Simulating Mediumband Wireless Communication Systems: A Concise Description
To address physical-layer modeling distortions and the inability to accurately capture deep-fading mitigation effects in mid-band digital wireless communication system simulations, this paper proposes a comprehensive end-to-end physical-layer modeling framework for the mid-band. Departing from conventional baseband simplifications, it establishes, for the first time, a unified discrete-time complex baseband model that jointly captures pulse shaping, up/down-conversion, mixing, carrier synchronization, and symbol timing recovery. Implemented in MATLAB for a single-input single-output (SISO) system, the framework demonstrates that temporal alignment and frequency-offset coupling among modules critically govern deep-fading mitigation behavior. The proposed approach significantly enhances simulation fidelity and interpretability for mid-band systems, offering both pedagogical clarity and engineering practicality. It provides a high-fidelity platform for PHY-layer algorithm design and performance evaluation.