WCDMA TDD Physical layer vs WCDMA FDD Physical layer

The page covers difference between WCDMA TDD physical layer vs WCDMA FDD physical layer as per UTRA physical layer specifications.

Technical Specifications	WCDMA TDD physical layer	WCDMA FDD physical layer
Multiple Access type	TDMA,CDMA(inherent FDMA)	CDMA(inherent FDMA)
Duplex scheme	TDD	FDD
Channel spacing	5MHz and 1.66 MHz supported	5 MHz
Chip rate	3.84Mcps and 1.28Mcps	3.84Mcps
slot structure	15/14 slots per frame	15 slots per frame
Frame length	10ms
multi rate	multi-code,multi-slot and OVSF(Orthogonal Variable Spreading Factor)	multi-code and OVSF
FEC codes	Convolutional coding R=1/2 or 1/3 constraint length K=9, turbo coding( 8 state PCCC R=1/3) , service based coding
Interleaving	Inter-frame interleaving(10/20/40/80ms)
Modulation	QPSK/8PSK	QPSK
Detection	Coherent type and based on midamble	Coherent type and based on pilots
Burst types	three types supported traffic,random access and synchronization	NA
Dedicated channel power control	Uplink: open loop, 100/200 Hz Downlink: closed loop,rate<=800Hz	Fast closed loop, rate=1500 Hz
Intra frequency handover	Hard handover	soft handover,softer handover
Inter frequency handover	hard handover
Intra cell interference cancellation	Joint detection	Advanced receivers at the base station
Channel allocation(UTRA R4)	DCA supported	No DCA needed
Spreading factors supported(UTRA R4)	1 to 16	4 to 512

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