A study of Finite Field -based Quasi-cyclic LDPC Codes over Markov Gaussian Channels
碩士 === 國立臺灣科技大學 === 電機工程系 === 106 === In this paper, we study the performance of LDPC code which have different Coding rate over Markov-Gaussian channels. We construct parity check matrices base on subgroups of a finite field, and its matrix is a quasi-cyclic form. And simulation in different channe...
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ndltd-TW-106NTUS54421612019-05-16T00:59:41Z http://ndltd.ncl.edu.tw/handle/66k6c2 A study of Finite Field -based Quasi-cyclic LDPC Codes over Markov Gaussian Channels 使用有限域建構準循環低密度同位檢查碼在馬可夫高斯雜訊通道之研究 Jyun-Yi Lin 林峻毅 碩士 國立臺灣科技大學 電機工程系 106 In this paper, we study the performance of LDPC code which have different Coding rate over Markov-Gaussian channels. We construct parity check matrices base on subgroups of a finite field, and its matrix is a quasi-cyclic form. And simulation in different channel environment. LDPC code which based on finite fields perform well over the binary-input AWGN channel. Most importantly, these finite-field LDPC codes were shown to have low error floors, which is important for communication and data-storage systems. Most of the LDPC code constructions base on finite fields are quasi-cyclic and hence they can be efficiently encoded using simple shift-registers[1] with linear complexity[2]. In the wired and wireless communication systems Impulse noise is a important issue . The common impulse noise models. they are memoryless, which mean that their occurrences are random. However, they can’t describe the characteristics of the real channel. A memory channel such as Markov-Gaussian is introduced to address the characteristics of the real channel. To address the impulsive noise, QC-LDPC base on finite field is used in this paper to combine the maximum a posteriori (MAP) Estimation for channel estimation and use the SPA algorithm to reduce the bit error rate. Der-Feng Tseng 曾德峰 2018 學位論文 ; thesis 74 zh-TW |
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碩士 === 國立臺灣科技大學 === 電機工程系 === 106 === In this paper, we study the performance of LDPC code which have different Coding rate over Markov-Gaussian channels. We construct parity check matrices base on subgroups of a finite field, and its matrix is a quasi-cyclic form. And simulation in different channel environment. LDPC code which based on finite fields perform well over the binary-input AWGN channel. Most importantly, these finite-field LDPC codes were shown to have low error floors, which is important for communication and data-storage systems. Most of the LDPC code constructions base on finite fields are quasi-cyclic and hence they can be efficiently encoded using simple shift-registers[1] with linear complexity[2]. In the wired and wireless communication systems Impulse noise is a important issue . The common impulse noise models. they are memoryless, which mean that their occurrences are random. However, they can’t describe the characteristics of the real channel. A memory channel such as Markov-Gaussian is introduced to address the characteristics of the real channel.
To address the impulsive noise, QC-LDPC base on finite field is used in this paper to combine the maximum a posteriori (MAP) Estimation for channel estimation and use the SPA algorithm to reduce the bit error rate.
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author2 |
Der-Feng Tseng |
author_facet |
Der-Feng Tseng Jyun-Yi Lin 林峻毅 |
author |
Jyun-Yi Lin 林峻毅 |
spellingShingle |
Jyun-Yi Lin 林峻毅 A study of Finite Field -based Quasi-cyclic LDPC Codes over Markov Gaussian Channels |
author_sort |
Jyun-Yi Lin |
title |
A study of Finite Field -based Quasi-cyclic LDPC Codes over Markov Gaussian Channels |
title_short |
A study of Finite Field -based Quasi-cyclic LDPC Codes over Markov Gaussian Channels |
title_full |
A study of Finite Field -based Quasi-cyclic LDPC Codes over Markov Gaussian Channels |
title_fullStr |
A study of Finite Field -based Quasi-cyclic LDPC Codes over Markov Gaussian Channels |
title_full_unstemmed |
A study of Finite Field -based Quasi-cyclic LDPC Codes over Markov Gaussian Channels |
title_sort |
study of finite field -based quasi-cyclic ldpc codes over markov gaussian channels |
publishDate |
2018 |
url |
http://ndltd.ncl.edu.tw/handle/66k6c2 |
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