Blind channel estimation in spatial multiplexing systems using nonredundant antenna precoding
AuthorsHelmut Bölcskei, Robert W. Heath Jr., and Arogyaswami J. Paulraj
ReferenceAsilomar Conf. on Signals, Systems, and Computers, Pacific Grove (CA), Vol. 2, pp. 1127-1132, Oct. 1999.
AbstractWireless systems employing multiple antennas at the transmitter and the receiver have recently been shown to have the potential of achieving extraordinary bit rates. In this paper, we consider the problem of blind channel estimation in single-carrier broadband multi-antenna systems. Assuming a linear time-invariant matrix channel with delay spread, we propose an algorithm for the blind estimation of the matrix channel which uses second-order cyclostationary statistics. Our approach employs nonredundant precoding and yields unique estimates (up to a diagonal matrix of phase terms). Furthermore, it does not require knowledge of the channel order, imposes no restrictions on the channel zeros, and exhibits low sensitivity to stationary noise. We present simulation results demonstrating the performance of the proposed method.
KeywordsSmart antennas, spatial multiplexing, blind channel estimation, cyclostationarity, MIMO systems
Download this document:
Copyright Notice: © 1999 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.