This paper discusses the digital generation method for communication IF signals and proposes a concrete implementation resolution and analyzes its technical characteristics.
通过简述多种调制方式中频信号数字产生的基本处理方法，提出了一种具体实施方案，并分析了其技术特点。
Smart antenna has been key technology of the Third Generation Mobile Communication Systems with the character of restraining interferes and aiming at target signals intelligently.
智能天线以其智能化地抑制干扰、对准信号的特点，成为第三代移动通信系统的关键技术。
This paper presents an overview of acoustic communication in coleopterans, focusing on morphology, generation and function of sound signals, acoustic behaviors and applications.
本文就国内外关于甲虫声通讯的研究及应用进行综述。
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