Fig. 5From: Enhanced interpolation-based interference rejection combining for black-space cognitive radio in time-varying channelsPerformance of QPSK and 16QAM BS-CR systems for SIR = − 20 dB with covariance matrix interpolation for CR receiver mobilities of 0, 10 km/h, and 20 km/h. Silent gap length of 8 or 16 symbols and OFDM frame length of 17 symbolsBack to article page