Research On The Realization Of The Analog To Information Converter

For security reasons,ratio is often used to command or deploy the army in the militarycommunications. It is important to the electric source, sometimes it even can affect the result of themodern warfare. Of course,the sender will chose a safe way,such as Ultra-Wideband signal,Hopsignal and burst signal,to avoid of being tapped. By the traditional Nyquist theory,the sample rateshould be at least two times of the signal bandwidth, then in terms of Ultra-Wideband hop signal, itis hard to sample and treat the mass sample data.Sample the signal first to get the digital signal and then compress it to filter the redundant databy the Nyquist theory. It is waste for hardware source.Compressive Sampling(CS) theory can breakthe restriction of the Nyquist theory by sample and compress the signal at the same time.It samplesat low rate,gets less information data in CS.The original signal will be reconstructed by solving aoptimization problem.CS is widely used in Ultra-Wideband communication field and imagepricessing field. The Analog to Information Converter(AIC) which based on CS makes CSpractical.AIC can replace the traditional ADC to sample the high rate analog signal at lower rate andget the information we want. With the information we sense,we can reconstruct the analog signal,avioding the bottleneck of the traditional Nyquist theory. It is used to sense the high-frequencyanalog signal,so the AIC must be real-time. It also should be good at multiplication to complete thematrix multiplication.There are three parts in this paper. The first part is basic. In this part , the fundamentals of CS isintroduced. We must get it before we study the AIC. We also sim with the restruction algorithmbased on the sparse decompression.,including BP,OMP,StOMP.The superiority and Insufficient ofeach algorithm is get. In second part ,we introduce three AICs,including modulation AIC,parallelAIC and segmented AIC. The performance and characteristic of each type of AIC is get from thesimulation. The third part is the main part. A hardware implemention for the modulation AIC isproposed. The maximum frequency is obtain with the register-to-register mode. And then we analyzethe influence to the hardware system of the interference, because each sub-system will lead into theinterference inevitable. At last we propose a hardware circuit diagram to the OMP restructionalgorithm.It avoids square roots with the clever matrix transform.With this program,the complexityof the circuit is cut down significant.