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GSM技术特点包括频谱效率高、容量效率高等
GSM技术特点包括频谱效率高、容量效率高等
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所属报告:
【研报】通信行业深度报告:5G+时代星链计划和6G齐闪耀-210316(31页).pdf
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国内不同轨道交通所使用的列控系统ZPW-2000系列移频ZPW-2000系列移频车地通信方式GSM-R
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行业数据
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GSM-R主要应用场景
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GSM 即全球移动通信系统,主要由移动台(MS)、基地台系统(BSS)、移动服务交换中心(MSC)、网络维护运营中心(OMC)和资料库(Database)-HLR、VLR、AUC、EIR 组成。在 GSM Phase2+阶段中,采用更密集的频率复用、多复用、多重复用结构技术,引入智能天线技术、双频段等技术,有效地克服了随着业务量剧增所引发的 GSM 系统容量不足的缺陷;自适应语音编码(AMR)技术的应用,大大提高了系统通话质量;GPRs/EDGE 技术的引入,使 GSM 与计算机通信/Internet 有机相结合,数据传送速率可达 115/384kbit/s,从而使 GSM 功能得到不断增强,初步具备了支持多媒体业务的能力。尽管 2G 技术在发展中不断得到完善,但随着用户规模和网络规模的不断扩大,频率资源己接近枯竭,语音质量不能达到用户满意的标准,数据通信速率太低,无法在真正意义上满足移动多媒体业务的需求。
行业数据
原图定位
当前图表所属:
【研报】通信行业深度报告:5G+时代星链计划和6G齐闪耀-210316(31页).pdf
OFDM技术的优势包括杂度低、频谱效率高等
4G移动通信带来更快的数据传输速率
LTE技术目标包括容量提升、覆盖增强、移动性提高等
3G系统的通信标准共有WCDMA,CDMA2000和TD-SCDMA三大分支
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