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VoIP multimode WLAN, Wi-Fi, GSM, EDGE, TDMA, spread spectrum, CDMA systems

  • US 7,711,368 B2
  • Filed: 10/25/2007
  • Issued: 05/04/2010
  • Est. Priority Date: 08/03/2005
  • Status: Expired due to Fees
First Claim
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1. A system comprising:

  • a first processor for processing a voice signal into a first bit rate processed Orthogonal Frequency Division Multiplexed (OFDM) signal for transmission in a Voice over Internet Protocol (VoIP) network;

    a second processor and transmit filter for processing and filtering a video signal and for providing a second bit rate processed and filtered Time Division Multiple Access (TDMA) signal, for transmission in a cellular system, wherein said first bit rate has a different rate than said second bit rate;

    a third processor for receiving and processing a location finder generated signal into processed location finder signal;

    a combiner for combining said processed location finder signal with said first and second bit rate signal and for providing combined signal for modulation and transmission;

    a modulator and a transmitter system for modulation and transmission of said combined signal, wherein said modulator system comprises a quadrature modulator for modulation of said combined processed location finder and OFDM signal and a non-quadrature modulator for modulation of said combined processed location finder and TDMA signal and said transmitter system comprises two antennas; and

    a receiver for receiving a transmitted signal, comprising two antennas for receiving said transmitted signal, a demodulator, receiver filter and receiver processor for demodulation, filtering and processing of a received TDMA signal wherein said receiver filter for filtering of said received TDMA signal is mis-matched to said transmit filter for filtering of said second bit rate TDMA signal and said receiver processor and filter for processing and filtering provides processed received baseband mis-match filtered cross-correlated in-phase and quadrature-phase TDMA signal.

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