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How does UMTS differ than HSPA?

UMTS HSPA
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Question added by Rana Alnajjar , Web developer , Lebcards
Date Posted: 2013/07/03
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حنان عبدالحليم عبدالحكيم الديب
by حنان عبدالحليم عبدالحكيم الديب , technical support specialist , TEDATA

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       

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Deleted user
by Deleted user

UMTS is3rd mobile generation technology for voice and data transfer, HSPA is enhancement of UMTS for high speed data tranfer.

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