function?bitstream=demoFSK（receivedSignalf1f2fs）?
%FSK解調(diào)程序
%輸入?yún)?shù)，receivedSignal為已調(diào)信號，f1為0的調(diào)制頻率。f2為1的調(diào)制頻率，fs為采樣頻率
%輸出參數(shù)bitstream為解調(diào)后信號
???signal1=receivedSignal;
???
???t=linspace（01fs）;
??
???bitstream1=[];
???c1=[];
???for?i=1:length（signal1）/fs
???????c1=[c1?-cos（2*pi*f1*t）];
???end
????signal2=signal1.*c1;????????????????????????????????????????????????????%與頻率為f1的載波相乘
????[signalbitstream1]=integral（signal2fs）;?????????????????????????%分段積分

?
????bitstream2=[];
????c2=[];
???for?i=1:length（signal1）/fs
???????c2=[c2?cos（2*pi*f2*t）];????????????????????????????????????????????????
???end
????zsignal2=signal1.*c2;???????????????????????????????????????????????????%與頻率為f2的載波相乘
????[zsignalbitstream2]=integral（zsignal2fs）;???????????????????????%分段積分
???
????figure（3）
????subplot（211）;
????plot（1:length（signal2）signal2）;title（‘與頻率為f1的載波相乘后信號‘）;grid?on;???????
????subplot（212）;
????plot（1:length（zsignal2）zsignal2）;title（‘與頻率為f2的載波相乘后信號‘）;grid?on;?
????
????figure（4）
????subplot（211）;
????plot（1:length（signal）signal‘LineWidth‘1.5）;title（‘上支路積分值‘）;grid?on;??????????????????%f1對應(yīng)上支路
????subplot（212）;
????plot（1:length（zsignal）zsignal‘LineWidth‘1.5）;title（‘下支路積分值‘）;grid?on;???????????????%f2對應(yīng)下支路??????????????????????
????????????????????????????????????????????????????
?????????????????????????????????????????????????
???%判決比較上下支路輸出值
????bitstream=[];
???????for?i=1:length（signal1）/fs??????
????????????if?bitstream1（i）???????????????bitstream（i）=1;
????????????else
????????????????bitstream（i）=0;
????????????end
???????end

????
???%輸出解調(diào)信號波形
????bits=[];??????????????????????????
?????for?i=1:length（bitstream）
????????if?bitstream（i）==0
???????????bits1=zeros（1fs）;
????????else?
???????????bits1=ones（1fs）;
????????end
?????bits=[bitsbits1];
????end
????figure（5）
????plot（bits‘LineWidth‘1.5）title（‘解調(diào)后信號‘）grid?on;
????axis（[0fs*length（bitstream）-2.52.5]）;?

end
???

?屬性????????????大小?????日期????時(shí)間???名稱
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?????文件???????2197??2010-07-30?16:45??fskgfsk調(diào)制解調(diào)\fsk\demoFSK.m

?????文件???????2310??2010-07-30?16:46??fskgfsk調(diào)制解調(diào)\fsk\FSKmain.m

?????文件????????321??2010-07-29?11:29??fskgfsk調(diào)制解調(diào)\fsk\gussian.m

?????文件????????592??2010-07-29?12:08??fskgfsk調(diào)制解調(diào)\fsk\integral.m

?????文件????????281??2010-07-29?14:55??fskgfsk調(diào)制解調(diào)\fsk\suiji.m

?????文件?????297984??2010-07-30?14:55??fskgfsk調(diào)制解調(diào)\fskgfsk調(diào)制解調(diào)程序原理.doc

?????文件???????2248??2010-07-30?17:31??fskgfsk調(diào)制解調(diào)\gfsk\demoGFSK.m

?????文件???????2517??2010-07-30?17:29??fskgfsk調(diào)制解調(diào)\gfsk\GFSKmain.m

?????文件????????620??2010-07-30?17:31??fskgfsk調(diào)制解調(diào)\gfsk\glpfsignal.m

?????文件????????321??2010-07-29?14:34??fskgfsk調(diào)制解調(diào)\gfsk\gussian.m

?????文件????????592??2010-07-29?14:33??fskgfsk調(diào)制解調(diào)\gfsk\integral.m

?????文件????????281??2010-07-29?15:02??fskgfsk調(diào)制解調(diào)\gfsk\suiji.m

?????文件????????383??2010-07-30?16:59??fskgfsk調(diào)制解調(diào)\對比fsk?gfsk?功率譜密度\contrast.m

?????文件???????1343??2010-07-30?17:06??fskgfsk調(diào)制解調(diào)\對比fsk?gfsk?功率譜密度\FSKmain.m

?????文件???????1594??2010-07-29?17:57??fskgfsk調(diào)制解調(diào)\對比fsk?gfsk?功率譜密度\GFSKmain.m

?????文件????????389??2010-07-28?16:05??fskgfsk調(diào)制解調(diào)\對比fsk?gfsk?功率譜密度\glpfsignal.m

?????文件????????281??2010-07-29?14:55??fskgfsk調(diào)制解調(diào)\對比fsk?gfsk?功率譜密度\suiji.m

?????目錄??????????0??2013-04-19?16:34??fskgfsk調(diào)制解調(diào)\fsk

?????目錄??????????0??2013-04-19?17:00??fskgfsk調(diào)制解調(diào)\gfsk

?????目錄??????????0??2013-04-19?16:34??fskgfsk調(diào)制解調(diào)\對比fsk?gfsk?功率譜密度

?????目錄??????????0??2013-04-22?10:30??fskgfsk調(diào)制解調(diào)

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???????????????314254????????????????????21