Paper Info
Title
Dynamic Spectrum Allocation Based on Interference Threshold Modeling
Abstract
Dynamic transmission power based dynamic spectrum allocation (DSA) schemes are extensively adopted in cognitive ratio (CR) networks due to their flexible spectrum access strategies to improve spectrum utility. However such DSAs suffer from high sensitivity to the environment change. Based on the protocol model of wireless communications, a notion of interference threshold (IT) is introduced into the DSA model such that the intricate interactions among CRs can be decoupled and CRs' adaptations only affect the local area. With IT modeling, CRs' strategy profile number turns into finite such that an exhaustive search based IT DSA (ES-IT DSA) scheme is feasible to enumerate all strategy profiles for finding the optimal one. To address the scalability issue in ES-IT-DSA, a suboptimal RGF-IT DSA is developed in virtue of restricted growth function theory. Simulation results concur that the IT based DSA algorithms can keep high spectrum utility while achieving simplicity.
Year
DOI
Venue
2010
10.1109/GLOCOM.2010.5683573
GLOBECOM
Keywords
Field
DocType
dynamic transmission power,cognitive radio,wireless communication,radio spectrum management,interference threshold modeling,dynamic spectrum allocation,cognitive ratio network,flexible spectrum access strategy,interference,threshold model,spectrum,exhaustive search,dynamic scheduling,transmitters,sensitivity,protocols
Growth function,Wireless,Brute-force search,Computer science,Computer network,Interference (wave propagation),Frequency allocation,Dynamic priority scheduling,Scalability,Cognitive radio
Conference
ISSN
ISBN
Citations 
1930-529X E-ISBN : 978-1-4244-5637-6
978-1-4244-5637-6
1
PageRank 
References 
Authors
0.36
9
2
Name
Order
Citations
PageRank
Chao Zou1444.60
Chunxiao Chigan219520.62