Chang C.-YHSI-TSENG CHOU2022-04-252022-04-252021https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123279585&doi=10.23919%2fISAP47258.2021.9614493&partnerID=40&md5=fc1adc602517bda1e38a60ce509fdc9chttps://scholars.lib.ntu.edu.tw/handle/123456789/607131This paper presents the investigations of indoor radio coverage by ray-tracing techniques. Multi-beam radiation patterns are employed in the numerical simulations. The signal-to-noise ratio (SNR) and signal-to-interference-plus-noise ratio (SINR) are employed as the parameter to justify the effectiveness of radio coverage. It is seen that the directional beams may provide higher gains, but may not provide a good coverage. A hybrid implementation of omnidirectional and directional radiations may provide a better coverage in terms of communication quality for UE system. ? 2021 Taiwan Microwave Association.Millimeter-wave frequencyphased array of antennasradio coveragewave propagationAntenna phased arraysDirectional patterns (antenna)Millimeter wavesOmnidirectional antennasRadio wavesSignal interferenceSignal to noise ratioHigh gainHybrid implementationIndoor RadioMillimeter wave frequenciesMultibeamsOmnidirectional radiationPhased array of antennaPhased-arraysRadio coverageRay-tracing techniqueWave propagationconference paper10.23919/ISAP47258.2021.96144932-s2.0-85123279585