5 May 2009 An enhanced transform domain communication system (ETDCS) with narrow-band interference (NBI) avoidance capability
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Abstract
Reliable communication over hostile environment is desired by both military and civilian parties. In this paper, we propose an enhanced transform domain communication system (ETDCS) with narrow-band interference (NBI) avoidance capability. The basic idea for this system is to synthesize adaptive waveform in the frequency domain by a non-parametric spectral estimator, called Capon's method, at both the transmitter and the receiver to avoid spectrally crowded regions. This approach offers better bit error performance than existing similar systems such as the transform domain communication system (TDCS) that utilizes a parametric autoregressive (AR) spectral estimator, the wavelet domain communication system (WDCS) which uses wavelet domain periodogram, or the enhanced wavelet domain communication system (EWDCS) which employs the evolutionary wavelet spectrum (EWS). Specifically, our proposed ETDCS significantly improves the bit error performance under non-stationary interference such as swepttone interference while achieving consistent bit error performance under stationary interference such as partial band, singletone, and multitone interference. Hence, our proposed ETDCS provides a viable alternative for highly reliable communication in interference rich communication environments.
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Youngho Jo, Youngho Jo, Dapeng Wu, Dapeng Wu, } "An enhanced transform domain communication system (ETDCS) with narrow-band interference (NBI) avoidance capability", Proc. SPIE 7305, Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense VIII, 73051C (5 May 2009); doi: 10.1117/12.817024; https://doi.org/10.1117/12.817024
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