You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: BERTool_QPSK_RicianChannel.m
    path of file: ./repos/SatCommSystem-QPSK-OFDM-LSEstimation-TransionosphericChannel
    
    the code of the file until where you have to start completion: function [BER, numBits] = BERTool_QPSK_RicianChannel(EbNo, maxNumErrs, maxNumBits)

    persistent FullOperatingTime

    % Display Line on the Start of Imitation Modeling
    disp('======================================');
    % Start Time
    tStart = clock;

    
function [BER, numBits] = BERTool_QPSK_RicianChannel(EbNo, maxNumErrs, maxNumBits)

    persistent FullOperatingTime

    % Display Line on the Start of Imitation Modeling
    disp('======================================');
    % Start Time
    tStart = clock;
    % Total Duration of Imitation Modeling
    % Saving for each trials. To restart need 'clear all' command.
    if isempty(FullOperatingTime)
        FullOperatingTime = 0;
    end