clear?all;
close?all;
clc

Nfft=2048;
Ng=Nfft/4;
Nofdm=Nfft+Ng;
Nsym=1;
Nps=2;
Np=Nfft/Nps;
Nd=Nfft-Np;
Nbps=4;
M=2^Nbps;
mod_object?=?modem.qammod（‘M‘M?‘SymbolOrder‘‘gray‘）;
demod_object?=?modem.qamdemod（‘M‘M?‘SymbolOrder‘‘gray‘）;

Es=1;
A=sqrt（3/2/（M-1）*Es）;
fs?=?9.6e6;
ts?=?1/fs;
sq2=sqrt（2）;
snr_db?=?0:2:20;
for?mm?=?1:length（snr_db）
????
????SNR?=?snr_db（mm）;
????rand（‘seed‘1）;?randn（‘seed‘1）;
????MSE?=?zeros（16）;?nose?=?0;
????for?nsym=1:Nsym
????????
????????Xp?=?2*（randn（1Np）>0）-1;????%?BPSK導(dǎo)頻序列產(chǎn)生
????????msgint=randi（1Nfft-NpM）;???%?用戶數(shù)據(jù)生成
????????Data?=?modulate（mod_objectmsgint）*A;
????????ip?=?0;
????????pilot_loc?=?[];
????????for?k=1:Nfft
????????????if?mod（kNps）==1
????????????????X（k）?=?Xp（floor（k/Nps）+1）;
????????????????p

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????2952??2017-06-21?10:18??不同信道估計(jì)\Diff_Est.m

?????文件??????24126??2017-06-21?10:19??不同信道估計(jì)\diiff_est1.fig

?????文件????????595??2017-06-14?08:57??不同信道估計(jì)\interpolate1.m

?????文件????????636??2017-06-16?12:51??不同信道估計(jì)\LS_CE.m

?????文件???????1090??2017-06-16?12:51??不同信道估計(jì)\MMSE_CE.m

?????文件??????24118??2017-06-12?23:51??不同信道估計(jì)\不同信道估計(jì).fig

?????目錄??????????0??2018-02-25?10:48??不同信道估計(jì)

-----------?---------??----------?-----??----

????????????????53517????????????????????7