Signal separation and reconstruction method for simultaneously received multi-system signals in a unified wireless system

Takayuki Yamada, Doohwan Lee, Hiroyuki Shiba, Yo Yamaguchi, Kazuhiro Uehara

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

4 Citations (Scopus)

Abstract

These days, a wide variety of wireless systems are used and new wireless systems appear one after another on the market. In this regard, we proposed a unified wireless system that we call flexible wireless system. Comprising flexible access points and a flexible signal processing unit, it collectively receives a wideband spectrum that includes multiple signals from various wireless systems. In cases of simultaneous multiple signal reception, however, reception performance degrades due to the interference among multiple signals. To address this problem, we propose a new signal separation and reconstruction method for spectrally overlapped signals. The method analyzes spectral information obtained by the short time Fourier transform to extract amplitude and phase values at each center frequency of overlapped signals. Using these values enables signals from received radio wave data to be separated and reconstructed for simultaneous multi-system reception. Computer simulation results obtained in evaluating the method's performance confirmed its effectiveness.

Original languageEnglish
Title of host publicationProceedings of the 2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2011
Pages136-140
Number of pages5
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2011 - Osaka, Japan
Duration: Jun 1 2011Jun 3 2011

Publication series

NameProceedings of the 2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2011

Other

Other2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2011
CountryJapan
CityOsaka
Period6/1/116/3/11

Keywords

  • Flexible Wireless System
  • short-time Fourier transform
  • signal reconstruction
  • signal separation

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

Fingerprint Dive into the research topics of 'Signal separation and reconstruction method for simultaneously received multi-system signals in a unified wireless system'. Together they form a unique fingerprint.

  • Cite this

    Yamada, T., Lee, D., Shiba, H., Yamaguchi, Y., & Uehara, K. (2011). Signal separation and reconstruction method for simultaneously received multi-system signals in a unified wireless system. In Proceedings of the 2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2011 (pp. 136-140). [6030763] (Proceedings of the 2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2011). https://doi.org/10.4108/icst.crowncom.2011.245899