【正文】 abs(fft(x1))),title(39。 %差分碼編碼規(guī)則 b(n+1)是 x1(n)與 b(n)相異或 if b(n+1)==1 Sig(n)=1。 else O_Y(1)=0。) axis([0,100,inf,inf]) subplot(413),plot(x1),title(39。)。) xlabel(39。Fc=64。 for k=1:length(Sig) c((k1)*Rate+1)=Sig(k)。measured39。) subplot(212),plot(abs(fft(Num))),title(39。) subplot(212),plot(abs(fft(R_Y))),title(39。) subplot(212),plot(abs(fft(RY1))),title(39。) subplot(212),plot(abs(fft(R_Y))),title(39。) subplot(212),plot(abs(fft(RY1))),title(39。經(jīng)過了兩周的努力我終于完成了此 次課程設(shè)計。s ancient indigenous religion, while Du jiang yan is considered to be the oldest functioning watercontrol project in the world. Chengdu ranked third in tourist facilities, management and services among 60 Chinese cities in a customer satisfaction survey released last year. But, Li added that efforts are still needed to develop more tourism products, improve English services and provide accurate translation of traffic signs and scenic billboards. Zhao Yun, chairwoman of Bri tish Chamber of Commerce Southwest China, told China Daily that his colleagues found the policy very convenient. A British client once flew here and stayed for just one day to check her ordered goods, she said. Zhao was born in Shanxi province, but she has lived in Chengdu for more than 10 years. My life was like a running race moving from place to place. I also lived in Beijing and Shanghai before, she said. But Chengdu is a place that you never want to leave once settling down. It is now my second hometown, she said. If the environment is further improved, the city will attract more people to visit and live, with the 72hour visafree policy and pelling conditions in transportation, culture, climate and cuisine, he said. Foreigners also gave positive feedback on the policy. A spokesman from Dell Inc said the pany has a global hub of operation in Chengdu, so the three day visa has an immediate and positive influence on the pany39。s public security bureau shows some 100 foreign visitors enjoyed the 72hour policy by the end of March, most of them from the United States, the United Kingdom and Germany. Chengdu also reported robust growth in its overall tourist industry last year. Official statistics show that it received some 150 million tourists last year, an increase of 28 percent from 2021. Around million came from abroad, an increase of 12 percent. Total revenue from tourism surpassed 133 billion yuan ($). During his visit to Kazakhstan in September, Chinese President Xi Jinping proposed that China and Central Asia join hands to build a Silk Road economic belt to boost cooperation. The idea has been widely echoed in Central Asian countries, being an encouraging blueprint for Chinese areas along the Silk Road that has linked Asia and Europe for more than 2,000 years. In the next three weeks, China Daily reporters will travel through the belt in China and in Kazakhstan, Uzbekistan and Turkey. They will show the progress and expectations of the countries, businesses and peoples on the route. Shaanxi the start of the ancient Silk Road has positioned itself as the new starting point for the development of the Silk Road Economic Belt, which will strengthen China39。通過此次課程設(shè)計讓我明白了，要對自己有信心。) end 心得 體會 通過這次課程設(shè)計，我掌握了 matlab 的使用，學(xué)會了通過應(yīng)用軟件仿真來實現(xiàn)各種通信系統(tǒng)的設(shè)計， 在 加強了動手能力和學(xué)業(yè)技能 的同時，對以后的學(xué)習(xí)和工作也有 很大的幫助。) figure,subplot(211),plot(RYc),title(39。) elseif i==1 figure,subplot(211),plot(Sig),title(39。) figure,subplot(211),plot(RYc),title(39。) figure,subplot(211),plot(Sig),title(39。 %加上高斯白噪聲 %解調(diào) RYc=R_Y.*cos(2*pi*Fc/Fs*n)。 Num=rcosfir(Alfa,N_Filter,Rate,Tc,39。sigv=16。) ylabel(39。2psk39。) axis([0,100,]) subplot(414),plot(abs(fft(x1))),title(39。 if O_a(n)==1 O_Y(n)=1。 end end R_X=runup(Sig,SNR,i)。) axis([0,100,inf,inf]) else i=1。 end end if SNR==0 figure,subplot(411),plot(R_X),title(3