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Spectrum Sharing by Adaptive Transmit Power Control for Low Priority Systems and Achievable Capacity
Hiromasa FUJII Hitoshi YOSHINO
Publication
IEICE TRANSACTIONS on Communications
Vol.E92-B
No.8
pp.2568-2576 Publication Date: 2009/08/01 Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.2568 Print ISSN: 0916-8516 Type of Manuscript: PAPER Category: Fundamental Theories for Communications Keyword: spectrum sharing, capacity, system priorities, transmit power control,
Full Text: PDF>>
Summary:
A spectrum sharing method is proposed for systems that share the same frequency band or adjacent bands with services that have different priorities. The proposed method adaptively controls transmission power according to information provided by the high-priority system receivers. We give the theoretical capacities achieved by low-priority systems when the proposed method and a conventional method (constant transmit power) are applied. Numerical results confirm that the proposed method attains 1.5-2 times larger capacity than the conventional method.
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