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

Image Number 6 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
Battery comprising circuitry for charge and discharge control, and method of operating a battery
Image sensing apparatus and method of controlling the image sensing apparatus
Performance metrics processing for anticipating unavailability
Rose plant named `Esm R068`
System and method for parallel video processing in multicore devices
Multiple-frequency inversion method and control apparatus for internal combustion engine driven generator
  Randomly Featured Patents
Hierarchy modification
Patient transporting vehicle
Hydrophilic diamond particles and method of producing the same
Inkjet printer
Carrying case for personal articles
Method and a device for controlling source specific data flow
Functionalizing carbohydrate derivatives by base-induced .beta.-eliminatiom forming bioactive derivatives containing hydroxy-diene subunits
Crowned conical bearing
Hand-held data capture system with interchangable modules
Method for repairing attenuated phase shift masks