Link Adaptation can dynamically adjust a number of transmission parameters, most often modulation and coding, to reflect the characteristics of the wireless link to improve throughput and maintain link reliability. Most LA algorithms require only an estimate of the signal-to-noise ratio (SNR) to select an appropriate PHY mode, relying on the assumption of an AWGN channel. For channels experiencing frequency selective fading however, the conventional approach fails to accurately represent the stochastic variability across independent channels, resulting in inaccurate prediction of the current channel state and failure in selecting appropriate transmission parameters. A new channel quality metric is proposed in this paper that attempts to estimate the likelihood of packet errors in a fading channel and adjust Modulation and Coding Scheme (MCS) selection across each fading realisation independently. Results show improved mode selection efficiency over the conventional LA approach with added flexibility, as this approach is independent of the channel environment, providing a universal solution to LA.
|Translated title of the contribution||A multiuser, multicarrier link adaptation atrategy for fading channels with PER constraints|
|Title of host publication||IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011|
|Publisher||Institute of Electrical and Electronics Engineers (IEEE)|
|Pages||1 - 5|
|Number of pages||5|
|Publication status||Published - May 2011|
|Event||73rd Vehicular Technology Conference 2011 (VTC 2011-Spring) - Budapest, Hungary|
Duration: 1 May 2011 → …
|Conference||73rd Vehicular Technology Conference 2011 (VTC 2011-Spring)|
|Period||1/05/11 → …|
Bibliographical noteRose publication type: Conference contribution
Additional information: With accompanying conference poster
Sponsorship: The authors wish to acknowledge the financial support of Toshiba Research Europe Limited.
This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to firstname.lastname@example.org.
By choosing to view this document, you agree to all provisions of the copyright laws protecting it.