On Designing MAC Protocols for Wireless Networks Using Directional Antennas
IEEE Transactions on Mobile Computing
In-building wideband partition loss measurements at 2.5 and 60 GHz
IEEE Transactions on Wireless Communications
Exploiting the 60 GHz band for local wireless multimedia access: prospects and future directions
IEEE Communications Magazine
IEEE Journal on Selected Areas in Communications
Modeling the statistical time and angle of arrival characteristics of an indoor multipath channel
IEEE Journal on Selected Areas in Communications
Spatial and temporal characteristics of 60-GHz indoor channels
IEEE Journal on Selected Areas in Communications
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This paper presents the results of an experimental investigation of 60 GHz Wireless Local Area Network (WLAN) systems in an office environment. The measurement setup with highly directional mechanically steerable antennas and 800 MHz bandwidth was developed and experiments were performed for conference room and cubicle environments. Measurement results demonstrate that the 60 GHz propagation channel is quasi-optical in nature and received signal power is obtained through Line Of Sight (LOS) and reflected signal paths of the first and second orders. The 60 GHz WLAN system prototype using steerable directional antennas with 18 dB gain was able to achieve about 30 dB baseband SNR for LOS transmission, about 15-20 dB for communications through the first-order reflected path, and 2-6 dB SNR when using second-order reflection for the office environments. The intra cluster statistical parameters of the propagation channel were evaluated and a statistical model for reflected clusters is proposed. Experimental results demonstrating strong polarization impact on the characteristics of the propagation channel are presented. Cross-polarization discrimination (XPD) of the propagation channel was estimated as approximately 20 dB for LOS transmission and 10-20 dB for NLOS reflected paths.