Here is a helpful guide regarding the book, what it covers, and how you can legally access or purchase it.
How to pack more data into limited frequency bands. Modulation Schemes: Covers QPSK, OQPSK, -DQPSK, and GMSK (the backbone of the 2G GSM standard). wireless digital communication kamilo feher pdf
The book begins with a rigorous, yet approachable, look at digital modulation. Feher doesn't just recite formulas; he explains the why behind the math. Here is a helpful guide regarding the book,
Wireless Digital Communications: Modulation and Spread Spectrum Applications : Kamilo Feher what it covers
DSP techniques for audio and voice in wireless telephone systems. Methods for signal path combining to combat interference. Wireless Digital Communications: Design and Theory