Search This Blog

Monday, January 31, 2011

Difference between WCDMA(UMTS/HSPA) and GSM,GPRS,EDGE

FeatureWCDMA/HSPAGSM/EDGE
Carrier spacing5 MHz200 kHz
Downlink modulationQPSK, 16QAM, 64QAMGMSK, 8PSK
Network ArchitectureFlat in HSPA (2), 4 in convenstional 4
Packet Scheduling and
 retransmission		BS(HSPA)BSC
Power Control 
Frequency		Upto 1500HzUpto 2Hz
Frequency reuse factor11 to 18
Frequency DiversityMultipath diversity
with rake receiver		Frequency Hopping with Frequency diversity
MIMO2x2None

Posted by kmshetty at 6:52 PM
Labels:

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)