Frequency offset amplify-and-forward relay in OFDM system

Ayana Suzuki, Yukitoshi Sanada, Mamiko Inamori

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

Abstract

In the fourth generation mobile communication system, the frequency band higher than the bands already used for IMT-2000 has been assigned. However, the higher radio frequency increases the propagation loss. To cope with the propagation loss, relay transmission has been investigated. In this paper, a transmission diversity scheme with frequency offset in amplify-and-forward (AF) relaying is proposed. In this scheme, the frequency of the OFDM signal is shifted at the relay station. A different amount of frequency offset is given in each relay station and the signals from the relay stations are separated and combined by MMSE detection at the base station. The numerical results obtained through computer simulation show that diversity is realized and the BER performance is improved by 1-2 dB at the BER of 10 -2. When the number of the RSs increases, more BER improvement is achieved.

Original languageEnglish
Title of host publication2011 the 14th International Symposium on Wireless Personal Multimedia Communications
Subtitle of host publicationCommunications, Networking and Applications for the Internet of Things, WPMC'11
Publication statusPublished - 2011 Dec 21
Event2011 14th International Symposium on Wireless Personal Multimedia Communications: Communications, Networking and Applications for the Internet of Things, WPMC'11 - Brest, France
Duration: 2011 Oct 32011 Oct 7

Publication series

Name2011 the 14th International Symposium on Wireless Personal Multimedia Communications: Communications, Networking and Applications for the Internet of Things, WPMC'11

Other

Other2011 14th International Symposium on Wireless Personal Multimedia Communications: Communications, Networking and Applications for the Internet of Things, WPMC'11
CountryFrance
CityBrest
Period11/10/311/10/7

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ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Human-Computer Interaction

Cite this

Suzuki, A., Sanada, Y., & Inamori, M. (2011). Frequency offset amplify-and-forward relay in OFDM system. In 2011 the 14th International Symposium on Wireless Personal Multimedia Communications: Communications, Networking and Applications for the Internet of Things, WPMC'11 [6081451] (2011 the 14th International Symposium on Wireless Personal Multimedia Communications: Communications, Networking and Applications for the Internet of Things, WPMC'11).