Two EM-type channel estimation algorithms for OFDM with transmitter diversity Conference Paper uri icon

abstract

  • Combining Orthogonal Frequency Division Multiplexing (OFDM) with transmitter diversity can be used for capacity improvement in high-rate wireless data communication systems. For coherent detection in such systems, channel state information (CSI) is required. In this paper we investigate a Space-Alternating Generalized Expectation-Maximization (SAGE) algorithm to iteratively estimate the channel impulse responses associated with multiple transmitters and the receiver. The performance of the estimator is compared with a previously proposed Expectation-Maximization (EM) based algorithm in terms of convergence rate.

name of conference

  • IEEE International Conference on Acoustics Speech and Signal Processing

published proceedings

  • 2002 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS I-IV, PROCEEDINGS

author list (cited authors)

  • Xie, Y. Z., & Georghiades, C. N.

citation count

  • 23

complete list of authors

  • Xie, YZ||Georghiades, CN

publication date

  • May 2002