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Radio resource management for downlink multimedia services in TDMA/CDMA interference-limited cellular networks

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Abstract

This paper addresses the radio resource management (RRM) structure and efficient dynamic capacity allocation techniques for hybrid TDMA/ CDMA mobile cellular networks to support downlink multimedia services with different quality-of-service (QoS) requirements in an interference-limited environment. Various burst-driven timeslot-code assignment algorithms suitable for distributed processing are proposed to achieve high system capacity in terms of b/s/Hz/cell while maintaining a required percentage of satisfied users. Simulation results for various traffic scenarios are used for performance evaluation and comparison. The impacts of bursty WWW traffic on speech performance are also examined. It is shown that interference information can be used in timeslot-code assignment to significantly improve the system performance. Based on the received interference information, the minimum instantaneous power (MIP) algorithm aims to assign timeslot-codes that minimize the required transmitted power to maintain a target SINR. The MIP can provide an increase of 23% in system capacity. By considering to reduce both potentially received and generated interference in timeslot-code assignment, the Minimum Sum of Path-loss Ratios (MS-PLR) algorithm can further offer an additional capacity increase of 24%.

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Authors and Affiliations

  1. Faculty of IET, The German University in Cairo–GUC, Main Entrance Al Tagamoa Al Khames, New Cairo City, Egypt

    Tallal Elshabrawy

  2. Department of ECE, McGill University, 3480 University, Montral, QC, Canada, H3A 2A7

    Tho Le-Ngoc

Authors
  1. Tallal Elshabrawy
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  2. Tho Le-Ngoc
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Correspondence to Tho Le-Ngoc.

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Elshabrawy, T., Le-Ngoc, T. Radio resource management for downlink multimedia services in TDMA/CDMA interference-limited cellular networks. Wireless Pers Commun 43, 1523–1538 (2007). https://doi.org/10.1007/s11277-007-9324-x

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  • DOI: https://doi.org/10.1007/s11277-007-9324-x

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