IEEE 802.11b/g implementation

[Rafal Sroka]

Hi,

I am currently studying ns-3 PHY's and got stuck. IEEE 802.11a based PHY is modelled by ns3:YansWifiPhy and that model is well described in "Yet Another Network Simulator" paper. However I cannot find any information about 802.11b and 802.11g implementation models. What classes do implement those standards? Documentation is enigmatic in that matter saying that 802.11b has been recently added: "The PHY layer implements a single 802.11a model in the ns3::WifiPhy (...) and recently extended to cover 802.11b physical layer." also I would like to know where is the implementation of 802.11g model added in ns-3.10.

Thanks in advance!
Rafael

[Gremz]

Hi,

You can choose the a,b or g version either directly in the YanWifiPhy, using the ConfigureStandard function (see http://www.nsnam.org/docs/release/3.10/doxygen/namespacens3.html#a1299834f4e1c615af3ca738033b76a49 for the available standards), or with a WifiHelper, using the SetStandard function.

Regards,

Guillaume

[Nicola Baldo]

Hi Rafael,

On Apr 24, 5:46 pm, Rafal Sroka <rafal.sroka...@gmail.com> wrote:
> I am currently studying ns-3 PHY's and got stuck. IEEE 802.11a based PHY is modelled by ns3:YansWifiPhy and that model is well described in "Yet Another Network Simulator" paper.

that's not the only error model available, see this post:
http://groups.google.com/group/ns-3-users/browse_thread/thread/c9d9fa67280dc542/dea96a4519f6535e

> However I cannot find any information about 802.11b and 802.11g implementation models. What classes do implement those standards? Documentation is enigmatic in that matter saying that 802.11b has been recently added: "The PHY layer implements a single 802.11a model in the ns3::WifiPhy (...) and recently extended to cover 802.11b physical layer."

Yes you're right, the documentation is not up-to-date with respect to
the code. Would you please file a bug on bugzilla so that we can track
the problem and fix it when the documentation is revisited?

> also I would like to know where is the implementation of 802.11g model added in ns-3.10.

You mean the error model? ns-3 implements ERP-OFDM according to the
IEEE 802.11 nomenclature. This is basically the OFDM PHY specification
for 5 GHz (a.k.a. 802.11a), but used at 2.4 GHz instead. Hence the
error model for 802.11g is the same of 802.11a because it involves the
same modulation and coding schemes.

Nicola