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http://dx.doi.org/10.7840/kics.2013.38A.6.471

UEP Effect Analysis of LDPC Codes for High-Quality Communication Systems  

Yu, Seog Kun (경북대학교 IT 대학 전자공학부)
Joo, Eon Kyeong (경북대학교 IT 대학 전자공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.38A, no.6, 2013 , pp. 471-478 More about this Journal
Abstract
Powerful error control and increase in the number of bits per symbol should be provided for future high-quality communication systems. Each message bit may have different importance in multimedia data. Hence, UEP(unequal error protection) may be more efficient than EEP(equal error protection) in such cases. And the LDPC(low-density parity-check) code shows near Shannon limit error correcting performance. Therefore, the effect of UEP with LDPC codes is analyzed for high-quality message data in this paper. The relationship among MSE(mean square error), BER(bit error rate) and the number of bits per symbol is analyzed theoretically. Then, total message bits in a symbol are classified into two groups according to importance to prove the relationship by simulation. And the UEP performance is obtained by simulation according to the number of message bits in each group with the constraint of a fixed total code rate and codeword length. As results, the effect of UEP with the LDPC codes is analyzed by MSE according to the number of bits per symbol, the ratio of the message bits, and protection level of the classified groups.
Keywords
unequeal error protection; low-density parity-check codes; high-quality communication systems; mean square error;
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Times Cited By KSCI : 1  (Citation Analysis)
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