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Modulation Coding Schemes, MCS for IEEE 802.11ax

Modulation Coding Schemes, MCS for IEEE 802.11ax


In order to optimise the data throughput for all link conditions, IEEE 802.11ax has a series of defined modulation & coding schemes.

These IEEE 802.11ax modulation and coding schemes range from MCS0 using BPSK for the more difficult links, to MCS11 for high quality links which are able to support the highest data throughput.

Between these two extremes there are the other modulation and coding scheme sets that are able to provide different levels of error correction and differnet forms of modulation. There are also different Guard Interval, GI figures that can be used as well.


IEEE 802.11ax Modulation and coding schemes for single spatial stream
MCS
index
Modulation
type
Coding
rate
Data rate (in Mb/s)
20 MHz channels40 MHz channels80 MHz channels160 MHz channels
1600 ns GI800 ns GI1600 ns GI800 ns GI1600 ns GI800 ns GI1600 ns GI800 ns GI
0BPSK1/288.61617.23436.06872
1QPSK1/21617.23334.46872.1136144
2QPSK3/42425.84951.6102108.1204216
316-QAM1/23334.46568.8136144.1272282
416-QAM3/44951.698103.2204216.2408432
564-QAM2/36568.8130137.6272288.2544576
664-QAM3/47377.4146154.9306324.4613649
764-QAM5/68186.0163172.1340360.3681721
8256-QAM3/498103.2195206.5408432.4817865
9256-QAM5/6108114.7217229.4453480.4907961
101024-QAM3/4122129.0244258.1510540.410211081
111024-QAM5/6135143.4271286.8567600.511341201

Note:
Additional spatial streams multiple the data throughput achievable - above figures are for a single spatial stream.

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