• Quadrature Signals: Complex, But Not Complicated
• I/Q Data for Dummies
• MIT OpenCourseWare: Signals and Systems (Spring 2011), Prof Alan V. Oppenheim
• Complete GPS/GLONASS Receiver Design
• Software Radio for Experimenters with GNU Radio, Octave and Python by Michel Barbeau
• Let's Assume the System Is Synchronized by Fredric J. Harris

• Presentati1. ons:
  • Multirate Digital Signal Processing by Fredric J. Harris
• Videos:
  • Basics of IQ Signals Part I
  • Basics of IQ Signals Part II
• Books:
  • Understanding Digital Signal Processing by Richard G. Lyons
  • Software Receiver Design: Build Your Own Digital Communication System In Five Easy Steps by C. Richard Johnson, Jr., William A. Sethares, & Andrew G. Klein
• Application Notes:
  • Atmel: Manchester Coding Basics

This information came from the excellent wiki of BladeRF