lathi text trademark user-friendly and very easy to read presents a complete and modern treatment of communication systems. New topics discussed include spread-spectrum systems, cellular communication systems, global positioning systems (GPS), and the entire chapter on digital technology emerged (such as SONET, ISDN, BISDN, ATM, and video compression). Ideal for the first communication systems course for electrical engineers, Modern Digital and Analog Communications Systems offers students an exceptional pedagogical style, consistently do an excellent job to explain difficult concepts clearly, using prose as well as mathematics.