监管对电视白空间实施的影响在巴西:使用5G-RANGE系统的实验室和现场分析
Matheus Sêda Borsato Cunha1, Juliano Silveira Ferreira1, Anderson Reis Rufino Marins1
1National Institute of Telecommunication, Santa Rita do Sapucaí 37540-000, Brazil.
Sensors (Basel, Switzerland)
|April 26, 2025
概括
电视白色空间 (TVWS) 为偏远地区提供有前途的远程互联网接入. 现场测试证实,使用GFDM的5G-RANGE等TVWS系统可以与数字电视共存,从而实现高效的连接,并有可能进行监管调整.
科学领域:
- 无线通信无线通信
- 频谱管理 频谱管理
- 数字广播数字广播.
背景情况:
- 电视白色空间 (TVWS) 是未充分利用的广播频谱频段.
- 农村和偏远地区的互联网接入仍然是一个重大挑战.
- 使用GFDM的5G-RANGE等新兴技术为连接提供了潜在的解决方案.
研究的目的:
- 评估TVWS对巴西互联网接入的可行性和监管影响.
- 评估TVWS信号与现有数字电视 (DTV) 系统的共存情况.
- 分析TVWS在农村和偏远环境中的性能.
主要方法:
- 对TVWS信号共存进行了实验室和实地测试.
- 应用了5G-RANGE系统,使用通用频率分割多重复合 (GFDM).
- 在TVWS和集成服务数字广播-地面 (ISDB-T) 信号之间测量保护比 (PR).
主要成果:
- 对于5G-RANGE/GFDM,5G-RANGE/GFDM的确定最低PR值为-31.38dB (通道n-1) 和-33.24dB (通道n+1),表明带外排放低.
- 实地测试验证实了实验室发现,最差的干扰PR记录在-30.2dB (通道n-1).
- 在14.7公里的24MHz带宽上达到96Mbps,功率限制为1Wp,证明了有效的覆盖范围.
结论:
- 以5G-RANGE/GFDM为例的TVWS技术可用于扩大巴西服务不足地区的互联网接入.
- 在TVWS和ISDB-T之间成功共存,这对于频谱共享至关重要.
- 建议进行监管调整,以促进TVWS的广泛部署和增强数字化包容性.
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