1. Design purpose
Through the basic knowledge of Simulink simulation knowledge, circuit analysis, signal and system learned in this course, design a simple RFID receiver that complies with the ISO/IEC 14443 standard.
2. Design tasks
(1) Basic part
According to the ISO/IEC 14443 standard, the data transmission rate is 106kbps Manchester encoding, and the subcarrier modulation (ASK) frequency is 847kHz for load modulation. In the MATLAB/SIMULINK environment, complete the design of the simple receiver. Specifically include:
(1) Design the decoder circuit corresponding to the Manchester encoder, and give the digital circuit design scheme;
(2) Design the demodulation module of the ASK modulation module, and explain the demodulation principle;
(3) Select AWGN Channel in SIMULINK as the connection module connecting the RFID transmitter and receiver, and analyze the bit error rate of the RFID system. The following is a description of the tool:
- Double-click Error Rate Calculation to change the output data from "port" to "Workspace";
- MATLAB Command Prompt: Enter bertool. The BER analyzer will open, as shown below
- The BER Analyzer application calculates BER as a function of the ratio of energy per bit to noise power spectral density (Eb/N0).
(2) Improve part
Use the simulation model ALOHA and CSMA/CA Packetized Wireless Networks that comes with MATLAB/SIMULINK. The simulation model can be opened with the following command
openExample('comm/ALOHAAndCSMACAPacketizedNetworkExample')On the basis of the simulation example provided, adjust the specific parameters of the simulation module, replace the sending and receiving modules, and complete the simulation design of the data link layer.
3. Course Design Report Requirements
1. cover
2. Design requirements
3. Design process
- Overall scheme block diagram design
- circuit design
- Use MATLAB/SIMULINK software to debug, and give the experimental results required by each task in turn.
4. The harvest and experience of curriculum design