transmission range configuration

[Laércio Júnior]

Hi all,
I'm needing to know the transmission range of a node considering the following parameters:

wifiPhy.Set ("TxPowerStart",DoubleValue (-20));
wifiPhy.Set ("TxPowerEnd", DoubleValue (-20));

Can someone know to tell if there is some equation that calcutates the transmission range using these parameters? I need to configure a range to 50 meter and I don't know if the values are correct.

Thanks in advance,
Laércio

[Rafael Fernandes Lopes]

Laércio,

the equation depends of the propagation loss model used (log distance, Friss, etc).

Regards,

2011/1/13 Laércio Júnior <laercio...@gmail.com>

--
You received this message because you are subscribed to the Google Groups "ns-3-users" group.
To post to this group, send email to ns-3-...@googlegroups.com.
To unsubscribe from this group, send email to ns-3-users+...@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/ns-3-users?hl=en.

--
Rafael Fernandes Lopes
Lattes:  http://lattes.cnpq.br/1972734433460838
____________________________________________________________
Universidade Federal de Campina Grande -- UFCG
Unidade Acadêmica de Engenharia Elétrica -- UAEE
Instituto de Estudos Avançados em Comunicações -- IECOM
http://www.iecom.org.br

Instituto Federal de Educação, Ciência e Tecnologia do Maranhão -- IFMA
http://www.ifma.edu.br
____________________________________________________________

[Laércio Júnior]

Rafael,
I'm using the Friss model.

Best regards!

[Rafael Fernandes Lopes]

Ok... You can see the Friis equation in the following link: http://en.wikipedia.org/wiki/Friis_transmission_equation

You have two options:

(a) the first one is to set the energy detection threshold according to the TX power and transmission range. So, using the Friis equation you can put all parameters to calculate the Pr (received power) relative to the 50 m.

(b) you can take a look on the default values of the other parameters and change only the transmission power (as you have suggested before) according to Friis equation.

If you understand portuguese I can send you a report that I have prepared during a course on my PhD. This topic is explained there.