Like every other website on the planet, SmallNetBuilder uses cookies. Our cookies track login status, but we only allow admins to log in anyway, so those don't apply to you. Any other cookies you pick up during your visit come from advertisers, which we don't control.
If you continue to use the site, you agree to tolerate our use of cookies. Thank you!

Router Charts

Click for Router Charts

Router Ranker

Click for Router Ranker

NAS Charts

Click for NAS Charts

NAS Ranker

Click for NAS Ranker

More Tools

Click for More Tools

Wireless Reviews

Wireless Performance - Throughput vs. range

The latest word I have is that we won't be seeing draft 11n products that incorporate the protection mechanisms in Draft 1.10/2.0 for legacy 2.4 GHz gear until the May/June time frame. So I did not do any interoperability or "bad neighbor" testing. Instead, I used the Azimuth to compare 2.4 and 5 GHz band performance. I also ran comparisons with a dual band a/b/g router and card.

Azimuth advised starting with the ACE set to Butler mode. Butler mode emulates a unity gain, non-fading channel with a fixed set of antenna-to-antenna phase relationships. According to Azimuth, Butler mode provides a channel with a "high degree of linear independence". In simpler terms, Butler mode essentially makes the ACE disappear and so can be used to look at best-case performance.

I also spent some time trying to correlate results between the Azimuth W Series MIMO test and the ACE. After some back-and-forth with Azimuth, I was able to get the shape of the performance vs. range "waterfall" curve to be pretty similar, but found that gain differences in the ACE's algorithms shifted the curves along the path loss axis with respect to each other. So if you compare these results to those in my earlier tests, keep that in mind.

Let's start out by looking at the throughput vs. range curves. Figure 18 shows 2.4 GHz band results in both 40 MHz (channel bonding) and 20 MHz modes. Figure 19 shows the same thing for the 5 GHz band.

2.4 GHz band throughput vs. range
Click to enlarge image

Figure 18: 2.4 GHz band throughput vs. range

It's immediately obvious that with the current nFiniti firmware, you have your choice of high speed and shorter range or lower speed and longer range. The main reason appears to be that the range setting algorithms don't allow downshifting from 40 MHz to 20 MHz mode when the signal gets too low to sustain connection in 40 MHz mode. In other words, there is no auto 20/40 MHz mode.

The other observation is that uplink speed is greater than downlink. This is something that is consistent throughout my test results, so it's possible that it could be due to TCP/IP or other settings that I don't futz with.

5 GHz band throughput vs. range
Click to enlarge image

Figure 19: 5 GHz band throughput vs. range

More Wireless

Wi-Fi System Tools
Check out our Wi-Fi System Charts, Ranker and Finder!

Support Us!

If you like what we do and want to thank us, just buy something on Amazon. We'll get a small commission on anything you buy. Thanks!

Over In The Forums

Wondering if anyone is experiencing this issue. Happened with 384.8-2 and 384.10 betas.Have the router set to auto reboot once a week. Most times the ...
"Kaspersky Lab has uncovered a new advanced persistent threat (APT) campaign that has affected a large number of users through what is known as a supp...
https://uk.reuters.com/article/us-a...h-backdoor-software-update-idUKKCN1R61R9?il=0
Hi, wondering if this is possible.I want to segregate certain devices to operate over VPN and was hoping I could use my AC68 to do so, without it beco...
QNAP's webpage says that speed drops by half if directly connected to NAS. Why is this and how can Imaximize Thunderbolt 3 speed? Considering direct c...

Don't Miss These

  • 1
  • 2
  • 3