A multiple access differential frequency hopping system

Mills, D.G.; Edelson, Geoffrey S.; Egnor, Dianne

doi:10.1109/milcom.2003.1290366

Cited by 25 publications

(4 citation statements)

References 3 publications

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“…The United States-based organization Lockheed Sanders developed CHESS radio based on differential frequency-hopping technology [15]. With a hopping speed of up to 5000 hops/s and an information transmission rate of up to 19.2 kb/s, CHESS radio is equipped to handle tracking interference, and has considerable resistance to fading ability [16,17]. Zhongying Liu et al proposed a frequency-hopping detection method based on STFT (short-time Fourier transform) [18], which was combined with the G-function to analyze the frequency characteristics of shortwave differential frequency-hopping signals at each hop time interval, enabling the detection of hopping frequency information.…”

Section: Related Workmentioning

confidence: 99%

A Capacity Enhancement Method for Frequency-Hopping Anti-Jamming Communication Systems

Yu,

Hao,

Yao

et al. 2023

Electronics

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In this paper, we study the enhancement of channel transmission information by expanding the transmission channel in the frequency-hopping rate dimension in a communication system. This is achieved using the frequency-hopping spread spectrum (FHSS) without increasing communication resources, such as power and bandwidth. The anti-jamming capability of the original information is maintained during this process. The spectral characteristics of the extended signal for frequency-hopping (FH) transmission are investigated, a demodulation method based on carrier reconstruction is proposed, the bit error rate performance is simulated, and the capacity enhancement and anti-jamming ability of the extended signal for FH transmission are analyzed.

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Section: Related Workmentioning

confidence: 99%

A Capacity Enhancement Method for Frequency-Hopping Anti-Jamming Communication Systems

Yu,

Hao,

Yao

et al. 2023

Electronics

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“…Differential frequency hopping (DFH) is a frequency hopping digital signaling technology that achieves the desirable performance features of non-interfering spread spectrum operation, spectral reuse, multipath fading mitigation, and interference resistance [1]- [3]. DFH waveforms were originally proposed for operation in terrestrial HF (High Frequency) bands [1] and later generalized to any frequency range [2].…”

Section: Background On Dfh Modulationmentioning

confidence: 99%

Improved multipath robustness of DFH modulation in the underwater acoustic channel

Cazzanti

Egnor

Edelson

et al. 2010

Oceans 2010 MTS/Ieee Seattle

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We characterize performance improvement of differential frequency hopping modulation under two techniques that mitigate the multipath effects of the underwater acoustic channel: blind adaptive equalization and beamforming. We report results on data collected at-sea during the RACE08, SPACE08 and WHOI09 experiments, and show that the biterror rate improves with the application of these two techniques. Future improvements may combine joint single-element, blind equalization and beamforming (multi-element) approaches to leverage their respective strengths.

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“…Other potential problems arise in multi-hop communications -MUD processing introduces latency at each node which may lead to overall poor performance especially in large networks. Certainly, though, Shannon's [38] tenets "never discard information" and "render interference benign" suggest that MUD processing could yield enormous gains if the promises made in academia and initial demonstrations [39][40] can be made practical.…”

Section: Physical and Mac-layer Designmentioning

confidence: 99%

Agile radio resource management for proactive wireless networking (Invited Paper)

MacMullan

Brown²,

DeBardelaben

2005

SPIE Proceedings

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Current military operational effectiveness can degrade rapidly with increasing communications stresses such as heavy throughput and QoS demands from disadvantaged users exposed to severe channel impairments and communications threats. This paper proposes a distributed and agile radio resource management (RRM) system to maintain mission effectiveness even under significant communications stress. Agile RRM includes a well-coordinated cross-layer design with the introduction of new OSI layer features and interactions as well as methods to incorporate communications constraints and requirements in systems controlling mission planning and execution.

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A multiple access differential frequency hopping system

Cited by 25 publications

References 3 publications

A Capacity Enhancement Method for Frequency-Hopping Anti-Jamming Communication Systems

A Capacity Enhancement Method for Frequency-Hopping Anti-Jamming Communication Systems

Improved multipath robustness of DFH modulation in the underwater acoustic channel

Agile radio resource management for proactive wireless networking (Invited Paper)

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