×

Wideband base station architecture for digital cellular communications system

  • US 5,768,268 A
  • Filed: 07/19/1995
  • Issued: 06/16/1998
  • Est. Priority Date: 07/19/1995
  • Status: Expired due to Fees
First Claim
Patent Images

1. A wideband transmitter system for simultaneously transmitting a plurality of information signals provided by a corresponding plurality of input signal lines, comprising:

  • an input line interface configured to multiplex said plurality of information signals onto an input data bus;

    a plurality of digital transmit modules coupled to said input data bus, each digital transmit module configured to process one or more of said information signals to produce one or more corresponding baseband signals, and each digital transmit module including;

    (a) a modulator coupled to said iput data bus and configured to modulate a digital carrier siginal using one or more of said information signals in order to produce a modulated signal; and

    (b) a digital frequency synthesizer coupled to said modulator and configured to translate said modulated signal to a predefined baseband frequency in order to produce said one or more baseband signals;

    a wideband summation network coupled to said plurality of digital transmit modules and configured to add said one or more baseband signals from each of said digital transmit modules to produce a composite baseband signal onto a wideband data bus; and

    a wideband transmitter coupled to said wideband data bus and configured to generate a transmission waveform in response to said composite baseband signal to simultaneously transmit said information signals.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×