Abstract
Methods of using diversity to improve frequencyshift keyed receptions in the presence of Rayleigh fading are analyzed. In the absence of prior information about signal amplitude and phase, square-law combination is optimum; the error rate for this combination method has been found. If signal amplitude and phase are exactly known prior to reception of the signal, coherent combination and detection are optimum; at low error probability this yields only a 3-db improvement. Nonoptimum switch diversity yields only slightly less diversity gain than square-law combination. For dual diversity, correlation of the fading on the separate antennas does not give a large loss if the correlation coefficient is moderate. Correlated noise yields a similar small loss.
Keywords
Rayleigh fadingFadingDiversity combiningDiversity gainDiversity (politics)Diversity schemeMathematicsStatisticsAmplitudeTelecommunicationsSquare (algebra)Phase (matter)SIGNAL (programming language)AlgorithmPhysicsComputer scienceOpticsLawPolitical scienceDecoding methods
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Publication Info
- Year
- 1958
- Type
- article
- Volume
- 46
- Issue
- 5
- Pages
- 903-910
- Citations
- 146
- Access
- Closed
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Cite This
John R. Pierce
(1958).
Theoretical Diversity Improvement in Frequency-Shift Keying.
Proceedings of the IRE
, 46
(5)
, 903-910.
https://doi.org/10.1109/jrproc.1958.286944
Identifiers
- DOI
- 10.1109/jrproc.1958.286944