TY - GEN

T1 - Suppression of narrow-band interference and multipath by spread-spectrum receiver using decision-feedback filters

AU - Ogawa, Toshiaki

AU - Sasase, Iwao

AU - Mori, Shinsaku

N1 - Copyright:
Copyright 2004 Elsevier B.V., All rights reserved.

PY - 1991

Y1 - 1991

N2 - The performance of a differential phase-shift-keying (DPSK) direct-sequence (DS) spread-spectrum receiver using decision-feedback (DF) filters in the presence of narrowband interference and multipath is considered. First, the general analytic expressions for the optimum tap weights of the DF filters and minimum mean square errors are obtained. Next, the authors calculate the output signal-to-noise ratio (SNR) of the system having the optimum tap weights. The authors also consider the bit-error-rate (BER) by computer simulation. Finally, the adaptive DF filters using a recursive least square (RLS) algorithm are considered. It is found that the two-sided DF filter is superior for suppressing both interference and multipath in the spread-spectrum system. The authors also find that the adaptive DF filter using the RLS algorithm has rapid convergence.

AB - The performance of a differential phase-shift-keying (DPSK) direct-sequence (DS) spread-spectrum receiver using decision-feedback (DF) filters in the presence of narrowband interference and multipath is considered. First, the general analytic expressions for the optimum tap weights of the DF filters and minimum mean square errors are obtained. Next, the authors calculate the output signal-to-noise ratio (SNR) of the system having the optimum tap weights. The authors also consider the bit-error-rate (BER) by computer simulation. Finally, the adaptive DF filters using a recursive least square (RLS) algorithm are considered. It is found that the two-sided DF filter is superior for suppressing both interference and multipath in the spread-spectrum system. The authors also find that the adaptive DF filter using the RLS algorithm has rapid convergence.

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M3 - Conference contribution

AN - SCOPUS:0026388318

SN - 0879426381

T3 - IEEE Pacific Rim Conference on Communications, Computers and Signal Processing. Conference Proceedings

SP - 673

EP - 676

BT - IEEE Pacific Rim Conference on Communications, Computers and Signal Processing. Conference Proceedings

A2 - Anon, null

PB - Publ by IEEE

T2 - Proceedings of the 1991 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Processing. Conference Proceedings

Y2 - 9 May 1991 through 10 May 1991

ER -