1. <doc.: IEEE 802.15-doc>
<month year>
<doc.: IEEE doc>
November 2012
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [ Proof of concept for transmission range]
Date Submitted: [ ]
Source: [Marco Hernandez, Huan-Bang Li, Igor Dotlić, Ryu Miura ]
Company: [NICT]
Address: [3-4 Hikarino-oka, Yokosuka, , Japan]
Voice:[ ] Fax: [ ] []
Re: [In response to call for technical guidance document contributions TG8]
Abstract: [ ]
Purpose: [Material for discussion in TG]
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
Hernandez,Li,Dotlić (NICT)
<author>, <company>

2. November 2012
Path Loss Estimate
Maximum transmit power at the input antenna: Pt=250 mW.
Antenna gains are assumed as Gt = Gr = 0 dBi.
The fade margin: Fm = 6 dB.
Receiver’s implementation losses: Il = 3 dB.
Receiver’s noise figure: NF = 6 dB.
Through simulations a candidate system: Eb/N0 = 8 dB for BER= 10-3.
Data rate: 1 Mbps, 250 kbps.
Hernandez,Li,Dotlić (NICT)

3. Path Loss Estimate The maximum allowed path losses are:
November 2012
Path Loss Estimate
The maximum allowed path losses are:
L1 = dB for 1 Mbps and L2 = dB for 250 kbps
Hernandez,Li,Dotlić (NICT)

4. Path Loss Estimate Free path loss (in Matlab format):
November 2012
Path Loss Estimate
Free path loss (in Matlab format):
PL = 20*log10(4*pi*fc*d/3e8);
Fc=2.4 GHz, D=100m, PL= dB
Fc=2.4 GHz, D=200m, PL= dB
Fc=2.4 GHz, D=500m, PL= dB
Fc=5.1 GHz, D=100m, PL= dB
Fc=5.1 GHz, D=200m, PL= dB
Fc=5.1 GHz, D=500m, PL= dB
Hernandez,Li,Dotlić (NICT)

5. Path Loss Estimate ITU outdoor path loss model lamda=3e8/fc;
November 2012
Path Loss Estimate
ITU outdoor path loss model
lamda=3e8/fc;
Lbp=abs(20*log10((lamda^2)/(8*pi*hb*hm)));
Rbp=(4*hb*hm)/(lamda);
if d<=Rbp
PL=Lbp+20*log10(d/Rbp);
else
PL=Lbp+40*log10(d/Rbp);
end
Hernandez,Li,Dotlić (NICT)

6. Path Loss Estimate ITU outdoor path loss model
November 2012
Path Loss Estimate
ITU outdoor path loss model
Fc=2.4 GHz, D=100m, PL= dB
Fc=2.4 GHz, D=200m, PL= dB
Fc=2.4 GHz, D=500m, PL= dB
Fc=5.1 GHz, D=100m, PL= dB
Fc=5.1 GHz, D=200m, PL= dB
Fc=5.1 GHz, D=500m, PL= dB
Hernandez,Li,Dotlić (NICT)

7. November 2012
Path Loss Estimate
For a distance of 500m, and Fc=2.4Ghz and 5.1 GHz, the computed path losses do not reach the maximum allowed path loss (L1 = dB for 1 Mbps and L2 = dB for 250 kbps)
that will degrade performance for this particular system.
This is a proof of concept that a transmission range of 500m is feasible for the 2.4 GHz band and 5.1 GHz bands.
Hernandez,Li,Dotlić (NICT)