同調與非同調籬柵編碼調變之碼搜尋｜國立中央大學博碩士論文系統

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研究生：	許家榮 Chia-Jung Hsu
論文名稱：	同調與非同調籬柵編碼調變之碼搜尋 Code Searches for Coherent and Noncoherent Trellis-Coded Modulation
指導教授：	魏瑞益 Ruey-Yi Wei
口試委員:
學位類別：	碩士 Master
系所名稱：	資訊電機學院 - 通訊工程學系 Department of Communication Engineering
論文出版年：	2016
畢業學年度：	104
語文別：	中文
論文頁數：	58
中文關鍵詞：	碼搜尋、籬柵編碼調變
外文關鍵詞：	Code Searches, Trellis-Coded Modulation
相關次數：	點閱：19 下載：0
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相差編碼是一個在傳送端的傳統技術，它可以讓接收端做簡單的非同調檢測。另一方面，籬柵編碼調變是一種提供可靠數據傳輸的頻寬效益技術。在本論文中，我們在通道同調時間N為3個符號的情況下，考慮籬柵編碼調變加上相差編碼的設計。我們先做集合分割，再根據所得的各層最小距離做碼搜尋，並分析搜尋到的籬柵碼之最小非同調距離。會與通道同調時間N為2所搜尋到的籬柵碼比較，我們所搜尋到的籬柵碼皆有較大的最小非同調距離以及較佳之錯誤率模擬。除此之外，我們也修正同調距離的計算方式，所搜尋的籬柵碼在較多狀態個數時，會優於原本的籬柵編碼。

Differential encoding (DE) is a classical technique at the transmitter that allows simple noncoherent detection at the receiver. On the other hand, trellis-coded modulation is a bandwidth efficient technique which offers reliable data transmission. In this paper, we consider TCM with DE for channel phase coherence over N = 3 symbols.
First we do partitioning. Based on the set partitioning, trellis codes are searched and their minimum distances are analyzed. They are compared with the codes searched for N = 2. For both minimum distance and simulation results, the obtained new codes outperform code for N=2.
Besides, we propose a new coherent distance calculation method for trellis code searches. For large number of trellis states, Both minimum distance and simulation results outperform original codes.

摘要..............................................i
Abstract.......................................ii
目錄.....................................iii
圖目錄................................v
表目錄........................................vii
第一章    緒論.........................1
       1.1背景與研究動機...............1
1.2章節介紹............................2
第二章    回顧相差籬柵編碼調變..............3
2.1相差編碼...........................................3
2.2籬柵編碼調變......................................4
2.2.1集合分割.............................................5
2.2.2 Ungerborck的籬柵圖.............................6
2.3相差籬柵編碼調變.................................7
2.3.1相差編碼的新定義..................................7
2.3.2相差籬柵編碼調變..................................8
2.3.3距離量和集合分割的新定義.....................11
2.3.4相差籬柵編碼調變的籬柵圖.....................14
2.3.5相差籬柵編碼調變的碼搜尋.....................16
2.4籬柵編碼調變加相差編碼.................................18
2.4.1籬柵編碼調變加相差編碼的距離量.............18
2.4.2籬柵編碼調變加相差編碼的碼搜尋.............19


第三章    具相差編碼之籬柵編碼的碼搜尋...............21
3.1用於三符元相差檢測器的碼搜尋.......................21
3.1.1距離量和集合分割的新定義.....................21
3.1.2提出的碼搜尋方法....................................22
3.2針對8PSK做碼搜尋.............................26
3.2.1第一種距離定義..................................26
3.2.2第二種距離定義..................................27
第四章    新的碼搜尋...................................32
4.1新的碼搜尋規則..................................32
4.2使用8 PSK訊號進行非同調碼搜尋............34
4.2.1相差籬柵編碼調變的碼搜尋....................36
4.2.2籬柵編碼調變加相差編碼新的碼搜尋.........37
4.3使用8 PSK訊號進行非同調碼搜尋…......43
第五章    結論.............................47
參考文獻.....................48

                                

[1] G. Ungerboeck, “Channel coding with multilevel/phase signals,” IEEE Trans. Inform. Theory, vol. 28, pp. 55-67, Jan. 1982.
[2] G. Ungerboeck, “Trellis-coded modulation with redundant signal sets-Part I: Introduction,” IEEE Commun. Mag., vo1. 25, no. 2, pp. 5-11, Feb. 1987.
[3] G. Ungerboeck, “Trellis-coded modulation with redundant signal sets-Part II: State of the art,” IEEE Commun. Mag., vo1. 25, no. 2, pp. 12-21, Feb. 1987.
[4] R. Y. Wei, ‘‘Differential encoding by a look-up table for quadrature-amplitude modulation, ’’ IEEE Transactions on Communications, vol. 59, no. 1, pp. 84-94, Jan. 2011.
[5] R. Y. Wei and L. T. Chen, ‘‘Further results on differential encoding by a table,’’ IEEE Transactions on Communications, vol. 60, no. 9, pp. 2580-2590, Sep. 2012.
[6] R. Y. Wei, J. A. Ritcey and B. S. Lu, “TCM with differential encoding: set partitioning, trellis designs and distance analysis,” IEEE Transactions on Communications, vol. 63, no. 8, pp. 2776-2787, Aug. 2015.

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