Resources Contact Us Home
FFT-size detection and cell search for a cellular communication system

Image Number 5 for United States Patent #8116806.

An apparatus and method for cell acquisition and downlink synchronization acquisition in an OFDMA wireless communication system are provided. In an SS apparatus in a broadband wireless communication system, a preamble subcarrier acquirer extracts subcarrier values having a preamble code from an FFT signal. A multiplier code-demodulates the subcarrier values by multiplying the subcarrier values by a preamble code. A correlator calculates a plurality of differential correlations in the code-demodulated signal. An IFFT processor IFFT-processes the differential correlations by mapping the differential correlations to subcarriers. A maximum value detector detects a maximum value from the IFFT signal and calculates a timing offset using an IFFT output index having the maximum value.

  Recently Added Patents
Controlling ring-back tone output prior to a communication connection in mobile terminal
Sensor chip, sensor cartridge, and analysis apparatus
Method for switching between virtualized and non-virtualized system operation
Laser marking of a card
PC secure video path
Etch resistant clearcoat
Configurable caged ball insert for a downhole tool
  Randomly Featured Patents
Spa table for face and body treatments and massages
Caloric and/or carbohydrate calculator
Air motor having instant torque and low air consumption
Method and apparatus for changing execution code for a microcontroller on an FPGA interface device
Resistor isolated burn-in socket board
Television system having aperture correction
Weighing scale with level compensating foot assembly
Method of bootstrapping an authenticated data session configuration
Method for preparing a pillared layered oxide material
Steam generator