Superimposed training designs for spatially correlated MIMO-OFDM systems
- Publication Type:
- Journal Article
- IEEE Transactions on Wireless Communications, 2010, 9 (3), pp. 876 - 880
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Only one asymptotic training design for a special case of channel correlation was proposed in the literature for spatially correlated multiple-input multiple-output with orthogonal frequency-division multiplexing (MIMO-OFDM) systems. To fill this gap, this letter applies tractable semi-definite programming (SDP) to obtain the optimal superimposed training signals for the general case of channel correlation. For a more efficient computation, two approximate designs are also proposed. Simulation results demonstrate the efficiency of our approach and its advantage over the asymptotic design. © 2006 IEEE.
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