To: Maurice Winn who wrote (8010 ) 4/14/2007 4:57:05 PM From: 49thMIMOMander Respond to of 12242 Sorry, that was obviously the 40x capacity CDMA handset which is a lame duck, does not move, in a cell where nobody else too moves, and no neighbors, nor provided with a string of MIMO antennas in a magic array leading all the way to the base stations (that is called ADSL these days, when the string of multiple antennas form an wired copper cable). I guess nobody has yet to see even that 10x capacity with moving ducks, and barely 1x with a fast flying one. (one needs to track all those multipath fadings, something Hilbert was good at, Viterbi kind of knew, but IJ did not want to discuss and the QuackEngineer does not understand)en.wikipedia.org Kalman, the real guy, he often succeeded in divided something noisy by noisy zero.en.wikipedia.org An example application would be to provide accurate continuously-updated information about the position and velocity of an object given only a sequence of observations about its position, each of which includes some error. It is used in a wide range of engineering applications from radar to computer vision. Kalman filtering is an important topic in control theory and control systems engineering. (but not yet, fully, in mobile phones)en.wikipedia.org --- He is most famous for his co-invention of the Kalman filter, a mathematical technique widely used in control systems and avionics to extract a signal from a series of incomplete and noisy measurements. Kalman's ideas on filtering were initially met with scepticism, so much so that he was forced to first publish his results in a mechanical (rather than electrical) engineering journal. He had more success in presenting his ideas, however, while visiting Stanley Schmidt at the NASA Ames Research Center in 1967. This led to the use of Kalman filters during the Apollo program. --- Just what the 40x QuackDMA still would have needed, and has always needed, and still needs... Note, nothing in real public detail is known of his success with the US missile defense. PS Luckily I am banned from the other Q-threads, because I have always enjoyed and had fun with Kalman filter and the great art of dividing anything with zero.