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A Modified Early-Late Gate for Blind Symbol Timing Recovery of OFDM Systems

机译:一种用于OFDM系统盲符号定时恢复的改进的早期门

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摘要

This paper presents a new blind symbol timing recovery technique for OFDM systems. The proposed technique is based on modifying the conventional early-late loop used for single carrier systems. The new topology exploits the interference introduced by the loss of orthogonality due to symbol timing offsets. The new structure is completely non data-aided and is independent of the OFDM symbol structure. The new technique can extract symbol timing with carrier frequency offset up to 94% of the OFDM spectrum.
机译:本文提出了一种新的用于OFDM系统的盲符号定时恢复技术。所提出的技术基于修改用于单载波系统的常规早期-晚期环路。新的拓扑利用了由于符号定时偏移而导致的正交性损失所引入的干扰。新的结构完全没有数据辅助,并且独立于OFDM符号结构。这项新技术可以提取符号定时,载波频率偏移量高达OFDM频谱的94%。

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