Low-complexity likelihood probability derivation algorithm for non-binary LDPC-coded modulation system
The derivation of likelihood probabilities which are sent into the decoder in many LDPC-coded modulation systems is a challenging task especially when high-order modulations are used.This is because likelihood probabilities are usually complicated functions of the channel output and their calculatio...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2013-09-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2013.09.011/ |
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| author | Guang-hua HE Bao-ming BAI Xiao MA Bing LI |
| author_facet | Guang-hua HE Bao-ming BAI Xiao MA Bing LI |
| author_sort | Guang-hua HE |
| collection | DOAJ |
| description | The derivation of likelihood probabilities which are sent into the decoder in many LDPC-coded modulation systems is a challenging task especially when high-order modulations are used.This is because likelihood probabilities are usually complicated functions of the channel output and their calculation also requires knowledge of the channel parameters.To this end,a low-complexity likelihood probability derivation algorithm was proposed.Also,the Euclidean distance between the received signal and the constellation points was considered to divide the constellation points into two signal sets.Simulation results show that the proposed algorithm provides good trade-offs between performance and complexity,making it a good candidate for the hardware implementation of the front-end in the non-binary LDPC decoders. |
| format | Article |
| id | doaj-art-d8fa74b79229465a92f2a18ba0ffc852 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2013-09-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-d8fa74b79229465a92f2a18ba0ffc8522025-01-14T06:41:16ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2013-09-0134849159674901Low-complexity likelihood probability derivation algorithm for non-binary LDPC-coded modulation systemGuang-hua HEBao-ming BAIXiao MABing LIThe derivation of likelihood probabilities which are sent into the decoder in many LDPC-coded modulation systems is a challenging task especially when high-order modulations are used.This is because likelihood probabilities are usually complicated functions of the channel output and their calculation also requires knowledge of the channel parameters.To this end,a low-complexity likelihood probability derivation algorithm was proposed.Also,the Euclidean distance between the received signal and the constellation points was considered to divide the constellation points into two signal sets.Simulation results show that the proposed algorithm provides good trade-offs between performance and complexity,making it a good candidate for the hardware implementation of the front-end in the non-binary LDPC decoders.http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2013.09.011/non-binary LDPC codeslikelihood probabilitiesdecoderdemodulations |
| spellingShingle | Guang-hua HE Bao-ming BAI Xiao MA Bing LI Low-complexity likelihood probability derivation algorithm for non-binary LDPC-coded modulation system Tongxin xuebao non-binary LDPC codes likelihood probabilities decoder demodulations |
| title | Low-complexity likelihood probability derivation algorithm for non-binary LDPC-coded modulation system |
| title_full | Low-complexity likelihood probability derivation algorithm for non-binary LDPC-coded modulation system |
| title_fullStr | Low-complexity likelihood probability derivation algorithm for non-binary LDPC-coded modulation system |
| title_full_unstemmed | Low-complexity likelihood probability derivation algorithm for non-binary LDPC-coded modulation system |
| title_short | Low-complexity likelihood probability derivation algorithm for non-binary LDPC-coded modulation system |
| title_sort | low complexity likelihood probability derivation algorithm for non binary ldpc coded modulation system |
| topic | non-binary LDPC codes likelihood probabilities decoder demodulations |
| url | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2013.09.011/ |
| work_keys_str_mv | AT guanghuahe lowcomplexitylikelihoodprobabilityderivationalgorithmfornonbinaryldpccodedmodulationsystem AT baomingbai lowcomplexitylikelihoodprobabilityderivationalgorithmfornonbinaryldpccodedmodulationsystem AT xiaoma lowcomplexitylikelihoodprobabilityderivationalgorithmfornonbinaryldpccodedmodulationsystem AT bingli lowcomplexitylikelihoodprobabilityderivationalgorithmfornonbinaryldpccodedmodulationsystem |