Tag Archives: wcdma antenna

PRACH Message Structure and Access Timeslot Structure

Here I write about PRACH Message Structure and PRACH Access Timeslot Structure for WCDMA 3G with its Flow in Image. The data and control bits of the message part are processed in parallel. The SF of the data part can…

Physical Random Access Channel PRACH work for WCDMA

PRACH Physical Random Access Channel work in WCDMA Carrying uplink signaling and data, consist of two parts: One or several preambles: 16 kinds of available preambles 10 or 20ms message part The Physical Random Access Channel (PRACH) is used by…

Work of Synchronization Channels P-SCH & SSCH in 3G WCDMA

Synchronization Channel mainly Used for cell search its having Two sub channels: P-SCH and S-SCH, SCH is transmitted at the first 256 chips of every time slot. Primary synchronization code is transmitted repeatedly in each time slot. Secondary synchronization code…

Active Distributed Antenna Systems inside 3G

A DAS contains the same active components present in a DAS passive, with the addition of active devices such as amplifiers, repeaters or amplifiers bidirectional (BDAS) to amplify and / or radio signals shipping. This enables an active DAS to…