{"id":415,"date":"2017-01-04T18:07:49","date_gmt":"2017-01-04T18:07:49","guid":{"rendered":"http:\/\/headendinfo.com\/?p=415"},"modified":"2020-04-26T07:36:48","modified_gmt":"2020-04-26T07:36:48","slug":"statistical-multiplexing","status":"publish","type":"post","link":"https:\/\/headendinfo.com\/statistical-multiplexing\/","title":{"rendered":"What Is Statistical Multiplexing For Digital Headend System ? How Statistical Multiplexing Works ?"},"content":{"rendered":"\n

Statistical Multiplexing For Digital Headend System<\/h2>\n\n\n\n

As we all knows first we shifted from Analog Headend System to Digital Headend System to increase the number of channels.In analog headend we could run only 1 channel per frequency bandwidth where as now in digital headend system we can run 8 channels easily per frequency bandwidth.<\/p>\n\n\n\n

But now in digital headend system where we can run 8 channels easily per frequency we need to increase more number of channels in the same frequency bandwidth that is why the term came Statistical Multiplexing. Statistical Multiplexing can increase 30% more digital channels in same bandwidth.<\/em><\/p>\n\n\n\n

Statistical Multiplexing Working<\/h2>\n\n\n\n

Basic meaning of statistical multiplexing is that it removes all the additional information available in the video. In other words it remove frame which are repeating or having same information.Thus it delivers different frames only. In news channel, if a news reader reading the news then it is containing less information because background is same so it needs less bandwidth space.<\/p>\n\n\n\n

On the other hand if there is visual of outside news room in public then the information is changing rapidly.It contain more information that is why it needs more bandwidth. In statistical multiplexing there is a pool which contains number of channels.We gives particular bandwidth to pool only and then statistical multiplexing decides how much bandwidth needs to allocate to a particular service that is available in pool. Statistical multiplexer monitor the channel 50 times in one second to check bandwidth requirement.<\/p>

\n