Optimal Dynamic Spectrum Access Scheme for Utilizing White Space in LTE Systems

In this study, we design and implement an algorithm for optimal dynamic spectrum access (DSA) in a shared spectrum system where the primary user (PU) is a Long Term Evolution (LTE) system. The cumulative hazard function from survival analysis is used to predict the remaining idle time available in e...

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Bibliographic Details
Published inIEEE Wireless Communications and Networking Conference : [proceedings] : WCNC pp. 1 - 8
Main Authors Sahoo, Anirudha, Hall, Timothy A., Hagwood, Charles
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2019
Subjects
Hazards
Heuristic algorithms
Interference
Long Term Evolution
NIST
Prediction algorithms
Resource management
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Summary:In this study, we design and implement an algorithm for optimal dynamic spectrum access (DSA) in a shared spectrum system where the primary user (PU) is a Long Term Evolution (LTE) system. The cumulative hazard function from survival analysis is used to predict the remaining idle time available in each channel for secondary user (SU) transmission subject to a probability of successful completion. Optimal allocation of physical resource blocks (PRBs) for the SU is shown to be a variation of the unbounded knapsack problem. We evaluate the algorithm performance using three data sets collected from real LTE systems. The algorithms achieve good white space utilization and have a measured probability of interference around the target threshold.
ISSN:1558-2612
DOI:10.1109/WCNC.2019.8885894