Ricean K-Factor in Office Cubicle Environment

1. November 2003 Ricean K-Factor in Office Cubicle Environment David Cheung david.b.cheung@intel.com Cliff Prettie clifford.w.prettie@intel.com Qinghua Li qinghua.li@intel.com Jeng Lung jengx.c.lung@intel.com Intel Corporation David Cheung, Intel

2. 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

3. Measurement Locations David Cheung, Intel

4. K-Factors for Various Locations David Cheung, Intel

5. 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

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