An explicit time delay estimation algorithm with phase compensation
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    Abstract:

    In order to improve signal quality,the combined system needs to complete the time delay estimation and compensation between intermediate-frequency signals in the multi-antenna combining technology. The newly introduced phase difference when using same local oscillator to make frequency conversion to the two signals will malfunction the Explicit Time Delay Estimation(ETDE) algorithm. To realize the unbiased time delay estimation,an adjustable phase compensator is added to the ETDE algorithm to decouple the time delay and the phase difference. Theoretical analysis and simulation results indicate that the novel algorithm can estimate and track the time delay accurately regardless of phase difference, with 1+3(ω/π)2 faster convergence rate and at least 3 dB smaller variances compared to the ETDE algorithm with no phase difference.

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伍 警,蒋鸿宇,李 兵,胡茂海,邢政利.一种引入相位补偿的直接时延估计算法[J]. Journal of Terahertz Science and Electronic Information Technology ,2018,16(4):697~702

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History
  • Received:March 15,2017
  • Revised:May 07,2017
  • Adopted:
  • Online: September 04,2018
  • Published: