Xie, Y;
Li, Z;
Li, M;
Jamieson, K;
(2016)
Augmenting Wide-band 802.11 Transmissions via Unequal Packet Bit Protection.
In: Lee, SJ and Petrioli, C and Wan, PJ, (eds.)
Proceedings of the 2016 IEEE International Conference on Computer Communications (IEEE Infocom 2016).
IEEE: San Francisco, CA, USA.
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Abstract
Due to frequency selective fading, modern wide-band 802.11 transmissions have unevenly distributed bit BERs in a packet. In this paper, we propose to unequally protect packet bits according to their BERs. By doing so, we can best match the effective transmission rate of each bit to channel condition, and improve throughput. The major design challenge lies in deriving an accurate relationship between the frequency selective channel condition and the decoded packet bit BERs, all the way through the complex 802.11 PHY layer. Based on our study, we find that the decoding error of a packet bit corresponds to dense errors in the underlying codeword bits, and the BER can be truthfully approximated by the codeword bit error density. With above observation, we propose UnPKT, scheme that protects packet bits using different MAC-layer FEC redundancies based on bit-wise BER estimation to augment wide-band 802.11 transmissions. UnPKT is software-implementable and compatible with the existing 802.11 architecture. Extensive evaluations based on Atheros 9580 NICs and GNU-Radio platforms show the effectiveness of our design. UnPKT can achieve a significant goodput improvement over state-of-the-art approaches.
| Type: | Proceedings paper |
|---|---|
| Title: | Augmenting Wide-band 802.11 Transmissions via Unequal Packet Bit Protection |
| Event: | 2016 IEEE International Conference on Computer Communications (IEEE Infocom 2016) |
| Location: | San Francisco, CA, US |
| Dates: | 10 April 2016 - 15 April 2016 |
| ISBN-13: | 9781467399531 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/INFOCOM.2016.7524450 |
| Publisher version: | https://ieeexplore.ieee.org/document/7524450 |
| Language: | English |
| Additional information: | Copyright © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1493116 |
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