... 差分空时编码; 信道估计 [gap=851]Keywords: incoherent system; channel state information; differential space-time coding; channel estimation ...
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In the fast moving environment, sometimes receiver cannot get channel state information accurately, but differential space-time coding technology may decode effectively in this condition.
在快速变化的环境中,接收端有时不能精确地获得信道状态信息,在这种条件下,差分空时编码技术可以实现有效地解码。
参考来源 - 认知MIMO系统中差分空时编码技术的研究Different with the conventional STC, differential Space-time code can keep good performance when neither the transmitter nor the receiver knows the channel state information in Rayleigh flat fading channels.
与传统空时编码不同，差分空时编码不需要任何信道状态信息，在通信终端处于高速移动环境下的快速衰落信道中仍能保持较好的性能。
参考来源 - MIMO无线通信系统中的差分酉空时编码技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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.
基于OFDM(正交频分复用)系统，提出了一种新的空频时三维编码，将网格编码调制和差分空时分组码进行组合链接设计。
Based on OFDM system, a novel space-frequency-time code which combined trellis-coded modulation with differential space-time block code was proposed.
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