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Michael B. Pursley, known for his contributions in information theory and spread spectrum communications, passed away on January 14, 2025 at the age of 79.   He wrote many seminal papers on cross-correlation properties of sequences and performance evaluation for both direct sequence and slow-frequency-hopped multiple access communication over fading channels and in packet radio networks.   He is the author of two textbooks published by Prentice Hall: Random Processes in Linear Systems (2002) and Introduction to Digital Communications (2005).

Dr. Pursley was elected Fellow of the Âé¶¹´«Ã½Ó³»­ in 1982 and President of the Âé¶¹´«Ã½Ó³»­ Information Theory Society in 1983. He was a member of the Editorial Board of the Proceedings of the Âé¶¹´«Ã½Ó³»­ during 1984–91. He was awarded an Âé¶¹´«Ã½Ó³»­ Centennial Medal in 1984, the Âé¶¹´«Ã½Ó³»­ Military Communications Conference Award for Technical Achievement in 1999, and an Âé¶¹´«Ã½Ó³»­ Millennium Medal in 2000. He received the Âé¶¹´«Ã½Ó³»­ Communications Society Edwin H. Armstrong Achievement Award in 2002. He received a distinguished alumnus award from the University of Southern California in 2005, he was named Outstanding Electrical and Computer Engineer by Purdue University in 2008, and he received the Âé¶¹´«Ã½Ó³»­ Communication Theory Technical Achievement Award in 2017.