Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Techniques for applying modulation constraints to data using periodically changing symbol mappings










Image Number 3 for United States Patent #7030789.

Techniques are provided for applying modulation constraints to data by using periodically changing symbol mappings to replace certain prohibited error prone data patterns. Initially, user data in a first base is mapped to integers of a second base using a base conversion technique. The integers in the second base correspond to symbols. Subsequently, periodically changing symbol mappings are performed during which prohibited symbols generated during base conversion are mapped to permitted symbols. The periodically changing symbol mappings occur in multiple phases, and the prohibited symbols are different in each phase. The resulting data is processed by a precoder in some embodiments.








 
 
  Recently Added Patents
High-density fiber optic modules and module housings and related equipment
Methods and systems for managing electronic messages
Methods and apparatus to determine impressions using distributed demographic information
Wound dressings
Wireless network device including a polarization and spatial diversity antenna system
Avoiding conflict in update in distributed environment employing multiple clients
Method and apparatus for interactive distribution of digital content
  Randomly Featured Patents
Jigsaw break-away basketball backboard and hoop
Drilling fluid recovery and cuttings processing system
Bioactive bicyclic aromatic compounds and pharmaceutical/cosmetic compositions comprised thereof
System and method for enabling software monitoring in a computer system
Object-oriented framework for the generic collection of system data
Radar ECM simulator using no electrical connection to radar
Apparatus and method of improving beam shaping and beam homogenization
Plasma process utilizing an electrostatic chuck
IIR transmit filter for OFDM baseband processor
Stackable and laterally interlockable chairs