EXTENDING OFDM SYMBOLS TO REDUCE POWER CONSUMPTION

André B. J. Kokkeler; Gerard J. M. Smit

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Paper

EXTENDING OFDM SYMBOLS TO REDUCE POWER CONSUMPTION

Topics: Sustainable Wireless Communication

In Proceedings of the 1st International Conference on Smart Grids and Green IT Systems SMARTGREENS - Volume 1, 257-262, 2012 , Porto, Portugal

Authors: André B. J. Kokkeler and Gerard J. M. Smit

Affiliation: University of Twente, Netherlands

Keyword(s): Correlation, Differential Phase Shift Keying, Fourier Transforms, Frequency Division Multiplexing, Modulation.

Related Ontology Subjects/Areas/Topics: Energy and Economy ; Sustainable Computing and Communications ; Sustainable Wireless Communication

Abstract: Existing communication standards have limited capabilities to adapt to low SNR environments or to exploit low data rate requirements in a power efficient way. Existing techniques like e.g. control coding do not reduce the computational load when reducing data rates. In this paper, we introduce differential Extended Symbol OFDM (differential ES-OFDM) which is based on the transmission of symbols that are extended in time. This way it can operate at low SNR. Using differential BPSK modulation, approximately 2.1 dB SNR improvement per doubling of the symbol length (halving the bitrate) is obtained. The sensitivity to frequency offsets of differential ES-OFDM is basically independent of symbol extension. Extending symbols reduces the computational load on the radio modem within the transmitter which is essential to reduce overall power consumption. The differential ES-OFDMreceiver architecture also offers opportunities to reduce power consumption.

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Paper citation in several formats:

B. J. Kokkeler, A. and J. M. Smit, G. (2012). EXTENDING OFDM SYMBOLS TO REDUCE POWER CONSUMPTION. In Proceedings of the 1st International Conference on Smart Grids and Green IT Systems - SMARTGREENS; ISBN 978-989-8565-09-9; ISSN 2184-4968, SciTePress, pages 257-262. DOI: 10.5220/0003950002570262

@conference{smartgreens12,
author={André {B. J. Kokkeler}. and Gerard {J. M. Smit}.},
title={EXTENDING OFDM SYMBOLS TO REDUCE POWER CONSUMPTION},
booktitle={Proceedings of the 1st International Conference on Smart Grids and Green IT Systems - SMARTGREENS},
year={2012},
pages={257-262},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003950002570262},
isbn={978-989-8565-09-9},
issn={2184-4968},
}

TY - CONF

JO - Proceedings of the 1st International Conference on Smart Grids and Green IT Systems - SMARTGREENS
TI - EXTENDING OFDM SYMBOLS TO REDUCE POWER CONSUMPTION
SN - 978-989-8565-09-9
IS - 2184-4968
AU - B. J. Kokkeler, A.
AU - J. M. Smit, G.
PY - 2012
SP - 257
EP - 262
DO - 10.5220/0003950002570262
PB - SciTePress