Maximum-likelihood diversity combining in partial-band noise

TitleMaximum-likelihood diversity combining in partial-band noise
Publication TypeJournal Article
Year of Publication1998
AuthorsLi, G., Q. Wang, V. K. Bhargava, and L. J. Mason
JournalCommunications, IEEE Transactions on
Pagination1569 -1574
Date Publisheddec.
Keywordsadaptive control, adaptive gain control, AWGN, diversity reception, FFH/MFSK spread spectrum system, frequency hop communication, frequency shift keying, gain control, interference, maximum likelihood detection, maximum-likelihood diversity combining, noise variance, optimum diversity combiner, optimum performance, partial-band noise, performance, radiofrequency interference, signal-to-noise ratio, SNR, spread spectrum communication, telecommunication control, white Gaussian noise

Maximum-likelihood diversity combining is investigated for an FFH/MFSK spread spectrum system in partial-band noise (PBN). The structure of maximum-likelihood diversity reception in PBN plus white Gaussian noise is derived. It is shown that signal-to-noise ratio and the noise variance at each hop have to be known to implement this optimum diversity combiner. Several suboptimum diversity combining schemes are also considered. The performance of the optimum combining scheme is evaluated. It is shown that adaptive gain control diversity combining actually achieves the optimum performance when interference is not very weak


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