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Just how fast is NV2? Here's a chart.

Posted: Sun Sep 01, 2019 2:49 am
by qamtester
I've really been wanting to answer the question how fast is NV2 compared to 802.11 advertised speeds? I've built a lab and tested this out with 1 AP and 2 clients. Client1 and the AP are on the 192.168.1.0/30 network, and Client2 and the AP are on the 192.168.2.0/30 network. I then setup a udp traffic generator to go from Client1 to Client2 across the wireless network that the AP provides. I maintained CCQ percentages above 95% through my whole tests. Here are the results below with all devices running RouterOS 6.45.5 with upgraded firmware. All tests were conducted with Groove52HPnD on the 20MHz 5ghz channel (1:1x1 data stream using 802.11n hardware). As new RouterOS versions come out, I'll add new charts. I also used a pre-shared key for security to demonstrate the expected performance hit of encrypting your wireless traffic (you should turn this on). I also enabled AP and clients noise immunity, and I used dynamic downlink 50%. Results below, shown in Mbps aggregate.
HT MCS    Modulation    802.11n Reported Rate    NV2 Period Auto    NV2 Period 2ms    NV2 Period 3ms    NV2 Period 4ms    NV2 Period 5ms    NV2 Period 10ms
0         BPSK 1/2      7.2                      5.2                4.8               5.2               5.4               5.6               6
1         QPSK 1/2      14.4                     11.2               9.6                                                                     
2         QPSK 3/4      21.6                     17.2               14.6                                                                    
3         16-QAM 1/2    28.8                     23.2               19.6              22                23.2              24                25.2
4         16-QAM 3/4    43.3                     35.2               29.6              33.2              35                36.2              38.4
5         64-QAM 2/3    57.7                     47.2               39.6                                                                    
6         64-QAM 3/4    65                       52.8               44.8                                                                    
7         64-QAM 5/6    72.2                     59                 50.4              56.2              59.2              60.6              63.6

Re: Just how fast is NV2? Here's a chart.

Posted: Sat Sep 21, 2019 11:25 am
by purplecloud
Interesting! Thank you for putting in the time and effort to analyze and share it with us!