Receiver IQ Imbalance Estimation via Pure Noise for 60 GHz Systems

  • Authors:
  • Changming Zhang;Zhenyu Xiao;Bo Gao;Li Su;Depeng Jin

  • Affiliations:
  • Department of Electronic Engineering, Tsinghua University, Beijing , China 100084;School of Electronic and Information Engineering, Beihang University, Beijing , China 100191;Department of Electronic Engineering, Tsinghua University, Beijing , China 100084;Department of Electronic Engineering, Tsinghua University, Beijing , China 100084;Department of Electronic Engineering, Tsinghua University, Beijing , China 100084

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 2014

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Abstract

This paper proposes to estimate receiver (RX) IQ imbalance via pure noise for 60 GHz millimeter-wave systems. We study the impact of RX IQ imbalance on noise, and derive the maximum-likelihood algorithm to acquire the imbalance parameters, which is decoupled from transmitter IQ imbalance, channel response, and carrier offset. Also, the proposed method has low computational complexity and meets the low-power and low-cost requirements of 60 GHz systems. Moreover, the jitter performance of the estimation reaches the corresponding Cramer---Rao lower bound under a wide range of imbalance parameters.