D2h changed FEC for TP 11609 H & 11672 V

[v_srikanth961]

This change reduces space rather than increasing it. Please notice the last Bitrate column in the image. Bandwidth reduced from 89 Mbps to 80 Mbps. (less by 9 Mbps)

2/3 FEC means 66% data bits and 33% error correction bits. 3/5 means 60% data bits and 40% error correction bits.

This change should reduce scrambled picture and audio quality issues due to loss in transmission.

D2H still has free space on other TPs. This change is definitely not for channel addition.

If anyone is interested here is the calculation.

Symbol Rate: 44994 * 1000 (symbols per second)
Each symbol reperesents 3 bits (8 PSK).
Total Bandwidth: 44994 * 1000 * 3 = 134982 * 1000 ~ =134 Mbps

2/3 FEC => 134 Mbps * 2/3 = 89 Mbps Usable Bandwidth
3/5 FEC => 134 Mbps * 3/5 = 80 Mbps Usable Bandwidth

 

[supermachi]

for 4k only don't expect any more channel till world cup end

 

[Dinesh jain]

gud share bro

 

[Akash Modi]

Now changed FEC 3/5 to 2/3

 

[Akash Modi]

Now changed FEC 3/5 to 2/3

 

[M.J.Sadiq]

Good update Deepu.. And yes, now it is changed to 2/3 again..

 

[dayag]

Strange.thread starter don't know the difference between sr & fec

 

[Sgokul Gp]

Gud share bro.

 

[Dileep Kumar]

Good Share Deepu Bro