doc.: IEEE wng0_LC-FMUWB Submission Jacksonville, FL May 2006 J. Farserotu, CSEM, CHSlide 1 Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Low Complexity FM-UWB for Short Range LDR Devices Date Submitted: May, 2006 Source: John Farserotu, CSEM, Switzerland Voice: , Re: [N/A] Abstract: This document presents low complexity FM-UWB for BAN/PAN optimised LDR devices. 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

doc.: IEEE wng0_LC-FMUWB Submission Jacksonville, FL May 2006 J. Farserotu, CSEM, CHSlide 2 LOW COMPLEXITY FM-UWB FOR SHORT RANGE LDR DEVICES J. Farserotu and J. CSEM, Switzerland

doc.: IEEE wng0_LC-FMUWB Submission Jacksonville, FL May 2006 J. Farserotu, CSEM, CHSlide 3 PN User A Personal Network (PN) is a new paradigm extending the concept of a Personal Area Network (PAN), to allow users secure access to all their personal devices and services regardless of geographical location PN devices can be separated by hundreds of kilometers, and still belong to the same PN PNs encompass all connection technologies, short and medium range radio, infrastructure wireless networks or any future broadband wireless technology MAGNET BEYOND AND PNs Private PAN PNs represent a potential mass market for short range wireless personal sensor devices

doc.: IEEE wng0_LC-FMUWB Submission Jacksonville, FL May 2006 J. Farserotu, CSEM, CHSlide 4 MAGNET BEYOND STANDARDISATION TASK FORCE MAGNET Beyond partners –34 partners from around the world. Experts on PNs. MAGNET Standardisation Task Force (MSTF) –Promotion of the results of MAGNET for standardisation towards the realisation of the mass market potential of PNs. FM-UWB –An important result of the project and a focus of the MSTF activities and the MSTF seeks a standard for LDR FM-UWB MSTF members supporting FM-UWB standardisation –Nokia, Philips, CEA-LETI, CSEM,…

doc.: IEEE wng0_LC-FMUWB Submission Jacksonville, FL May 2006 J. Farserotu, CSEM, CHSlide 5 WHY A STANDARD? The need –A mass market standard for future UWB LDR devices The opportunity and market relevance –Multitude of simple, short range, LDR devices The benefits –Commercial and practical What is in it for us? –Unlocking the potential of FM-UWB and realisation of PN optimised solutions

doc.: IEEE wng0_LC-FMUWB Submission Jacksonville, FL May 2006 J. Farserotu, CSEM, CHSlide 6 SHORT RANGE, LDR WIRELESS DEVICES IN THE NOMADIC P-PAN or BAN LDR optimised solutions Short range communication Low power consumption Robust and reliable Low cost devices Nomadic, go anywhere Good coexistence Small form factor Precise localisation not required Unrestricted in geographic span! P-PAN Cellular, WLAN,…

doc.: IEEE wng0_LC-FMUWB Submission Jacksonville, FL May 2006 J. Farserotu, CSEM, CHSlide 7 LOW COMPLEXITY FM-UWB TRANSCEIVER fsub = 1 MHz  fsub = 100 kHz  = kbps data f RF = 4000 MHz  f RF = 600 MHz   = 600 P RF = 100  W Encode/ Scramble Subcarrier Modulator Subcarrier Generator RF Oscillator FM-UWB Tx Simple FM transmitter Pre-amp Wideband FM demod Subcarrier filter & demod1 Subcarrier filter & demod2 Subcarrier filter & demodn Decode/ scramble1 Decode/ scramble2 Decode/ scramblen d 1 (t) d 2 (t) d n (t) FM-UWB Rx Simple scalable receiver GHz or GHz 1-2 MHz No receive LO, no carrier sync

doc.: IEEE wng0_LC-FMUWB Submission Jacksonville, FL May 2006 J. Farserotu, CSEM, CHSlide 8 FM-UWB FOR SHORT RANGE, LDR DEVICES True low complexity UWB system –Relaxed HW specs (e.g.  noise) –No LO, no carrier snync –Antennas not critical Low power consumption –Est. 3.5 mW (Tx), 7.5 mW (Rx) –FDMA-like access possible Robustness –Interference and multipath –Analogue spread spectrum Coexistence and mobility –Steep spectral roll-off –Fast acquisition Full working prototype First true low complexity UWB system… IC building blocks now in development Any system can be LDR, but that does not make it low complexity, low power, low cost!

doc.: IEEE wng0_LC-FMUWB Submission Jacksonville, FL May 2006 J. Farserotu, CSEM, CHSlide 9 EXAMPLE NOMADIC PAN LDR DIABETES SCENARIO 1. Nominally, a few bytes per control message, 1 message per minute 2. When transmitting. In this example, operation 1 min out of every 10 is considered, on average. P-PAN Sensor transmit data P-PAN Sensor receive control 1 Coordinator

doc.: IEEE wng0_LC-FMUWB Submission Jacksonville, FL May 2006 J. Farserotu, CSEM, CHSlide 10 RELATIVE POWER CONSUMPTION FOR SENSOR TRANSMISSION IN THE PAN Notes: 1. Based on the MAGNET diabetes scenario, Tx communications only Threshold for energy scavenging

doc.: IEEE wng0_LC-FMUWB Submission Jacksonville, FL May 2006 J. Farserotu, CSEM, CHSlide 11 FIRST STEPS AND KEY ISSUES Standard: The MSTF seeks to establish an IEEE work item with the aim of developing a standard (or amendment) for short range, low complexity, LDR FM-UWB devices. Regulatory: Interference, co-existence and the ECC decision –Low frequency band (4.2 GHz – 4.8 GHz) Pulse Repetition Frequency (PRF) Low Duty Cycle (LDC) Detect And Avoid (DAA) June –High frequency band (7.25 GHz – 8.5 GHz) PRF

doc.: IEEE wng0_LC-FMUWB Submission Jacksonville, FL May 2006 J. Farserotu, CSEM, CHSlide 12 EXAMPLE IR-UWB SPECTRUM Proposed CEPT mask Triangular pulse envelope t = 11 ns -76 dBm/MHz at 4 GHz ≈ 35dB

doc.: IEEE wng0_LC-FMUWB Submission Jacksonville, FL May 2006 J. Farserotu, CSEM, CHSlide 13 FM-UWB SPECTRUM -121 dBm/MHz at 4 GHz Constant envelope modulation, extremely rapid spectral rolloff! Spectral rolloff more than 45 dB lower than IR-UWB in the 3-4 GHz band! ≈ 80 dB

doc.: IEEE wng0_LC-FMUWB Submission Jacksonville, FL May 2006 J. Farserotu, CSEM, CHSlide 14 CONCLUDING REMARKS FM-UWB offers a simple, low power, yet robust solution for short range, LDR devices. PAN optimised –Simple star network –Short range, LDR communication from the sensor to a master –Very low data rate control from the master to sensor device –Receive power limited transceiver Very rapid spectral rolloff results in ultra low interference to other systems and excellent co-existence! The MAGNET Beyond Standardisation Task Force seeks to launch an IEEE work item aimed at standardisation of FM-UWB for short range, LDR devices.

doc.: IEEE wng0_LC-FMUWB Submission Jacksonville, FL May 2006 J. Farserotu, CSEM, CHSlide 15 Thank you