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Measured Rician K-factor in a 5GHz band. Naoki Kita, Yasuhiko Inoue, Shuji Kubota NTT nkita@ansl.ntt.co.jp yinoue@ansl.ntt.co.jp kubota@ansl.ntt.co.jp. Overview. We derived Rician K-factor by: measuring the radio wave in some environments, apartment corridor office meeting room
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Measured Rician K-factor in a 5GHz band Naoki Kita, Yasuhiko Inoue, Shuji Kubota NTT nkita@ansl.ntt.co.jp yinoue@ansl.ntt.co.jp kubota@ansl.ntt.co.jp N.Kita, Y.Inoue and S.Kubota, NTT
Overview We derived Rician K-factor by: • measuring the radio wave in some environments, • apartment • corridor • office • meeting room • processing the output of the sliding correlator, • comparing with the cumulative distribution of the first delay wave component with the theoretical Rician distribution. N.Kita, Y.Inoue and S.Kubota, NTT
Measurement Apparatus Sliding correlator Tx / Rx Antennas N.Kita, Y.Inoue and S.Kubota, NTT
Example of Measured Delay Snapshots & Data Treatment Example of acquired delay snapshots ・・・ ・・・ Relative level [dB] Relative delay time [nsec] Picked Out Example Relative level [dB] Cumulative Probability K⋍ 10 dB Relative distance between BS and MS [m] Relative level [dB] N.Kita, Y.Inoue and S.Kubota, NTT
Measurement Scenarios N.Kita, Y.Inoue and S.Kubota, NTT
Apartment Ent- rance room#1 • LOS: in the same room • NLOS: the neighboring room STA room#2 NLOS 8.4 m AP LOS kitchen & dinning room STA room#3 room#4 8.4 m N.Kita, Y.Inoue and S.Kubota, NTT
Measured Rician K-factor in the “Apartment” scenario Apartment LOS NLOS Cumulative Probability (%) Cumulative Probability (%) Relative level [dB] Relative level [dB] N.Kita, Y.Inoue and S.Kubota, NTT
Corridor NLOS conditions Rx 36 m 34 m 52 m LOS conditions Tx Rx 69 m 131 m N.Kita, Y.Inoue and S.Kubota, NTT
Measured Rician K-factor in the “Corridor” scenario (1) Corridor(LOS) Near (50m-90m) Far (90m-120m) Cumulative Probability (%) Cumulative Probability (%) Relative level [dB] Relative level [dB] N.Kita, Y.Inoue and S.Kubota, NTT
Measured Rician K-factor in the “Corridor” scenario (2) Corridor(NLOS) Cumulative Probability (%) Relative level [dB] N.Kita, Y.Inoue and S.Kubota, NTT
Measured Rician K-factor in the “Office” scenario Office LOS(15m-27m) NLOS Cumulative Probability (%) Cumulative Probability (%) Relative level [dB] Relative level [dB] N.Kita, Y.Inoue and S.Kubota, NTT
Measured Rician K-factor in the “Meeting Room” scenario Meeting Room LOS Cumulative Probability (%) Relative level [dB] N.Kita, Y.Inoue and S.Kubota, NTT
Summary of Measured Rician K-factor • Conclusion • Rician K-factor values for LOS conditions: 7 – 10 [dB] • Rician K-factor values for NLOS conditions are similar to those of LOS conditions. • More measurements will be necessary to derive a typical value. N.Kita, Y.Inoue and S.Kubota, NTT
Environment Corridor (LOS) Apartment (room#2) Meeting room Office N.Kita, Y.Inoue and S.Kubota, NTT
Thank you very much! N.Kita, Y.Inoue and S.Kubota, NTT