fs?=?12e6;?%采樣頻率
ts?=?1/fs;?
num?=?2.5e6;??%數(shù)據(jù)長(zhǎng)度
SNR?=?-15;
real_fc?=?3563000;?%實(shí)信號(hào)頻率
data?=?sin（2*pi*real_fc*（0:num-1）*ts+pi/4）+sqrt（10^（SNR/10））*randn（1num）;?%科斯塔斯環(huán)的輸入信號(hào)
fc?=?3562800;?%本地頻率
?
n?=?fs/1000;?%累積時(shí)間為1ms
nn?=?[0:n-1];
nf?=?floor（length（data）/n）;%?將輸入數(shù)據(jù)分成1ms的多個(gè)數(shù)據(jù)塊
wfc?=?2*pi*fc;??%本地信號(hào)
phi_prv?=?0;
temp?=?0;
frame?=?0;
carrier_phase?=?0;
phase?=?0;
?
%環(huán)路濾波器的參數(shù)
c1?=?153.7130;
c2?=?6.1498;

for?frame=1:nf?
%?產(chǎn)生本地的sin和cos函數(shù)
expcol?=?exp（j*（wfc*ts*nn+phase））;
sine?=?imag（expcol）;???
cosine?=?real（expcol）;

x?=?data（（1:n）+（（frame-1）*n））;
%將數(shù)據(jù)轉(zhuǎn)換到基帶
x_sine?=?x.*sine;
x_cosine?=?x.*cosine;
?
Q?=?sum（x_sine）;??????%經(jīng)過(guò)濾波器
I?=?sum（x_cosine）;
phase_discri（frame）?=?atan（Q/I）;???%得到鎖相環(huán)的輸入
?
%鎖相環(huán)
dfrq?=?c1*phase_discri（frame）+temp;?%經(jīng)過(guò)環(huán)路濾波器
temp?=?temp+

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2007-10-09?01:49??Verilog代碼\
?????目錄???????????0??2007-10-09?01:02??Verilog代碼\c10\
?????目錄???????????0??2007-10-09?00:56??Verilog代碼\c10\10-2\
?????文件????????1254??2007-08-06?20:49??Verilog代碼\c10\10-2\mult.xco
?????文件????????1236??2007-08-06?21:06??Verilog代碼\c10\10-2\mydds.xco
?????文件????????1871??2007-08-07?09:47??Verilog代碼\c10\10-2\square_syn.v
?????目錄???????????0??2007-10-09?00:59??Verilog代碼\c10\10-4\
?????文件?????????800??2007-08-09?11:26??Verilog代碼\c10\10-4\coastas_dds.v
?????文件?????????830??2007-10-07?14:40??Verilog代碼\c10\10-4\costas_lf.v
?????文件????????1589??2007-08-09?11:36??Verilog代碼\c10\10-4\costas_loop.v
?????文件?????????780??2007-08-09?11:31??Verilog代碼\c10\10-4\costas_lpf.v
?????文件????????1146??2007-10-07?14:21??Verilog代碼\c10\10-4\costas_mult.v
?????文件?????????811??2007-08-09?10:53??Verilog代碼\c10\10-4\err_mult.v
?????文件????????1225??2007-08-09?09:49??Verilog代碼\c10\10-4\fir_lpf.xco
?????文件????????1254??2007-08-06?20:49??Verilog代碼\c10\10-4\mult.xco
?????文件????????1246??2007-08-09?11:10??Verilog代碼\c10\10-4\my_dds.xco
?????目錄???????????0??2007-10-09?01:01??Verilog代碼\c10\10-6\
?????文件????????1132??2007-09-25?19:46??Verilog代碼\c10\10-6\dearly_sub.v
?????文件????????1632??2007-09-25?19:19??Verilog代碼\c10\10-6\dedds.v
?????文件????????1396??2007-09-26?01:21??Verilog代碼\c10\10-6\delay_early_gate.v
?????文件????????1247??2007-09-25?10:58??Verilog代碼\c10\10-6\de_mult.xco
?????文件????????1240??2007-09-25?15:12??Verilog代碼\c10\10-6\eddds.xco
?????文件????????1149??2007-09-25?14:46??Verilog代碼\c10\10-6\iir.v
?????文件????????1128??2007-09-25?15:00??Verilog代碼\c10\10-6\iir1.v
?????目錄???????????0??2007-10-09?01:03??Verilog代碼\c10\10-8\
?????文件????????1979??2007-09-29?14:07??Verilog代碼\c10\10-8\baker.v
?????目錄???????????0??2007-10-09?01:16??Verilog代碼\c11\
?????目錄???????????0??2007-10-09?01:14??Verilog代碼\c11\11-10\
?????文件????????1023??2007-09-12?15:55??Verilog代碼\c11\11-10\div16.xco
?????文件????????4682??2007-10-02?00:23??Verilog代碼\c11\11-10\fir_rls.v
?????文件????????1247??2007-09-30?00:58??Verilog代碼\c11\11-10\rlsmult.xco
............此處省略271個(gè)文件信息