An Approach to Mobile Communication with Software Defined Radio

Synchronizing a mobile device to the host system is an important feature for all mobile communication systems. In WCDMA, a Radio Access Technology (RAT) used in a third generation mobile telecommunication system called UMTS, the synchronisation process is divided in a number of steps. This thesis pr...

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Bibliographic Details
Main Author: Persson, Erik
Format: Bachelor Thesis
Language:English
Published: 2013
Subjects:
SDR
Online Access:http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-56080
Description
Summary:Synchronizing a mobile device to the host system is an important feature for all mobile communication systems. In WCDMA, a Radio Access Technology (RAT) used in a third generation mobile telecommunication system called UMTS, the synchronisation process is divided in a number of steps. This thesis project covers the necessary steps in order to synchronise and receive broadcast messages from a WCDMA radio base station by creating a software WCDMA receiver capable of tuning in on WCDMA radio base stations, finding radio frames, detecting coding schemes used by the base station and finally being able to capture and decode broadcast messages transmitted by the base station and in the meantime also evaluate the usage of software defined radio within WCDMA. This involves performing tasks traditionally performed in hardware such as processing signals, detecting slot and frame boundaries, descrambling, performing phase compensation, detecting scrambling codes, decoding channels, decoding convolutionally encoded bit strings, performing CRC calculations and much more in order to turn the signal received by a universal software radio peripheral into decoded bits.This thesis project was carried out, in-house at Neava AB in LuleƄ, Sweden. Validerat; 20130930 (global_studentproject_submitter)