WiFi Bandwidth issue

Discussion in 'Wireless Networking' started by TJ, Jul 19, 2004.

  1. TJ

    TJ Guest

    I have a 3Com A/B/G access point to which I connect with a 3Com A/B/G PCMCIA
    (the model with X-jack).

    The problem is that I never seem to get better than 1.5 Mb when connecting
    to the A or G bands.

    Other notes:
    * The computer has a fresh install of Windows XP Pro.
    * I have very good to excellent rated signal strength in both frequency
    ranges.
    * There are no other WiFi networks in my area.
    * It does not matter which channel I connect using, results are the same.
    * I can not locate any signal interference on either band.
    * I have no other WiFi devices which could interfere

    Any help would be appreciated.
    Ted
     
    TJ, Jul 19, 2004
    #1
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  2. Hi Ted,

    How are you measuring this bandwidth? And between which two machines are you
    measuring the bandwidth? Are both these machines in your LAN?

    With 802.11g, it is possible to achieve upto around 23Mbps of TCP bandwidth
    on the wireless hop alone (the documented raw figure is 54Mbps of course,
    but accounting for all overheads, this is the largest empirical figure I've
    encountered). Again in your case (assuming that this is the configuration in
    your house), your DSL or cable line may be the bottleneck or you may be
    seeing a reduced bandwidth because of high traffic on the uplink in your
    neighbourhood.

    Rajiv
    --
    This posting is provided "AS IS" with no warranties, and confers no rights.


    "TJ" <> wrote in message
    news:...
    > I have a 3Com A/B/G access point to which I connect with a 3Com A/B/G

    PCMCIA
    > (the model with X-jack).
    >
    > The problem is that I never seem to get better than 1.5 Mb when connecting
    > to the A or G bands.
    >
    > Other notes:
    > * The computer has a fresh install of Windows XP Pro.
    > * I have very good to excellent rated signal strength in both frequency
    > ranges.
    > * There are no other WiFi networks in my area.
    > * It does not matter which channel I connect using, results are the same.
    > * I can not locate any signal interference on either band.
    > * I have no other WiFi devices which could interfere
    >
    > Any help would be appreciated.
    > Ted
    >
    >
     
    Rajiv P. Bharadwaja [MSFT], Jul 19, 2004
    #2
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  3. TJ

    TJ Guest

    Rajiv,
    Thank you for your reply.
    The bandwidth being measured is mostly just internal network. I do have
    broadband, however am less concerned about that bandwidth. I have used
    several apps which measure upload/download speeds (I.E. TCP/IP packets) all
    give approximately the same results.



    ted


    "Rajiv P. Bharadwaja [MSFT]" <> wrote in message
    news:%...
    > Hi Ted,
    >
    > How are you measuring this bandwidth? And between which two machines are

    you
    > measuring the bandwidth? Are both these machines in your LAN?
    >
    > With 802.11g, it is possible to achieve upto around 23Mbps of TCP

    bandwidth
    > on the wireless hop alone (the documented raw figure is 54Mbps of course,
    > but accounting for all overheads, this is the largest empirical figure

    I've
    > encountered). Again in your case (assuming that this is the configuration

    in
    > your house), your DSL or cable line may be the bottleneck or you may be
    > seeing a reduced bandwidth because of high traffic on the uplink in your
    > neighbourhood.
    >
    > Rajiv
    > --
    > This posting is provided "AS IS" with no warranties, and confers no

    rights.
    >
    >
    > "TJ" <> wrote in message
    > news:...
    > > I have a 3Com A/B/G access point to which I connect with a 3Com A/B/G

    > PCMCIA
    > > (the model with X-jack).
    > >
    > > The problem is that I never seem to get better than 1.5 Mb when

    connecting
    > > to the A or G bands.
    > >
    > > Other notes:
    > > * The computer has a fresh install of Windows XP Pro.
    > > * I have very good to excellent rated signal strength in both frequency
    > > ranges.
    > > * There are no other WiFi networks in my area.
    > > * It does not matter which channel I connect using, results are the

    same.
    > > * I can not locate any signal interference on either band.
    > > * I have no other WiFi devices which could interfere
    > >
    > > Any help would be appreciated.
    > > Ted
    > >
    > >

    >
    >
     
    TJ, Jul 20, 2004
    #3
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