Title :
Matched filters for locked and unlocked interferers in DS-CDMA
Author :
Yoon, Young C. ; Leib, Harry
Author_Institution :
Dept. of Electr. Eng., McGill Univ., Montreal, Que., Canada
Abstract :
This paper investigates the design of matched filters (MF) for direct-sequence code-division multi-access (DS-CDMA) systems. We extend the work of Monk et al. (see IEEE J. Select. Areas Commun., vol.SAG-12, no.5, p.817-827, 1994) by assuming the availability of more information such as the individual powers and time delays of strong interferers. This extension permits the design of MFs which can specifically reduce the effects of locked interferers. Results for the rectangular chip pulse illustrate the signal to noise ratio (SNR) improvement the proposed MF gives over the conventional MF and noise-whitening MF
Keywords :
code division multiple access; filtering theory; matched filters; pseudonoise codes; radiofrequency interference; spread spectrum communication; DS-CDMA; SNR; direct-sequence code-division multi-access; locked interferers; matched filters design; noise-whitening matched filter; rectangular chip pulse; signal to noise ratio; strong interferers; time delays; unlocked interferers; Additive white noise; Degradation; Delay effects; Detectors; Gaussian noise; Matched filters; Multiaccess communication; Signal design; Signal processing; Signal to noise ratio;
Conference_Titel :
Communications, Computers, and Signal Processing, 1995. Proceedings., IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-2553-2
DOI :
10.1109/PACRIM.1995.519566
