SHPS DD
William Lee, a Wireless Genius...
Dr Lee has worked at one time or another with some of the major Companies involved in Wireless: PacTel/Airtouch, Qualcomm and Bell laboratories, among others... He is very well introduced and respected in his field... He is a Founding Partner, Shareholder (1 Million shares) and a Director on the Board of AccessTel, the Wireless/VoIP Company merging with SHPS...
Dr. William C. Y. Lee, Chief Scientist and Vice President of Strategic Technology at AirTouch Communications is recognized worldwide for his technical expertise. Throughout his career, Dr. Lee has made numerous significant contributions in the field of cellular communications. In the preface to the first edition of his book, Mobile Cellular Telecommunications Systems, written in 1989, Dr. Lee clearly states his goal for the cellular industry saying, "Let us join together to allow the cellular industry its optimum potential and set our goal that one day a pocket cellular phone will carry our calls to any place in the world.".
Dr. Lee joined AirTouch Communications (formerly PacTel Mobile Companies) in April 1985 to develop improvements to system performance and capacity. He was invited by the FCC to present a talk to the public on spectrum efficiency issues in August 1985 and digital cellular issues in September 1987, respectively. In the 1987 seminar, he presented a formula which has been adopted as a standard to test the radio capacity of any digital cellular system. He was the founder and co-chairman of CTIA's sub-committee for Advanced Radio Technologies in 1987 and was involved in Digital Cellular Standard Setting. His sub-committee generated the UPR (User's Performance Requirement), the guidelines for future digital cellular systems.
In 1989, Dr. Lee supported and assisted QualComm Inc. in pursuing the CDMA (Code Division Multiple Access) System for cellular. The CDMA System was demonstrated in San Diego in November 1989. That same year, he concentrated on developing PCN (Personal Communications Network) technology and headed the technology team that won the PCN license in the UK. Furthermore, he planned the new PCN system for Microtel.
In the early 1990s, Dr. Lee invented and patented a new microcell system that would reduce the frequency reuse factor from K = 7 to K = 3 and increase radio capacity by 2.5 times over the conventional microcell. To date, this new system has been implemented in the Los Angeles and San Diego Cellular Markets. Dr. Lee, along with Qualcom's executives, presented the CDMA system idea to the Korean Ministry of Communication, who later adopted the CDMA system as the Koren national standard.
In 1991, Dr. Lee was responsible for PacTel's application for a PCS Experimental License. He won the experimental license from the FCC in 1992. Winning the license involved the study of the frequency spectrum range from 640-2400 MHz in five cities: New York, Chicago, Dallas, San Francisco and Los Angeles.
In August 1995, under the direction of Dr. Lee, engineers from the Research and Technology MicroCell Team placed the first CDMA phone call over the microcell system in Los Angeles, utilizing the zone selector concept patented by Dr. Lee. This is believed to be the first CDMA call placed on a microcell system.
Dr. Lee was a pioneer in mobile radio communication studies. He developed a UHF propagation model (known as the Lee Model) for use in planning the Bell System's Analog Advanced Mobile Phone Service in 1984. He also applied the field component and polarization diversity schemes over mobile radio communications links. In developing cellular, he analyzed many diversity systems and favored the space diversity scheme. He set the spacing requirement for base station diversity antennas. While he was with the satellite communication research department at Bell Laboratories, he derived a method to calculate the rain rate statistics which would affect the signal attenuation at 10 GHz and above. Later the Bell System used his method and created a Bell System prediction model for space propagation. He studied and set a 3mm-wave link between the Empire State Building and Pan American Building in New York City experimentally using Bell Laboratories' newly invented IMPATT Diode in 1973. He was the first one to use the 100 Ghz 3mm-wave IMPATT diode in application.
Dr Lee has worked at one time or another with some of the major Companies involved in Wireless: PacTel/Airtouch, Qualcomm and Bell Laboratories (AT&T), among others and with ITT Defense Communications Division ... He has written 3 Books and some 200 technical papers, obtained some 20 Patents and is well respected in his field... He is a Founding Partner, Shareholder (1 Million shares) and a Director on the Board of AccessTel, the Wireless/VoIP Company that has merged with SHPS...
Dr. William C.Y. Lee
Vice President and Chief Scientist
Vodafone AirTouch Plc
Dr. William C.Y. Lee is Chief Scientist and Vice President of Global Technology at Vodafone AirTouch Plc. He joined the company (formerly AirTouch Communications and previously PacTel Mobile Companies) in April 1985 to develop improvements for system performance and capacity. Prior to joining AirTouch, Dr. Lee worked for ITT Defense Communications Division (ITTDCD), engineering military mobile projects. Previous to ITT, he was employed at Bell Laboratories, from 1964 to 1979, where he studied wave propagation in an anistropic medium, antenna theory, mobile radio propagation and systems, millimeter and optical wave propagation, switching systems, and satellite communications.
He was the founder and co-chairman of CTIA's sub-committee for Advance Radio Technologies in 1987 and was involved in digital cellular standard setting. Dr. Lee assisted and supported the pursuit of CDMA (Code Division Multiple Access) for cellular systems, which he also introduced to Korea. (CDMA later became the Korean national standard system.) He invented and patented a new microcell system in 1990 that reduced the frequency reuse factor from K = 7 to K = 3 and increased radio capacity by 2.5 times over the conventional microcell. His UHF mobile radio propagation model is known as the Lee Model.
Dr. Lee conducts 3-day courses sponsored by George Washington University. He is an IEEE Fellow, Radio Club of America Fellow, and a distinguished alumni of the Ohio State University where he received his Ph.D. in 1963 in electrical engineering. He received the IEEE VTS Avant Garde Award, the Bell Labs Dedicated Service Award, the ITTDCD Technical Contribution Award, and the 1998 CDMA Industry Achievement Award for technical achievement.
Dr. Lee has written more than 200 technical papers and three textbooks. His books are in several languages including Chinese, Korean, Japanese and Russian. In 1998, he revised his book Mobile Communications Engineering, published by McGraw-Hill. His new book, Lee's Essentials of Wireless Communications, will be released by McGraw-Hill in 2000. Dr. Lee has received twenty-seven U.S. patents, with five additional patents pending. He is a member of the California Council on Science and Technology, a member of the national Council on Competitiveness, and most recently was appointed to the FCC Technological Advisory Council. |
