Sparse-matrix-based compressed sensing for spectrum sensing in Flexible Wireless System

Doohwan Lee, Yoshiyuki Kabashima, Koujin Takeda, Takayuki Yamada, Kazunori Akabane, Kazuhiro Uehara

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

The Flexible Wireless System (FWS) has been proposed as a networked system for a User-Centric Wireless Networks (UCWN). UCWNs allow users to make network connections easily at all times without being conscious of any upgrades or differences in wireless systems. The FWS is a unified wireless platform that simultaneously deals with various types of wireless signals. It consists of flexible access points and a wireless signal processing platform. Various types of wireless signals are received at a distributed flexible access point and transferred to a server in the wireless signal processing platform through the wired access line. Transferred signals are separated and demodulated at the server. To achieve highly flexible and efficient radio wave data transfer between the access point and the server, this paper proposes a sparse-matrix-based compressed sensing method under the framework of the belief propagation and cavity method. Low cost implementation using interlevers and adders is also proposed. An empirical study with real data shows the proposed method achieves greater efficiency and reduced calculation cost compared to the conventional compressed sensing method.

Original languageEnglish
Pages418-422
Number of pages5
DOIs
Publication statusPublished - Dec 1 2012
Externally publishedYes
Event18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation", APCC 2012 - Jeju Island, Korea, Republic of
Duration: Oct 15 2012Oct 17 2012

Other

Other18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation", APCC 2012
CountryKorea, Republic of
CityJeju Island
Period10/15/1210/17/12

Keywords

  • belief propagation
  • cavity method
  • compressed sensing
  • Flexible Wireless System
  • sparse measurement matrix
  • User-Centric Wireless Networks

ASJC Scopus subject areas

  • Computer Networks and Communications

Fingerprint Dive into the research topics of 'Sparse-matrix-based compressed sensing for spectrum sensing in Flexible Wireless System'. Together they form a unique fingerprint.

  • Cite this

    Lee, D., Kabashima, Y., Takeda, K., Yamada, T., Akabane, K., & Uehara, K. (2012). Sparse-matrix-based compressed sensing for spectrum sensing in Flexible Wireless System. 418-422. Paper presented at 18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation", APCC 2012, Jeju Island, Korea, Republic of. https://doi.org/10.1109/APCC.2012.6388172