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Spectrum-Sharing Transmission Capacity

Title
Spectrum-Sharing Transmission Capacity
Authors
Lee, JeminAndrews, Jeffrey G.Hong, Daesik
DGIST Authors
Lee, Jemin; Andrews, Jeffrey G.; Hong, Daesik
Issue Date
2011-09
Citation
IEEE Transactions on Wireless Communications, 10(9), 3053-3063
Type
Article
Keywords
Spectrum sharingstochastic geometrytransmission capacitycognitive radiounlicensed spectrumspatial networksAD-HOC NETWORKSWIRELESS NETWORKSSPATIAL DIVERSITYCOEXISTENCEINTERFERENCEENVIRONMENTSCONSTRAINTSSYSTEMSACCESS
Author Keywords
Spectrum sharingstochastic geometrytransmission capacitycognitive radiounlicensed spectrumspatial networks
Keywords
AD-HOC NETWORKSWIRELESS NETWORKSSPATIAL DIVERSITYCOEXISTENCEINTERFERENCEENVIRONMENTSCONSTRAINTSSYSTEMSACCESS
ISSN
1536-1276
Abstract
This paper analyzes spectrum sharing between multiple systems. The efficiency of spectrum sharing is determined primarily by interference, which is a function of the spatial densities of the transmitters in systems dependent on the chosen spectrum sharing method. One method is underlay, which allows all systems to concurrently use the whole spectrum, and the other is overlay, in which a system only utilizes its own assigned spectrum. We define the spectrum-sharing transmission capacity (S-TC) as the number of successful transmissions per unit area subject to outage probability constraints for each system. To prevent some systems from monopolizing access to the spectrum, we also propose a fair coexistence constraint and derive the optimal spatial densities and relative transmission powers both with and without this constraint in terms of the sum S-TC. Through analytical results, the overlay and underlay methods are compared, verifying that the overlay method is generally preferred, and the underlay method is equally good only for optimal transmission power ratios under a fair coexistence constraint. © 2006 IEEE.
URI
http://hdl.handle.net/20.500.11750/13415
DOI
10.1109/TWC.2011.070511.101941
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Files:
There are no files associated with this item.
Collection:
Department of Electrical Engineering and Computer ScienceISC(Information Security and Communication) Lab1. Journal Articles


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