Adaptive Modulation Techniques for Duplex OFDM Transmission
Keller, T. and Hanzo, L. (2000) Adaptive Modulation Techniques for Duplex OFDM Transmission. IEEE Transactions on Vehicular Technology, 49, (5), 1893-1906.
The design tradeoffs of turbo-coded burst-by-burst adaptive orthogonal frequency division multiplex (OFDM) wide-band transceivers are analyzed. We demonstrate that upon aiming for a higher throughput a higher proportion of low-quality OFDM subcarriers has to be used for the transmission of inherently vulnerable high-order modem modes, transmitting several bits per subcarrier. Upon invoking turbo coding and adjusting the modem mode switching regime near-error-free performance can be achieved at the cost of a reduced throughput. Various blind modem mode detection techniques have also been investigated and the most complex channel coding trellis-based detection algorithm was found to be the most powerful. Last, the design tradeoffs of spectral pre-equalization have been explored and qualtified. We concluded that AOFDM provides a convenient framework for adjusting the required target integrity and throughput both with and without turbo channel coding.
|Divisions:||Faculty of Physical and Applied Science > Electronics and Computer Science > Comms, Signal Processing & Control
|Date Deposited:||21 Jan 2004|
|Last Modified:||14 Aug 2012 01:37|
|Contributors:||Keller, T. (Author)
Hanzo, L. (Author)
|Further Information:||Google Scholar|
|ISI Citation Count:||148|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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