QAM CDMA and TDMA Communication Methods

• US 20120321007A1
• Filed: 09/03/2012
• Published: 12/20/2012
• Est. Priority Date: 08/10/1998
• Status: Active Grant

• Current Assignee: Kamilo Feher
• Original Assignee: Kamilo Feher
• Inventors: Feher, Kamilo
• Granted Patent: US 8,693,523 B2
• Time in Patent Office: Days
• US Class Current: 375/261
• CPC Class Codes: A61B 5/0015 characterised by features of the telemetry system
• CPC Class Codes: A61B 5/0022 Monitoring a patient using a global network, e.g. telephone networks, internet
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/024 Detecting, measuring or recording pulse rate or heart rate A61B5/0205, A61B5/021 take precedence
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: G16H 10/60 for patient-specific data, e.g. for electronic patient records
• CPC Class Codes: G16H 15/00 ICT specially adapted for medical reports, e.g. generation or transmission thereof
• CPC Class Codes: H04B 1/1036 with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters H04B1/123 takes precedence; filter circuits H03H
• CPC Class Codes: H04B 1/69 Spread spectrum techniques
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• CPC Class Codes: H04B 1/709 Correlator structure
• CPC Class Codes: H04B 2201/70715 with application-specific features
• CPC Class Codes: H04B 2201/70716 Quadrature
• CPC Class Codes: H04B 7/04 using two or more spaced independent antennas
• CPC Class Codes: H04B 7/18504 Aircraft used as relay or high altitude atmospheric platform
• CPC Class Codes: H04B 7/2628 using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] H04B7/2618 takes precedence
• CPC Class Codes: H04J 11/00 Orthogonal multiplex systems, e.g. using WALSH codesH04J13/00 takes precedence
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 27/2017 in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation H04L27/201 takes precedence
• CPC Class Codes: H04L 27/2071 in which the data are represented by the carrier phase, e.g. systems with differential coding
• CPC Class Codes: H04L 27/2627 : Modulators
• CPC Class Codes: H04L 27/2649 : Demodulators
• CPC Class Codes: H04L 5/0007 : the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/1453 : of modulation type
• CPC Class Codes: H04M 7/006 : Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42
• CPC Class Codes: H04W 12/06 : Authentication
• CPC Class Codes: H04W 12/79 : Radio fingerprint
• CPC Class Codes: H04W 4/023 : using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
• CPC Class Codes: H04W 4/025 : using location based information parameters
• CPC Class Codes: H04W 4/90 : Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 64/00 : Locating users or terminals or network equipment for network management purposes, e.g. mobility management
• CPC Class Codes: H04W 88/02 : Terminal devices
• CPC Class Codes: H04W 88/06 : adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: Y02A 90/10 : Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Abstract

Filtering and modulating a first rate data signal into a Quadrature Amplitude Modulated (QAM) Code Division Multiple Access (CDMA) and a second rate data signal into a Time Division Multiple Access (TDMA) modulated signal and selecting between the transmission of the CDMA and TDMA modulated signals. A method for nonlinearly and linearly amplifying TDMA and CDMA signals. A diversity receiver and demodulator method for receiving and demodulating transmitted modulated signals. Processing, transmit baseband filtering and modulating signals for providing cross-correlated in-phase and quadrature-phase Gaussian filtered Gaussian Minimum Shift Keying (GMSK) and other cross-correlated modulated signals and spread spectrum Quadrature Phase Shift Keying (QPSK) modulated signals. Transmit processing and filtering for providing time division multiplexed (TDM) Gaussian filtered baseband signal and Orthogonal Frequency Division Multiplexed (OFDM) in-phase and quadrature-phase baseband modulated signal to a cellular network and to separate wireless network.

Claims

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 Quadrature Amplitude Modulated (QAM) Code Division Multiple Access (CDMA) signal;

filtering a second bit rate signal by a second transmit filter and modulating by a modulator said second bit rate signal into a modulated Time Division Multiple Access (TDMA) signal, said second bit rate is different from said first bit rate;

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

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

receiving and demodulating by two receive antennas and a demodulator a transmitted modulated TDMA and CDMA signal.

2. The method of claim 1 wherein said receiving and demodulating by two receive antennas and a demodulator comprises step of receive filtering and receive processing for filtering, processing and providing demodulated cross-correlated in-phase and quadrature-phase filtered signal, wherein said receive filtering is by a receive filter, said receive filter is a mis-matched filter to said first transmit filter.

3. The method of claim 1, further comprising step of processing said first bit rate signal into a processed Code Division Multiple Access (CDMA) cross-correlated in-phase and quadrature-phase filtered baseband signal and providing said processed CDMA cross-correlated filtered baseband signal to said modulator for modulating a first bit rate signal into a Gaussian filtered modulated signal, and processing said first bit rate signal into a processed Time Division Multiple Access (TDMA) cross-correlated filtered baseband signal to said modulator for modulating and providing said processed TDMA cross-correlated filtered baseband signal to said modulator for modulating by said modulator, wherein said receiving and demodulating includes step of providing in a demodulator a demodulated and adaptive equalized signal and step of generating a Pseudo-Error (PE) detector generated control signal for control of said diversity receiver and said demodulator comprises a receive filter for receive filtering of said received and demodulated signal, wherein said receive filter is mis-matched to said first transmit filter, said receiver for receiving the transmitted signal comprises a liner Automatic Gain Control (AGC) circuit operated in a liner mode and a non-linear AGC circuit operated in a non-linear mode for reception and demodulation of said transmitted modulated signal.

4. The method of claim 1, wherein said first transmit filtering provides a time division multiplexed (TDM) Gaussian filtered baseband signal to said modulator for modulating Gaussian filtered modulated signal and further comprising step of processing said first bit rate signal into a processed cross-correlated time division multiple access (TDMA) in-phase and quadrature-phase signal and into a processed cross-correlated filtered Orthogonal Frequency Division Multiplex (OFDM) in-phase and quadrature-phase signal.

6. The method of claim 1 wherein said Quadrature Amplitude Modulated (QAM) signal comprises Orthogonal Frequency Division Multiplexed (OFDM) in-phase and quadrature-phase baseband modulated signal.

7. The method of claim 1 wherein said first transmit filter provides cross-correlated in-phase and quadrature-phase filtered baseband signal and said second transmit filter provides Orthogonal Frequency Division Multiplexed (OFDM) filtered signal.

8. The method of claim 1 wherein said first transmitter and second transmitter transmit in different radio frequency (RF) bands.