Extracting the channel allocation information in a spectrum pooling system exploiting cyclostationarity

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Abstract
The spectrum pooling concept allows the license owner of a spectral band to share a sporadically used part of his licensed spectrum with a renter system, until he needs it himself. For the smooth operation of a spectrum pooling system, the license owner has to have absolute priority to access the shared spectrum. This means that the renter system has to monitor the channel and extract the channel allocation information (CAI), i.e. it has to detect which parts of the shared spectrum the owner system accesses in order to vacate immediately the frequency bands being required by the license owner and to gain access to the frequency bands which the license owner has stopped using. The paper proposes exploiting the cyclostationary properties of the spectrum owner signal for the extraction of the CAI in a specific spectrum pooling scenario, where the license owner is a GSM network and the spectrum renter is an OFDM based WLAN system.

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