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Wideband wireless basestation making use of time division multiple-access bus having selectable number of time slots and frame synchronization to support different modulation standards

  • US 5,592,480 A
  • Filed: 03/13/1995
  • Issued: 01/07/1997
  • Est. Priority Date: 03/13/1995
  • Status: Expired due to Term
First Claim
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1. A basestation for processing signals in a multiple mobile subscriber unit wireless communication system comprising:

  • an antenna for receiving signals from a plurality of the mobile units as a composite radio frequency, RF, signal;

    wideband digital tuner means, connected to the antenna, for down-converting a selected bandwidth of the RF signal to an intermediate frequency, IF, signal and for performing an analog to digital conversion on the IF signal, to provide a wideband digital tuner output signal;

    digital channelization means, being connected to receive the wideband tuner output signal, and providing multiple digital channel signal outputs, each digital channel signal output having a predetermined channel bandwidth, and each digital channel signal corresponding to one of the signals received from one of the mobile units;

    a plurality of digital signal processing means, for providing digitally processed channel signal outputs;

    time division multiplex switching means, disposed between the multiple digital channel signal outputs and the plurality of digital signal processing means, the switching means for interconnecting any one of the multiple digital channel signal outputs to any one of the plurality of digital signal processing means; and

    synchronization timing means, connected to control the time division multiplex means, to provide, at a frame rate which depends upon the predetermined bandwidth of the channel signals, a plurality of time slots, the number of time slots depending upon the number of digital channel signals.

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