John HersheyJohn E. Hershey has more than 30 years' experience in telecom security. The author or co-author of five advanced texts: Hadamard Matrix Analysis and Synthesis: With Applications to Communications and Signal/Image Processing; The Elemnts of System Design; Data Transportation and Protection (Applications of Communications Theory); Perspectives in Spread Spectrum; and Doppler Applications in LEO Satellite Communication Systems, he was elected a Fellow of the IEEE "for contributions to secure communications" and currently teaches cryptography at Rensselaer Polytechnic Institute in Troy, New York. He lives in Ballston Lake, New York. Read More Read Less