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Re: [BCD396XT] Re: X2-TDMA (Future P25 Phase II) Support

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  • MCH
    No. The channels can be anywhere. (although in theory they could be adjacent just as they could be adjacent on an any trunking system) But, the slots on each
    Message 1 of 46 , Mar 14, 2011
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      No. The channels can be anywhere.
      (although in theory they could be adjacent just as they could be
      adjacent on an any trunking system)

      But, the slots on each channel are, by definition, adjacent.
      That's where the 'multiple access' comes in - each channel
      can be used by more than one user.

      For a two-slot FDMA system, the channel is divided in two.
      For four-slot FDMA systems, it is divided in four, Etc.

      The key is that FDMA systems have multiple users on each transmitted
      frequency bandwidth (AKA channel), or CAN have that if needed.

      Joe M.


      Yuni T. Runker wrote:
      > So you're saying "real" FDMA requires all the channels to be adjacent?
      >
      > On Mar 14, 2011, at 9:38 AM, MCH <mch@...> wrote:
      >
      >> True FDMA will carry more than one user on the same channel - divided in
      >> the frequency domain (the frequency is split in two or more and each
      >> user has full-time use of their part).
      >>
      >
      >
      > [Non-text portions of this message have been removed]
      >
      >
      >
      > ------------------------------------
      >
      > Yahoo! Groups Links
      >
      >
      >
      >
    • Yuni T. Runker
      Yeah. Don t know what happened to the formatting. ... [Non-text portions of this message have been removed]
      Message 46 of 46 , Mar 15, 2011
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        Yeah. Don't know what happened to the formatting.

        On Mar 15, 2011, at 8:47 AM, MCH <mch@...> wrote:

        > Wow. Without the quotes, it's not easy to follow the text, but...


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