esd.m

802.15 dsss 物理协议层方针代码

%function [ outpacket ] = add_header( x )
%this funcion is used to add header to the input data
%  x is the data
%  outpacket is the packet with header
x=[1 0 1];

cr=2; %chip rate

mac_header=(sign(rand(1,10*8)-0.5)+1)/2;   %10 octets

phy_header=(sign(rand(1,3*8)-0.5)+1)/2;    %3 octets

SFD=[0 0 0 0 1 1 0 0 1 0 1 1 1 1 0 1];

Training=double('JNJNB5ANB6APAPCPANASASCNJNASK9B5K6B5K5D5D5B9ANASJPJNK5MNCPATB5CSJPMTK9MSJTCTASD9ASCTATASCSANCSASJSJSB5ANB6JPN5DAASB9K5MSCNDE6AT3469RKWAVXM9JFEZ8CDS0D6BAV8CCS05E9ASRWR914A1BR');

x=length(Training);
training=zeros(1,x*8);
for i=1:x
    for p=1:8
        temp=deci2bin(Training(i),8);
        training(i*p)=temp(p);
    end
end
    
Acq=(sign(rand(1,16*8)-0.5)+1)/2;

crc_gen=[1 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 1];

hcs=crc([phy_header mac_header],crc_gen);

%add stuff bits
if mod(size(x,2),cr)~=0
    x=[x mod(size(x,2),cr)];
end

outpacket=[Acq training SFD phy_header mac_header hcs x];