I have 30 years of experience in the field of telecommunications, with specific knowledge of radio frequency communications, product development and computer applications. I have published on such topics as worldwide interoperability for microwave access (WiMAX), global systems for mobile communications (GSM), code division multiple accesses (CDMA), Wi-Fi, carrier Ethernet, metro Ethernet and packet Cable 2.0 networks. I have testified on patents, billing and failure analysis.