Some Specification of DVB-S, DVB-S2 and DVB-T

DVB-S short form of Digital Video Broadcasting — Satellite

Major Specification of DVB-S

  1. DVB-S is basically used for SD signal not for HD.
  2. Technically DVB-S sends in MPEG2 compression algorithm.
  3. DVB-S is used in MCPC and SCPC modes for broadcast network feeds. MCPC is for multiple channels per carrier and SCPC is for Single channel per carrier.
  4. Roll-off factor: α = 0.35

 

DVB-S2 is the short form of Digital Video Broadcasting – Satellite – Second Generation

Major Specification of DVB-S2

  1. DVB-S2 is basically used both for SD and HD.
  2. DVB-S2 sends in MPEG4 which is a better compression algorithm (HD doesn’t implies MPEG4).
  3. DVB-S2 is used in both MCPC and SCPC modes for broadcast network feeds.
  4. Modulation schemes both QPSK and 8PSK.
  5. At the same satellite transponder bandwidth and emitted signal power, DVB-S2 performance gain over DVB-S is about 30%.
  6. Roll-off factor is both α = 0.20 and α = 0.25

 

DVB-T is the short form of Digital Video Broadcasting — Terrestrial

Major Specification of DVB-T

  1. 8K-mode or 2K-mode are two option for the number of carriers. These are actually 6,817 or 1,705 carriers that are approximately 1 kHz or 4 kHz apart.
  2. DVB-T offers total QPSK, 16QAM, 64QAM modulation schemes.
  3. DVB-T uses Coded Orthogonal Frequency Division Multiplexing (COFDM)
Updated: June 13, 2019 — 2:23 PM

2 Comments

Add a Comment
  1. Hi,

    Tnx for your post. This is so much informative and full of engineering term.

    Can you please explain the SD and HD in the simple language ?

    Waiting for your reply. Thanks in advanced.

  2. To: Md. Habibe Azam-
    Thanks for your interest. We will describe your topic (SD and HD) shortly.

Leave a Reply

Your email address will not be published. Required fields are marked *

Broadcast Idea © 2019