Improvement of Diagonally Weighted Space-Time Trellis Codes with Two Transmit Antennas by Using Unitary Rotation
نویسندگان
چکیده
Diagonally weighted space-time trellis codes using onebit feedback of channel information are considered. We derive performance criteria for designing STTC and weighting matrix in perfect feedback channel. A simple modification of conventional STTC using unitary rotation is proposed and some modified STTCs are found through computer search. Simulation results show that the modified STTCs achieve the improved performance over a wide range of feedback channel condition. key words: diversity, feedback, space-time coding
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عنوان ژورنال:
- IEICE Transactions
دوره 88-B شماره
صفحات -
تاریخ انتشار 2005