結合相差編碼與籬柵編碼調變的碼搜尋

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姓名

呂柏宣(Bo-Shuan Lu) 查詢紙本館藏

畢業系所

通訊工程學系

論文名稱

結合相差編碼與籬柵編碼調變的碼搜尋
(Code Searches for Trellis-Coded Modulation with Differential Encoding)

相關論文

★ 全像光資訊儲存系統的編解碼	★ 具有快速改變載波相位之籬柵編碼MPSK 的非同調解碼
★ 用於非同調解碼之多層次編碼調變	★ 么正空間時間籬柵碼之解碼演算法
★ 由多層次編碼所架構之非同調碼	★ 用於非同調檢測之與空時區塊碼連結的區塊編碼調變
★ 用於正交分頻多工系統具延遲處理器的空時碼	★ 用於非同調區塊編碼MPSK之A*解碼演算法
★ 在塊狀衰退通道上的籬柵么正空時調變	★ 用於非同調區塊編碼MPSK之Chase演算法
★ 使用決定回授檢測之相差空時調變的一種趨近同調特性	★ 具延遲處理器的空時碼之軟式輸入輸出遞迴解碼
★ 用於非同調區塊編碼MPSK的最大可能性解碼演算法	★ 具頻寬效益之非同調調變
★ 非同調空時渦輪碼	★ 循環字首及補零正交分頻多工系統經預編碼後之頻譜比較

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摘要(中)

相差編碼是一個在傳送端的傳統技術，其可在接收端有簡單的非同調檢測器。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，我們在通道相位同調N為2個符號的情況下考慮籬柵編碼調變加相差編碼。此外，在多位元相位偏移調變訊號下，我們提出一種由相差編碼擴展的新籬柵編碼調變，稱為相差籬柵編碼調變。相差籬柵編碼調變是一種籬柵編碼調變加相差編碼，其籬柵圖上的狀態被定義在不同的狀態下會有不同的相差編碼。最後，我們提出一種相差編碼設計方式來完成非同調非災難性的相差籬柵編碼調變。

對於籬柵編碼調變加相差編碼以及相差籬柵編碼調變兩者，我們提出增加距離量和使用集合分割。此外，本論文將會分析集合分割、設計或搜尋到的籬柵碼以及它們的最小距離。在碼率為每一符號為2位元的情況下，我們皆找到對於籬柵編碼調變加相差編碼以及相差籬柵編碼調變兩者，比原始碼更好的新碼，其也具有較好的錯誤率。另外在碼率為每一符號為3位元的情況下，相差籬柵編碼調變使用十六位元振幅相位偏移調變會比十六位元相位偏移調變的相差籬柵編碼調變以及籬柵編碼調變加相差編碼兩者皆有更大的最小距離和更好的錯誤率。

摘要(英)

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 (TCM) is a bandwidth efficient technique which offers reliable data transmission. In this paper, we consider TCM with DE for channel phase coherence over N = 2 symbols. Besides the well-known TCM followed by DE (called TCM-DE) for MPSK signals, we propose a new trellis coding extension of DE, called differential trellis coded modulation (DTCM). DTCM is TCM with DE defined in states where distinct states may have distinct DE functions. We propose design methods of DE functions for noncoherently non-catastrophic DTCM.

For both TCM-DE using MPSK signals and DTCM, we propose additive distance measures and set partitioning. Based on the proposed set partitioning, trellis codes are designed or searched and their minimum distances are analyzed. For data rate 2 bits/symbol, the obtained new codes outperform the original codes for both TCM-DE and DTCM, and the new codes of TCM-DE and DTCM have similar bit error rate. For data rate 3 bits/symbol, DTCM using 16APSK (amplitude phase-shift keying) has better minimum distance and BER than both TCM-DE and DTCM using 16PSK.

關鍵字(中)

★ 相差編碼
★ 籬柵編碼調變
★ 非同調檢測
★ 碼搜尋

關鍵字(英)

★ Differential encoding
★ Trellis-coded modulation
★ Noncoherent detection
★ Code Searches

論文目次

摘要..................................................I
Abstract.............................................II
誌謝.................................................III
目錄..................................................VI
圖表目錄.............................................VIII
第一章緒論...........................................1
第二章回顧相差籬柵編碼調變.............................3
第三章相差籬柵編碼調變的碼搜尋........................16
第四章籬柵編碼調變加相差編碼的碼搜尋...................34
第五章結論..........................................50
參考文獻...............................................51

參考文獻

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[3] G. Ungerboeck, “Trellis-coded modulation with redundant signal sets-Part I: Introduction,” IEEE Commun. Mag., vo1. 25, no. 2, pp. 5-11, Feb. 1987.
[4] 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.
[5] R. Y. Wei, “Differential encoding by a look-up table for quadrature-amplitude modulation,” IEEE Trans. Commun., vol. 59,pp. 84-94, Jan. 2011.
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[7] C. Berrou and A. Glavieux, “Near optimum error correcting coding and decoding: Turbo-codes,” IEEE Trans. Commun., vol. 44, no. 10, pp. 1261-1271, Oct. 1996.
[8] R. Y. Wei and C. C. Huang, “Noncoherently non-catastrophic trellis coded modulation,” IEEE Trans. Commun. vol. 59, no. 2, pp. 369-375, Feb. 2011.
[9] R. Y. Wei and C. C. Huang, “Bandwidth-efficient noncoherent trellis-coded MPSK,” IEEE Trans. Commun., vol. 57, no. 10, pp. 2853-2856, Oct. 2009.
[10] G. Colavolpe, G. Ferrari, and R. Raheli, “Noncoherent iterative (turbo) detection,” IEEE Trans. Commun., vol. 48, no. 9, pp. 1488-1498, Sep. 2000.

[11] R. Y. Wei, “Differential encoding by a look-up table for quadrature-amplitude modulation,” IEEE Trans. Commun., vol. 59, pp. 84-94, Jan. 2011.
[12] M. K. Simon and D. Divsalar, “The performance of trellis-coded multilevel DPSK on a fading mobile satellite channel,” IEEE Trans. Veh. Tech., vol. 37, pp. 78-91, May 1988.
[13] G. Colavolpe and R. Raheli, “On noncoherent sequence detection of coded QAM,” IEEE Commun. Lett., vol. 2, pp. 211-213, Aug. 1998.
[14] G. Colavolpe and R. Raheli, “Noncoherent sequence detection,” IEEE Trans. Commun., vol. 47, pp. 1376-1385, Sept.1999.
[15] D. Divsalar, M. K. Simon and M. Shahshahani, “The performance of trellis-coded MDPSK with multiple symbol detection,” IEEE Trans. Commun., vol. 38, pp. 1391-1403, Sept. 1990.

指導教授

魏瑞益(Ruey-Yi Wei)

審核日期

2015-6-17

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