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公开(公告)号:US20120039379A1
公开(公告)日:2012-02-16
申请号:US11917043
申请日:2006-06-16
IPC分类号: H04L27/01
CPC分类号: H04L27/2688 , H04L25/022 , H04L27/2665 , H04L27/2691
摘要: In time varying OFDM systems, the effect of a non-ideal time synchronization may lead to a poor performance in terms of decoded average bit error rate versus the signal-to-noise ratio. The receiver apparatus (3) of the transmission system (1) estimates a subcarrier-dependent channel frequency response and determines an intercarrier interference spreading on the basis of a cyclic shift in symbols carried by the subcarriers. Therewith, an intercarrier interference included in an OFDM signal can be canceled, even in case of a non-ideal time synchronization.
摘要翻译: 在时变OFDM系统中,非理想时间同步的影响在解码的平均误码率与信噪比方面可能导致差的性能。 传输系统(1)的接收机装置(3)根据副载波相关的信道频率响应来估计,并且基于子载波携带的符号中的循环移位来确定载波间干扰扩展。 因此,即使在非理想时间同步的情况下,也可以消除OFDM信号中包含的载波间干扰。