IIT Delhi alumnus Paulraj built India's sonar in 1971, later pioneered 4G/5G MIMO tech

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Indian engineer Arogyaswami Paulraj developed the APSOH sonar system for the Indian Navy in 1971, boosting India's underwater detection capabilities. He later conducted research at Stanford University, where he pioneered MIMO technology. MIMO became a foundational element of modern wireless communication standards, including 4G, 5G, and Wi-Fi. Paulraj's career spans decades of impactful work across defense and civilian technology sectors. His journey underscores how fundamental research can lead to discoveries that transform everyday life on a global scale.

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