Hi Everybody,
Is anyone familiar with the term signal smoothing in IEEE 802.11n? What does it mean? How many signal smoothing techniques are there? \which one is used in 802.11n? If you can provide references that would be great. Thanks
Hi
IEEE 802.11n-2009, commonly shortened to 802.11n, is a wireless-networking standard that uses multiple antennas to increase data rates. Sometimes referred to as MIMO, which stands for "multiple input and multiple output", it is an amendment to the IEEE 802.11-2007 wireless-networking standard. Its purpose is to improve network throughput over the two previous standards—802.11a and 802.11g—with a significant increase in the maximum net data ratefrom 54 Mbit/s to 600 Mbit/s (slightly higher gross bit rate including for example error-correction codes, and slightly lower maximum throughput) with the use of four spatial streams at a channel width of 40 MHz.[1][2] 802.11n standardized support for multiple-input multiple-output, frame aggregation, and security improvements, among other features. It can be used in the 2.4 GHz or 5 GHz frequency bands
In general smoothing relates to removing high frequency components from the signal. This results interpolation of missing data, or making data a bit more well-behaved. Hence rapid transitions don't mess feedback loops of control systems, for instance, when applied. This is in general, 802.11n most likely applies smoothing for these reasons ... Maybe somebody can add the missing details.
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