TR2010-120

High-Order Super-Block GLRT for Non-Coherent Grassmann Codes in MIMO-OFDM Systems


    •  Koike-Akino, T.; Orlik, P., "High-Order Super-Block GLRT for Non-Coherent Grassmann Codes in MIMO-OFDM Systems", IEEE Global Telecommunications Conference (GLOBECOM), ISSN: 1930-529X, December 2010, pp. 1-6.
      BibTeX Download PDF
      • @inproceedings{Koike-Akino2010dec,
      • author = {Koike-Akino, T. and Orlik, P.},
      • title = {High-Order Super-Block GLRT for Non-Coherent Grassmann Codes in MIMO-OFDM Systems},
      • booktitle = {IEEE Global Telecommunications Conference (GLOBECOM)},
      • year = 2010,
      • pages = {1--6},
      • month = dec,
      • issn = {1930-529X},
      • url = {http://www.merl.com/publications/TR2010-120}
      • }
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  • Research Areas:

    Electronics & Communications, Wireless Communications


We investigate non-coherent multi-input multi-output (MIMO) signal processing which requires no channel state information (CSI) at either the transmitter or the receiver. With non-coherent codes on Grassmann manifold, a receiver employing generalized likelihood ratio test (GLRT) algorithm offers the maximum-likelihood performance even without CSI. However, the conventional GLRT suffers from a severe performance degradation when the channel changes fast within a coding block duration.We propose an improved GLRT algorithm referred to as high-order super-block techniques. The super-block scheme makes effective use of correlated channels for adjacent blocks in slow fading, whereas the high-order scheme can overcome the channel fluctuation during a block in fast fading. We demonstrate that the proposed scheme significantly improves performance for MIMO-OFDM with non-coherent Grassmann space-frequency block codes (SFBC).