相差空時調變是多天線系統的相差編碼，而將相差空時調變加上籬柵編碼，稱為籬柵編碼之相差空時調變，能有更好的錯誤效能。本論文研究籬柵編碼差分空時調變，針對資料矩陣為8PSK對角矩陣、QPSK或8PSK的正交矩陣、QPSK或8PSK的超級正交矩陣的情形下，分別對於同調與非同調距離定義做集合分割、碼搜尋和距離分析，然後進行錯誤率模擬的比較。;Differential space-time modulation is differential encoding in multiple-antenna systems, and differential space-time modulation combined with trellis codes, called trellis-coded differential space-time modulation, can provides better error performance. In this thesis, we investigate trellis-coded differential space-time modulation whose information matrix is the diagonal matrix using 8PSK, the orthogonal matrix using QPSK or 8PSK, and the super-orthogonal matrix using QPSK or 8PSK. Then we do set partitioning, code searches, and distances analysis base on the definition of the coherent and the noncoherent distance separately. At last, we compare various codes by the computer simulations.
