Enhancement of unequal error protection properties of LDPC codes
EURASIP Journal on Wireless Communications and Networking
Quaternary Unequal Error Protection Codes
ICMCTA '08 Proceedings of the 2nd international Castle meeting on Coding Theory and Applications
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Mobility '08 Proceedings of the International Conference on Mobile Technology, Applications, and Systems
Gallager's decoding algorithm A over high order modulations
IEEE Communications Letters
Optimal puncturing ratios and energy allocation for multiple parallel concatenated codes
IEEE Transactions on Information Theory
Code-matched interleaver design over surrogate channels
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
On unequal error protection of finite-length LDPC codes over BECs: a scaling approach
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 3
Demultiplexer design for multi-edge type LDPC coded modulation
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 2
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IEEE Transactions on Information Theory
Unequal error protection based on symmetric Slepian-Wolf coding in wireless sensor network
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Non-uniform LDPC for multi-bitplane in distributed video coding
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Modulation-assisted UEP-LDPC codes in image transmission
ISCIT'09 Proceedings of the 9th international conference on Communications and information technologies
Allerton'09 Proceedings of the 47th annual Allerton conference on Communication, control, and computing
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Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
Design of bandwidth-efficient unequal error protection LDPC codes
IEEE Transactions on Communications
Capacity-achieving codes with bounded graphical complexity and maximum likelihood decoding
IEEE Transactions on Information Theory
LDPC code design considerations for non-uniform channels
IEEE Transactions on Communications
Hybrid channel codes for efficient FSO/RF communication systems
IEEE Transactions on Communications
UEP concepts in modulation and coding
Advances in Multimedia
Improved design of unequal error protection LDPC codes
EURASIP Journal on Wireless Communications and Networking
Class of generalized Goppa codes perfect in weighted Hamming metric
Designs, Codes and Cryptography
| Hi-index | 755.02 |
This correspondence introduces a framework to design and analyze low-density parity-check (LDPC) codes over nonuniform channels. We study LDPC codes for channels with nonuniform noise distributions, rate-adaptive coding, and unequal error protection. First, we propose a technique to design LDPC codes for volume holographic memory (VHM) systems for which the noise distribution is nonuniform. We show that the proposed coding scheme has an easy design procedure and results in efficient codes for holographic memories. An important property of the proposed technique is the design of the codes that have a low error floor and low variable node degrees, while maintaining performance close to the Shannon limit. We then show that punctured LDPC codes can be studied as a special case of our design methodology for nonuniform channels. Finally, we propose a method to generate LDPC codes that can provide unequal error protection in addition to having a good overall performance. Moreover, the highly protected bits can be decoded without requiring the entire word to be decoded.