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1st International ICST Conference on Quality of Service in Heterogeneous Wired/Wireless Networks

Research Article

QoS-driven asynchronous uplink subchannel allocation algorithms for space-time OFDM-CDMA systems in wireless networks

Cite
BibTeX Plain Text
  • @INPROCEEDINGS{10.1109/QSHINE.2004.45,
        author={ Xi  Zhang and Jia  Tang },
        title={QoS-driven asynchronous uplink subchannel allocation algorithms for space-time OFDM-CDMA systems in wireless networks},
        proceedings={1st International ICST Conference on Quality of Service in Heterogeneous Wired/Wireless Networks},
        publisher={IEEE},
        proceedings_a={QSHINE},
        year={2004},
        month={12},
        keywords={},
        doi={10.1109/QSHINE.2004.45}
    }
    
  • Xi Zhang
    Jia Tang
    Year: 2004
    QoS-driven asynchronous uplink subchannel allocation algorithms for space-time OFDM-CDMA systems in wireless networks
    QSHINE
    IEEE
    DOI: 10.1109/QSHINE.2004.45
Xi Zhang1, Jia Tang 1
  • 1: Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Abstract

In order to support the diverse quality of service (QoS) requirements for differentiated data applications in broadband wireless networks, advanced techniques such as space-time coding (STC) and orthogonal frequency division multiplexing (OFDM) are implemented at the physical layer. However, the employment of such techniques evidently affects the subchannel-allocation algorithms at the medium access control (MAC) layer. In this paper, we propose the QoS-driven cross-layer subchannel-allocation algorithms for data transmissions over asynchronous uplink space-time OFDM-CDMA systems. We mainly focus on QoS requirements of maximizing the best-effort throughput and proportional bandwidth fairness, while minimizing the upper-bound of scheduling delay. Our extensive simulations show that the proposed infrastructure and algorithms can achieve high bandwidth fairness and system throughput while reducing scheduling delay over wireless networks.

Published
2004-12-13
Publisher
IEEE
http://dx.doi.org/10.1109/QSHINE.2004.45
Copyright © 2004–2025 IEEE
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