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  System Architecture

4G-LTE-Cell-Search-MIB-and-SIB1-recovery

Capture a live Over The Air (OTA) 4G/LTE signal using Adalm-Pluto SDR and demodulate LTE frames with MATLAB code to obtain MIB and SIB1 messages.

Project Objectives

• To design affordable and reliable internet connectivity
• To provide analysis that will improve the QoS of mobile internet service providers
• To provide engineering services for consumers by helping them configure and position equipment for better * connectivity
• To model current and future wireless networks that will serve both small and medium-scale enterprises.

Model

• Four Frames of Live eNodeB signal is captured with an Adalm-Pluto SDR or Spectrum analyzer and saving it in MATLAB format (.mat)
• The .mat file is transferred to MATLAB for processing
• MATLAB Algorithm is implemented to decode the System Information Type 1 (SIB1) and Master Information Block (MIB)

Definitions

• MIB is a very important message or information that is broadcasted by the LTE eNodeB irrespective of any user's presence. The MIB is first among the other system information blocks or SIB, which are also broadcasted by the eNodeB.
• While the MIB is broadcasted on the Physical Broadcast Channel (PBCH), SIBs are sent on the Physical Downlink Shared Channel (PDSCH) through Radio Resource Control (RRC) messages. SIB1 is carried by the "SystemInformationBlockType 1" message.

Project Outcome

• Live LTE signals of different service providers were captured with a spectrum analyzer and/or Adalm-Pluto SDR and exported to MATLAB.
• The system information type 1 (SIB1) control information was extracted using LTE Toolbox and demodulated to show the cell information, frame, and subframe structures.
• The Master Information Block (MIB) was extracted and decoded as well.
• This information reveals the configuration issues with service providers and recommendations can be made to improve their QoS.

Built With

• matlab