IEEE 802.11ac
Data rates and speed
Several companies are currently offering 802.11ac chipsets with higher modulation rates: MCS-10 and MCS-11 (1024-QAM), supported by Quantenna and Broadcom. Although technically not part of 802.11ac, these new MCS indices are expected to become official in the 802.11ax standard (~2019), the successor to 802.11ac.

IEEE 802.11ac

Section Title: Data rates and speed
Table Section Text: Several companies are currently offering 802.11ac chipsets with higher modulation rates: MCS-10 and MCS-11 (1024-QAM), supported by Quantenna and Broadcom. Although technically not part of 802.11ac, these new MCS indices are expected to become official in the 802.11ax standard (~2019), the successor to 802.11ac.

MCS index	Spatial Streams	Modulation type	Coding rate	Data rate (in Mbit/s)

20 MHz channels	40 MHz channels	80 MHz channels	160 MHz channels

800 ns GI	400 ns GI	800 ns GI	400 ns GI	800 ns GI	400 ns GI	800 ns GI	400 ns GI

0	1	BPSK	1/2	6.5	7.2	13.5	15	29.3	32.5	58.5	65

1	1	QPSK	1/2	13	14.4	27	30	58.5	65	117	130

2	1	QPSK	3/4	19.5	21.7	40.5	45	87.8	97.5	175.5	195

3	1	16-QAM	1/2	26	28.9	54	60	117	130	234	260

4	1	16-QAM	3/4	39	43.3	81	90	175.5	195	351	390

5	1	64-QAM	2/3	52	57.8	108	120	234	260	468	520

6	1	64-QAM	3/4	58.5	65	121.5	135	263.3	292.5	526.5	585

7	1	64-QAM	5/6	65	72.2	135	150	292.5	325	585	650

8	1	256-QAM	3/4	78	86.7	162	180	351	390	702	780

9	1	256-QAM	5/6	N/A	N/A	180	200	390	433.3	780	866.7

0	2	BPSK	1/2	13	14.4	27	30	58.5	65	117	130

1	2	QPSK	1/2	26	28.9	54	60	117	130	234	260

2	2	QPSK	3/4	39	43.3	81	90	175.5	195	351	390

3	2	16-QAM	1/2	52	57.8	108	120	234	260	468	520

4	2	16-QAM	3/4	78	86.7	162	180	351	390	702	780

5	2	64-QAM	2/3	104	115.6	216	240	468	520	936	1040

6	2	64-QAM	3/4	117	130.3	243	270	526.5	585	1053	1170

7	2	64-QAM	5/6	130	144.4	270	300	585	650	1170	1300

8	2	256-QAM	3/4	156	173.3	324	360	702	780	1404	1560

9	2	256-QAM	5/6	N/A	N/A	360	400	780	866.7	1560	1733.4

0	3	BPSK	1/2	19.5	21.7	40.5	45	87.8	97.5	175.5	195

1	3	QPSK	1/2	39	43.3	81	90	175.5	195	351	390

2	3	QPSK	3/4	58.5	65	121.5	135	263.3	292.5	526.5	585

3	3	16-QAM	1/2	78	86.7	162	180	351	390	702	780

4	3	16-QAM	3/4	117	130	243	270	526.5	585	1053	1170

5	3	64-QAM	2/3	156	173.3	324	360	702	780	1404	1560

6	3	64-QAM	3/4	175.5	195	364.5	405	N/A	N/A	1579.5	1755

7	3	64-QAM	5/6	195	216.7	405	450	877.5	975	1755	1950

8	3	256-QAM	3/4	234	260	486	540	1053	1170	2106	2340

9	3	256-QAM	5/6	260	288.9	540	600	1170	1300	2340	2600

0	4	BPSK	1/2	26	28.8	54	60	117.2	130	234	260

1	4	QPSK	1/2	52	57.6	108	120	234	260	468	520

2	4	QPSK	3/4	78	86.8	162	180	351.2	390	702	780

3	4	16-QAM	1/2	104	115.6	216	240	468	520	936	1040

4	4	16-QAM	3/4	156	173.2	324	360	702	780	1404	1560

5	4	64-QAM	2/3	208	231.2	432	480	936	1040	1872	2080

6	4	64-QAM	3/4	234	260	486	540	1053.2	1170	2106	2340

7	4	64-QAM	5/6	260	288.8	540	600	1170	1300	2340	2600

8	4	256-QAM	3/4	312	346.8	648	720	1404	1560	2808	3120

9	4	256-QAM	5/6	N/A	N/A	720	800	1560	1733.2	3120	3466.8

Sentence(s)

Modulation 256-QAM, rate 3/4 and 5/6, were added (vs. 64-QAM, rate 5/6 maximum in 802.11).

final_sentence: Modulation 256-QAM, rate 3/4 and 5/6, were added (vs. 64-QAM, rate 5/6 maximum in 802.11).