1. 1 PIANO+ OTONES WP3 SIGNAL PROCESSING ALGORITHMS

2. MultiPhy Proprietary and Confidential WP3 – In General Schedule : M3 - M15 Objective: Responsible for the signal algorithms that will be implemented in the OLT and ONU electronics in WP4 and WP5 Description: Task 3.1: Development of the Signal Processing Algorithms for DS Transmission [M4-M15] Task 3.2: Development of the Signal Processing Algorithms for US Transmission [M4-M15] 2

3. MultiPhy Proprietary and Confidential Task 3.1 Development of the signal processing algorithms necessary to receive downstream (DS) polarization-multiplexed OFDM signals. This includes the receive downstream (DS) polarization multiplexed OFDM signals in the ONU receiver and the generation of the specified number and position of subcarriers, pilot tones and training symbols in the OLT transmitter. Fed by WP2, Feeds WP4 (T4.2), WP5 (T5.4) Contributing Partners – Finisar, UCL 3

4. MultiPhy Proprietary and Confidential Task 3.1 – ONU Rx Performing optical field reconstruction (self-coherent receiver, preferred option) Develop digital field reconstructor module including Frequency Domain Equalization (FDE), Develop algorithm which support reduced guard interval transmission scheme Demultiplexing of the polarization-multiplexed signal – develop a 2x2 polarization MIMO decoder to mitigate Polarization Mode Dispersion (PMD) and Polarization Dependent Loss (PDL) Developing OFDM pre-processing and synchronization Developing robust carrier recovery module for self coherent and coherent detection in-cluding decision feedback phase estimator Demultiplexing the OFDM signal with an FFT, based on DFT Performing frequency and phase reconstruction (coherent receiver, back up option) Demodulation of the transmitted data, including symbol to bit decoder module in order to decode a frequency slice of the DS signal and extract the data designated to a specific ONU 4

5. MultiPhy Proprietary and Confidential Task 3.1 – OLT Tx Implement a configurable digital baseband OFDM transmitter, multiplexing data to multi- ple ONUs, using the sliced 'PUDG' signal pattern. Design and implement the self-coherent transmitter part (differential encoder) Research, design and implement linear and non-linear pre-distortion scheme to mitigate various transmitter, channel and receiver linear and non-linear distortion effects. Design and implement all required training and ranging sequences Design and implement a DS data multiplexing, coding and framing schemes and possibly channel coding, taking into account polarization multiplexing 5

6. MultiPhy Proprietary and Confidential Task 3.2 Development of the signal processing algorithms necessary to transmit upstream (US) OFDM signals via the seed tone sent by the OLT in the ONU transmitter and receive Upstream (US) OFDM signals in the OLT receiver Fed by WP2, Feeds WP4 (T4.2), WP5 (T5.3) Contributing Partners – Finisar, UCL 6

7. MultiPhy Proprietary and Confidential Task 3.2 – ONU Tx Adapt OFDM transmitter, developed for the OLT Tx, to operate in the reflective technique, modulate the incoming DS signal and apply a frequency shift to transmit data from a single ONU. Integrate the self-coherent transmitter part (differential encoder), developed in OLT Tx Implement multiple ONU instance per broadcast group and multiple broadcast group, capable of receiving delay feedback information from OLT and adapting transmitted frame synchronization Design and implement a basic OFDM data-stream including prefix,training sequences and differential pre-coding Integrate linear and non-linear, time domain and frequency domain pre-distortion scheme to mitigate various transmitter, channel and receiver linear and non-linear distortion effects developed in OLT Tx Adapt and integrate all required training and ranging sequence, data multiplexing, coding and framing scheme, developed in OLT Tx for the US direction, including possibly channel coding Design Frequency domain, pre-emphasis and pre-distortion algorithms 7

8. MultiPhy Proprietary and Confidential Task 3.2 – OLT Rx Develop a ranging and delay estimation scheme for the signals arriving from different ONUs. The output of this estimation procedure may be fed back to the ONUs for delay synchronization. Integrate and adapt symbol to bit decoder, developed in the ONU Rx to perform symbol decoding, de-framing and de-multiplexing the aggregated bit-stream to user tributaries. Research and develop a module to compensate for PMD and PDL and to perform Maximum Ratio Combining (MRC) of the 2 polarization components (utilizing relevant schemes developed in ONU Rx for polarization demultiplexing) Integrate frequency Domain Equalization (FDE) prior to OFDM demodulation, developed in ONU Rx 8

9. MultiPhy Proprietary and Confidential Milestones and Deliverables Milestones: M15 Delivery of US signal processing algorithms for implementation in hardware M15 Delivery of DS signal processing algorithms for implementation in hardware Deliverables: D3.1 M08 OLT and ONU transmitters basic* implementation (Matlab code) D3.2 M10 OLT and ONU receivers basic* implementation (Matlab code) D3.3 M13 OLT and ONU transmitters advanced* implementation (Matlab code) D3.4 M15 OLT and ONU receivers advanced* implementation (Matlab code) D3.5 M15 Preparation of a final report describing simulated complete network performance with various channel conditions * basic implementation includes B2B scenarios while advanced implementation includes transmission channel scenario 9

10. THANK YOU! 10