802.11n中的“stream”是什么意思？是不是与天线的数量相同？

dalanxiansheng

802.11n中的“stream”是什么意思？atheros的产品介绍中如此描述：Each stream offers up to 150 Mbps PHY rate of bandwidth. Currently, Qualcomm Atheros offers solutions in 1-, 2- and 3-stream configurations. While a 4-stream configuration could yield up to a 600 Mbps PHY rate, we currently do not envision a commercially viable 4-stream option that provides greater real-world performance than 3-stream.


如何判断一个AP支持多少个stream？是不是一个stream就需要一根天线？有没有哪位兄弟实测过不同stream的AP所达到的真实带宽？