| 摘要: |
| 本文讨论一种分区覆盖的广域通信系统-多基站同播通信系统，介绍了同播系统的特点，阐述了同播系统信号失真的机理和消除信号失真的方法。对基站发射频率的一致性、调制信号的幅频特性、相频特性的差异以及CTCSS信号对同播系统的影响进行了分析，并对这些影响因数给出了具体的要求及实现方法，本文还详细介绍了同播系统优化调节的方法及步骤。 |
| 关键词: 广域通信系统 多基站同播 分区覆盖 |
| DOI：10.3969/j.issn.1001-893X. |
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| 基金项目: |
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| Multi- site Simulcast Communication System Design |
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| Abstract: |
| This paper presents a cellular-coverage wide-area communication system (multi-site simulcast communication system) and its features, expatiates the mechanism of simulcast system signal distortion and the method to discriminate it. The influences of the constancy of base station transmitted frequencies, the amplitude-frequency and the phase-frequency characteristic differences of modulating signal and the CTCSS signal on the simulcast system are also analyzed and detailed specification and realization method are also given to those factors. Finally, methods and steps for optimizing simulcast system are introduced. |
| Key words: Wide-area communication system,Multi-site simulcast,Design, |
《电讯技术》编辑部 