Technical Approach
SENDORA is divided into 8 Work Packages (WP). WP1 is dedicated to management activities. WP2 details the targeted scenarios, thus providing requirements for the other WP. The enabling techniques are then addressed in WP3-WP6. As the project considers the Sensor Network aided Cognitive Radio as an integrated system, strong interactions between these WPs have been identified.
WP3 is dedicated to spectrum sensing, that is, the design of new robust spectrum sensing algorithms, whose detection power will be enhanced by processing data from several sources in order to perform distributed detection of the primary licensed users.
WP4 addresses the cognitive actuation. The objective is to achieve an improved understanding of the cognitive radio control actuation loop that will become a key module of the radio terminal.
WP5 is dedicated to the collaborative communications within the sensor network. Novel physical layer cooperative transmission techniques will be designed, by modifying various approaches like Virtual Beamforming, Amplify & Forward, Decode & Forward, Compress & Forward.
WP6 is dedicated to the design of the end-to-end protocol stack of the sensor network, to allow data gathering and spectrum monitoring. The design and evaluation of a complete, cross-layer optimised protocol stack for end-to-end query dissemination and data gathering in the wireless sensor network will be addressed.
WP7 will address the integration of these enabling techniques and the demonstration of the concept in a realistic environment. A radio demonstrator will be developed, based on two hardware platforms: one platform dedicated to digital signal processing, and one RF platform with frequency agility. The foreseen demonstration will use a WiFi primary network as test-bed environment. The traffic will be analyzed and the degradations caused by the cognitive network will be measured. The improvements in the spectrum use will be also monitored.
WP8 is dedicated to dissemination activities.
----------------------------------------------------------------
<< Main Objectives || Overview || Key Issues >>
