在這個論文中, 我們探討了連續衰變通道下位元交錯編碼差
分調變架構之設計, 在非編碼相幅差分調變架構部份, 我們提
出了針對差分調變表格以及指定位元標記的設計準則及最佳
化程序, 位元錯誤率模擬顯示出, 相較於傳統差分調變規則, 運
用設計準則所設計出的差分調變表格及位元標記擁有較好的
性能. 另一方面, 使用所提出之設計準則所設計出的差分調變
表格, 將此差分調變表格應用在編碼架構上也能使得其編碼架
構擁有較好的性能. 針對摺積編碼相幅差分調變架構, 因應兩
種位元交錯器的使用, 我們依序提出了目標為提升錯誤平層區
(error
oor region) 位元錯誤率表現的設計準則, 在位元錯誤率
模擬中顯示, 使用我們提出之設計準則所設計出來的位元標記
及摺積碼的配對, 相較於傳統文獻中所提出的位元標記及摺積
碼配對, 能有較好的錯誤平層表現, 除了錯誤平層區的位元錯
誤率表現之外, 瀑布區(water-fall) 的錯誤率表現也是實用上的
重要探討議題, 而低密度奇偶碼(LDPC) 為已知編碼架構中擁
有相當優越瀑布區性能的一種編碼方式, 因此我們使用了外在
訊息轉換圖(EXIT-chart) 來針對低密度奇偶碼做碼搜尋; 在位
元錯誤率模擬中顯示, 在同樣的碼率下(code rate), 相較摺積
編碼相幅差分調變架構, 運用我們搜尋到的低密度奇偶碼做構
成的低密度奇偶碼架構確實擁有較好的瀑布區性能.

In this thesis, we investigate bit-interleaved coded dierential amplitude/
phase (APM) schemes for correlated fading channels. For uncoded
APM schemes, the design criteria and optimization procedures for table construction
and bit labeling search are investigated. For convolutional-coded
APM schemes, the design criteria, which aim at improving the performance
of error
oor region, are proposed for the use of two kinds of interleavers, respectively.
On the other hand, low-density parity-check (LDPC)-coded APM
schemes are then designed by applying EXIT (extrinsic information transfer
)-chart-based code search algorithms. The water-fall region performance of
the LDPC-coded scheme can be improved, when comparing to that of the
convolutional-coded schemes.

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