hello all,,,my name meytii need articles wlan over fiber and wlan 802.11band i
need script simulation in NS 2 to find throughput vs distance, throughput
mekanism basic access and RTS/CTSplease help me...




[Non-text portions of this message have been removed]

Hi,


    This is Ammankumar. I have 2 Queries regarding Implementation of OFDM
Transceiver implementation using FPGA.

1) How to determine no.of points in IFFT w.r.to Bandhwidth?

2) Where the compression happens in OFDM ? in IFFT or QPSK( for example)

Kindly help me. Thanks in Advance


       Add more friends to your messenger and enjoy! Go to
http://messenger.yahoo.com/invite/

can u help me with WLAN controller ...redundancy.... i have
implemented at the site , but facing .... this problem ....over the
wan link .....

Check out - Free video-based Wireless LAN eLearning course

Wireless LAN Concepts - a video based eLearning course is now available
free to the registered users of www.Wi-FiGurus.com.  This is a great
course for an introduction to wireless LANs. There are videos of Jim
Geier discussing concepts of wireless LANs, including applications,
benefits, issues, technologies, standards, components, and
configurations. This eLearning course also includes several
demonstrations on how to setup and configure a wireless LAN. Go to
www.wi-figurus.com for more info.

Hai Dear all,

       I'm facing a problem with Wi-Fi Connectity between Seano Access
Point & Intel Duo Core Builtin Wi-Fi.

Seano Access Point Spec :  802.11b standard
Seano mode : AP Mode

Seano is good brand of AP

Thanks,
s.s.arvindhar

Hi
Since you are well versed on this topic Please give me an idea
how to modify it and add a research perspective to it.I had worked on
this topic 3 years back so have lost touch with it.Hence I am not in a
position to provide solutions to the drawbacks.I would be submitting
my application before 19th 2006.Any tips and guidlines are welcome


Thanks a lot for your concern

Poonam

Hi its very nice paragraph but it would be more meaningful if you could add more
the drawback of present which yoiu want to eradicate of want to make more
explanotry for reaserch purpose.
   Good luck

   have a nice day


"poonam.apr8" <poonam.apr8@...> wrote:
           Hi all,

I am applying for M.S and would like to know if there is any mistake
in the following para which I am including in my statement of purpose
as my research interest.Please let me know if any additons or
deletions are required.

"My final year project concerns with study of OFDM system in wireless
environments. I have investigated the impact of channel estimation
on BER performance in time variant environment using pilot symbol
scheme. Though Channel estimation algorithms improve BER performance
there is loss of data throughput One solution used to enhance channel
capacity is the adaptive modulation scheme. In near future I would
like to examine the effect of channel estimation error on adaptive bit
loading and PAPR reduction techniques.:






Vijender Kr. Solanki
Lecturer
Department of Computer Applications
Delhi School of Professional Studies and Research
Sec 25, Rohini, New Delhi - 85
www.dspsr.ac.in
M.No: 09868513926, 09911513926





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[Non-text portions of this message have been removed]

Hi all,

I am applying for M.S and would like to know if there is any mistake
in the following para which I am including in my statement of purpose
as my research interest.Please let me know if any additons or
deletions are required.

"My final year project concerns with study of OFDM system in wireless
environments.  I have investigated  the impact of channel estimation
on BER performance in time variant environment using pilot symbol
scheme. Though Channel estimation algorithms improve BER performance
there is loss of data throughput One solution used to enhance channel
capacity is the adaptive modulation scheme. In near future I would
like to examine the effect of channel estimation error on adaptive bit
loading and PAPR reduction techniques.:

Merci Admin et Moderateurs de avoir acepte mon inscription dans votre
cite
Je cherche un programe pour ce connecte ou casse codes de entre dans
wifi (wireless)
Merci a vous

Please , help me with WLSE ....

Hi Gautam,
- Look for open source device drivers which have
softmac implementation.
- Security protocols are standard and part of a
supplicant with driver-phy interactions for E(x)D(x)

- You will need an ARM cross compiler which you can
get with cygwin. ARM ADS will be costly!

Also search for source code on MIMO.
thanks,
Surya Rao
PGP10@IIM Kozhikode

--- GAUTAM JAIN <gautamjain_86@...> wrote:

> hello friends i m a new member in this group. i m a
> final year engg. student. i m going to make a wifi
> as my final year project. i know many things about
> wifi but though i m suffering from problems
> regarding this topic that how to start it ? how to
> create the protocols ? and i havent any industrial
> guidence too. so if you have any kind of infomation
> please reply
>
> ---------------------------------
> Talk is cheap. Use Yahoo! Messenger to make
> PC-to-Phone calls.  Great rates starting at 1˘/min.
>
> [Non-text portions of this message have been
> removed]
>
>
>
>


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   .


            thanks a lot for anser
        as i wrote in previos mail , that i want to implement it . but i m very
cinfused that whether should i go for make a hardware of accesspoint or design
the protocols. i  have read both layers ( phsical and data link ) . i have read
wifi hand book too. i got the idea of standerds but still i m confused that how
to start my project . what is the starting point? i dont have the block diagram
of access point .  i know the function of it but i dont have any idea of its
internal structure . in other side if i take a readymade accesspoint and design
a protocols . but i dont have proper path . sometimes i think that go for
protocols but i stop because i heard that its a very big job we cant complete it
in a year . i m ready to work hard but ...
    , ...................if u have a idea regarding
this please help me


     gautamjain


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Examples of the WLAN testing we performed:



    http://www.netopia.com/3DReach/News_IQ_Labs_Report.pdf





Test Solution used

WLAN

(802.11a,b,g)                                 Spirent SMB600
SmartBits with/SmartFlow (Layer 2,3,4)

                                                        Agilent 89641A
Vector Signal Analyzer with WLAN (Layer 1, TX)

                                                        Agilent ESG
E4438C Vector Signal Generator (Layer 1, RX)





If News IQ can be of assistance to you please do not hesitate to
contact me at any time.
Thank you very much,

James Fraley
NEWS IQ Inc. Test Laboratory
Office (760) 603-3292
2790 Loker Ave. West, Suite #114
Fax:   (760) 603-8563
Carlsbad, CA.
92008
http:www.newsiq-inc.com

GAUTAM JAIN wrote:
> hello friends i m a new member in this group. i m a final year engg. student.
i m going
> to make a wifi as my final year project. i know many things about wifi but
though
> i m suffering from problems regarding this topic that how to start it ? how to
create
> the protocols ? and i havent any industrial guidence too. so if you have any
kind
> of infomation please reply

Gautam,

First of all you need to decide the scope of the project. The WiFi
technology includes two distinct layers - the Physical layer (or the
PHY) that does all the signal processing and the Medium Access Control
(or the MAC) layer that defines the protocol of when a device can
transmit on the network. Each of these layers is quite complex by
itself.

The technical standard that defines the WiFi protocol (called the IEEE
802.11 standard) can be downloaded for free from
http://standards.ieee.org/getieee802/802.11.html

There are also several active groups that are defining improvements to
the standard. You can find out more about these activities at
http://www.ieee802.org/11/

Study these so that you know the current state of the technology which
will give you an idea about what can be done.

Feel free to post on this group with more questios.

Regards,
- Harshal

hello friends i m a new member in this group. i m a final year engg. student. i
m going to make a wifi as my final year project. i know many things about wifi
but though i m suffering from problems regarding this topic that how to start it
? how to create the protocols ? and i havent any industrial guidence too. so if
you have any kind of infomation please reply

---------------------------------
Talk is cheap. Use Yahoo! Messenger to make PC-to-Phone calls.  Great rates
starting at 1˘/min.

[Non-text portions of this message have been removed]

Just curious to read about what led r.w chang, bell labs to come up
with OFDM. But I dont see anything in the web about him, except
references to one single article of his in the bell lab journal dated
1967. And even that article is not available online anywhere.

Anyone have any links about him, his work, his paper, or his patent,
please pass on the same.

Thanks!

hello every one , I'm new to hits group .. Hope u all will help me
about topics.. I want to setup wlse in my company and i have more then
90 access point ... please give me the complete details about it .. I
know nothing about wlse ...

regards

rajinder

Hallo;All
   I m learning the OFDM and its functionality, I am trying to simulate the OFDM
system , but still i am unsuccessful while transmititng through the Rayleigh
channel,as I m very new to matlab.For comprehension I need the seperate modules
of different stages of OFDM i.e bit generation, coding interleaving, Mapping,
FFT and Guard intervel insertion, Filtering , RF modulation and channel model
pluse noise seperately,,,,,and same for reciever model .Can anybody help me by
sending the simple implementations of these steps in Matalb , I would be
grateful to You

   Thanks
   T J S Khan
   Germany


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[Non-text portions of this message have been removed]

Hi Neeraj,
Signal of WIFI too possess the property of Electromagnetic Waves i.e
so the signal of a WIFI access point is accessible inside the glass
Chamber. Constraints, Access Point must be in LOS region of the
Chamber and more the thickness of the GLASS, Weak the Signal Strength.
Hurray!
Harish
--- In wirelesslan@yahoogroups.com, "computer_repair_ldh"
<computer_repair_ldh@...> wrote:
>
>
> further to that  a last query " can signal of wifi access point is
> accesible inside the glass chamber .
> >
> >Regards
> >
> >Neeraj
> >
>

Hi Neeraj,
WIFI signals Have Similar Property as electromagnetic Waves. So they
are easily accessible inside the Glass Chamber Provided the Access
Point is in Line of Sight. Besides, more thick the glass weaker the
signal.

Hurray
Harish
--- In wirelesslan@yahoogroups.com, "computer_repair_ldh"
<computer_repair_ldh@...> wrote:
>
>
> further to that  a last query " can signal of wifi access point is
> accesible inside the glass chamber .
> >
> >Regards
> >
> >Neeraj
> >
>

further to that  a last query " can signal of wifi access point is
accesible inside the glass chamber .
>
>Regards
>
>Neeraj
>

Thankyou Harshal,

   Thankyou verymuch for your info.

   And cld any one pls predict how will be the market potential for WIFI in
india. And how about the impact of WIFI in european & USA market. Do they
penetrate well.

   Give me some info about market potential & pricing details for the same.

   Best Regards

   Immanuel

Harshal Chhaya <harshal@...> wrote:
   Immanuel Raj wrote:
>   I am Immanuel, Could any one pls confirm how many no of systems can
> be connected with single AP in 30m range of distance practically. And how
> about the transfer rate, Will it remain constant like 54Mbps for all the
machines
> or it will get scattered to all the machines.


Immanuel,

The number of clients that can be supported depends on the AP
configuration. Enterprise-class APs from Cisco are more powerful (more
memory, faster CPU) and can support dozens of users. On the other
hand, APs that are designed for home use can typically support only a
few users. I don't think any vendor provides specific numbers for this
but I could be wrong. Look at the data-sheets of APs from a few
well-known vendors to get an idea.

As for the data rate, the 54Mbps is the physical data rate for the
entire network. All the devices share that rate so as the number of
users increases, the throughput per user typically decreases. Also
note that even in a network with a single device connected to the AP,
the maximum data throughput is much less than 54Mbps due to protocol
overhead.

Regards,
- Harshal





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http://www.wlanforum.com/
http://groups.yahoo.com/group/wirelesslan/




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[Non-text portions of this message have been removed]

Immanuel Raj wrote:
>   I am Immanuel, Could any one pls confirm how many no of systems can
> be connected with single AP in 30m range of distance practically. And how
> about the transfer rate, Will it remain constant like 54Mbps for all the
machines
> or it will get scattered to all the machines.


Immanuel,

The number of clients that can be supported depends on the AP
configuration. Enterprise-class APs from Cisco are more powerful (more
memory, faster CPU) and can support dozens of users. On the other
hand, APs that are designed for home use can typically support only a
few users. I don't think any vendor provides specific numbers for this
but I could be wrong. Look at the data-sheets of APs from a few
well-known vendors to get an idea.

As for the data rate, the 54Mbps is the physical data rate for the
entire network. All the devices share that rate so as the number of
users increases, the throughput per user typically decreases. Also
note that even in a network with a single device connected to the AP,
the maximum data throughput is much less than 54Mbps due to protocol
overhead.

Regards,
- Harshal

Hello,

   I am Immanuel, Could any one pls confirm how many no of systems can be
connected with single AP in 30m range of distance practically. And how about the
transfer rate, Will it remain constant like 54Mbps for all the machines or it
will get scattered to all the machines.

   Pls do clarify, Thankyou in advance for your supports.

   Best Regards

   Immanuel

Harshal Chhaya <harshal@...> wrote:
   shyryn22 wrote:
> Hello
>    iam sheela.iam doing my project in wireless LAN.one of my task is
> detecting promiscuous node in WLAN.will you guide me how to set a
> Wireless NIC in a promiscuous mode.awaiting for your reply.

Sheela,

The utilities that come with a NIC typically have an option for
setting the card in a promiscuous mode. The firmware/hardware of the
NIC have to be configured to be
in this mode. So if you want to do this yourself, you need to know the commands
that the NIC expects.

Good luck,
- Harshal




http://www.wireless--lan.com/
http://www.wlanforum.com/
http://groups.yahoo.com/group/wirelesslan/




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[Non-text portions of this message have been removed]

shyryn22 wrote:
> Hello
>    iam sheela.iam doing my project in wireless LAN.one of my task is
> detecting promiscuous node in WLAN.will you guide me how to set a
> Wireless NIC in a promiscuous mode.awaiting for your reply.

Sheela,

The utilities that come with a NIC typically have an option for
setting the card in a promiscuous mode. The firmware/hardware of the
NIC have to be configured to be
in this mode. So if you want to do this yourself, you need to know the commands
that the NIC expects.

Good luck,
- Harshal

Hello


    iam sheela.iam doing my project in wireless LAN.one of my task is
detecting promiscuous node in WLAN.will you guide me how to set a
Wireless NIC in a promiscuous mode.awaiting for your reply.

              Thanking u

with regards
sheela

I am coonecting a Directional Omni Anteena  with an Senao BG3+ AP and
broadcasting the network on Air how many maximum  AP clients can be
coonected to catch those AP's. Do the throughput will bee efected on
increase of no. of client. Is it posoible with repeater or boosters to
coonect and maintain the thorughput.

--- In wirelesslan@yahoogroups.com, "portillojorgeluis"
<portillojorgeluis@...> wrote:
>
> Very well, I have bought a Access Point LOBOMETRICS LOBO908R I I
have
> not been able to program this device.  I wanted to interchange
> experiences about the use of this device
>


Hi

This APs has embedded the Ikarus OS Operating System. You can get more
information in http://forum.antcor.com/forum/

Regards

MiZXu

hai  sir,
   i am engineering student doing my final yr project in ofdm modem software
simulation
   inmatlab if u have any valuable info abt my interesting project pls inform me
by mail

   with friendly
   richard.c
   rim:9366605550
   india


ccsekar_ra <ccsekar@...> wrote:
   Hello all my name is Chandrasekar and I am currently doing P.hd., in
the area of Wireless. My project is Seamless mobility with WLAN and
Cellular network.

I need the simulation tool and some basic coding for the above area.
Any one working with this area, please repond me.

Thanking you,

C. Chandrasekar









http://www.wireless--lan.com/
http://www.wlanforum.com/
http://groups.yahoo.com/group/wirelesslan/

Yahoo! Groups Links










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[Non-text portions of this message have been removed]

Hello all my name is Chandrasekar  and I am currently doing P.hd., in
the area of Wireless.  My project is Seamless mobility with WLAN and
Cellular network.

I need the simulation tool and some basic coding for the above area.
Any one working with this area, please repond me.

Thanking you,

C. Chandrasekar