Degrees of freedom in adaptive modulation: a unified view

We examine adaptive modulation schemes for flat-fading channels where the data rate, transmit power, and instantaneous BER are varied to maximize spectral efficiency, subject to an average power and BER constraint. Both continuous-rate and discrete-rate adaptation are considered, as well as average...

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Bibliographic Details
Published in:	IEEE transactions on communications Vol. 49; no. 9; pp. 1561 - 1571
Main Authors:	Seong Taek Chung, Goldsmith, A.J.
Format:	Journal Article
Language:	English
Published:	New York IEEE 01.09.2001 The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:	Adaptation Bit error rate Channel estimation Channels Constellation diagram Constraints Degrees of freedom Delay estimation Estimation error Fading Feedback Mathematical analysis Modulation Modulation coding Optimization Power system reliability Spectra Transmitters
ISSN:	0090-6778, 1558-0857
Online Access:	Get full text
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