Interference detection technique using robust LLR for superposed multicarrier transmission

Naotoshi Yoda, Genji Hayashi, Tomoaki Ohtsuki, Jun Mashino, Takatoshi Sugiyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

Superposed multicarrier transmission is known to improve frequency utilization efficiency when several wireless systems share spectrum. In the superposed multicarrier transmission scheme, interference can be suppressed by setting the corresponding initial log likelihood ratio (LLR) for forward error correction (FEC) decoder to zero or proper values determined by the desired to undesired power ratio (DUR). Since this technique needs information of superposed subcarriers and DUR, in this paper we propose a superposed band and interference power estimation technique based on the residual power. Our proposed scheme adopts robust LLR for initial LLR and averages the residual power over all packets even if these contain bit errors. The superposed band is detected by comparing the averaged residual power with a threshold. Simulation results indicate that the proposed method performs faster interference detection than the conventional scheme.

Original languageEnglish
Title of host publication2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013
Pages1092-1096
Number of pages5
DOIs
Publication statusPublished - 2013 Dec 1
Event2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013 - London, United Kingdom
Duration: 2013 Sep 82013 Sep 11

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

Other

Other2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013
CountryUnited Kingdom
CityLondon
Period13/9/813/9/11

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Yoda, N., Hayashi, G., Ohtsuki, T., Mashino, J., & Sugiyama, T. (2013). Interference detection technique using robust LLR for superposed multicarrier transmission. In 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013 (pp. 1092-1096). [6666301] (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC). https://doi.org/10.1109/PIMRC.2013.6666301