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QAM and GMSK modulation methods

  • US 8,259,832 B2
  • Filed: 10/27/2011
  • Issued: 09/04/2012
  • Est. Priority Date: 08/09/1999
  • Status: Expired due to Fees
First Claim
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1. A method for:

  • filtering a first bit rate signal by a first transmit filter and modulating by a modulator said first bit rate filtered signal into a Gaussian Minimum Shift Keyed (GMSK) modulated signal;

    filtering a second bit rate signal by a second transmit filter and modulating by said modulator said second bit rate signal into a Quadrature Amplitude Modulated (QAM) signal, wherein said second bit rate is different from said first bit rate;

    nonlinearly amplifying said GMSK modulated signal and for providing said GMSK amplified signal to a first transmitter for transmission of said GMSK amplified signal;

    linearly amplifying said QAM signal and for providing amplified signal to a second transmitter for transmission of the linearly amplified QAM modulated signal, wherein said second transmitter is operated in a different Radio Frequency (RF) band than said first transmitter; and

    receiving and demodulating by a diversity receiver and a demodulator a transmitted modulated signal.

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