A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2008; you can also visit <a rel="external noopener" href="http://eprints.qut.edu.au/archive/00013766/01/13766.pdf">the original URL</a>. The file type is <code>application/pdf</code>.
Adaptive Time-Frequency Spreading of Quasi-Orthogonal Block Codes for MIMO-OFDM Systems
<span title="">2006</span>
<i title="IEEE">
2006 10th IEEE Singapore International Conference on Communication Systems
</i>
Preserved Fulltext
This paper describes a novel low complexity time-frequency spreading of orthogonal block codes for MIMO-OFDM systems in highly time and frequency selective channels. The space-time codes (STC) and space-frequency codes (SFC) proposed in literature for MIMO-OFDM systems require a quasi-static channel, where the channel is assumed to be constant over a number of OFDM time symbols or OFDM subcarriers. In orthogonal block codes (OBC) this is equal to the number of transmit antennas N t employed.
<span class="external-identifiers">
<a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/iccs.2006.301391">doi:10.1109/iccs.2006.301391</a>
<a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/5slrjwyttrebxftopcr5h7s2dy">fatcat:5slrjwyttrebxftopcr5h7s2dy</a>
</span>
more »
... higher order space-diversity systems with N t ≥ 4, it is likely that the assumption of constant channel within the OBC to be violated in fast fading channels resulting performance degradation. We propose an adaptive time-frequency spreading strategy that minimizes the decoding error rate in different types of fading channels. The adaptation technique incorporated is based on a fading interference matric, which is evaluated at the transmitter using channel fading statistics. Simulation results demonstrate the effectiveness of the proposed adaptive time-frequency spreading of OBCs.
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20080819061132/http://eprints.qut.edu.au/archive/00013766/01/13766.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext">
<button class="ui simple right pointing dropdown compact black labeled icon button serp-button">
<i class="icon ia-icon"></i>
Web Archive
[PDF]
<div class="menu fulltext-thumbnail">
<img src="https://blobs.fatcat.wiki/thumbnail/pdf/fc/d5/fcd59ad3a19196abb8f081246043ae5f0a14ab31.180px.jpg" alt="fulltext thumbnail" loading="lazy">
</div>
</button>
</a>
<a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/iccs.2006.301391">
<button class="ui left aligned compact blue labeled icon button serp-button">
<i class="external alternate icon"></i>
ieee.com
</button>
</a>