Abstract: Spectrum sensing with multiple receive antennas is addressed in the cognitive radio network under impulsive noise environments. Based on order statistics, we propose a non-linear combining ...

Abstract: A traveling-wave circular loop antenna with its phase distribution along the circle of $\bm{l}\bm{\varphi}$ is demonstrated to generate the twisted radio wave. Theoretical formulations of ...

“They say, ‘when all else fails, amateur radio works,’ and ham radio operators are essential for community resilience throughout Hawaiʻi Island,” Mayor Kimo Alameda said. “The start of ...