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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 719-720EXIT-Chart-Based Design Method for Noncoherent...

EXIT-Chart-Based Design Method for Noncoherent LDPC-Coded Modulation in Correlated Rayleigh Fading Channels

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Abstract:

In the paper, we investigate LDPC-coded differential amplitude/phase modulation (APM) schemes for correlated Rayleigh fading channels. Through the observation for the mutual information of the extrinsic log-likelihood ratio (LLR) values of the variable nodes in the LDPC decoder, it is found that the code design methods investigated in the previous literature loses their accuracy. Consequently, a modified code design method for the outer LDPC code is proposed in this paper. It is shown that the searched LDPC code effectively improves the error performance, when compared to the convolutional-coded scheme investigated in the previous literature.

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Materials and Engineering Technology

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Periodical:

Applied Mechanics and Materials (Volumes 719-720)

Pages:

837-844

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.719-720.837

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Online since:

January 2015

Authors:

Yen Ming Chen*, Kuan Chun Chen, Yeong Luh Ueng, Ruey Yi Wei, Jen Yuan Hsu

Keywords:

Amplitude/Phase Modulation, EXIT Chart, Noncoherent Detection

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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