K-Factor Estimation for Wireless Communications Over Rician Frequency-Flat Fading Channels

作者：Wang, Junfeng^*; Cui, Yue^*; Sun, Haixin; Feng, Xiao; Han, Guangjie; Wen, Miaowen; Li, Jianghui; Esmaiel, Hamada

来源：IEEE Wireless Communications Letters, 2021, 10(9): 2037-2040.

DOI：10.1109/LWC.2021.3091316

• K-factor
• Rician distribution
• frequency-flat fading channels
• wireless communications

In this letter, a new method on the K-factor estimation is proposed for wireless communications over Rician frequency-flat fading channels. Firstly, the mean and variance of the squared envelope of the received signal are respectively derived. Then, we employ them to further derive the closedform expression for the K-factor and finally present its estimation formula. Performance analyses, supported by Monte Carlo simulation results for a range of channel conditions, reveal that our proposed estimator outperforms prior techniques, and illustrate the approximate robustness of our suggested work to the signal-to-noise ratio, maximum Doppler shift, and angle of arrival without considering a priori knowledge.

• 单位
  厦门大学; 1; y; 河海大学