Space-Time Codes employ multiple antennas at the transmitter and the receiver of a wireless communications system for significantly improved performance. Discovered in the early 1990s, these codes have very quickly found their way into a number of new wireless communications standards such as 3G, 802.11n, and 802.16. Dr. Jafarkhani is one of the first researchers to work on this field and is widely considered to be one of the inventors of Space-Time Coding. Many experts in the field consider Dr. Jafarkhani to have been one of the authors of three of the most important publications in this field. Dr. Jafarkhani is the author of the recently published book Space-Time Coding, Cambridge University Press, 2005.