NDLI: Capacity of Nakagami multipath fading channels

Content Provider	IEEE Xplore Digital Library
Author	Alouini, M.-S. Goldsmith, A.
Copyright Year	1997
Description	Author affiliation: Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA (Alouini, M.-S.)
Abstract	We study the capacity of Nakagami multipath fading (NMF) channels with an average power constraint for three power and rate adaptation policies. We obtain closed-form solutions for NMF channel capacity (with and without diversity) for each power and rate adaptation strategy, and compare them with the additive white Gaussian noise (AWGN) channel capacity. The capacity of a NMF channel is always smaller than the capacity of an AWGN channel. Moreover, the capacities converge to the AWGN channel capacity as the Nakagami fading parameter m tends to infinity, as expected. Our results also show that optimal power and rate adaptation yields a small increase in capacity over just optimal rate adaptation with constant power, and this small increase in capacity diminishes as the average received carrier-to-noise ratio, m parameter, and/or number of diversity branches increase. Finally, fixed rate transmission with channel inversion suffers the largest capacity penalty. However, this penalty diminishes as the amount of fading decreases.
Starting Page	358
Ending Page	362
File Size	504160
Page Count	5
File Format	PDF
ISBN	0780336593
ISSN	10903038
DOI	10.1109/VETEC.1997.596380
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-05-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fading Channel capacity Bit error rate Additive white noise AWGN channels Degradation Diversity reception Wireless communication Land mobile radio Scattering
Content Type	Text
Resource Type	Article

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