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PHASE NOISE CANCELING OFDM RECEIVER

机译:相位噪声消除OFDM接收机

摘要

A receiver includes, in series, at least one receive antenna, a buffer, and arithmetic logic block, a symbol detector, and a phase noise estimator. A further feedback loop couples an output of the phase noise estimator to an input of the arithmetic logic block for providing an estimate of phase noise. The buffer is for storing the received signal. The arithmetic logic block, such as a multiplier, is for removing the estimate of phase noise, received via the feedback loop, from the buffered signal. The symbol detector is for estimating a symbol from the output of the arithmetic logic block. The phase noise estimator estimates phase noise from two inputs received from the symbol detector: the estimated symbol and the remainder signal. Preferably, the phase noise estimator performs an IFFT on these two inputs and Kalman filters the result. Iteratively estimating the phase noise improves precision substantially.
机译:一种接收器,包括串联的至少一个接收天线,缓冲器和算术逻辑块,符号检测器和相位噪声估计器。另一个反馈环路将相位噪声估计器的输出耦合到算术逻辑块的输入,以提供相位噪声的估计。缓冲器用于存储接收到的信号。算术逻辑块(例如乘法器)用于从缓冲信号中删除通过反馈环路接收的相位噪声估计。符号检测器用于从算术逻辑块的输出估计符号。相位噪声估计器从符号检测器接收的两个输入中估计相位噪声:估计的符号和余数信号。优选地,相位噪声估计器在这两个输入上执行IFFT,并且卡尔曼滤波结果。迭代估计相位噪声会大大提高精度。

著录项

  • 公开/公告号EP1946507A1

    专利类型

  • 公开/公告日2008-07-23

    原文格式PDF

  • 申请/专利权人 NOKIA CORPORATION;

    申请/专利号EP20060808975

  • 发明设计人 LINDH LARS;

    申请日2006-10-06

  • 分类号H04L27/26;H04J11/00;

  • 国家 EP

  • 入库时间 2022-08-21 19:55:35

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