Comparison between 3G Technologies

In this post we will compare different 3G technologies. Comparison is done using Receiver structure, Support closed-loop power control, Handoff, Demodulation mode, Chip rate, Transmit diversity mode, Synchronization mode and Core network. This is shown in the following table.

	WCDMA	cdma2000	TD-SCDMA
Receiver structure	Rake	Rake	Rake
Support closed-loop power control	Yes	Yes	Yes
Handoff	Soft handoff and hard handoff	Soft handoff and hard handoff	Relay handoff
Demodulation mode	Coherence demodulation	Coherence demodulation	Coherence demodulation
Chip rate (Mcps)	3..8	N*1228	1.2
Transmit diversity mode	TST, STT, and FBT	OT and ST	None
Synchronization mode	Asynchronous	Synchronous	Synchronous
Core network	GSM	ANSI-41	GSM

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WCDMA

Handover

Hard Handover

Soft Handover

WCDMA Power control

Rake receiver

Smart Antena

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