Generic selectors
Exact matches only
Search in title
Search in content
Search in posts
Search in pages

BTS

  • This topic is empty.
Viewing 15 posts - 76 through 90 (of 469 total)
  • Author
    Posts
  • #39260 Reply
    victor
    Guest

    Alexander,We are looking into finding information on Nokia BTS.Can you send us any information on any Nokia Ultra Site EDGE BTS?

    #39261 Reply
    Tach
    Guest

    I need an IM for the Ultracell, can anyone help?

    #39262 Reply
    tergech,Kericho ,Kenya
    Guest

    hi all ;
    I work with siemens machines can you plse tell what exactly this thing called COBA does in the BTS.

    Thanks

    #39263 Reply
    amit kumar rastogi
    Guest

    why we use diversity.

    #39264 Reply
    Arslan
    Guest

    A diversity antenna system can be compared to a switch that selects
    one
    >antenna or another, never both at the same time. The radio in receive
    mode
    >will continually switch between antennas listening for a valid radio
    >packet. After the beginning sync of a valid packet is heard, the radio
    will
    >evaluate the sync signal of the packet, on one antenna, then switch to
    the
    >other antenna and evaluate. Then the radio will select the best
    antenna,
    >and use only that antenna for the remaining portion of that packet.
    >
    >On transmit, the radio will select the same antenna it used the last
    time
    >it communicated to that given radio. If a packet fails, it will switch
    to
    >the other antenna and retry the packet.

    #39265 Reply
    Arslan
    Guest

    Im working on Nokia Ultra site EDGE BTS. If u have questions,do ask.

    #39266 Reply
    Arslan
    Guest

    Diversity is usually used to overcome a phenomenon called Multipath distortion.It uses two identical
    antennas,
    >located a small distance apart, to provide coverage to the same
    physical
    >area.
    >
    >Multipath Distortion
    >Multipath interference occurs when an RF signal has more than one path
    >between a receiver and a transmitter. This occurs in sites that have a
    >large amount of metallic or other RF reflective surfaces.
    >
    >Just as light and sound bounce off of objects, so does RF. This means
    there
    >can be more than one path that RF takes when going from a TX to and RX
    >antenna. These multiple signals combine in the RX antenna and receiver
    to
    >cause distortion of the signal.
    >
    >Multipath interference can cause the RF energy of an antenna to be
    very
    >high, but the data would be unrecoverable. Changing the type of
    antenna,
    >and location of the antenna can eliminate multipath interference.
    >
    >One can relate this to a common occurrence in one’s car. As one pull
    up to
    >a stop, one may notice static on the radio. But as one moves forward a
    few
    >inches or feet, the station starts to come in more clearly. By rolling
    >forward, one moves the antenna slightly, out of the point where the
    >multiple signals converge.

    #39267 Reply
    Herbert
    Guest

    Hi to all,

    I just want to know what is the Maximum power for BTS antenna 900Mhz and 1800Mhz, with and without TMA. Also, the Range (area coverage) in Km it can cover

    For Space Diversity antenna what is the required spacing. We have encounter Loss of signal when using BER for 24 Hours. What remedy can I do.

    Thanks to any help

    #39268 Reply
    k.gopal
    Guest

    tell me where omnidirectional & unidirectional antenna are used

    #39269 Reply
    anil
    Guest

    what is the range of rf fequency and microwave frequency.

    #39270 Reply
    tergech
    Guest

    hi,
    i measured some signals and i have a problem converting them from dbm to mw/cm^2.Please help.

    #39271 Reply
    Billy
    Guest

    Help — Please can anyone give me any info on Siemens Base stations and inform me who I can contact to obtain a copy of the Siemens LMT software !!

    #39272 Reply
    Jordy Irawan
    Guest

    Dear All,

    I am with a new sub contractor for service telco infrastructure for telco operator in malaysia. I have a poor basic in this area. I am in marekting division. For example I do not know what is BTS and their functions. What items or components should include for Power Installation Rectifier & battery. What items or components should we offer if clients ask for turnkey BTS installation or MW ?

    Could you give me info or anything related to this. It would be appreciated if you can send me website, study case, contact persons or papers about all this things.

    Thanks for your cooperation

    #39273 Reply
    Arslan
    Guest

    UltraSite BTS provides high output power and high receive sensitivity 44.5 dBm (28.2 W) with bypass combiner.

    #39274 Reply
    Arslan
    Guest

    Mike i have mailed u a few things.do check ur mail.

Viewing 15 posts - 76 through 90 (of 469 total)
Reply To: BTS
Your information:




<a href="" title="" rel="" target=""> <blockquote cite=""> <code> <pre class=""> <em> <strong> <del datetime="" cite=""> <ins datetime="" cite=""> <ul> <ol start=""> <li> <img src="" border="" alt="" height="" width="">