...同的频率的载波上并行传输,本身就引入了频率分集,所以应用到MIMO-OFDM系统中的空时编码叫空时频编码(Space-Time-Frequency Code,STFC)。应用了空时频编码的多天线MB-OFDM UWB系统称为STFC MB-OFDM UWB系统。
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针对MB - OFDM UWB系统的性能特征，基于理论分析系统的成对错误概率，获知编码增益和分集增益的计算公式，从而得到空时频编码方案的设计准则。
Aiming at the performance characteristics of MB-OFDM UWB, the formula for coding gain and diversity gain is worked out based on pairwise error probability of theoretical analyzing system.
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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