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.

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。

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The pairwise error probability (PEP) of space-time trellis codes (STTC) was investigated to evaluate the performance of STTC over fading channels.

为获得衰落信道中空时网格码(STTC)的性能估计，对STTC的成对差错概率(PEP)进行了研究。

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The bits error ratio (BER) of the system is analyzed theoretically, and the probability to improve the performance by using the hardware-limit is evaluated.

对系统的误码性能进行了理论分析，并讨论了在系统中加入硬件限幅器以提高系统性能的可能性。

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