The object
Andrew J. Viterbi co-developed code-division multiple access technology for cellular radio systems. CDMA let multiple mobile devices share radio spectrum with improved interference handling and security, and became the signal-processing foundation for manufactured cellular-network equipment and handsets.
01
What Andrew did
Co-developed CDMA transmission technology for cellular radio systems.
02
Why it matters
USC describes CDMA as the most widely used cell-phone technology in the United States.
03
Living-status check
USC published Viterbi’s 2025 Pioneer Talk, in which he discusses his two engineering and entrepreneurial careers, directly documenting a recent professional appearance.