WI-FI 802.11速度取决于距离 [英] WI-FI 802.11 speed depending on distance

问题描述

有人可以帮我写一份包含802.11 WI-FI不同标准的理论精确速度取决于距离(1到10米)的文档吗? 例如，如果有一个数学方程式给出速度随距离降低的方式，或者是一个软件工具，或者是一个给出速度如何每1米降低速度的表格，例如，我需要一些非常精确的信息. 谢谢你:)

can someone help me with a document containing the theoretical exact speed of different standards of 802.11 WI-FI depending on the distance (1 to 10 meters) ? like if there is an mathematical equation that gives how the speed decrease with distance ,or software tool, or a table that gives how speed decreases every 1 meter for example , i need something very exact. THank you :)

推荐答案

由于以下事实，消除伴随因素的纯距离效应可忽略不计:

Pure distance effect while dismissing accompanying factors is negligeble due to the following facts:

1. 假设传输是连续的-数据连续到达目标，则只有一个初始延迟，直到第一个数据包到达目的地为止(如果传输不连续，则谈论速度没有太大意义-显然，则无法达到最大速度).
数据是在以光速传播的无线电波上传输的. 802.11速度限制远低于光速所施加的理论限制-因此几乎不存在任何距离影响.

1. Assuming the transmission is continuous - the data arrives continuously to the target, there is only an initial latency till the first packet reaches the destination (if the transmission isn't continuous, there is not much sense in talking about speed - clearly, the max speed isn't reached in this case).
2. Data is carried upon radio waves which travel at the speed of light. 802.11 speed limit is much lower than theoretical limit imposed by the speed of light - therefore any distance impact is practically non-existant.

但是，应该考虑的事实是，随着距离的增加，对无线链路的干扰会显着增加，从而导致速度降低.但这又是距离的副作用(例如，如果发送器和接收器都密封在法拉第笼中，则可以消除这种情况.)

What should be taken into account, though, is the fact that with distance the interferences to the wireless link grow significantly, leading to decrease in speed. But again, it's a side effect of distance (e.g., it's eliminated if both the transmitter and the receiver are sealed in Faraday cage).

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