tag:blogger.com,1999:blog-5688599.post1286248521897349699..comments2023-10-12T04:54:05.108-07:00Comments on Deep Freeze 9: Resulting field strength rules: New reasons for an old ideaJP (Pierre) de Vrieshttp://www.blogger.com/profile/02311009024575927588noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-5688599.post-81903971401096460142018-08-27T10:42:32.707-07:002018-08-27T10:42:32.707-07:00There's a fundamental difference in the statis...There's a fundamental difference in the statistical support for DTV and cellular contours and MIMO-type transmitters. In the former, the statistical dimensions of time and location (and confidence, which is often ignored and assumed to take a median value) account for variations in propagation due to terrain, multi-path interference, and atmospheric conditions. In the latter case the statistical variation is chiefly due to the intentional variation of the transmitter (including the antenna) parameters. The location and time variability statistics are fairly well-behaved over a wide range of probabilities (say, 10%-90%) because the processes are random, but MIMO will almost certainly not be random. It's not clear to me how statistics over an area due to MIMO could be determined a priori...Bob@weller.orghttps://www.blogger.com/profile/05742979000075529356noreply@blogger.com