Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Coding technique in discrete multi-tone (DMT) based communications systems










Image Number 10 for United States Patent #6580761.

In an Asymmetric Digital Subscriber Loop (ADSL) Discrete Multi-Tone (DMT) system, ADSL DMT equipment includes an encoder that operates on a DMT input signal representing .function. symbols/sec. to generate, for transmission, a DMT output signal representing N.function. symbols/sec., where N>1, and where each symbol from the DMT input signal is generated in a redundant form in the DMT output signal. In one example of a redundant form, each symbol from the DMT input signal is repeated in N consecutive symbol intervals in the DMT output signal. In another example of a redundant form, every N DMT input symbol values are transmitted in 2N consecutive symbol intervals in the DMT output signal. These 2N consecutive symbols in the DMT output signal include 1) N symbols whose values equal the respective N DMT input symbol values and 2) N symbols whose values are a function of the respective N DMT input symbol values.








 
 
  Recently Added Patents
Code conversion apparatus, code conversion method, and computer product
Information repository search system
Selection of system parameters based on non-acoustic sensor information
Apparatus and method for weighing an item of mail during transport through a sorting installation and having an anti-vibration device
Methods and systems for sending messages regarding an emergency that occurred at a facility
Interest point detection
Solid state lighting circuit and controls
  Randomly Featured Patents
Effect powder coatings
Catalyst System for the trimerization of olefins
Method for processing a radar echo signal
Compositions and methods for diagnosis of diseases associated with actinobacillus actinomycetemcomitans infection
Method for resealing a toner cartridge
Pull-to-release type latch mechanism for removable small form factor electronic modules
Smart card based system for telephone-securized transactions
Voltage-clipping device with high breakdown voltage
Effecting selectivity of silicon or silicon-germanium deposition on a silicon or silicon-germanium substrate by doping
Pharmaceutical composition and method for treating cachexia in humans due to cancer