[ns] Fwd: How to calculate bandwidth from transmission power?

[Chakkaphong St.]

Hi all,

Actually I found from the internet that transmission power = 0.2818 W
provides 2Mbps bandwidth.
However, I cannot find the other values for transmission power = 8.5872e-4and
7.214e-3. I appreciate any help.

Sincerely,
Chakkaphong S.


---------- Forwarded message ----------
From: Chakkaphong St. <nogtor at gmail.com>
Date: Jan 6, 2006 9:53 AM
Subject: How to calculate bandwidth from transmission power?
To: ns-users at isi.edu

Hi all,

How can I map transmission power with the value of bandwidth? I am working
about the transmission power in wireless network. I am also using shadowing
propagation model
with transmission power = 0.2818 Watt, which provides 250m communication
range. The other mapping between
transmission power and range are

 From wireless-phy.cc
       Pt_ = 8.5872e-4 // For 40m transmission range.
       Pt_ = 7.214e-3  // For 100m transmission range.
       Pt_ = 0.2818 // For 250m transmission range.


This is the model of AT&T's Wavelan PCMCIA card. However, I would like to
map each transmission power with
the transmission rate , such as 54, 11, 5,2,1 Mbps,etc. Can I do that? Do
you know the reference of this default
power (0.2818)?  Any suggestions and hints are welcome.


Thank you in advance,

Sincerely,
Chakkaphong S.


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