أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
UMTS (universal mobile telecommunication system)for voice and data and the modulation technique is QPSK
HSPA(high speed packet access for data only and the modulation technique vary QPSK16 QAM64QAM .
HSPA+ using the mimo
.