Blind Joint Symbol Detection and DOA Estimation for OFDM System with Antenna Array

Authors:
Xiaofei Zhang;Bao Feng;Dazhuan Xu
Affiliations:
Electronic Engineering Department, Nanjing University of Aeronautics & Astronautics, Nanjing, China 210016;Electronic Engineering Department, Nanjing University of Aeronautics & Astronautics, Nanjing, China 210016;Electronic Engineering Department, Nanjing University of Aeronautics & Astronautics, Nanjing, China 210016
Venue:
Wireless Personal Communications: An International Journal
Year:
2008

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Abstract

An analysis of the received signal of Orthogonal frequency division multiplexing (OFDM) system with array antennas shows that the received signal has trilinear model characteristics. Trilinear decomposition-based joint symbol detection and direction of arrival (DOA) estimation for OFDM system with antenna array is proposed in this paper. The simulation results reveal that the symbol detection performance of the proposed algorithm is very close to the post-FFT receiver with perfect channel state information; DOA estimation performance is very close to least squares method, and even this algorithm supports small sample sizes. Finally this algorithm does not require the channel fading information, DOA and training sequence or pilot information, so it has blind characteristics.