Description
Date depot: 1 janvier 1900
Titre: channel modeling for spectral sensing and cognitive radio networks
Directeur de thèse:
Alain SIBILLE (LTCI (EDMH))
Domaine scientifique: Sciences et technologies de l'information et de la communication
Thématique CNRS : Non defini
Resumé:
Cognitive radio is a new paradigm for wireless access and wireless networking. It has been the subject of intense research for about 2 decades, being promised to a bright future according to many researchers and engineers. Among the numerous issues involved, the degree of “intelligence” attributed in a centralized way to the network infrastructure and left to the terminal for contributing to the spectral resource assignment decision is not established. One of the key factors is the ability of the terminal and of the network to sense the spectrum use in order to be able to make educated decisions.
Within this context, the assessment of the sensing performance of either network or terminal is paramount to the specification of a cognitive radio system. At the signal processing level, algorithms must be designed in the most efficient way and this has motivated a strong research effort for several years. However the sensing performance will also depend in a critical way on the characteristics of the radio channel in both the frequency and the spatial domains, which impact the reliability of spectral occupation determination at a location that differs from the location of the sensing device.
Doctorant.e: Zeng Xin