空时编码采用多发送天线设计信道编码，联合考虑分集、编码与调制，从而提高信号在无线衰落信道中传输的可靠性。
The design of channel codes for improving the reliability of communications over fading channel using multiple transmit antennas is considered.
发射端分集、编码和调制结合空时格码，可以有效地提高信号在无线衰落信道中传输的有效性和可靠性；
Space-time trellis code combining space diversity with code and modulation, can improve efficiency and reliability of communication system in wireless channel efficiently.
传统的差分空时分组编码(DSTBC)在QPSK调制时存在着信号星座扩展。
The traditional differential space-time block code (DSTBC) suffers from the signal constellation expansion for QPSK modulation.
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