Prince, K., Krongold, B. and Dey, Subhrakanti (2007) Efficient rate-power allocation for OFDM in a realistic fading environment. In: 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring. IEEE, pp. 3076-3080. ISBN 1424402662
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Abstract
The implementation of practical adaptive resource
allocation scheme remains a key criterion to be satisfied for
realising spectrally efficient multitone wireless communications.
The ever-increasing demand for spectrally efficient broadband
wireless transmission technologies has spurred intensive research
leading towards the implementation of adaptive OFDM and
adaptive MIMO systems. Efforts in this direction have been
frustrated however by the lack of a clear and accurate description
of the fading behaviour typically encountered in the broadband
wireless transmission environment. This has been partially been
overcome by the use of mathematical modelling which captures
certain large-scale characteristics of the channel and facilitates
theoretical research. The “average” channel parameters gleaned
from these processes is typically then used to inform the design
and configuration of wireless networking equipment after the
broad application of generous safety margins. The resulting solu�tion is therefore quite robust to certain transient channel quality
degradation yet the generous safety tolerances render it unable
to exploit other transient transmission quality improvements
We seek to overcome the problems associated with this ap�proach by applying a theoretically sound novel adaptive resource
allocation framework to actual broadband wireless channel
development data. The allocation framework is derived from the
optimal OFDM allocation scheme for a known channel [1]: the
channel development data is obtained from actual measurement
of a broadband wireless mobile environment [2]. Prediction tech�niques are employed to overcome the time lag between channel
assessment and symbol transmission. We present the details of the
predictive resource allocation scheme used and include a broad
characterisation of the transmission environment in terms of the
time-varying fading processes observed. We provide some results
of the application of this scheme as typical performance levels
that may be achieved in an actual transmission environment.
Item Type: | Book Section |
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Additional Information: | Cite as: K. Prince, B. Krongold and S. Dey, "Efficient Rate-Power Allocation for OFDM in a Realistic Fading Environment," 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring, 2007, pp. 3076-3080, doi: 10.1109/VETECS.2007.630. |
Keywords: | Efficient; Rate-Power; Allocation; OFDM; Realistic; Fading Environment; |
Academic Unit: | Faculty of Science and Engineering > Electronic Engineering Faculty of Science and Engineering > Research Institutes > Hamilton Institute |
Item ID: | 14466 |
Identification Number: | 10.1109/VETECS.2007.630 |
Depositing User: | Subhrakanti Dey |
Date Deposited: | 28 May 2021 13:37 |
Publisher: | IEEE |
Refereed: | Yes |
Related URLs: | |
URI: | https://mural.maynoothuniversity.ie/id/eprint/14466 |
Use Licence: | This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here |
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