Optimum model-based non-real-time downlink data transmission in heterogeneous, DS-CDMA cellular networks

Navaie, Keivan and Valaee, Shahrokh and Sharafat, Ahmad R. and Sousa, Elvino S. (2007) Optimum model-based non-real-time downlink data transmission in heterogeneous, DS-CDMA cellular networks. IEEE Transactions on Wireless Communications, 6 (6). pp. 2357-2367. ISSN 1536-1276

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Abstract

Motivated by the results in [ 1] on the self-similarity of the downlink interference in heterogenous service DS-CDMA' networks, in this paper, we propose a model-based linear adaptive-predictive method to estimate the level of interference for optimizing the system throughput and minimizing the delay for non-real-time data transmission. We use a fractional Gaussian noise (fGn) model in an appropriate time-scale to represent the self-similarity in the downlink interference. The estimated interference is utilized to allocate the available power to non-real-time services. In doing so, we use a utility-based optimization scheme and dynamic programming for time-domain optimal scheduling of non-real-time traffic. Simulation results validate the fGn model and show a substantial improvement in the delay fairness and a significant increase in the average cell throughput using our proposed scheme; and confirm that the interference model is valid for a broad range of arrival rates of non-real time traffic.

Item Type:
Journal Article
Journal or Publication Title:
IEEE Transactions on Wireless Communications
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2208
Subjects:
ID Code:
72613
Deposited By:
Deposited On:
27 Jan 2015 08:22
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 09:07