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Rating: 
Summary: Imperfect, but quite useful
Review: An informative and highly useful book. I found this book to be readable overall and it contained cutting-edge info (when I first read the book in 1996) about wireless communications, spread spectrum, etc. There seems to be some variation in the level of lucidity, clarity, readability and the level of depth vs. breadth in explaining the material between the various chapters, indicating that perhaps the author is more knowledgeable on some topics compared to others. Regretfully I agree with some of the previous Amazon reviewers that the author places too much emphasis on the modulation schemes that go by his name, but overall the book was helpful to our design team at the time as a good source and we referred to it often in the initial modem design phases.
Rating:
Summary: Good coverage, but narrow focus
Review: In-depth coverage of modulation scheme, but somewhat limited. Good book for those keen on learning one of the proprietary modulation schemes out there.
Rating: 
Summary: Bad, very very bad
Review: This book is terrible. Don't waste you money. Never having seen such a poorly written, self promoting text, I took it upon myself to look further into the matter.Basically, the book is a pitch for the authors so called patented FQPSK. Upon further investigation, I discovered that an entity called "digcom" licenses fqpsk. The web site, ..., list a cartel of sorts that leads one to believe that many major companies are embracing fqpsk as a standard. I contacted a couple of the companies listed and talked to the VP's of engineering. They all had nothing good to say, and were suprised that digcom still listed them as part of the fqpsk consortium. Basically, they had given up on fqpsk and pulled out of the consortium.
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