NDLI: Performance of turbo coded quaternary CPM in interleaved Rician channels with estimated channel state information

Content Provider	IEEE Xplore Digital Library
Author	Singh, M.
Copyright Year	2004
Description	Author affiliation: Inst. for Infocomm Res., Singapore, Singapore (Singh, M.)
Abstract	This paper investigates the performance of a turbo-coded system transmitted over a correlated Rician flat fading channel using quaternary partial response continuous phase modulation (CPM). The system provides an attractive option for spectrally efficient communications systems. We compare the performances of a maximum a posteriori (MAP) algorithm and a soft output Viterbi algorithm (SOVA). The paper considers the hybrid concatenation of a parallel designed turbo encoder and a partial response quaternary CPM modulator. Based on the decomposition theory of CPM, the quaternary CPM modulator is decomposed into a quaternary ring continuous phase encoder (CPE) and a memoryless modulator (MM). This allows a quaternary convolutional encoder to be combined with the CPE without the need of a mapper. The hybrid design, combined with iterative decoding, yields very good performance. The results show the considerable superiority of the MAP algorithm to that of the SOVA.
Starting Page	1248
Ending Page	1252
File Size	1916172
Page Count	5
File Format	PDF
ISBN	0780385217
ISSN	10903038
DOI	10.1109/VETECF.2004.1400222
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-09-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Turbo codes Rician channels State estimation Channel state information Continuous phase modulation Fading Communication systems Viterbi algorithm Convolutional codes Iterative decoding
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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