DecodingUMTS/RadiomodemFDD

UMTS FDD Radiomodem

Summary: Basically, TrCH get spread with their individual codes, summed, scrambled with the cell's long code and shaped with a root-raised-cosine pulse. The chip rate is constant at 3.84 MHz and channel spacing is 5 MHz.

Bands and ARFCNs

Frame/Slot Structure

Pilot Sequence

Active Power Control

Modulation Process

Spreading

Scrambling

I/Q Multiplexing

Uplink

Downlink

Pulse Shaping