Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Spread spectrum communications system










Image Number 5 for United States Patent #5303258.

A spread spectrum communications system includes: a transmitter having an input information a modulator for generating a spread spectrum signal in accordance with an input information signal together with a pseudonoise clock signal used to generate a first pseudonoise signal formed of a plurality of chips, a switch for switching on and off a locally generated carrier signal of said input information signal in accordance with the spread spectrum signal, a first means for inverting a phase of the spread spectrum signal when the value of the pseudonoise signal is equal to one, a second means for multiplying the inverted-phase spread spectrum signal by the carrier signal so as to produce a transmit signal at an output of the second means, and an output means for outputting the transmit signal from the second means so that the transmit signal is transmitted from the transmitter; and a receiver which receives the transmit signal from the transmitter, the receiver having a detector for obtaining a baseband signal from the transmit signal received at the detector, and a demodulation part for demodulating the baseband signal with a second pseudonoise signal which is generated synchronously with the transmit signal, so as to reproduce the input information signal.








 
 
  Recently Added Patents
(4947
Sense-amplifier monotizer
System for controlled release of an active principle and method for preparation
Automated pizza preparation and vending system
Apparatus and method for evaluating an activity distribution, and irradiation system
Systems and methods for minimization or elimination of diffusion effects in a microfluidic system
Microwavable bag
  Randomly Featured Patents
Plate
Rotating trimmer head
Floribunda rose plant named `Jacyesp`
Applications and methods for voltage instability predictor (VIP)
Novel amide derivatives, processes for production thereof, and agricultural-horticultural fungicide containing them
Water jet propulsion device for marine vessel
Method for the production of a sample for electron microscopy
Printed circuit board assembly carrier for an optical electrical device
Flexible substrate wide band, multi-frequency antenna system
Compiler-assisted or interpreter-assisted solution to the year 2000 problem with debugging option for computer programs