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Performance Comparison of FFH and MCFH Spread-Spectrum Systems with Optimum Diversity Combining in Frequency-Selective Rayleigh Fading Channels
Cited 21 time in
Web of Science
Cited 28 time in Scopus
- Authors
- Issue Date
- 2001-03
- Citation
- IEEE Trans. Commun., vol. 49, no. 3, pp. 109-416, Mar. 2001
- Keywords
- Diversity methods ; frequency-hop communication ; frequency-selective Rayleigh fading ; frequency-shift keying ; spread-spectrum communication
- Description
- Paper approved by Z. Kostic, the Editor for Wireless Communication of the IEEE Communications Society. Manuscript received June 5, 1999; revised May 12, 2000.
This paper was presented in part at the 10th IEEE Symposium on Personal, Indoor and
Mobile Radio Communications (PIMRC99), Osaka, Japan, September 1999.
- Abstract
- In this letter, the performance of frequency-hopping
spread-spectrum systems employing noncoherent reception and
transmission diversity is analyzed for frequency-selective Rayleigh
fading channels. Two different types of transmission diversity systems,
a fast frequency-hopping (FFH) system and a multicarrier
frequency-hopping (MCFH) system, are investigated. In order to
combine received signals from transmit diversity channels, the optimum
diversity combining rule based on the maximum-likelihood
criterion is developed. Probability of error equations are derived,
and utilized to evaluate the performance of the two systems.
MCFH systems are found to outperform FFH systems when the
channel delay spread is severe, while FFH systems are superior
to MCFH systems when a channel varies rapidly. Furthermore,
it is found that performance enhancement due to an increase of
diversity order is more significant for MCFH systems than for
FFH systems in frequency-selective fading channels. The effect
of frequency-selective fading is also investigated in determining
optimum frequency deviations of binary frequency-shift keying
signals.
- ISSN
- 0090-6778
- Language
- English
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