US7079584B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
OFDM, CDMA, spread spectrum, TDMA, cross-correlated and filtered modulation
Assignee: Quarterhill Inc
•
Filing: 2005-04-14
•
Granted: 2006-07-18
•
Expires: 2025-04-14
Abstract
Abstract Modulators for switched or switched and combined Orthogonal Frequency Division Multiplexed (OFDM), Code Division Multiple Access (CDMA), Spread Spectrum, Time Division Multiple Access (TDMA), cross-correlated and filtered systems. A first modulation circuit for receiving input OFDM baseband signals and a second modulation circuit for receiving input in-phase and quadrature-phase cross-correlated baseband signals, TDMA signals, spread spectrum signals, CDMA signals or other filtered signals. One of the switched or combined modulated Radio Frequency (RF) signals and the other switched or combined modulated RF signals are provided to one or more selected transmitters.
Inventors
- 👤 Kamilo Feher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:31
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/0008; H04B; H04B1/00; H04B1/69; H04B7/00; H04B7/02; H04B7/04; H04B7/06; H04B7/0602; H04B7/08; H04B7/0837; H04B7/0842; H04B7/0848; H04B7/0854; H04L1/00; H04L1/20; H04L1/205; H04L25/00; H04L25/02; H04L25/03; H04L25/03006; H04L25/03012; H04L25/03019; H04L25/03025; H04L25/38; H04L25/40; H04L25/49; H04L25/4902; H04L27/0004; H04L27/01; H04L27/18; H04L27/186; H04L27/20; H04L27/2003; H04L27/2007; H04L27/2017; H04L27/32; H04L27/34; H04L5/00; H04L5/0001; H04L5/0003; H04L5/0005; H04L5/0007; H04L5/0008; H04L5/0028; H04L7/00; H04L7/0008; H04B2201/00; H04B2201/69; H04B2201/707; H04B2201/70703; H04B2201/70707; H04L2025/0335; H04L2025/03375; H04L2025/03401; H04L2025/03407; H04L2025/03414; H04L2025/03433; H04L2025/03439; H04L2025/03445; H04L2025/03471; H04L2025/03477; H04L25/03038; H04L25/0305; H04L25/03057; H04L25/0307; H04L27/26; H04L27/2601; H04L27/2626; H04L27/2627; H04L27/2637; H04L5/0014; H04L5/0016
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
95 words
A system comprising: a first radio frequency (RF) quadrature modulation circuit for receiving input in-phase and quadrature-phase cross-correlated baseband signals and for providing a first modulated RF signal; a second radio frequency (RF) quadrature modulation circuit for receiving input Orthogonal Frequency Division Multiplexed (OFDM) in-phase and quadrature-phase baseband signals and for providing a second quadrature modulated RF signal; and a selector for selecting either the first or the second quadrature modulated RF signal or both the first and second quadrature modulated RF signal and providing the selected signal or selected signals to the transmission medium.
Claim 2
Independent Claim
95 words
A system comprising: a first radio frequency (RF) quadrature modulation circuit for receiving input in-phase and quadrature-phase cross-correlated baseband signals and for providing a first modulated RF signal; a second radio frequency (RF) quadrature modulation circuit for receiving input Orthogonal Frequency Division Multiplexed (OFDM) in-phase and quadrature-phase baseband signals and for providing a second quadrature modulated RF signal; and a selector for selecting either the first or the second quadrature modulated RF signal or both the first and second quadrature modulated RF signal and providing the selected signal or selected signals to the transmission medium.
Claim 3
Dependent Claim
88 words
In a radio frequency (RF) modulator network for receiving baseband signals and transmitting RF modulated signals the improvement comprising two or more RF modulator circuits and a selection circuit, the first modulator is for modulation of cross-correlated baseband signals the second modulator is for modulation of Orthogonal Frequency Division Multiplexed (OFDM) baseband signals; the selection device selects either the first or the second modulated RF signal or both the first and second modulated RF signals and provides the selected signal or the selected signals to the transmission medium.
Claim 4
Dependent Claim
88 words
In a radio frequency (RF) modulator network for receiving baseband signals and transmitting RF modulated signals the improvement comprising two or more RF modulator circuits and a selection circuit, the first modulator is for modulation of cross-correlated baseband signals the second modulator is for modulation of Orthogonal Frequency Division Multiplexed (OFDM) baseband signals; the selection device selects either the first or the second modulated RF signal or both the first and second modulated RF signals and provides the selected signal or the selected signals to the transmission medium.
Claim 5
Independent Claim
119 words
A system comprising: a signal peak limiting circuit for receiving an Orthogonal Frequency Division Multiplexed (OFDM) baseband signal and for providing a peak limited Orthogonal Frequency Division Multiplexed (OFDM) baseband signal; a first modulation circuit for receiving said peak limited OFDM baseband signal and for providing a modulated signal; a baseband filter circuit for receiving baseband signals and for providing filtered baseband signals; a second modulation circuit for receiving said baseband filtered signal and for providing a filtered modulated signal; a network for providing either the OFDM modulated signal or the filtered modulated signal or both the OFDM modulated signal and the filtered modulated signal; and connection for connecting the provided signal or provided signals to the transmission medium.
Claim 6
Independent Claim
119 words
A system comprising: a signal peak limiting circuit for receiving an Orthogonal Frequency Division Multiplexed (OFDM) baseband signal and for providing a peak limited Orthogonal Frequency Division Multiplexed (OFDM) baseband signal; a first modulation circuit for receiving said peak limited OFDM baseband signal and for providing a modulated signal; a baseband filter circuit for receiving baseband signals and for providing filtered baseband signals; a second modulation circuit for receiving said baseband filtered signal and for providing a filtered modulated signal; a network for providing either the OFDM modulated signal or the filtered modulated signal or both the OFDM modulated signal and the filtered modulated signal; and connection for connecting the provided signal or provided signals to the transmission medium.
Claim 7
Independent Claim
71 words
A system comprising: a first modulation circuit for receiving Orthogonal Frequency Division Multiplexed (OFDM) in-phase and quadrature-phase baseband signals and for providing a first quadrature modulated signal; a second modulation circuit for receiving Time Division Multiple Access (TDMA) baseband signals and for providing a second modulated signal; and a circuit connecting of either the first or the second modulated signal or both the first and second modulated signals to the transmitter.
Claim 8
Independent Claim
71 words
A system comprising: a first modulation circuit for receiving Orthogonal Frequency Division Multiplexed (OFDM) in-phase and quadrature-phase baseband signals and for providing a first quadrature modulated signal; a second modulation circuit for receiving Time Division Multiple Access (TDMA) baseband signals and for providing a second modulated signal; and a circuit connecting of either the first or the second modulated signal or both the first and second modulated signals to the transmitter.
Claim 9
Independent Claim
98 words
A system comprising: a first quadrature modulation circuit for receiving input Code Division Multiple Access (CDMA) in-phase and quadrature-phase baseband signals and for providing a first quadrature modulated signal; a second quadrature modulation circuit for receiving input Orthogonal Frequency Division Multiplexed (OFDM) in-phase and quadrature-phase baseband signals and for providing a second quadrature modulated signal; a selector for selecting either the first or the second or both the first and second quadrature modulated signal and providing the selected signal to one or more amplifiers; and two or more amplifiers for transmitting one or more amplified selected modulated signals.
Claim 10
Independent Claim
98 words
A system comprising: a first quadrature modulation circuit for receiving input Code Division Multiple Access (CDMA) in-phase and quadrature-phase baseband signals and for providing a first quadrature modulated signal; a second quadrature modulation circuit for receiving input Orthogonal Frequency Division Multiplexed (OFDM) in-phase and quadrature-phase baseband signals and for providing a second quadrature modulated signal; a selector for selecting either the first or the second or both the first and second quadrature modulated signal and providing the selected signal to one or more amplifiers; and two or more amplifiers for transmitting one or more amplified selected modulated signals.
Claim 11
Independent Claim
111 words
A system comprising: a first baseband circuit for receiving baseband signals and for providing spread spectrum baseband signals; a first modulation circuit for receiving said spread spectrum baseband signals and for providing a first modulated signal; a second baseband circuit for receiving and providing signal peak limited Orthogonal Frequency Division Multiplexed (OFDM) baseband signals; a second modulation circuit for receiving said peak limited Orthogonal Frequency Division Multiplexed (OFDM) baseband signals and for providing a second modulated signal; and a device for selecting either the first or the second modulated signal or both the first and second modulated signals and connecting the selected signal or selected signals to one or more transmitters.
Claim 12
Independent Claim
111 words
A system comprising: a first baseband circuit for receiving baseband signals and for providing spread spectrum baseband signals; a first modulation circuit for receiving said spread spectrum baseband signals and for providing a first modulated signal; a second baseband circuit for receiving and providing signal peak limited Orthogonal Frequency Division Multiplexed (OFDM) baseband signals; a second modulation circuit for receiving said peak limited Orthogonal Frequency Division Multiplexed (OFDM) baseband signals and for providing a second modulated signal; and a device for selecting either the first or the second modulated signal or both the first and second modulated signals and connecting the selected signal or selected signals to one or more transmitters.
Claim 13
Independent Claim
102 words
A system comprising: a baseband Time Constrained Signal (TCS) waveform processor and Long Response (LR) filter structure for providing Gaussian shaped waveforms and Gaussian filtered signals; a first modulation circuit for receiving said shaped waveforms and filtered signals and for providing a first modulated signal; a second modulation circuit for receiving input Orthogonal Frequency Division Multiplexed (OFDM) in-phase and quadrature-phase baseband signals and for providing a second modulated signal; and a selector for selecting either the first or the second modulated signal or both the first and second modulated signal and providing the selected signal or selected signals to the transmission medium.
Claim 14
Independent Claim
102 words
A system comprising: a baseband Time Constrained Signal (TCS) waveform processor and Long Response (LR) filter structure for providing Gaussian shaped waveforms and Gaussian filtered signals; a first modulation circuit for receiving said shaped waveforms and filtered signals and for providing a first modulated signal; a second modulation circuit for receiving input Orthogonal Frequency Division Multiplexed (OFDM) in-phase and quadrature-phase baseband signals and for providing a second modulated signal; and a selector for selecting either the first or the second modulated signal or both the first and second modulated signal and providing the selected signal or selected signals to the transmission medium.
Claim 15
Independent Claim
106 words
A system comprising: a first modulation circuit for receiving input Code Division Multiple Access (CDMA) baseband signals and for providing a first modulated signal; a second modulation circuit for receiving input Orthogonal Frequency Division Multiplexed (OFDM) baseband signals and for providing a second modulated signal; a third modulation circuit for receiving filtered input signals and for providing a third modulated signal; a selector for selecting either the first or the second or the third modulated signal or two or more modulated signals and providing the selected signals to one or more amplifiers; and two or more amplifiers for transmitting one or more amplified selected modulated signals.
Claim 16
Independent Claim
106 words
A system comprising: a first modulation circuit for receiving input Code Division Multiple Access (CDMA) baseband signals and for providing a first modulated signal; a second modulation circuit for receiving input Orthogonal Frequency Division Multiplexed (OFDM) baseband signals and for providing a second modulated signal; a third modulation circuit for receiving filtered input signals and for providing a third modulated signal; a selector for selecting either the first or the second or the third modulated signal or two or more modulated signals and providing the selected signals to one or more amplifiers; and two or more amplifiers for transmitting one or more amplified selected modulated signals.
Claim 17
Independent Claim
112 words
A system comprising: a baseband spread spectrum processor and long response (LR) filter circuit for receiving spread spectrum signals for providing filtered spread spectrum signals; a first modulation circuit for receiving said filtered spread spectrum signals and for providing a first modulated signal; a second modulation circuit for receiving input Orthogonal Frequency Division Multiplexed (OFDM) baseband signals and for providing a second modulated signal; a selector for selecting either the first or the second modulated signal or both the first and second modulated signal and providing the selected signal or selected signals to one or more amplifiers; and two or more amplifiers for transmitting one or more selected modulated and amplified signals.
Claim 18
Independent Claim
112 words
A system comprising: a baseband spread spectrum processor and long response (LR) filter circuit for receiving spread spectrum signals for providing filtered spread spectrum signals; a first modulation circuit for receiving said filtered spread spectrum signals and for providing a first modulated signal; a second modulation circuit for receiving input Orthogonal Frequency Division Multiplexed (OFDM) baseband signals and for providing a second modulated signal; a selector for selecting either the first or the second modulated signal or both the first and second modulated signal and providing the selected signal or selected signals to one or more amplifiers; and two or more amplifiers for transmitting one or more selected modulated and amplified signals.
Claim 19
Independent Claim
163 words
A system comprising: a first baseband Time Constrained Signal (TCS) waveform processor and Long Response (LR) filter structure for receiving baseband signals and for providing shaped waveforms and filtered baseband signals; a first modulation circuit for receiving said shaped waveforms and filtered baseband signals and for providing a first modulated signal; a first amplifier operated in a non-linearly amplified (NLA) mode for receiving and amplifying the first modulated signal; a second baseband processor for receiving and providing input Orthogonal Frequency Division Multiplexed (OFDM) baseband signals; a second modulation circuit for receiving said OFDM baseband signals and for providing a second modulated signal; a second amplifier operated in a linear amplification mode for receiving and amplifying the second modulated signal; a selector for selecting either the first or the second modulated signal or both modulated signals and providing the selected signal or selected signals to one or more amplifiers; and two or more amplifiers for transmitting one or more selected modulated and amplified signals.
Claim 20
Independent Claim
163 words
A system comprising: a first baseband Time Constrained Signal (TCS) waveform processor and Long Response (LR) filter structure for receiving baseband signals and for providing shaped waveforms and filtered baseband signals; a first modulation circuit for receiving said shaped waveforms and filtered baseband signals and for providing a first modulated signal; a first amplifier operated in a non-linearly amplified (NLA) mode for receiving and amplifying the first modulated signal; a second baseband processor for receiving and providing input Orthogonal Frequency Division Multiplexed (OFDM) baseband signals; a second modulation circuit for receiving said OFDM baseband signals and for providing a second modulated signal; a second amplifier operated in a linear amplification mode for receiving and amplifying the second modulated signal; a selector for selecting either the first or the second modulated signal or both modulated signals and providing the selected signal or selected signals to one or more amplifiers; and two or more amplifiers for transmitting one or more selected modulated and amplified signals.
Claim 21
Independent Claim
169 words
A system comprising: a first baseband circuit for receiving and providing spread spectrum baseband signals; a first modulation circuit for receiving said spread spectrum baseband signals and for providing a first modulated signal; a first amplifier for receiving and amplifying the spread spectrum modulated signal; a second baseband circuit for receiving and providing peak limited Orthogonal Frequency Division Multiplexed (OFDM) baseband signals; a second modulation circuit for receiving said peak limited OFDM baseband signals and for providing an OFDM modulated signal; a second amplifier for receiving and amplifying the OFDM modulated signal; a third baseband circuit for receiving and providing filtered baseband signals; a third modulation circuit for receiving said filtered baseband signals and for providing a third modulated signal; a third amplifier for receiving and amplifying the filtered modulated signal; a selector for selecting either one or multiple modulated signals and providing the selected signal or selected signals to one or more amplifiers; and two or more amplifiers for transmitting one or more selected modulated and amplified signals.
Claim 22
Independent Claim
169 words
A system comprising: a first baseband circuit for receiving and providing spread spectrum baseband signals; a first modulation circuit for receiving said spread spectrum baseband signals and for providing a first modulated signal; a first amplifier for receiving and amplifying the spread spectrum modulated signal; a second baseband circuit for receiving and providing peak limited Orthogonal Frequency Division Multiplexed (OFDM) baseband signals; a second modulation circuit for receiving said peak limited OFDM baseband signals and for providing an OFDM modulated signal; a second amplifier for receiving and amplifying the OFDM modulated signal; a third baseband circuit for receiving and providing filtered baseband signals; a third modulation circuit for receiving said filtered baseband signals and for providing a third modulated signal; a third amplifier for receiving and amplifying the filtered modulated signal; a selector for selecting either one or multiple modulated signals and providing the selected signal or selected signals to one or more amplifiers; and two or more amplifiers for transmitting one or more selected modulated and amplified signals.
References Cited (Backward Citations)
US4567602A
Cited
US4730344A
Cited
US4745628A
Cited
US4962510A
Cited
US4742532A
Cited
US5185765A
Cited
US5815525A
Cited
US5327455A
Cited
US5299228A
Cited
US5341396A
Cited
US5719899A
Cited
US5719857A
Cited
US5732114A
Cited
US5729570A
Cited
US6167099A
Cited
US6445749B2
Cited
US5812523A
Cited
US6774685B2
Cited
US5930299A
Cited
US5909435A
Cited
US5930303A
Cited
US5920808A
Cited
US6775371B2
Cited
US6175550B1
Cited
US6373902B1
Cited
US6298244B1
Cited
WO1999017995A1
Cited
WO1999019909A1
Cited
US20030161411A1
Cited
US6775324B1
Cited
US6233438B1
Cited
US6301308B1
Cited
US6470055B1
Cited
US6757334B1
Cited
US6665348B1
Cited
US6198777B1
Cited
US6128330A
Cited
US6748022B1
Cited
US20030147655A1
Cited
US6735238B1
Cited
US6748021B1
Cited
US20020058484A1
Cited
US6775254B1
Cited
US20020085641A1
Cited
US6445737B1
Cited
US6774841B2
Cited
US6772063B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-07-17 | 2010-01-16 | 2010-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-07-17 | 2014-01-16 | 2014-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-07-17 | 2018-01-16 | 2018-07-18 | $7700.00 | Window Closed / Lapsed |