معيار dvb-s2

معيار dvb-s2 بالإنجليزية Digital Video Broadcasting - Satellite - Second Generation (DVB-S2)أي بث الفيديو الرقمي فضائيا الجيل الثاني

المزايا الرئيسية

  • يسمح لزيادة معدل بيانات + 30 ٪ مقارنة مع DVB-S .
  • بهذه التقنية استطاعت الشركات زيادة معامل تصويب الخطأ FEC مما أدى إلى زيادة تحسين الصورة .
  • النظام الجديد يدعم إمتدادت كثيرة ومختلفة هندسياً وتقنياً مثل MPEG-2 وMPEG-4 وHDTV ولذلك فإنه يدعم جميع أنواع الصورة الفائقة والعادية وهو المستخدم حالياً من أغلب الباقات هو النظام فائق الوضوح وثلاثي الأبعاد
  • تدعم التقنية الجديدة أيضاً نطاق واسع جداً من النمذجة QPSK (2bits/symbol), 8PSK (3 bits/symbol), 16APSK (4 bits/symbol), 32APSK (5bits/symbol) Schemes مما يعني امتداد واسع للإشارة المستقبلة من القمر .[1]
  • يلي هذا النظام DVB-S2X وهواضافة اختيارية سترفع الكفائة إلى 51 % من النظام dvb-s2 كما ستدعم النمذجة إلى 64/128/256APSK

رسيفرات داعمة للنظام

  • DreamBox 800HD
  • Humax IR2000HD
  • Topfield SPI-2010

المراجع


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