A Resource Allocator for the Uplink of Multi-Cell OFDMA Systems

We propose a simple distributed radio resource allocation algorithm for an OFDMA cellular system, which aims at minimizing the overall transmitted power subject to a rate constraint for each user. In order to reduce the problem complexity we use a single modulation; simulations show that the resulti...

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Bibliographic Details
Published in:IEEE transactions on wireless communications 2007-08, Vol.6 (8), p.2807-2812
Main Authors: Moretti, M., Todini, A.
Format: Article
Language:English
Subjects:
Algorithms
Applied sciences
Channel allocation
Computer simulation
Equipments and installations
Exact sciences and technology
Intersymbol interference
Iterative algorithms
Linear programming
Mobile radiocommunication systems
Modulation
Multiple access
Multiple access interference
OFDM
Performance degradation
Radio spectrum management
Radiocommunications
Resource allocation
Resource management
Robustness
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Wireless communication
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Description
Summary:We propose a simple distributed radio resource allocation algorithm for an OFDMA cellular system, which aims at minimizing the overall transmitted power subject to a rate constraint for each user. In order to reduce the problem complexity we use a single modulation; simulations show that the resulting performance degradation is negligible when the number of users is high enough. Moreover, we propose a simple distributed heuristic that, by reducing the rate constraints, steers the multicell system towards an stable resource allocation. Results show that the proposed system exhibits a great robustness to the destructive effects of multiple access interference.
ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2007.06106