OFDM MATLAB 仿真程序.doc

6t1F6WGdH5F u'r.O,mB0X i1k,x0Y\+R$U5U5? @*x0echo off;clear all;close all;clc;
1fKf&|r0gU-D-_[0fprintf( 'OFDM仿真\n') ;
wXX[in%m,ZB0tic
% --------------------------------------------- %
B6})eu] Zx0%                   参数定义                     %
3TN`Zk9x)OI6xK0% --------------------------------------------- %中国通信网-无限分享w/`DDoK
% Initialize the parameters
kH#Bs4[J o0NumLoop = 1000;中国通信网-U
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NumSubc = 128;
pK1dA?;[O0NumCP = 8;
k+y$E X~&y6RW0SyncDelay = 0;中国通信网-无限分享0d*m;@~{
*|.J/aC~#i(X0% 子载波数            128
!hb%j!MTuO;Y2V0h0% 位数/ 符号          2中国通信网-无限分享$}`k6[,N?
% 符号数/ 载波        1000
p;I3sOzRR0% 训练符号数          0中国通信网-无限分享8S3`V_!Deej
% 循环前缀长度        8   (1/16)*T
+H7g/{6O2d)pJ0H ]0% 调制方式            4-QAM
ReH3H Cq$y9C0% 多径信道数          3 中国通信网-无限分享(HF,N1{u;xH
% IFFT Size           128 中国通信网-无限分享`!v['u)fQ
% 信道最大时延        2中国通信网-无限分享%F-CW9\ W|.]I
% --------------------------------------------- %
:g?7~&P$u3J-P(U1W0%                   QAM MODULATION              %
;r r asd6z|0% --------------------------------------------- %
nS0KR2j0YSi|'Md0% Generate the random binary stream for transmit test
p,F}qU;^z\~-y0BitsTx = floor(rand(1,NumLoop*NumSubc)*2);
% Modulate (Generates QAM symbols)中国通信网-无限分享tW6F0W{y/SK
% input: BitsTx(1,NumLoop*NumSubc); output: SymQAM(NumLoop,NumSubc/2)中国通信网-无限分享2w2x/eB4S2@+{
SymQAMtmp = reshape(BitsTx,2,NumLoop*NumSubc/2).';
fM8POZ){ j0SymQAMtmptmp = bi2de(SymQAMtmp,2,'left-msb');
*Yt0{0
%--------------------------------------------------------------------
X{ic}0% 函数说明:
m4Dh*T cDG0% bin2dec(binarystr) interprets the binary string binarystr and returns the中国通信网-无限分享Gt
ZV8A
% equivalent decimal number.
F}~yS0pQT"FRl0%   bi2de是把列向量的每一个元素都由2进制变为10进制
n
|L `&\$?0%  D = BI2DE(...,MSBFLAG) uses MSBFLAG to determine the input -无限分享v:z7YKI
K
U;r Mj_
%     MSBFLAG has tw