Modulation Technique This topic has 0 replies, 1 voice, and was last updated 14 years, 10 months ago by Rubel. Viewing 1 post (of 1 total) Author Posts 16th January 2010 at 09:17 #60742 RubelGuest Dear, Can any one pls help me from Transmission planning viewpoint that why we are using different Modulation technique like CQPSK, 16 QAM for PDH link? Regards Md. Shamsul Haque Rubel Author Posts Viewing 1 post (of 1 total) The forum ‘Telecom Design’ is closed to new topics and replies.