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分集技术简略
2022-07-28 13:25:00 【Micro_ET】
分集技术的应用是为了减缓信号衰落的影响,一个无线信号的稳定性决定了设备的可靠性,而在自然环境中各种障碍物的影响,使得发射的无线信号产生慢衰落和快衰落的现象,使用分集的方式可以增加信号的强度,使接收设备更好的解调出所需的信号,分集一个是分散传输,及发射信号的方式是分散发射,在接收端形成多个独立性强且携带同一信息的信号,另一个是集中处理,把多个独立的信号进行合并以增强信号的传输质量,分集的方式有宏分集即站点分集,微分集即通信系统中的分集,宏分集应对的是慢衰落,微分集应对的是快衰落,微分集还可分为空间、时间、频率、极化、角度。场分量等六种分集方式。合并的方式有最大选择、最大比值、等增益三种。仅供参考!
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