色散信道中OFDM系统信号的处理

K. S. Slipenchuk, Alexandr Filimonov
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引用次数: 0

摘要

讨论了在多径信道上传输OFDM系统信号的处理问题。建议将一般接收作为“整体”使用,并进行元素决策,而接收端的脉冲响应形式应以其实现而已知。有一种估计通信信道脉冲响应的方法:正则化法。在接收位置,OFDM信号像带通信号一样,是基于提取观测到的振荡的正交分量来处理的。这将分别要求形成信道脉冲响应的正交分量的估计。在“整体”中使用具有元素明智决策的算法接收允许您放弃在OFDM符号结构中使用前缀和后缀,这会导致带宽的增加。对新结构的OFDM符号的运行建模表明,该算法在较宽的信噪比变化范围内具有较高的抗噪能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Processing of OFDM System Signals in Dispersion Channel
The work discusses the problem of processing of OFDM system signals transmitted over multipath channel. It is proposed to use the reception in general reception in "a whole" with element-wise decision, while impulse response form at the receiving end (should be known for its implementation. There are methods for estimating the impulse response of a communication channel: the regularization method. At the receiving location, the OFDM signal, like a bandpass signal, is processed based on the extraction of the quadrature components of the observed oscillation. This, respectively, will require the formation of estimates of the quadrature components of the impulse response of the channel. The use of the algorithm reception in "a whole" with element-wise decision allows you to abandon the use of prefixes and postfixes in the structure of the OFDM symbol, which leads to an increase in bandwidth. Modeling the operation of the proposed algorithm for the new structure of the OFDM symbol showed its high noise immunity in a wide range of signal-to-noise ratio variation.
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