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A novel adaptive prefix interval scheme for MIMO OFDM systems | IEEE Conference Publication | IEEE Xplore

A novel adaptive prefix interval scheme for MIMO OFDM systems


Abstract:

This paper introduces a novel adaptive guard-interval scheme for multiple-input multiple-output (MIMO) orthogonal-frequency-division-multiplexing (OFDM) systems. Conventi...Show More

Abstract:

This paper introduces a novel adaptive guard-interval scheme for multiple-input multiple-output (MIMO) orthogonal-frequency-division-multiplexing (OFDM) systems. Conventional OFDM systems set the guard-intervals large enough to combat the inter-symbol interference (ISI). However, such long guard-intervals would often lead to the severe throughput reduction. We design a non-pilot-aided channel-length estimation scheme, which does not require the additional pilot overhead, and propose a new MIMO-OFDM system built on such an adaptive prefix mechanism triggered by the feedback channel length information. Our simulations show that the proposed scheme greatly outperforms the conventional MIMO-OFDM systems.
Date of Conference: 24-27 May 2009
Date Added to IEEE Xplore: 26 June 2009
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Conference Location: Taipei, Taiwan

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