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多频段数字光纤分布式天线系统

Multi-band Digital Optical Fiber Distribution Antenna System

Research on Wireless Communication / 2021,3(2): 1-8 / 2021-03-11 1114 826

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• Authors: 欧秀平     
• Information:

  广州埃信电信设备有限公司，广州

• Keywords: 分布式天线；数字光纤；多频段
• Distribution antenna system; Digital optical fiber; Multi-band frequency
• Abstract: 与传统的模拟光纤分布系统相比，数字光纤分布系统具有更加灵活的性能，能显著增大拉远距离，降低上行噪声叠加对基站的影响，同时也可兼容千兆以太网数据透传。本文详细介绍了一款改进的多频段数字光纤分布式天线系统，用以代替传统的模拟光纤分布系统，以解决目前多频率、多模式、多运营商、大带宽条件下，无线网络覆盖的技术难题。本系统可实现多频段工作，能应用于5GNR、CDMA2000、WCDMA、TD-LTE、FDD-LTE、GSM 等常用制式。本文通过研究数据压缩功能来提高数据传输带宽，采用数字预失真技术及削峰技术来提高射频功放的效率，达到降低运营成本，同时提高共享能力的目的。
• Compared with the traditional analog optical fiber distribution system, the digital optical fiber distribution system has more flexible performance, it can significantly increase the pull distance, reduce the impact of uplink noise superposition on the base station, and can also be compatible with Gigabit Ethernet data transparent transmission. This paper details an improved multi-band digital optical fiber distribution antenna system. Replace the traditional analog optical fiber system to solve the current technical problems of wireless network coverage under the conditions of multiple frequencies, multiple modes, multiple operators, and large bandwidth. This system can achieve multi-frequency operation. It is a wireless coverage device that meets current applications in complex environments. It can be used in common standards such as 5GNR, CDMA2000, WCDMA, TD-LTE, FDD-LTE, GSM, etc. This paper studies the data compression function to improve the data transmission bandwidth, and used the digital pre-distortion technology and peak clipping technology to improve the efficiency of RF power amplifier. As a result, this system reduces operation and maintenance costs, and improves sharing capabilities.
• DOI: https://doi.org/10.35534/rwc.0302006
• Cite: 欧秀平．多频段数字光纤分布式天线系统［J］．无线通信研究，2021，3（2）：1-8．