update_mobile_structres_before_frame_g_fac_no_fsf.m

基于OFDM的无线宽带系统仿真It contains mainly two parts, i.e. link-level simulator and system-level simulator.

function [st_channelGrid,st_testConfig,st_mobileStations,MobileIdCnt,st_baseStation,st_measurement]= update_mobile_structres_before_frame_g_fac_no_fsf(st_testConfig,st_channelGrid,st_mobileStations,MobileIdCnt,st_baseStation,st_measurement)
%__________________________________________________________________________
% Type:                 :   Function Header
% Function name         :   ofdma_sfn_Cellular_la_dl_simulator
% input                 :   st_channelGrid,st_testConfig,st_mobileStations,st_baseStations
% output                :   st_channelGrid,st_testConfig,st_mobileStations,st_baseStations
%                       :
% calling functions     :   input_config
% called functions      :
% Function Description  :       % Update mobile structure.
%   its acceleraion
%   its position, therefore
%   its pathloss
%   settings of channel object
%       its history to zero. No need to store history now
%       its rms delay spread as per the distance.
%       its doppler as per the new velocity
%     ALSO UPDATE REQUIRED PARAMETERS
%__________________________________________________________________________

% Update new velocity and location

% st_testConfig.locMS=nan(st_testConfig.nuMob,1); % This is done so that for
%                                                 % each frame, the mobile
%                                                 % begins at a new location
%                                                 % This has to be changed
%                                                 % depending on the
%                                                 % simulation condition,
%                                                 % probably a switch is a
%                                                 % good option
if st_testConfig.nFrmCnt > 1
    %Plot current mobiles
    figure(1);
    hold on;
    plot(st_testConfig.locMS,'g.');
    % pause(1)
end


% Check each mobile, if the remaining file size to be trasmitted is less
% than zero. If so, then initiate a new mobile in that handle
new_mobile_handles=[];
finished_locs=[];
bad_mobiles_loc=[];
old_mobile_handles=[];
for lp_nmob =1:st_testConfig.nuMob
    % IDENTIFY MOBILE WHICH ARE NOT ABLE TO GET THROUGH BUT ARE SIMPLY BLOCKING
    % THE NETWORK RESOURCES.
    % TAKE THEM AWAY FROM THE NETWORK, i.e. DO NOT SERVE THEM ANY MORE AND MARK
    % THEM WITH A YELLOW STAR
    %         if st_testConfig.nFrmCnt > 4
    %             if sum(st_mobileStations(lp_nmob).MobNumber([st_testConfig.nFrmCnt - [0:3] ])) == 0
    %                 bad_mobiles_loc=st_testConfig.locMS(lp_nmob);
    %                 st_mobileStations(lp_nmob).RemFileSz(st_testConfig.nFrmCnt-[1 0]) = -999999;
    %                 st_measurement.outageCnt=st_measurement.outageCnt+1;
    %             end
    %         end
    %     MAX_OFDM_SYMBOL_WAIT=4*4; %(4 ofdm symbols x 4 sub frames )
    %  if st_testConfig.nFrmCnt > MAX_OFDM_SYMBOL_WAIT
    %      if (   ( st_mobileStations(lp_nmob).RemFileSz(st_testConfig.nFrmCnt) == st_mobileStations(lp_nmob).RemFileSz(st_testConfig.nFrmCnt-MAX_OFDM_SYMBOL_WAIT+1)) & (sum(st_mobileStations(lp_nmob).MobNumber([st_testConfig.nFrmCnt - [0:MAX_OFDM_SYMBOL_WAIT-1] ])) == 0) )
    %         bad_mobiles_loc=st_testConfig.locMS(lp_nmob);
    %         st_mobileStations(lp_nmob).RemFileSz(st_testConfig.nFrmCnt-[1 0]) = -999999;
    %         st_measurement.outageCnt=st_measurement.outageCnt+1;
    %     end
    % end

    % IF SINR is extreemly low, then take away the mobile from being served
    if st_testConfig.nFrmCnt > 1
        if (   mean(st_mobileStations(lp_nmob).sinrFeedBack) < 10^(st_testConfig.SINR_Threshold/10) )
            if st_testConfig.nFrmCnt > st_testConfig.MAX_OFDM_SYMBOL_WAIT
                if (   ( st_mobileStations(lp_nmob).RemFileSz(st_testConfig.nFrmCntSlot) == st_mobileStations(lp_nmob).RemFileSz(mod((st_testConfig.nFrmCntSlot-st_testConfig.MAX_OFDM_SYMBOL_WAIT+1),st_testConfig.nuFrmPerSlot)+1)) & (sum(st_mobileStations(lp_nmob).MobNumber(mod([st_testConfig.nFrmCntSlot - [0:st_testConfig.MAX_OFDM_SYMBOL_WAIT-1] ],st_testConfig.nuFrmPerSlot)+1)) == 0) )

                    %                    mod([st_testConfig.nFrmCntSlot - [0:st_testConfig.MAX_OFDM_SYMBOL_WAIT-1] ],st_testConfig.nuFrmPerSlot)

                    bad_mobiles_loc=st_testConfig.locMS(lp_nmob);
                    st_mobileStations(lp_nmob).RemFileSz(mod(st_testConfig.nFrmCntSlot-[1 0],st_testConfig.nuFrmPerSlot)+1) = -999999;
                    st_measurement.outageCnt=st_measurement.outageCnt+1;
                end
            end
        end
    end


    if st_mobileStations(lp_nmob).RemFileSz(st_testConfig.nFrmCntSlot)<=0
        new_mobile_handles = [new_mobile_handles lp_nmob];% Store the mobile handle number
        % to be used in channel creation
        MobileIdCnt=MobileIdCnt+1;
        st_mobileStations(lp_nmob).MobNumber(st_testConfig.nFrmCntSlot) = MobileIdCnt;
        st_mobileStations(lp_nmob).RemFileSz(st_testConfig.nFrmCntSlot)=st_testConfig.MaxFileSz;
        st_mobileStations(lp_nmob).ThptAvgPast = 1;% Past average throughput to be used in the PF algorithm
        finished_locs(lp_nmob)=st_testConfig.locMS(lp_nmob);
        st_testConfig.locMS(lp_nmob)=nan;
        st_testConfig.veloMS(lp_nmob)=nan;
    else
        % Store the handles for the mobile handlers who will continue with
        % the same old mobiles
        old_mobile_handles=[old_mobile_handles lp_nmob];
    end


end
st_baseStation.new_mobile_handles(1:length(new_mobile_handles))=new_mobile_handles;


if st_testConfig.nFrmCnt > 1
    %     % Plot location of mobiles which finished transmitting
    figure(1);
    hold on;
    plot(finished_locs,'k.');
    %     % pause(1)
end

% Plot location of mobiles which have been terminated
figure(1);
hold on;
plot(bad_mobiles_loc,'rs');
% % pause(1)
% %title (['Cell Layout, Frm No = ' num2str(st_testConfig.nFrmCnt) ' out no = ' num2str(st_measurement.outageCnt) 'total bits = ' num2str(round(st_measurement.totalBitsSent)) ' Tot Users = ' num2str(MobileIdCnt)])
% title (['Frm No.=' num2str(st_testConfig.nFrmCnt-1) ' out=' num2str(st_measurement.outageCnt) ' bps/Hz=' num2str(round(st_measurement.totalBitsSent)/((st_testConfig.nFrmCnt-1)*st_testConfig.FramePeriod*st_testConfig.bw)) ' Nu Usrs=' num2str(MobileIdCnt) ' T=' num2str((st_testConfig.nFrmCnt-1)*st_testConfig.FramePeriod) 's' ' Mbps=' num2str(round(st_measurement.totalBitsSent)/((st_testConfig.nFrmCnt-1)*st_testConfig.FramePeriod*1024*1024)) ' KB=' num2str(round(st_measurement.totalBitsSent)/(8*1024))])
% xlabel(['Total chunks(blocks) in error=' num2str(st_measurement.totalFramesinError) ', BLER=' num2str(st_measurement.totalFramesinError/(st_testConfig.nFrmCnt*st_baseStation.nuSubChannels)) ])
%sprintf('\n Total Frames in Error = %d \n average FER = %f \n',  st_measurement.totalFramesinError,st_measurement.totalFramesinError/(st_testConfig.nFrmCnt*st_baseStation.nuSubChannels))
% ['Frm No.=' num2str(st_testConfig.nFrmCnt-1) ' out=' num2str(st_measurement.outageCnt) ' bps/Hz=' num2str(round(st_measurement.totalBitsSent)/((st_testConfig.nFrmCnt-1)*st_testConfig.FramePeriod*st_testConfig.bw)) ' Nu Usrs=' num2str(MobileIdCnt) ' T=' num2str((st_testConfig.nFrmCnt-1)*st_testConfig.FramePeriod) 's' ' Mbps=' num2str(round(st_measurement.totalBitsSent)/((st_testConfig.nFrmCnt-1)*st_testConfig.FramePeriod*1024*1024)) ' KB=' num2str(round(st_measurement.totalBitsSent)/(8*1024))]

% as of now this function will create a random drop of users this will be
% changed very soon where users who have finished trasmitting will quit the
% system while new users will join: This latter part has been accomplised
% [st_testConfig.locMS,st_testConfig.veloMS]=mobmove(st_testConfig.locMS,st_testConfig.veloMS,st_testConfig.aMean,st_testConfig.vMean,st_testConfig.dT,st_testConfig.rombvec/st_testConfig.coverageReductionFactor);
[st_testConfig.locMS,st_testConfig.veloMS]=mobmoveScale(st_testConfig.locMS,st_testConfig.veloMS,st_testConfig.aMean,st_testConfig.vMean,st_testConfig.dT,st_testConfig.rombvec,st_testConfig.centerBsLoc);
% %The next block of codes checks if the new user added should be allocated
% %to the desired base station! This is done by comparing the signal power of
% %all base stations at the new mobile location. If the highest power is that
% %due to the current base station, then ok, otherwise, the new mobile is not
% %put under the desired base station and a new mobile is generated for this
% %handler
%
%
% % Store the location and velocities of the old mobiles. This is needed,
% % since the mobmove function will be called several times and location of
% % the old mobiles would get updated, which is not desired. Therefore the