Combining of loop signals in frequency offset amplify-and-forward relay

Naoki Kikuchi, Mamiko Inamori, Yukitoshi Sanada

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

Abstract

The fourth generation mobile communication system is expected to be implemented on frequency bands higher than the bands already assigned for IMT-2000. Therefore, to compensate propagation loss, relay schemes have been investigated. Amplify-and-Forward (AF) relay has advantages in terms of lower complexity and time slot usage. However, the coupling effect causes the loop signal between transmit and receive antennas in the relay station and it can degrade the performance. Thus, in this research, a combining scheme of loop signals and original signals in the frequency offset AF relay scheme is proposed. It is shown that diversity gain and bit error rate (BER) performance vary according to the set of frequency offsets in the relays and modulation schemes. The system with 64 quadrature amplitude modulation (QAM) suffers from interference owing to frequency offsets.

Original languageEnglish
Title of host publicationIEEE Vehicular Technology Conference
DOIs
Publication statusPublished - 2013
Event2013 IEEE 77th Vehicular Technology Conference, VTC Spring 2013 - Dresden, Germany
Duration: 2013 Jun 22013 Jun 5

Other

Other2013 IEEE 77th Vehicular Technology Conference, VTC Spring 2013
CountryGermany
CityDresden
Period13/6/213/6/5

Fingerprint

Frequency Offset
Amplify-and-forward
Mobile telecommunication systems
Quadrature amplitude modulation
Bit error rate
Relay
Frequency bands
Modulation
Antennas
Quadrature Amplitude Modulation
Diversity Gain
Mobile Communication
Mobile Systems
Low Complexity
Communication Systems
Error Rate
Antenna
Interference
Vary
Propagation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Applied Mathematics

Cite this

Combining of loop signals in frequency offset amplify-and-forward relay. / Kikuchi, Naoki; Inamori, Mamiko; Sanada, Yukitoshi.

IEEE Vehicular Technology Conference. 2013. 6692481.

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

Kikuchi, N, Inamori, M & Sanada, Y 2013, Combining of loop signals in frequency offset amplify-and-forward relay. in IEEE Vehicular Technology Conference., 6692481, 2013 IEEE 77th Vehicular Technology Conference, VTC Spring 2013, Dresden, Germany, 13/6/2. https://doi.org/10.1109/VTCSpring.2013.6692481
Kikuchi, Naoki ; Inamori, Mamiko ; Sanada, Yukitoshi. / Combining of loop signals in frequency offset amplify-and-forward relay. IEEE Vehicular Technology Conference. 2013.
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