通过在OFDM通信系统中应用新型差分空时分组码（DSTBC），获得编码增益，无需信道估计。
By using new DSTBC in OFDM communications system channel estimation is nto necessary and coding gain is gotten.
结果和结论VBI患者存在眼动系统异常，表现为扫视时间延迟、准确度差、视动增益值降低，平稳跟踪的不对称性。
Results and ConclusionDelay lower accuracy of saccade test, decreased gain of OKN, asymmetry of horizontal ETT were showed in the patients with VBI.
计算了优树的选择差和遗传增益。
Selection differential and genetic gains are also estimated.
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