A scalable dynamic spectrum allocation system with interference mitigation for teams of spectrally agile software defined radios
- 10 December 2005
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 3, 170-179
- https://doi.org/10.1109/dyspan.2005.1542632
Abstract
In future applications, next generation spectrally agile software defined radios (SASDR) will be equipped with advanced radio frequency (RF) sensors that will enable them to sense their environment and adaptively select the best and most stable portions of the spectrum to establish communications. This paper presents a robust method for estimating locally the unused or underutilized regions of RF spectrum to optimize dynamic spectrum usage. These adaptive algorithms are described and results of "open spectrum" estimation performed on real RF spectrum measurements illustrate the robust performance of the approach. Simulation results are shown along with results from real measurements that describe the RF resources in rural, suburban and urban areas in and around Philadelphia in the VHF and UHF bands. The measurements represent a good dynamic data set including motion and spatio-temporal diversity. The effect on reducing the risk of interference by collaborating across multiple nodes that provides increased robustness of sensing of open spectrum through spatial diversity is also discussed and quantitative values for the interference mitigation under collaborative behaviors are also presentedKeywords
This publication has 5 references indexed in Scilit:
- Implementation issues in spectrum sensing for cognitive radiosPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Spectrum pooling: an innovative strategy for the enhancement of spectrum efficiencyIEEE Communications Magazine, 2004
- Cognitive radio for flexible mobile multimedia communicationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Multiple emitter location and signal parameter estimationIEEE Transactions on Antennas and Propagation, 1986
- A Mathematical Theory of CommunicationBell System Technical Journal, 1948