中频段无线通信系统仿真：简明描述 (Simulating Mediumband Wireless Communication Systems: A Concise Description)

In this paper, we describe the necessary procedures for accurately simulating digital wireless communication systems operating in the mediumband, aimed at both beginners and experts. In the research literature, digital wireless communication systems are typically simulated in the discrete-time complex baseband domain, where pulse shaping, upconversion, mixing, carrier synchronization, and symbol timing synchronization are often ignored. These assumptions are indeed sufficient in most cases, but to capture the essence of communication in the mediumband, certain physical layer (PHY) operations should be simulated in detail. In this paper, we concisely describe how to simulate a mediumband wireless communication scenario from a single transmitter (TX) to a single receiver (RX) in MATLAB, elaborating the operation of key PHY subsystems. The approach described here ensures that the simulated system captures the delicate dynamics of mediumband wireless communication, including the effect of deep fading avoidance.

翻译：本文描述了准确仿真中频段数字无线通信系统所需的基本流程，旨在同时服务于初学者与专家。在研究文献中，数字无线通信系统通常在离散时间复基带域进行仿真，其中脉冲成形、上变频、混频、载波同步与符号定时同步等环节常被忽略。这些假设在多数情况下确实足够，但若要捕捉中频段通信的本质特性，则需对部分物理层（PHY）操作进行精细仿真。本文简明阐述了如何在MATLAB环境中仿真从单一发射机（TX）到单一接收机（RX）的中频段无线通信场景，并详细说明了关键PHY子系统的运作机制。所述方法能确保仿真系统准确捕捉中频段无线通信的精细动态特性，包括深度衰落规避效应。