Abstract: [The contribution provides the statistical property of dynamic ban channel gain.]

Transcription

1 July 008 Project: IEEE P80.15 Working Group for Wireless Personal Area Networks (WPANs) Title: [Statistical Property of Dynamic BAN Channel Gain at 4.5GHz] Date Submitted: [July 13, 008] Source: [Minseok Kim 1, Jun-ichi Takada 1,, Lawrence Materum 1, Tomoshige Kan 1, Yuuki Terao 1, Yohei Konishi 1, Kenji Nakai 1, and Takahiro Aoyagi 1, ] Company [1: Tokyo Institute of Technology, : NICT] Address [S6-4, -1-1, O-okayama, Meguro-ku, Tokyo , JAPAN] Voice:[ ], FAX: [ ], [takada@ide.titech.ac.jp] Re: [Contribution to Channel modeling report] Abstract: [The contribution provides the statistical property of dynamic ban channel gain.] Purpose: [To provide information on body area network use cases, typical requirements, and to start the process on possibly starting a study group in on this topic.] Notice: This document has been prepared to assist the IEEE P It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P Slide 1

2 July 008 Measurement Overview Measurement of dynamic channel behavior RUSK-Fujitsu channel sounder 4.5GHz, 10MHz SISO measurement Posture / Motion : still, walking, stand up/seat down Estimate distribution parameters of random variable of path gain Fit distributions Slide

3 July 008 Measurement Setup RUSK-Fujitsu channel sounder 4.5GHz, BW=10MHz SISO measurement Antenna UWB SkyCross Antenna 6. x 18.5 x 1.0 mm 3.1 ~ 10 GHz Slide 3

4 July 008 b a Tx f e h d l Sensor Positions c g j i k Navel Point Distance from Tx [cm] a Right wrist 44 ~ 5.5 b Right upper arm 36 d Head 71 e Right ear 65 f Shoulder 31 g Chest 3 h Right rib 18.3 i Left waist 14 j Right thigh 34 k Right ankle 81.5 ~ 94 Same positions as NICT static channel measurements. Slide 4

5 July 008 Human specimen Sample #1 (sex: male) Height Bust Waist cm 89.5 cm 76.5 cm Slide 5

6 July 008 Walking Motions Stand up/ Seat down Slide 6

7 July 008 Measurement Campaign Anechoic Chamber, Tokyo Institute of Technology Measurement Campaign 1 Rx points => 10 Rx points except left ear and back About 10,000 snapshots (10 seconds) at every Rx and every posture 3 postures : still, walking, stand up/down Measured data Frequency domain channel response Visual data: both movie and still Slide 7

8 July 008 Anechoic Chamber Setup Rx Tx Slide 8

9 July 008 Distribution Functions Log-normal distribution f ln x 1 x, ) e (, ), x ( ) : location :scale Weibull distribution f x a b ba b x b 1 e b x a I 0 x a : scale b : shape Slide 9

10 CDF July 008 A: Right wrist (S1A) A:Right wrist h( 1 ) 10 - Weibull Log-normal still walking updn Slide 10

11 CDF July 008 B: Right Upper Arm (S1B) B:Right upper arm h( 1 ) 10 - Weibull Log-normal still walking updn Slide 11

12 CDF July 008 D: Head (S1D) D:Head h( 1 ) 10 - Weibull Log-normal still walking updn Slide 1

13 CDF July 008 E: Right Ear (S1E) E:Right ear h( 1 ) 10 - Weibull Log-normal still walking updn Slide 13

14 CDF July 008 F: Shoulder (S1F) F:Shoulder h( 1 ) 10 - Weibull Log-normal still walking updn Slide 14

15 CDF July 008 G: Chest (S1G) G:Chest h( 1 ) 10 - Weibull Log-normal still walking updn Slide 15

16 CDF July 008 H: Right Rib (S1H) H:Right rib h( 1 ) 10 - Weibull Log-normal still walking updn Slide 16

17 CDF July 008 I: Left waist (S1I) I:Left waist h( 1 ) 10 - Weibull Log-normal still walking updn Slide 17

18 CDF July 008 J: Right Thigh (S1J) J:Right thigh h( 1 ) 10 - Weibull Log-normal still walking updn Slide 18

19 CDF July 008 K: Right Ankle (S1K) K:Right ankle h( 1 ) 10 - Weibull Log-normal still walking updn Slide 19

20 CDF CDF July 008 Distribution Fitting (still) Log-normal(still) Weibull(still) 10 - A:Right wrist B:Right upper arm D:Head E:Right ear F:Shoulder G:Chest H:Right rib I:Left waist J:Right thigh K:Right ankle 10 - A:Right wrist B:Right upper arm D:Head E:Right ear F:Shoulder G:Chest H:Right rib I:Left waist J:Right thigh K:Right ankle Slide 0

21 CDF CDF July 008 Distribution Fitting (walking) Log-normal(walking) Weibull(walking) 10 - A:Right wrist B:Right upper arm D:Head E:Right ear F:Shoulder G:Chest H:Right rib I:Left waist J:Right thigh K:Right ankle 10 - A:Right wrist B:Right upper arm D:Head E:Right ear F:Shoulder G:Chest H:Right rib I:Left waist J:Right thigh K:Right ankle Slide 1

22 CDF CDF July 008 Distribution Fitting (updn) Log-normal(updn) Weibull(updn) 10 - A:Right wrist B:Right upper arm D:Head E:Right ear F:Shoulder G:Chest H:Right rib I:Left waist J:Right thigh K:Right ankle 10 - A:Right wrist B:Right upper arm D:Head E:Right ear F:Shoulder G:Chest H:Right rib I:Left waist J:Right thigh K:Right ankle Slide

23 July 008 Summary of Distribution Fitting (1) A B D E F / (-LogL) Right wrist Right upper arm Head Right ear Shoulder Log-normal fitting Still walking updn / ( ) / ( ) / (-1476) / ( ) / (-19806) /.7108 (14948) / (18735) / (983.8) / ( ) / (507.8) / (31047) / (31093) / 1.9 (7601) / (8384.1) / (14537) The value of each position is computed with the normalized h( ) 1 by mean value of still data Slide 3

24 July 008 Summary of Distribution Fitting () G H I J K / (-LogL) Chest Right rib Left waist Right thigh Right ankle Log-normal fitting Still walking updn / 0.38 (315) / ( ) / (-1794 ) / (-9717 ) / (-1151 ) / (16779) / 0.3 (818.79) / 0.50 ( ) / (970.7) / (14861) / (9907) / (4051) / (3337.8) / (11098) / (1357) The value of each position is computed with the normalized h( ) 1 by mean value of still data Slide 4

25 July 008 Summary of Distribution Fitting (3) A B D E F a / b (-LogL) Right wrist Right upper arm Head Right ear Shoulder Weibull fitting Still walking updn / ( ) / (-459.3) / (-1309) / ( ) / (-18940) / (1469) /.035 (1865) / (3061.7) / (-840.1) /.6536 (1913.3) / (9786) / (9631) / 0.88 (8458.3) 0.84 / (7959.7) / 1.03 (1445) The value of each position is computed with the normalized h( ) 1 by mean value of still data Slide 5

26 July 008 Summary of Distribution Fitting (4) G H I J K a / b (-LogL) Chest Right rib Left waist Right thigh Right ankle Weibull fitting Still walking updn /.9913 (3487.) / (-1979.) / (-17946) / (-7951.) / ( ) / (16909) / (1357. ) / ( ) / (3867.9) / 1.67 (1333) / (9393) / (3654) / (183.7) 1.66 / (9539.3) / (114) The value of each position is computed with the normalized h( ) 1 by mean value of still data Slide 6

27 July 008 Best Fit Distributions Still walking updn A Right wrist Normal Weibull Weibull B Right upper arm Log-normal Weibull Weibull D Head Normal Log-normal Log-normal E Right ear Normal Log-normal Weibull F Shoulder Log-normal Weibull Weibull G Chest Log-normal Log-normal Weibull H Right rib Log-normal Log-normal Weibull I Left waist Normal Log-normal Weibull J Right thigh Log-normal Log-normal Weibull K Right ankle Log-normal Weibull Weibull Slide 7

28 July 008 Summary Normal / Log-normal distribution can express well the still conditions Log-normal distribution shows good match in cases of small movements walking : D, E, G, H, I and J updn: D Weibull distribution shows the best fit in cases of large movements walking : A, B, F and K updn: A,B,E,F,G,H,I,J and K Slide 8