Pulsar SDR

Altera Cyclone FPGA Code to implement a Software Defined Radio

Developed for Tayloe detector and DE0 Nano dev board Eventually will be migrated to a direct sampling design

TO DO

In something of a priority order.

Tests

• Receive

  • Save quadrature sampling data for post-processing with GNU Radio
  • Streaming receive over Ethernet

• Transmit

  • Block transmit with DAC direct out
  • Streaming transmit over Ethernet

Hardware

• Decide on and purchase new FPGA dev board
• Layout, manufacture and build LT2208 board
• Qualify noise performance of RX signal chain
• Qualify noise performance of DAC (does this need a spectrum analyzer?)
• Layout, manufacture and build TxDAC board
• Construct HF amplifier (10W with cheap power FETs ?)
• Package in some kind of nice case
• Do something hella cool (Summits on the Air?)
• Build down-converter
• Do additional hella cool things (moon bounce?)

FPGA/HDL

• Learn how to work with FIFOs
• Create PHY interface compatible with UHD
• ADC interface (LT2208)
• Down sampling filters
• Glue logic and control circuits

Software/GNU Radio

• Experiment with demodulating simple voice/data modes (AM, SSB, RTTY, PSK)
• Determine if GNU radio based system or SDR#/HDSDR/linrad
• Learn how to use UHD driver