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research article

Correlation-aware Resource Allocation in Multi-Cell Networks

Bandari, Dorna  
•
Pottie, Greg  
•
Frossard, Pascal  
2012
IEEE Transactions on Wireless Communications

We propose a cross-layer strategy for resource allocation between spatially correlated sources in the uplink of multi-cell FDMA networks. Our objective is to find the optimum power and channel allocation to the different sources, in order to minimize the maximum distortion achieved in decoding any source data in the network. This problem is NP-hard and finding the optimal solution is not computationally feasible. We propose a three-step algorithm to be performed separately in each cell, which finds cross-layer resource allocation in simple steps. This method separates the problem into inter-cell resource management, grouping of sources for joint decoding, and intra-cell channel assignment. For each of these steps we propose methods that satisfy different design constraints and analyze them by simulations. We show that, while using correlation in compression and joint decoding can achieve 25% distortion reduction over independent decoding, the improvement grows to 37% when correlation is also utilized in resource allocation. This significant distortion reduction motivates further work in correlation-aware resource allocation. Overall, our solution is able to achieve a 60% decrease in 5 percentile distortion compared to independent allocation methods.

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Type
research article
DOI
10.1109/Twc.2012.101912.112297
Web of Science ID

WOS:000312836900022

ArXiv ID

1112.2723

Author(s)
Bandari, Dorna  
Pottie, Greg  
Frossard, Pascal  
Date Issued

2012

Publisher

Institute of Electrical and Electronics Engineers

Published in
IEEE Transactions on Wireless Communications
Volume

11

Issue

12

Start page

4438

End page

4445

Subjects

LTS4

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LTS4  
Available on Infoscience
January 24, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/77062
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