CTH10-1: Optimization of Coding Gain for Full-Response CPM Space-Time Codes

Conditions are derived under which M-ary full-response CPM space-time codes will attain full spatial diversity and optimal coding gain. General code construction rules are desirable due to the nonlinearity and inherent memory of CPM signals which make manual design or computer search difficult. Optimization of the coding gain for CPM space-time codes is shown to depend on the CPM frequency/phase shaping pulse, modulation index, and codewords. The modulation indices and phase shaping functions that optimize the coding gain are specified. Finally, optimization of ST-CPM codewords is discussed.

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Georgia Institute of Technology
United States

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