Complete Physical Layer Transmission Scheme for Mobile Communication Systems (WiMAX Scenario)

Design a complete physical layer transmission scheme for mobile communication systems (WiMAX scenario) and implement it using MATLAB programming, meeting the following performance indicators: 1. Data rate requirements: Achieve 60 Mbps at 5 km/hr mobility speed and 10 Mbps at 120 km/hr mobility speed, while maintaining bit error rate Pe ≤ 10^-4 when Eb/No is below 20 dB. This can be implemented through adaptive modulation and coding schemes, where MATLAB code would dynamically adjust modulation orders (QPSK, 16QAM, 64QAM) and coding rates based on channel conditions. 2. Signal bandwidth of 20 MHz operating in the 2 GHz frequency band. The implementation would require proper RF front-end simulation and baseband processing with sampling rates compliant with the 20 MHz bandwidth specification. 3. Channel model: 6-path Rayleigh channel based on COST207 model (reference program multipath_code.zip). The MATLAB implementation should incorporate this channel model using functions like rayleighchan() with appropriate delay profiles and Doppler spectrum settings to simulate mobile environments. Please provide the following results: A. Transceiver block diagram with main parameter settings, including functions and interconnections of all modules at both transmitter and receiver ends. The MATLAB implementation should clearly document the signal processing chain from source coding, channel coding, modulation, up-conversion to demodulation, channel estimation, and error correction. B. Bit error rate simulation curves considering non-ideal synchronization and channel estimation conditions. The code should include practical impairment models for timing recovery, carrier frequency offset, and channel estimation algorithms (such as LMS or MMSE estimators) to demonstrate real-world performance degradation.