Name
Abstract | ||
|---|---|---|
Interference suppression in spread spectrum communication systems is often essential for achieving maximum system performance. Existing interference suppression methods do not perform well for most types of nonstationary interference. We first consider interference suppression schemes based on adaptive orthogonal time-frequency decompositions, such as wavelet packet and arbitrary dyadic time-frequency tilings. These methods often reduce interference substantially, but their performance can vary dramatically with minor changes in interference characteristics such as the center frequency. To circumvent these drawbacks, we propose a multiple overdetermined tiling (MODT) with an accompanying blind interference excision scheme which appears very promising for mitigating time-frequency-concentrated interference. Simulations with narrowband, impulsive, and simultaneous impulsive and narrowband interference compare the performance of the various methods and illustrate the promise of approaches based on multiple overdetermined tilings |
Year | DOI | Venue |
|---|---|---|
1997 | 10.1109/ICASSP.1997.598906 | Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference |
Keywords | Field | DocType |
adaptive filters,adaptive signal processing,filtering theory,interference suppression,pseudonoise codes,radiofrequency interference,signal representation,signal sampling,spread spectrum communication,time-frequency analysis,wavelet transforms,DS-SS,adaptive orthogonal time-frequency decompositions,adaptive time-frequency tilings,blind interference excision,center frequency,direct sequence spread spectrum,dyadic time-frequency tilings,impulsive interference,interference characteristics,multiple overdetermined tiling,narrowband interference,nonstationary interference,oversampled signal,pseudorandom sequence,signal representation,simulations,spread spectrum communication systems,spread spectrum interference suppression,system performance,time-frequency concentrated interference,wavelet filters,wavelet packet | Overdetermined system,Telecommunications,Computer science,Adaptive filter,Interference (wave propagation),Artificial intelligence,Wavelet packet decomposition,Spread spectrum,Narrowband,Pattern recognition,Algorithm,Bandwidth (signal processing),Direct-sequence spread spectrum | Conference |
Volume | ISSN | ISBN |
3 | 1520-6149 | 0-8186-7919-0 |
Citations | PageRank | References |
7 | 0.85 | 9 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Brian S. Krongold | 1 | 10 | 1.58 |
| Michael L. Kramer | 2 | 7 | 0.85 |
| Kannan Ramchandran | 3 | 35 | 5.47 |
| Douglas L. Jones | 4 | 80 | 9.08 |