Frequency Hopped Systems for PCS

Borth, D.E.; Rasky, P.D.; Chiasson, G.M.; Kepler, J.F.

doi:10.1007/978-1-4615-2251-5_11

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…Several slow frequency-hopped (SFH) systems [2][3] [4] were studied for cellular applications. The GSM SFH digital cellular system, which has been deployed in many regions of the world, is an example of slow frequency hopped system (with hopping rate of 2 17 hopsis).…”

Section: Introductionmentioning

confidence: 99%

Implementation and field trial results of a fast frequency hopped FSK testbed for wireless communications

Zou¹,

Mohan²,

Čabrić³

et al.

ICC 2001. IEEE International Conference on Communications. Conference Record (Cat. No.01CH37240)

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This paper describes the implementation of a novel direct digital frequency synthesizer (DDFS) based fast frequency-hopping frequency shift keyed (FSK) testbed capable of transmitting 160 kbps with a hopping rate up to 80 khops/s. The testbed is equipped with a variety of user-defined parameters in order to fully characterize its performance over the physical channel. Initial measurements using the testbed were carried out in different wireless environments and indicate that higher hopping rates can significantly improve radio link quality when proper diversity combining is utilized.

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Section: Introductionmentioning

confidence: 99%

Implementation and field trial results of a fast frequency hopped FSK testbed for wireless communications

Zou¹,

Mohan²,

Čabrić³

et al.

ICC 2001. IEEE International Conference on Communications. Conference Record (Cat. No.01CH37240)

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A high data rate, slow frequency-hop multimedia system for mobile applications

Desai

Kepler²,

Peursem³

Proceedings of ICUPC 97 - 6th International Conference on Universal Personal Communications

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Comparison of Optimum Demodulation of CPFSK With Limiter-Discriminator Performance in Jamming, Interference and Noise

Hampton

Oetting

Merheb

MILCOM 2005 - 2005 IEEE Military Communications Conference

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This study examines the potential performance benefits and implementation issues associated with using a maximum likelihood demodulator in place of the commonly employed limiter-discriminator to demodulate a Continuous-Phase Frequency Shift Keyed (CPFSK) signal in jamming, interference and thermal noise.The comparison is based on the results of running detailed computer simulations. The types of jamming that are considered include noise, tone, and follower jamming. The results show that the optimum demodulator can perform significantly better than the limiter-discriminator, ranging from an improvement of approximately 2 dB in thermal noise to as much as 7 dB in certain types of jamming environments. The results also show that the optimum demodulator provides better immunity against adjacent channel interference. In addition to considering performance advantages of optimum demodulation, the practicality of implementing the optimum demodulator is also addressed. Results are presented showing the relationship between data rate and the size and cost needed to implement the optimum demodulator using FPGA technology.

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Frequency Hopped Systems for PCS

Cited by 4 publications

References 7 publications

Implementation and field trial results of a fast frequency hopped FSK testbed for wireless communications

Implementation and field trial results of a fast frequency hopped FSK testbed for wireless communications

A high data rate, slow frequency-hop multimedia system for mobile applications

Comparison of Optimum Demodulation of CPFSK With Limiter-Discriminator Performance in Jamming, Interference and Noise

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