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    Asymptotic Performance of Transmit Diversity via OFDM for Multipath Channels

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    Author
    Ahmed, Nadeem; Baraniuk, Richard G.
    Date
    2004-03-18
    Abstract
    Many wireless systems exploit transmit diversity for more reliable detection of signals at the receiver. To accomplish this, coding is spread across multiple transmit antennas. An example of this is the well known "Alamouti transmit diversity", where a very simple coding scheme across multiple transmit antennas allows systems to attain performance similar to systems with multiple receive antennas. The major drawback is that this system only works when a "flat-fading" model for the channel is assumed; when used in a multipath environment, the system breaks down. Here we show that when the Alamouti code is placed within an OFDM structure, using adjacent frequency bands rather than consecutive symbol intervals, it can asymptotically achieve the same performance in multipath fading as the Alamouti code in flat-fading.
    Description
    Conference paper
    Citation
    N. Ahmed and R. G. Baraniuk, "Asymptotic Performance of Transmit Diversity via OFDM for Multipath Channels," vol. 1, 2002.
    Published Version
    http://dx.doi.org/10.1109/GLOCOM.2002.1188167
    Keyword
    transmit diversity; OFDM; frequency selective fading; multipath; multicarrier; More... DSP for Communications; transmit diversity; OFDM; frequency selective fading; multipath; multicarrier Less...
    Type
    Conference paper
    Citable link to this page
    https://hdl.handle.net/1911/19661
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    • DSP Publications [508]
    • ECE Publications [1468]

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    Home | FAQ | Contact Us | Privacy Notice | Accessibility Statement
    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892
    Site Map