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.