WCDMA CPICH: Common Pilot Channel Explained

wcdma
umts
pilot channel
radio channel
mobile communication

This page describes the CPICH, or common pilot channel, with respect to the WCDMA/UMTS system. The pilot channel is used by the base station to provide a reference to all mobile stations and to aid channel estimation at the terminals.

It has a predefined bit sequence (all 1s) which is scrambled with the cell-specific primary scrambling code. There are two types of CPICH: primary and secondary.

WCDMA CPICH common pilot channel

UE WCDMA/UMTS Timers Explained

A comprehensive guide to WCDMA/UMTS timers in User Equipment (UE), covering functions, start/stop conditions, and expiry actions for timers T300 to T317.

wcdma
umts
timer