Research Article
Cognitive Radio Using Multi-transmission Links: A novel approach effective in metropolitan areas
@INPROCEEDINGS{10.1109/CROWNCOM.2007.4549813, author={Kazunori TAKEUCHI and Tadayuki FUKUHARA and Shingo NOMURA and Shu YAMAMOTO}, title={Cognitive Radio Using Multi-transmission Links: A novel approach effective in metropolitan areas}, proceedings={2nd International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications}, publisher={IEEE}, proceedings_a={CROWNCOM}, year={2008}, month={6}, keywords={Cognitive radio multi-transmission radio resouce recognition white space}, doi={10.1109/CROWNCOM.2007.4549813} }- Kazunori TAKEUCHI
Tadayuki FUKUHARA
Shingo NOMURA
Shu YAMAMOTO
Year: 2008
Cognitive Radio Using Multi-transmission Links: A novel approach effective in metropolitan areas
CROWNCOM
IEEE
DOI: 10.1109/CROWNCOM.2007.4549813
Abstract
Although the definition of cognitive radio is still being discussed by IEEE P1900 and other organizations, the objective of cognitive radio addresses improvements in frequency utilization, flexible selection of optimal frequency bands, wireless channel bandwidth, modulation schemes, and access methods. In metropolitan areas, a huge number of wireless stations consume a variety of frequency bands. In such a radio environment, it is difficult to continuously utilize DSA (Dynamic Spectrum Access) because of the lack of vacant areas for secondary usage. Although if a wireless station feeds its transmission data to the wireless system with the largest margin of capability packet-by-packet, it effectively utilizes the “white space” and improves the performance of all wireless connections. The cognitive radio system proposed in this paper has the advantage of implementing existing wireless technologies within the current wireless regulations. This paper introduces cognitive radio using multi-transmission methods and its implementation. The estimated method of defining the margin of the wireless system second-by-second also addresses the universal index for various wireless systems.