Ultra efficient modulation and transceivers

• US 7,035,344 B2
• Filed: 12/07/2000
• Issued: 04/25/2006
• Est. Priority Date: 08/31/1998
• Status: Expired due to Fees

• Current Assignee: Kamilo Feher
• Original Assignee: Kamilo Feher
• Inventors: Feher, Kamilo
• Primary Examiner(s): VO, DON NGUYEN
• Application Number:
  US09/732,953
• Publication Number:
  US 20010016013A1
• Time in Patent Office: 1,965 Days
• Field of Search: 375/216, 375/238, 375/259, 375/295, 375/360, 375/219, 375/220, 375/356, 327/100, 327/124, 327/143, 327/144, 327/145, 341/143, 713/400, 713/501
• US Class Current: 375/271
• CPC Class Codes: G06F 1/04 Generating or distributing clock signals or signals derived directly therefrom
• CPC Class Codes: H04B 2201/70703 using multiple or variable rates
• CPC Class Codes: H04L 25/4902 Pulse width modulation; Pulse position modulation
• CPC Class Codes: H04L 27/00 Modulated-carrier systems
• CPC Class Codes: H04L 27/0004 using wavelets
• CPC Class Codes: H04L 27/18 Phase-modulated carrier systems, i.e. using phase-shift keying H04L27/32 takes precedence
• CPC Class Codes: H04L 27/2637 with direct modulation of individual subcarriers
• CPC Class Codes: H04L 27/34 Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
• CPC Class Codes: H04L 7/0008 Synchronisation information channels, e.g. clock distribution lines

Abstract

Ultra Efficient Modulation-Demodulation (modem) and Transmitters-Receivers (transceivers) for high spectral efficient signal generation and processing methods and implementations. Embodiments include Clock Modulated (CM) and Shaped Clocked (SC) transceivers designated as Feher Keying (FK), Feher Quadrature Shift Keying (FQPSK) and Feher Quadrature Modulation (FQAM). In the FK modulator, clock converted and clock shaped signals are processed and generated. These are based on the input data signal patterns.

Claims

1. A clock modulated signaling system comprising:

an input data interface means to provide control signal generation and selection means of shaped clock signals;

a quadrature modulator for quadrature modulating the shaped clock baseband signal;

an interface means to provide signal processing means for modulating the clock modulated baseband signal by means of a cross-correlated quadrature modulator system;

an output amplifier means to connect the cross-correlated quadrature modulated signal to the demodulator;

demodulation means to demodulate the received quadrature modulated signal; and

signal processor means to decode and regenerate the shaped clock signals.

2. A method of signaling using clock modulated signals, said method comprising:

selecting at least one shaped clock signal;

cross-correlating and quadrature modulating said selected at least one shaped clock signal;

amplifying said cross-correlated quadrature modulated signal;

transmitting said amplified cross-correlated quadrature modulated signal;

receiving said transmitted amplified cross-correlated quadrature modulated signal;

demodulating said received signal; and

decoding said received demodulated signal and regenerating said clock signal.