NDLI: Superposition turbo TCM for multi-rate broadcast

Content Provider	IEEE Xplore Digital Library
Author	Sun, T.W. Wesel, R.D. Shane, M.R. Jarett, K.
Copyright Year	2003
Description	Author affiliation: Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA (Sun, T.W.; Wesel, R.D.; Shane, M.R.)
Abstract	Bergmans and Cover identified the capacity region of the Gaussian degraded broadcast channel, where different receivers observe the transmitted signal to noise ratios. This paper presents a superposition turbo coding scheme that performs within 1 dB of the capacity region boundary of the degraded broadcast channel at BER of 10/sup -5/. Performance is consistent over the entire useful range of the power allocation parameter /spl alpha/. Coding for the degraded broadcast channel is equivalent to coding for unequal error protection. Adjusting /spl alpha/ changes the transmitter constellation of our encoder, and changes the degree to which error protection is unequal. When /spl alpha/ is selected to provide equal error protection, the code is essentially a multilevel turbo trellis-coded-modulation schemes with the advantage of the potential for flexible unequal error protection as /spl alpha/ is varied.
Starting Page	3145
Ending Page	3149
File Size	325010
Page Count	5
File Format	PDF
ISBN	0780378024
DOI	10.1109/ICC.2003.1204003
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-05-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Satellite broadcasting Degradation Error correction codes Modulation coding Signal to noise ratio Turbo codes Protection Multimedia communication TV broadcasting TV receivers
Content Type	Text
Resource Type	Article

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