Space-time trellis code combining space diversity with code and modulation, can improve efficiency and reliability of communication system in wireless channel efficiently.
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；
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For the OFDM system, a scheme of combining space-time code with the adaptive power control technology is proposed with simulation results, which increases the diversity gain and the adaptive gain.
A problem addressed is the complexity imposed by a soft handover combination node in the network for combining packets received from one mobile station over parallel diversity links.