Unlike many modern tech books that are obsolete within 24 months, Feher's work is "timeless theory." While the chips have changed (moving from GaAs FETs to CMOS), the physics of phase noise and ISI has not. A PDF from the 1990s is still 95% relevant for the baseband design of a 2025 device.
You don’t need the PDF. You need one idea from Feher: “Minimum Eb/N0 is a lie if your amplifier is nonlinear.” Chase that, and you’ll understand why 4G/5G still struggles with the problems he solved in 1995.
There is no legal free PDF of the complete 1995 edition. Springer (publisher) protects it fiercely. The PDFs floating on sketchy sites are usually:
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