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
Bio-pesticide and method for pest control
Real ear measurement system using thin tube
System and method for netbackup data decryption in a high latency low bandwidth environment
Link establishment in a wireless communication environment
Vanadium, cobalt and strontium additives for use in aluminum back solar cell contacts
Lipoprotein analysis by differential charged-particle mobility
Alleviation of laser-induced damage in optical materials by suppression of transient color centers formation and control of phonon population
  Randomly Featured Patents
Visible-to-infrared converter light valve
Wideband telephone line interface circuit
Anchoring shaft for joint endoprosthesis
Optical pulse-coupled artificial neurons
Aluminum chelate complex for organic EL material
Compound inhibiting dipeptidyl peptidase IV
Electronic thermal relay and appropriate thermal element
Device for dampening vibration and noise in hydraulic installations
Automated implementation of non-arithmetic operators in an arithmetic logic cell
Treatment of acquired immune deficiency syndrome with thymus extract