EM-based iterative receiver design with carrier-frequency offset estimation for MIMO OFDM systems Academic Article uri icon

abstract

  • In this letter, we study the design of expectation-maximization (EM)-based iterative receivers for multiple-input multiple-output (MIMO) orthogonal frequency-division multi-plexing systems with the presence of carrier-frequency offset (CFO). Motivated by the spirit of maximum-likelihood estimation in the EM algorithm, we first present a pilot-aided CFO estimation scheme that allows fast Fourier transform-based fast implementation. Then this CFO estimation is incorporated into the initialization step of the iterative receiver. Experimental results show the effectiveness of our receiver design in combating CFO. © 2005 IEEE.

altmetric score

  • 3

author list (cited authors)

  • Sun, Y., Xiong, Z., & Wang, X.

citation count

  • 64

publication date

  • April 2005