Filter Bank Multi-Carrier Spread Spectrum with Biorthogonal Signaling for High Speed Data Transmission Through HF Skywave Channels

Haab, David B.; Moradi, Hussein; Farhang‐Boroujeny, Behrouz

doi:10.1109/milcom.2018.8599858

Cited by 2 publications

(10 citation statements)

References 9 publications

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“…Here, it is assumed that cc is known to the receiver. It should also be noted that the matrix inverse −1 cc may not exist, as is the case where the number of discrete path gains, that is, N c i in (14), is smaller than L c . This problem may be solved trivially by adding a small regularization factor to the diagonal elements of cc before inverting.…”

Section: B Channel Estimationmentioning

confidence: 99%

“…It allows reliable communications in situations where an interferer is many tens of decibels above the spread spectrum signal level, as long as some portion of the transmission band remains interference-free. Beyond its applicability to dynamic spectrum access mentioned above, another application where FBMC-SS has been found to be effective is in communication through skywave HF channels, where electromagnetic wave reflections from layers of ionosphere may be used to establish communications over hundreds or even thousands of miles, [13], [14]. HF channels, in particular, are characterized by many narrowband interferers that could be easily rejected in a FBMC-SS receiver to achieve a near-optimum performance.…”

Section: Introductionmentioning

confidence: 99%

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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: B Channel Estimationmentioning

confidence: 99%

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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“…Another line of development of FBMC-SS is presented in [20]. In this work, the use of multicodes for increasing the data rate of FBMC-SS has been discussed.…”

Section: Introductionmentioning

confidence: 99%

“…The goal of this paper is to further explore the multicode method of [20] and develop details of the respective receiver structures, following the conventional AFB-based receiver of [6], [7] and the NMF-based receiver that has been recently developed in [19]. More particularly, this paper makes the following contributions:…”

Section: Introductionmentioning

confidence: 99%

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Multicode Signaling in a Filter Bank Multicarrier Spread Spectrum System and Its Application to HF Communications

Haab

Sego

Holschuh

et al. 2023

IEEE Open J. Commun. Soc.

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The use of filter banks for implementing multicarrier spread spectrum systems leads to a class of effective waveforms that are highly resilient to partial-band interferers. Such waveforms can be also designed to keep the peak-to-average power ratio (PAPR) of the resulting signal at a minimum level. The use of multiple spreading gain vectors (known as multicodes), on the other hand, is an effective method for increasing the data rate in spread spectrum systems, in general. This paper presents a detailed analysis of a class of filter bank multicarrier spread spectrum (FBMC-SS) waveforms and demonstrates an effective receiver implementation of them when multicodes are applied. Application of the developed multicode waveform for communications over high-frequency (HF) skywave channels is also explored, and the benefits that it provides are studied both numerically, through computer simulations, and experimentally, by examining the receivers performance over a variety of skywave links.

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Filter Bank Multi-Carrier Spread Spectrum with Biorthogonal Signaling for High Speed Data Transmission Through HF Skywave Channels

Cited by 2 publications

References 9 publications

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

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

Multicode Signaling in a Filter Bank Multicarrier Spread Spectrum System and Its Application to HF Communications

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