Channel Coding Diversity with Mismatched Decoding Metrics

We analyze the performance of channel coding diversity with general decoding metrics in terms of the generalized mutual information (GMI). We show that the GMI of the diversity channel is less than or equal to the baud-rate weighted sum of the component GMIs; and equality is achieved only in special...

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Bibliographic Details
Published in:IEEE communications letters Vol. 15; no. 9; pp. 916 - 918
Main Authors: Nguyen, T. T., Lampe, L.
Format: Journal Article
Language:English
Published: New York, NY IEEE 01.09.2011
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Applied sciences
bit-interleaved coded modulation (BICM)
Channel coding
Channel coding diversity
Channels
Charge coupled devices
Coding
Coding, codes
Decoding
Detectors
Exact sciences and technology
generalized mutual information (GMI)
Information, signal and communications theory
Measurement
mismatched decoding
Modulation
Modulation, demodulation
Optical telecommunications
Radio frequency
Signal and communications theory
symbol-by-symbol (SBS) decoding
Telecommunications
Telecommunications and information theory
Wireless optical communications
Performance evaluation
Optical telecommunication
Wireless telecommunication
Decoding
generalized mutual information (GMI)
Radiofrequency
Channel coding
Mismatching
Free space propagation
Modulation
bit-interleaved coded modulation (BICM)
Interleaved codes
Metric
Free space optics
Channel coding diversity
mismatched decoding
Mutual information
Radio communication
symbol-by-symbol (SBS) decoding
ISSN:1089-7798, 1558-2558
Online Access:Get full text
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Description
Summary:We analyze the performance of channel coding diversity with general decoding metrics in terms of the generalized mutual information (GMI). We show that the GMI of the diversity channel is less than or equal to the baud-rate weighted sum of the component GMIs; and equality is achieved only in special cases. We then focus on bit-interleaved coded modulation (BICM) schemes and demonstrate the applicability of our findings by an example of hybrid free-space optical and radio-frequency (FSO-RF) communication.
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ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2011.071311.111110