Efficient mapping of voice calls in wireless OFDMA systems

We address the problem of efficient resource allocation and its description for constant bitrate traffic (e.g., voice calls) in wireless OFDMA systems. In such systems resources are allocated to users in a two-dimensional map. The representations of the allocated resources have to be broadcast, thus...

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Bibliographic Details
Published in:IEEE communications letters 2006-09, Vol.10 (9), p.641-643
Main Authors: Ben-Shimol, Y., Chai, E., Kitroser, I.
Format: Article
Language:English
Subjects:
Allocations
Applied sciences
Base stations
Bit rate
Broadcasting
Communication system traffic
Computer simulation
Exact sciences and technology
Frequency conversion
Information, signal and communications theory
Mapping
Mathematical models
Modulation coding
Multiplexing
Representations
Resource allocation
Resource management
Signal and communications theory
Systems engineering and theory
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Teletraffic
Throughput
Transmission and modulation (techniques and equipments)
Voice
WiMAX
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Summary:We address the problem of efficient resource allocation and its description for constant bitrate traffic (e.g., voice calls) in wireless OFDMA systems. In such systems resources are allocated to users in a two-dimensional map. The representations of the allocated resources have to be broadcast, thus generating a substantial amount of overhead transmission. Here we present an efficient mapping and allocation representation algorithm that increase the total resource utilization by reducing the mapping overhead of the uplink frame for constant bitrate voice sessions. We use the IEEE 802.16 standard for a system model and investigate by simulation the performance of the proposed solution. The results show that the required overhead can be reduced greatly
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2006.1714530