分布式MIMO-OFDM系统的同步捕获算法

许魁; 沈越泓

doi:10.3724/SP.J.1146.2007.00291

分布式MIMO-OFDM系统的同步捕获算法

doi: 10.3724/SP.J.1146.2007.00291

许魁,
沈越泓

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出版历程
- 收稿日期: 2007-02-26
- 修回日期: 2007-09-20
- 刊出日期: 2008-09-19

Synchronization Acquisition Algorithm for Distributed MIMO-OFDM Systems

摘要

摘要: 该文提出了一种分布式多输入多输出正交频分复用(MIMO-OFDM)系统初始信号检测和同步捕获算法。该算法设计了导频符号，采用谱分析方法实现可靠的初始信号检测、粗定时和粗频偏估计，并在快速傅里叶变换(FFT)之后进行精确地频偏和定时估计。仿真结果表明，该算法在低信噪比多径瑞利信道条件下具有很好的性能。
- 分布式多输入多输出正交频分复用 /
- 谱分析 /
- 信号检测 /
- 同步捕获
Abstract: A signal detection and synchronization acquisition scheme is proposed for distributed Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) system. Reliable signal detection scheme and coarse time and coarse frequency estimation based on spectrum analysis method can be obtained by designing pilot symbols. And then the pilot symbols are used for POST-Fast Fourier Transform (FFT) precisely frequency and time estimation. The simulation results show that the new algorithm works well at low SNR over wireless multipath channel.
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参考文献(1)

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