06-18-2016 11:19 PM - edited 07-05-2021 05:15 AM
Hi,
What is the difference between ofdm rate vs mcs rate ?
Thanks
06-19-2016 02:01 PM
OFDM is the modulation technique used in 802.11a ,802.11g ,802.11n or 802.11ac. If you need good understanding about OFDM refer below
https://www.cwnp.com/understanding-ofdm-part-1
https://www.cwnp.com/understanding-ofdm-part-2
https://www.cwnp.com/understanding-ofdm-part-3
https://www.cwnp.com/understanding-ofdm-part-4
If you talk about OFDM rate, I think you refer to the data rates 6,9,12,18,24,36,48,54 Mbps values.
MCS rates are used in 802.11n & 802.11ac. Refer below for those values
Below page also gives what RSSI & SNR you should have to achieve these MCS rates.
http://www.revolutionwifi.net/revolutionwifi/2014/09/wi-fi-snr-to-mcs-data-rate-mapping.html
HTH
Rasika
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06-19-2016 05:10 PM
Hi,
what is the relation between theses datarate and mcs inidex .
How would you read the mcsindex ?
Thanks
06-19-2016 07:58 PM
Hi
Refer below to see what data rates relate to each MCS index value.
HTH
Rasika
06-20-2016 12:58 AM
Hi,
If i am getting a data rate (n device ) like "6,9,12,18,24,36,48,54" Means i am not getting 802.11n data rate ?
Thanks
06-20-2016 04:15 AM
Yes, you are not.
to get 802.11n data rates below need to fulfil
1. SSID should have either no security (open) or WPA2 with AES encryption (either PSK or 802.1X)
2. WMM should be enabled (either Allowed or Required under WLAN QoS tab)
HTH
Rasika
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06-20-2016 12:10 PM
Hi,
What is the difference between the data rate which is shown in the beacon fram and the data rate which is shown in the encrypted data frame
Ack Frame
Encrypted Data Frame
Thanks
06-21-2016 01:14 AM
Management Frames are sent lowest mandatory rates configured. In your set up 12Mbps might configure as mandatory.
Data frames can be sent any supported data rates (including MCS). According to the value 13Mbps, it is MCS1 with 20MHz channel width setting.
HTH
Rasika
*** Pls rate all useful responses ***
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