An Adaptive Waveform Generation Technique for Cognitive Radio

One of the major issues in cognitive radio is obtaining an adaptive transmitting waveform based on environmental measurements. An efficient Radio frequency (RF) carrier waveform generation based on approximate prolate spheroidal wave function and bandpass filters is proposed in this paper. Bandpass filters are designed using interpolation and masking technique which gives a sharp cut off at lower order. The bit error performance of the waveform is evaluated. The proposed system will be useful in accessing TV spectrum and has good spectral utilization efficiency.