofrequency interference; spread spectrum communication; time-domain analysis; DS-SS; LMS estimation; PN sequence; direct-sequence spread-spectrum system; frequency excision; interference estimate; interference rejector performance; iterative algorithms; iterative decoding; least-mean-square estimation; narrow-band interference suppression; received signal processing; soft output decoding; spread spectrum communication; time domain LMS filtering; transform domain processing; Frequency estimation; Information filtering; Information filters; Interference suppression; Iterative algorithms; Iterative decoding; Least squares approximation; Narrowband; Signal processing; Spread spectrum communication;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2000 IEEE Sixth International Symposium on
Conference_Location :
Parsippany, NJ
Print_ISBN :
0-7803-6560-7
DOI :
10.1109/ISSSTA.2000.878089
