Ricean K-Factor in Office Cubicle Environment November 2003 Ricean K-Factor in Office Cubicle Environment David Cheung, Cliff Prettie, Qinghua Li, Jeng Lung Intel Corporation November 2003 David Cheung, Intel

Measurement Setup and Analysis Office cubicle environment 7 different STA locations, 3-19m distance, 2 in hard-wall conference room 11 different sets of data Each set contains 1369 different antenna positions, 37x37 array with ½” spacing Channel transfer function spans 2-8 GHz K-factor based on strongest average tap in 100 MHz (5.15-5.25 GHz and 5.25-5.35 GHz) using moment-method estimation [1] David Cheung, Intel

K-Factors for Various Locations Set # Perspective STA Location Distance (m) LOS/ NLOS K factor (dB) 1 AP S1 3 LOS -3.56 STA -6.24 2 S2 19 -∞ S4 11 -3.86 4 S5 13 5 S12 -4.18 6 S13 12 -1.11 STA, conf. 7 S20 8.5 -2.23 -5.71 David Cheung, Intel

Measurement Locations David Cheung, Intel

Conclusions Ricean K-factor is small (< -1 dB) in office cubicle environment Small K-factor attributed to large number of scatterers and 10 ns time resolution Many paths have excess delay of <10 ns These paths combine in first tap David Cheung, Intel

References [1] Greenstein, Michelson, and Erceg, “Moment-Method Estimation of the Ricean K-Factor,” IEEE Communications Letters, Vol. 3, No. 6, June 1999, pp. 175-176. David Cheung, Intel