DVB-T with Diversity switching deploys a single demodulator with multiple antennae and LNA's. depending upon the feedback from the individual AGC's the LNA/Antennae are switched correspondingly to avoid reflected paths and or to look at higher signal strengths. The higher the modulation order, the greater the pain you have with reflections/doppler effect. Diversity was introduced with mobile DVB-T to address the multipath issue to a certain extend. Cheers, Manu On Thu, Dec 28, 2017 at 8:10 AM, Harold Hallikainen wrote: > Both interesting ideas. Our current receivers have photodiodes pointing i= n > all directions. It would be interesting to have them pointed in only one > direction to minimize reflections. Also, short high speed transmissions > with a gap to allow for reflections to die out is interesting. > > Harold > >> Would it help to have a high / central location reflector (or just place >> the tx/rx there) that gave a good line of sight 1st path at all times. >> >> Would burst transmission help with fast data rate bursts followed by >> longer >> quiet periods to allow echos and longer paths to fade. >> >> Russell >> -- >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> > > > -- > FCC Rules Updated Daily at http://www.hallikainen.com > Not sent from an iPhone. > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .