Weak signal modes

Literature, references and acknowledgements

Literature

• The Scientist and Engineer's Guide to Digital Signal Processing

References

• Frequency Domain Analysis - Basic Concepts and Definitions
• FFT for dummies
• The principle of forward error correction

Acknowledgements
My thanks go to:

• Alan Melia (G3NYK) for checking spelling and grammar.
• Geri Kinzel (DK8KW), John Andrews (W1TAG), Dave Pick (G3YXM) and Alan Melia (G3NYK) for the measurements to compare QRSS with normal (aural) CW.
• Alberto di Bene (I2PHD) for his comments on averaging techniques.
• Andy Talbot (G4JNT) for the literature information.
• André Kesteloot (SK, N4ICK) for pointing me to the article 'Low-power Long-range digital communications system'.
• Alberto di Bene (I2PHD) for the information and discussions that helped me to write the part on Jason.
• Steward Nelson (KK7KA) for the information and discussions that helped me to write the part on WOLF.