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Spectral Efficiency of Schedulers in Non-identical Composite Links with Interference

Wu, J; Mehta, N B; Molisch, Andreas LU and Zhang, J (2007) IEEE ICC 2007 In IEEE International Conference on Communications, ICC '07. p.5218-5223
Abstract
Accurate system planning and performance evaluation

requires knowledge of the joint impact of scheduling,

interference, and fading. However, current analyses either require costly numerical simulations or make simplifying assumptions that limit the applicability of the results. In this paper, we derive analytical expressions for the spectral efficiency of cellular

systems that use either the channel-unaware but fair round robin scheduler or the greedy, channel-aware but unfair maximum signal to interference ratio scheduler. As is the case in real deployments, non-identical co-channel interference at each user, both Rayleigh fading and lognormal shadowing, and limited modulation constellation sizes are accounted... (More)
Accurate system planning and performance evaluation

requires knowledge of the joint impact of scheduling,

interference, and fading. However, current analyses either require costly numerical simulations or make simplifying assumptions that limit the applicability of the results. In this paper, we derive analytical expressions for the spectral efficiency of cellular

systems that use either the channel-unaware but fair round robin scheduler or the greedy, channel-aware but unfair maximum signal to interference ratio scheduler. As is the case in real deployments, non-identical co-channel interference at each user, both Rayleigh fading and lognormal shadowing, and limited modulation constellation sizes are accounted for in the analysis.

We show that using a simple moment generating function-based lognormal approximation technique and an accurate Gaussian-Q function approximation leads to results that match simulations well. These results are more accurate than erstwhile results that instead used the moment-matching Fenton-Wilkinson approximation method and bounds on the Q function. The spectral efficiency of cellular systems is strongly influenced by the channel

scheduler and the small constellation size that is typically used in third generation cellular systems. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
submitted
subject
in
IEEE International Conference on Communications, ICC '07.
pages
5218 - 5223
conference name
IEEE ICC 2007
external identifiers
  • Scopus:38549095272
ISBN
1-4244-0353-7
DOI
10.1109/ICC.2007.863
language
English
LU publication?
yes
id
797a0c34-40ed-423c-a603-428d932c3d6a (old id 600932)
date added to LUP
2007-12-12 11:24:15
date last changed
2017-01-01 08:13:23
@inproceedings{797a0c34-40ed-423c-a603-428d932c3d6a,
  abstract     = {Accurate system planning and performance evaluation<br/><br>
requires knowledge of the joint impact of scheduling,<br/><br>
interference, and fading. However, current analyses either require costly numerical simulations or make simplifying assumptions that limit the applicability of the results. In this paper, we derive analytical expressions for the spectral efficiency of cellular<br/><br>
systems that use either the channel-unaware but fair round robin scheduler or the greedy, channel-aware but unfair maximum signal to interference ratio scheduler. As is the case in real deployments, non-identical co-channel interference at each user, both Rayleigh fading and lognormal shadowing, and limited modulation constellation sizes are accounted for in the analysis.<br/><br>
We show that using a simple moment generating function-based lognormal approximation technique and an accurate Gaussian-Q function approximation leads to results that match simulations well. These results are more accurate than erstwhile results that instead used the moment-matching Fenton-Wilkinson approximation method and bounds on the Q function. The spectral efficiency of cellular systems is strongly influenced by the channel<br/><br>
scheduler and the small constellation size that is typically used in third generation cellular systems.},
  author       = {Wu, J and Mehta, N B and Molisch, Andreas and Zhang, J},
  booktitle    = {IEEE International Conference on Communications, ICC '07.},
  isbn         = {1-4244-0353-7},
  language     = {eng},
  pages        = {5218--5223},
  title        = {Spectral Efficiency of Schedulers in Non-identical Composite Links with Interference},
  url          = {http://dx.doi.org/10.1109/ICC.2007.863},
  year         = {2007},
}