Justas, those numbers are what you would expect when running in mixed
mode (i.e b/g) based on the protocol overhead.  If you set the mode to
a/g, which only supports the OFDM rates, you should see higher
throughput.  With the mode=a/g, the max throughput you should see for
unicast at 54Mbps will be slightly over 20Mbps.

kb

Kaushik B. Patel
Adjacent Link LLC


On 11/03/2016 09:44 AM, Justas Poderys wrote:
> Hello all,
> 
> I am using EMANE (v 1.0.1) with CORE networks emulator. In my topology I have 
> two WiFi nodes connected to wlan network. All nodes are configured to use 
> EMANE "ieee80211abg" mode.
> 
> For my test, I run a simple iperf session to evaluate max attainable speed. 
> My results seem to indicate, that there is almost no difference, once the 
> "unicast rate" is set above 11 Mbps. My one-way unicast transmission results 
> are:
> 
> 802.11b/g:
>                 Unicast-rate       Observed Transmission speed
>                 1: 1Mbps             1.46Mbit/s
>                 2: 2Mbps             2.31Mbit/s
>                 4: 11Mbps           6.63Mbit/s
>                 9: 24Mbps           9.78Mbit/s
>                 10: 36Mbps         10.8Mbit/s
>                 12: 54Mbps         11.5 Mbit/s
> 
> Am I missing some setting somewhere, so I can reach higher speeds?
> 
> Thanks for help.
> ~Justas
> 
> 
> 
> Justas Poderys
> 
> PhD student
> 
> Network Technologies and Service Platforms
> 
> DTU Fotonik
> 
> 
> 
> Technical University of Denmark
> 
> Department of Photonics Engineering
> 
> Ørsteds Plads
> 
> Building 343, Room 127
> 
> 2800 Kgs. Lyngby
> 
> Mobile +45 50 24 40 88
> 
> [email protected]<mailto:[email protected]>
> 
> www.dtu.dk/english<http://www.dtu.dk/english>
> 
> 
> [http://www.dtu.dk/~/media/DTU_Generelt/Andet/DTU_email_logo_01.gif]
> 
> 
> 
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> 
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> 
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