About the Author: Krishnamurthy Raghunandan has been a Technical Lead for the IEEE Communication Society's WCET exam. He is also a Professional Engineer licensed in the state of New York. He holds a Master's in Electrical Engineering from the Indian Institute of Technology, Kharagpur, and conducted research on satellite communication receiving M.Phil at the University of Surrey, England. Since 2004, he has been a Project Engineer responsible for introducing the latest wireless technologies into subway systems and buses at New York City Transit. From 1993 to 2004, he worked at AT&T / Lucent Bell Laboratory, Holmdel, New Jersey, developing and testing cellular handsets (evaluation in lab and field trials), was a Team Leader for 3GPP standards RAN (Radio Access Network) and was a Bell Labs field representative developing new products and networks for customers. During 1977-87 he worked in Indian Space Research Organization working on launch vehicles and satellite checkout systems. He has published numerous papers with IEEE.