Resources Contact Us Home
Channel code decoding for the CDMA forward link

Image Number 6 for United States Patent #6996385.

Channel coding is used on the forward link of a CDMA cellular telephone network to allow the CDMA mobile channel decoder to perform error correction. On a wireless link, channel code performance is improved by providing the channel decoder with an estimate of the reliability of each received symbol. This reliability information is typically the ratio of desired signal energy to interference plus noise variance at the channel decoder input. This invention improves CDMA mobile channel decoder performance using a new technique for calculating more accurate estimates of the signal to interference plus noise ratio at the input of the mobile channel decoder.

  Recently Added Patents
Protocol delay measuring device and protocol delay measuring method
Image processing apparatus
Fluorescent proteins
Single mode optical fiber with improved bend performance
Soliciting first party in communication session to maintain call when degradation of connection to second party is anticipated
Aqueous composition with agents to inhibit water evaporation
Secure data exchange between data processing systems
  Randomly Featured Patents
Frame assembly for a barbecue grill
Cosmetic compositions containing optical brighteners
One shot heat exchanger burner
Reconfigurable workholding fixture
Chair frame
Vehicle mirror
Boron-containing small molecules
High viscosity silicone blending process
Advanced features on a real-time exchange system
Ink stick with electronically-readable memory device