Sub- Nyquist Reconstruction Final Presentation Winter 2010/2011

1. Technion Israel Institute of Technology Sub-NyquistReconstructionFinal PresentationWinter 2010/2011 By: YousefBadran Supervisors: AsafElron Ina Rivkin

2. Abstract • The project is part of the Sub-NyquistXampling project and a sub-module of the Reconstruction block. This project takes the frequency slices and detects the transmission bands in them highlighting the beginning and end of each band. It then filters the noises around these bands in order to get a clearer picture.

3. Project Overview • Part of the Modulated Wideband Converter project cluster. • A system for sub-Nyquist sampling of multiband signals. • Sub-module of the reconstruction block. • Implemented on a single NI FlexRio Virtex-5 SX95T FPGA device. • NI LabVIEW interface

4. Testing Environment Host.vi

5. Host.vi (Write) Display Input Signal Host to FPGA FIFO(WRITE) 2048 elements Generate Sequence 1 MHz rate Parse data (64bit double to U32) Join numbers (U64bit) Real data MUX Img data 1024 Samples data Complex data Select

6. Host.vi (Read) Display Output Signal FPGA to Host FIFO (READ) 2048 elements Write to file 1024 Samples (U64 bit) DBL 1024 Samples (double) WELCH Display and compare results

7. FPGA Host to FPGA FIFO(READ) 2048 elements FPGA FIFO 1024 elements FPGA to Host FIFO(WRITE) 2048 elements FPGA FIFO 1024 elements Spectrum Quantization Real Split numbers (I32) FXP FXP Welch Power Spectral Estimation Img.

8. Welch PSD – Block Diagram Memory Read Addr. Write Addr. Counter Data out Data out Data in en Hamming Window Complex FFT Real data in Real data Real data Img. data in Img. data Img. data Out valid Shift reg

9. Quantization – Block Diagram