%File:?c9_MCBFSK.m
clear?all
snrdB_min=0;?snrdB_max=12;???%SNR（in?dB）limits
snrdB?=?snrdB_min:1:snrdB_max;
Nsymbols?=?input（‘Enter?number?of?symbols?>?‘）;
snr?=?10.^（snrdB/10）;???????%?convert?from?dB
h?=?waitbar（0‘SNR?Iteration‘）;
len_snr?=?length（snrdB）;
for?j=1:len_snr??????????????%invrement?SNR
????waitbar（j/len_snr）
????sigma?=?sqrt（1/（2*snr（j）））;???%noise?standart?deviation
????error_count=0;
????for?k=1:Nsymbols???????%simulation?loop?begins
????????d?=?round（rand（1））;?????%data
????????if?d?==0
????????????x_d?=?1;
????????????x_q?=?0;
????????else
????????????x_d?=?0;
????????????x_q?=?1;
????????end
????????n_d?=?sigma*randn（1）;?????%noise
????????n_q?=?sigma*randn（1）;
????????y_d?=?x_d+n_d;????%receiver?input
????????y_q?=?x_q+n_q;
????????if?y_d>y_q
????????????d_est?=?0;
????????else
????????????d_est?=?1;
????????end
????????if?（d_est?~=?d）
????????????error_count?=?error_count+1;??%error?counter
????????end
????end?%simulation?loop?ends
????errors（j）?=?error_count;???%store?error?count?for?plot
end
close（h）
ber_sim?=?errors/Nsymbols;?????%BER?estimate
ber_theor?=?erfc（sqrt（snr/2））/2;
semilogy（snrdBber_theorsnrdBber_sim‘o‘）
axis（[snrdB_min?snrdB_max?0.0001?1]）
xlabel（‘SNR?in?dB‘）
ylabel（‘BER‘）
legend（‘Theoretical‘‘Simulation‘）
%End?of?script?file

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

?????文件???????1161??2008-10-17?15:43??BPSK\BPSK.m

?????文件???????1178??2008-10-17?14:22??BPSK\BPSK.asv

?????文件???????1331??2008-10-18?13:25??BFSK\bfsk.m

?????文件???????7959??2008-10-17?15:47??BFSK\nsymbols100000.fig

?????文件???????7949??2008-10-17?15:49??BFSK\nsymbols10000.fig

?????文件???????7915??2008-10-17?15:49??BFSK\nsymbols1000.fig

?????文件???????7888??2008-10-17?15:50??BFSK\nsymbols100.fig

?????文件??????18266??2008-10-17?16:11??BFSK\nsymbols100.jpg

?????文件??????18199??2008-10-17?16:11??BFSK\nsymbols1000.jpg

?????文件??????17983??2008-10-17?16:11??BFSK\nsymbols10000.jpg

?????文件??????18004??2008-10-17?16:11??BFSK\nsymbols100000.jpg

?????文件???????1331??2008-10-18?13:25??BFSK\bfsk.txt

?????目錄??????????0??2008-10-15?16:40??BPSK

?????目錄??????????0??2008-10-17?15:14??BFSK

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

???????????????109164????????????????????14