Research on human blockage effect for indoor 26 GHz mm-wave communications |
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Authors: | Sui-yan GENG Xing LI Qi WANG Guang-bo WANG Meng-jun WANG Shao-hui SUN Wei HONG Xiong-wen ZHAO |
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Affiliation: | 1. School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China;2. State Key Laboratory of Wireless Mobile Communications, China Academy of Telecommunications Technology (CATT), Beijing 100191, China;3. State Key Laboratory of Millimeter Wave, Southeast University, Nanjing 210096, China |
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Abstract: | Based on 26 GHz indoor channel measurements, the blockage attenuation of human bodies was investigated. 2-ray and 4-ray human blockage models were proposed by calculation of the Vogler's multiple knife-edge diffraction field. Results show that 4-ray model fits quite well with measurement data. Human block attenuations are slightly bigger with 1 GHz than with 500 MHz bandwidth. In the blockage measurement of one person moving along the connec-tion line between the transmitter (TX) and receiver (RX), the smallest attenuation is found when the person is located at the middle of the connection line, and the biggest attenuation is observed when the person is nearest from the RX position. In the blockage measurements by multiple human bodies, the attenuation is bigger in the cases which the persons cross the TX-RX connection line with their front faces directed to the horn aperture at the RX than the cases with their lat-eral faces directed to the RX horn aperture. The blockage attenuation is larger with the increase of person numbers, about 5~8 dB more attenuation per person. The results can be used for design of mm-wave 26 GHz indoor communi-cations systems. |
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Keywords: | mm-wave 26 GHz person blockage effect Vogler diffraction model 2-ray and 4-ray multiple person block-ing model |
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