Application of the spectrum sensing based on the Kolmogorov - Smirnov test to the OFDM resource allocation
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چکیده
This contribution deals with the resource allocation in orthogonal frequency division multiplex (OFDM) systems used in the context of cognitive radio. Two main components of the overall system are spectrum sensing using the Kolmogorov-Smirnov significance test and resource (bit) allocation exploiting the results from sensing. The spectrum sensing method performance is firstly evaluated for signals used in various current communication standards. According to the reliability of the signal detector, the selected bit allocation method (e.g. greedy method) is modified. For that reason, the test is run several times with various significance levels. Key–Words: OFDM optimization, cognitive radio, spectrum sensing
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تاریخ انتشار 2011