Information on actual vs theoretical throughput
In light on the recent feedbacks regarding the slow network speed reported when using our Wireless N Dongle, I would like to advise users on the actual throughput of a 802.11n network.
Wireless Networking has all the complexity of traditional wired networking with the additional complications of signal strength issues such as radio interference and barriers, as well as additional overhead related to wireless transmission that commonly halves its real world throughput over the theoretical raw data rate.
- 802.11b has a theoretical speed maximum of 11 Mbits/sec with a typical transfer rate of around 4.5 Mbits/sec (0.5 MB/sec) with an ideal signal.
- 802.11g has a theoretical speed maximum of 54 Mbits/sec, with a typical transfer rate of around 23 Mbits/sec (2.5 MB/sec) with an ideal signal.
- 802.11n has a theoretical speed maximum of 300 Mbits/sec, with a typical transfer rate of around 74 Mbits/sec (9.25 MB/sec) with an ideal signal.
Fast Ethernet has a theoretical speed of 100 Mbits/sec (12 MB/sec)
Gigabit Ethernet has a theoretical speed of 1000 Mbits/sec (120 MB/sec)
Users can also read up on more information via wiki at this location,http://en.wikipedia.org/wiki/IEEE_802.11
Please note that the max net bit brate of 600Mbits/sec is based on the finalised 802.11n standards with a throughput of 144Mbits/sec.
Back to our wireless N dongle specifications, it supports MIMO (Multi-Input Multi-Output) technology with 1 Transmit and 2 Receive, which translates to a maximum of 150Mbits/sec transmit and 300Mbits/sec receive in theory.
Now with reference to the above transfer rate for 802.11n (300Mbits/sec), a typical transfer rate of around 74Mbits/sec (9.25MB/sec) with an ideal signal, our wireless N dongle should be able to have a transfer rate of approximately 40Mbits/sec which is around 5MB/sec (1Mbit/sec = 0.125MB/sec)
Please note that you will not get a wireless N transfer rates if you connect to a wireless G router or neither if you connect to a wireless N router with WEP or TKIP security.
5 Ways To Fix Slow 802.11n Speedhttp://www.smallnetbuilder.com/content/view/30664/228/
1. Use the Correct Measure
2. Use Draft 11n Clients
3. Don't Connect Draft 11n and 11b/g clients to the same router
4. Use WPA2/AES
5. Don't use Channel Bonding
Some test results with iperf
. You can also download iperf and run it on a command prompt, I'm using the following parameters, iperf -c IPADDRESS -i 1 -t 180 -w 200K
, you can also type iperf --help to see the available parameters. I will try to provide more test results when I am back to work on the 29th. I'm actually on vacation now...
Average transfer rate of 4.59MB/sec in NONE security mode
Average transfer rate of 4.52MB/sec in WPA-AES security mode
Average transfer rate of 2.47MB/sec in WEP or TKIP security mode
The above test is performed with our wireless N dongle on the Playon!HD over a TP-LINK TL-WR841N wireless router.
Based on the test report, users should be able to transfer at rates of approximately 5MB/sec and above, depending on the network environment and configuration.
Please take note that this article remains as a guide to our wireless N dongle transfer rate. Should you have any problem arising with your networking speed, please email to our tech team at email@example.com
with your network configuration and transfer rate attained, we will try our best to look into it.
Hope this article helps.
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