A Novel Frequency Domain Narrowband Interference Suppression Algorithm Based on Noncoherent Accumulation

Shen, Bingxiang; Shi, Xuesen

doi:10.1109/ccet50901.2020.9213135

Cited by 2 publications

(1 citation statement)

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“…More recent works suggest suppressing the interference via transform domain methods. The techniques given in [26]- [28] apply an FFT to the received DS-SS signal and the frequency bins determined to contain interference are either attenuated or removed completely. To differentiate between an actual interfering signal and peaks in the noise floor for these approaches, some threshold estimation is required, adding further complexity.…”

Section: Introductionmentioning

confidence: 99%

Spread Spectrum Symbol Detection With Blind Interference Suppression in FBMC-SS

Haab

Moradi

Farhang‐Boroujeny

2021

IEEE Open J. Commun. Soc.

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Recent works have demonstrated Filter Bank Multicarrier Spread Spectrum (FBMC-SS) to be a robust communication scheme in the presence of high-power interferers. Existing FBMC-SS symbol detector designs based on analysis filter banks (AFB) suggest using an optimal combining scheme to suppress the interferers, necessitating some noise/interference power estimation method. In this paper, we introduce a symbol detector with blind interference suppression by extending a recently developed packet detection method. We then provide an analysis to show that the existing AFB-based symbol detector and the one proposed in this paper are equivalent in typical usage scenarios. A fully-fledged receiver design is proposed utilizing this symbol detector, with specifics presented for estimation of the channel impulse response and carrier frequency offset (CFO). We also outline a method of iterating upon the channel and CFO estimations to improve the quality of both parameters. Moreover, a modification to allow improved performance of the symbol detector at high SNR is provided. Finally, simulated performance results are presented to corroborate these findings and demonstrate the efficiency of this receiver design.

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Section: Introductionmentioning

confidence: 99%