Resources Contact Us Home
Method and apparatus for robust automatic frequency control in CDMA systems with constant pilot signals

Image Number 3 for United States Patent #8107512.

There is provided a method for generating an error signal for an automatic frequency control (AFC) loop in a Code Division Multiple Access (CDMA) system. Sign information relating to phase differences in received pilot signals is accumulated. In one embodiment, the accumulated sign information is compared against predetermined threshold levels. The error signal is generated when at least one of the predetermined threshold levels is satisfied. In a second embodiment, the accumulated sign information is decimated. An output of the decimating step is utilized as the error signal for the AFC loop.

  Recently Added Patents
Content distribution system, mobile communication terminal device, and computer readable medium
Device and method for processing input data of protective relay
Position detection device, pointing device and input device
Methods and systems for automated backups and recovery on multi-os platforms using controller-based snapshots
Method and system for reciprocal mixing cancellation of wideband modulated blockers
Systems and methods for image stream processing
Semiconductor device having a triple gate transistor and method for manufacturing the same
  Randomly Featured Patents
Method of determining exposure condition
Meter calibration accuracy
Sorbent compositions and processes for reducing mercury emissions from combustion gas streams
Glove box damper system
Self-aligned stack formation
Non-aqueous electrolyte battery and method of manufacturing the same
Remote control
Musical tone control system for grand-type piano
Method of attaching a removable cabinet for front-serviceable appliances