Cisco Cisco Aironet 1600i Access Point 기술 참조
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Cisco Aironet Series 1600/2600/3600 Access Point Deployment Guide, Release 7.5
802.11n Primer - Understanding Spatial Streams
Figure 54
ClientLink 2.0
With beamforming technology, changing the timing of two transmitters creates a stronger signal for the
receiver, e.g, a client device. This is referred to as constructive interference. Sometimes, however, the
opposite happens and the signals cancel each other out. This is called destructive interference. Refer to
receiver, e.g, a client device. This is referred to as constructive interference. Sometimes, however, the
opposite happens and the signals cancel each other out. This is called destructive interference. Refer to
Figure 55
Beamforming (constructive and destructive interference)
provides a visual comparison of ClientLink 1.0, using 1 spatial stream, and ClientLink 2.0,
using 3 spatial streams. Unlike the AP 3500, the AP 3600 provides multiple spatial streams using four
transceivers for even greater performance. AP 3600 can beamform to all 802.11a/g and 802.11n 1, 2 and
3 spatial stream clients. The signal is x3 as each stream is beamformed.
transceivers for even greater performance. AP 3600 can beamform to all 802.11a/g and 802.11n 1, 2 and
3 spatial stream clients. The signal is x3 as each stream is beamformed.