Simulation of 802.11b PHY Layer Using Simulink Model

Simulating the 802.11b physical layer using a Simulink model in MATLAB is highly valuable for testing critical WiFi performance indicators. This simulation approach enables comprehensive analysis and understanding of wireless LAN performance characteristics. The model implements key 802.11b PHY layer components including Barker code spreading, CCK modulation, and DBPSK/DQPSK schemes through MATLAB's Communication Toolbox blocks. Through this simulation framework, we can emulate various channel conditions, interference scenarios, and transmission rates to evaluate system performance metrics such as throughput, transmission latency, and bit error rate. The simulation incorporates channel modeling blocks to simulate multipath fading, AWGN, and interference effects using predefined MATLAB functions. Such testing and analysis facilitate optimization of wireless network design and deployment strategies, ultimately contributing to improved user experience and more reliable wireless connectivity. The model structure typically includes transmitter chains with scrambler, convolutional encoder, and modulator blocks, while receiver chains implement corresponding demodulation and decoding algorithms.