| The Maximin algorithm, proposed by Torrieri and Bakhru, adaptively updates the weights of an antenna array to provide simultaneous interference suppression and beamforming in a frequency hopping (FH) communication system. The Maximin algorithm is named such because the desired signal is enhanced and the interference is suppressed simultaneously. And the Maximin shows good performance under a broadband tone interference environment, but poor performance under frequency offset and friendly interference, i.e., a data-modulated interference environment. This paper analytically derives how the frequency offset affects on the Maximin algorithm and verifies the analytical results with simulation results. In addition, this paper proposes to use the recently published MOSTLE algorithm because the MOSTLE is robust against frequency offset and friendly interference. |
| Hyuck M. Kwon (S’82-M’84-SM’96) was born in Korea on May 9, 1953. He received his B.S. and M.S. degrees in electrical engineering (EE) from Seoul National University, Seoul, Korea, in 1978 and 1980, respectively, and his Ph.D. degree in computer, information, and control engineering from the University of Michigan at Ann Arbor, MI, in 1984. From 1985 to 1989, he was with the University of Wisconsin, Milwaukee, WI, as an assistant professor in EE and CS department. From 1989 to 1993, he was with the Lockheed Engineering and Sciences Company, Houston, TX, as a principal engineer, working for NASA space shuttle and space station satellite communication systems. Since 1993, he has been with the ECE department, Wichita State University, KS, where he is now a full professor. In addition, he held several visiting and consulting positions at communication system industries, a visiting associate professor position at Texas A&M University, College Station, TX, in 1997, and a visiting professor position at KAIST, Daejeon, Korea, in 2005. His current research interests are in wireless, CDMA/FH spread spectrum, smart antenna, MIMO, and OFDMA communication systems. |