1. © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. PROFIL project: Airbus D&S current status and FMT scheme overview - Current status - FMT scheme definition - FMT simulation based on 3GPP LTE one Laurent Martinod 07/10/2014

2. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Current status Deliverables: L0.1: finalized and shared with partners. Waiting for official Template to update the final version. L1.1: first draft available. Contribution from CEA to include. Review will follow. L2.1: Airbus DS contribution on FMT to include. FMT study current status: FMT pulse shaping choice and design: specifications issued from our own contribution to Emphatic project Tx/Rx modulator/demodulator parts implemented (C and Matlab) Complete SISO Tx/Rx chain with BER performances metrics based on existing LTE simulator: developed, validated and now fully available in order to be able to compare results using similar structures (LTE vs FMT) Dynamic propagation channel included (for both ideal and real channel estimation algorithms) – SISO case Replace LTE OFDM scheme by FMT one without changing existing 3GPP LTE physical channels: OK See next slides, … FMT study future steps: Add more complex antenna configuration cases (SIMO, MISO) Compare performances in different configurations… 07 October 2014 PROFIL project: Airbus Defence & Space current status and FMT scheme overview

3. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. 07 October 2014 BB system introduction into NB world Typical cases and generic one 3 PROFIL project: Airbus Defence & Space current status and FMT scheme overview

4. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. FMT characteristics: some maths FMT BB signal: –M is the number of sub-carriers, –N is the number of modulated symbols on each sub-carrier, –T is the symbol duration on each sub-carrier –g(t) is the ideal symbol waveform, obtained by the inverse Fourier transform of a square root raised cosine spectrum G(f), defined as follows: –Thus: 07 October 2014 PROFIL project: Airbus Defence & Space current status and FMT scheme overview

5. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. 3GPP LTE and FMT main parameters Classical 3GPP LTE figures, and new parameters: Goal: keep 3GPP LTE parameters unchanged ! FMT implementation is transparent for 3GPP upper layers. 07 October 2014 PROFIL project: Airbus Defence & Space current status and FMT scheme overview Configuration parameters3GPP LTE Standard + FMT Basic modulation access modeOFDMA (downlink mode) Frequency carrier450 MHz Bandwidth1.4 MHz FFT size (Nfft)128 Sampling Frequency1.92 MHz Sub-carrier spacing (∆f)15 kHz CP512/2048*NFFT=1/4 Symbol duration160 samples: Nfft+CP Number of used sub-carriers (N used )72 (6 RBs) Pulse shaping filter sizeL*(Nfft+CP)) Roll-off factorAlpha Tx / Rx

6. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. FMT advantage: spectrum behaviour example – carrier blanking As an example: one subcarrier is dismissed -Adjacent sub-carrier rejection = -49dB (FMT) vs -10dB (CP-OFDM) -Pulse shaping filter characteristics: L = 8, alpha = 0.35 07 October 2014 PROFIL project: Airbus Defence & Space current status and FMT scheme overview OFDM FMT Unused OFDM subcarrier Unused FMT subcarrier

7. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. FMT drawback: ICI / limited pulse shaping temporal support example – EVM at receiver side (no propagation channel) Depending on temporal pulse shaping length and truncation, EVM could be not negligible (ideal case – no propagation channel): 07 October 2014 PROFIL project: Airbus Defence & Space current status and FMT scheme overview

8. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. FMT: parameters choice (EVM and rejection criteria) EVM depending on roll-off factor (asymmetric roll-off factor: Rx / Tx pulse shaping filters) Filter length = 12 OFDM symbols (1 LTE sub-frame) Optimal point: (AlphaTx: 0.22, AlphaRx: 0.18) => Rejection: 48.7dB, EVM: 1.0% 07 October 2014 PROFIL project: Airbus Defence & Space current status and FMT scheme overview

9. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. FMT modulator - basics 07 October 2014 PROFIL project: Airbus Defence & Space current status and FMT scheme overview

10. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Our FMT implementation: overlap-add in the temporal domain 07 October 2014 PROFIL project: Airbus Defence & Space current status and FMT scheme overview IDFT + replication overlap-add with previous FMT symbols M.m bits bits/symbols mapping Msymbols demultiplexing on Msubcarriers 0 M.. IDFT + replication time Filter h (t) tx Filter h (t) tx time

11. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. MATLAB LTE / FMT PHY simulation: overall synoptic (DL case) Complete PHY layer simulation available: Synchronization in time and frequency is perfect ! 07 October 2014 PROFIL project: Airbus Defence & Space current status and FMT scheme overview Data bits CHANNEL CODING CRC encoder Rando- mizer FEC encoder Inter- leaver Rate mat- ching SYMBOL QAM mapper MIMO encoder BURST MAPPING PHY-channel mapping PN seq. generator Pilots insertion Frame structure OFDM IFFT CP insert. PROPAGATION CHANNEL Multiple paths Delays Uncorrelated fadings Multiple paths summation AWGN FFT CP remove OFDM INIT MIMO decoder & Channel estimation Channel compensate PHY-channel demapping Pilots removal QAM Demod. Received Data bits CRC decoder Derand- omizer FEC decoder Deinter- leaver Rate demat- ching BER/FER calculation + EVM FMT

12. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. MATLAB 3GPP LTE / FMT PHY simulation: 3GPP LTE DL physical channels overview (reused with FMT scheme) 07 October 2014 PROFIL project: Airbus Defence & Space current status and FMT scheme overview

13. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. FMT vs LTE simulation results – AWGN SISO 07 October 2014 PROFIL project: Airbus Defence & Space current status and FMT scheme overview

14. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. 07 October 2014 Thank you for your attention! Questions ? 14 PROFIL project: Airbus Defence & Space current status and FMT scheme overview