Optimal Quantisation Bit Budget for a Spectrum Sensing Scheme in Bandwidth-Constrained Cognitive Sensor Networks
The problem of spectrum sensing in bandwidth-constrained cognitive sensor networks with quantised sensing observation is studied. In particular, the quantisation bit budget for achieving performance close to that of spectrum sensing with raw sensing observation is investigated. Both single-user spectrum sensing and collaborative spectrum sensing schemes are proposed. In single-user spectrum sensing, a sensor quantises its sensing observation and sends the quantised sensing observation to a processing point. The processing point performs spectrum sensing based on the reconstructed sensing observation.