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
Composite high reflectivity layer
System and method for multi-threaded OFDM channel equalizer
Detecting the type of NAT firewall using messages
Method and apparatus for supporting HARQ
Campanula plant named `PKMM03`
Closed cell culture system
Cardiac function management integrating cardiac contractility modulation
  Randomly Featured Patents
Polymeric piezoelectric ultrasonic probe
Vehicle seat
Method and apparatus for process control, tension control, and testing of magnetic media
Apparatus for translating a voltage
Belt having a meandering prevention guide and image forming apparatus having the same
Binocular's focus or zoom adjusting knob
Drive mechanism employing electromechanical transducer and drive method therefor
System for determining the concentration of an analyte
Process for the introduction of hydrophobic photographic additives
Rate responsive pacemaker and pacing method