Error probabilities for DS spread-spectrum systems using an ALE for narrow-band interference rejection

Bershad, N.J.

doi:10.1109/26.1474

Cited by 23 publications

(2 citation statements)

References 13 publications

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“…Moreover, CDMA is more effective in combating multipath and narrow-band interference than either TDMA or FDMA. Alternately, [8]- [13] present performance analysis of spread-spectrum systems employing suppression filters against narrow-band interference over AWGN channels. The suppression filter is very effective in reducing strong narrow-band interference.…”

Section: Introductionmentioning

confidence: 99%

On the use of a suppression filter for CDMA overlay

Wang

1999

IEEE Trans. Veh. Technol.

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This paper is concerned with a direct-sequence codedivision multiple-access (DS-CDMA) system operating over a Rayleigh fading and sharing common spectrum with a narrowband waveform. A suppression filter at a receiver is employed to reduce the narrow-band interference. We evaluate the average up-link bit error rate (BER) performance and investigate how the performance is influenced by various parameters, such as the number of taps of the suppression filter, the number of multipleaccess users, the ratio of narrow-band interference bandwidth to the spread-spectrum bandwidth, the interference power to signal power ratio, the ratio of the offset of the interference carrier frequency from the spread-spectrum carrier frequency to the half spread-spectrum signal bandwidth, and so on.

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Section: Introductionmentioning

confidence: 99%

On the use of a suppression filter for CDMA overlay

Wang

1999

IEEE Trans. Veh. Technol.

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“…, where is the approximate correlation time of the narrow-band signal. Most often, via a central limit theorem, it is argued that the steady-state coefficients of the filter are jointly Gaussian [6], [10] for small adaptation step size. In ( 16), the th-stage derivative of reflection coefficients in terms of forward and backward errors is shown in the following: It can be seen from ( 24) that the separate steady state and transient components of the coefficient are shown.…”

Section: A First-stage Reflection Coefficientmentioning

confidence: 99%

Adaptive lattice filters for CDMA overlay

Wang

Prahatheesan

2000

IEEE Trans. Commun.

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This paper presents the behavior of reflection coefficients of a stochastic gradient lattice (SGL) filter applied to a codedivision multiple-access overlay system. Analytic expressions for coefficients for a two-stage filter are derived in a Rayleigh fading channel with the presence of narrow-band interference and additive white Gaussian noise. It is shown that the coefficients of the lattice filter exhibit separate tracking and convergent properties, and that compared to an LMS filter, the lattice filter provides fast rate of convergence, while having good capability of narrow-band interference suppression.

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CDMA Overlay

The International Series in Engineering and Computer Science

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Error probabilities for DS spread-spectrum systems using an ALE for narrow-band interference rejection

Cited by 23 publications

References 13 publications

On the use of a suppression filter for CDMA overlay

On the use of a suppression filter for CDMA overlay

Adaptive lattice filters for CDMA overlay

CDMA Overlay

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