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
Method for using a super-slippery thin layer characterized by the method for making same
Catalyst and process of hydrocarbon feedstock reformation to hydrogen and carbon monoxide
Laser receiver for detecting a relative position
Spreading technique applied to broadband mobile communications by satelite relying on DVB-RCS
Clostridium chauvoei polypeptide, DNA encoding the polypeptide and a vaccine comprising the polypeptide
Solar power system with communication network utilizing magnetic fields
Stock analysis method, computer program product, and computer-readable recording medium
  Randomly Featured Patents
Luggage carrier with illuminating means
Method for operating a panoramic optical system
Stabilized, biocompatible gold nanoparticles and enviro-friendly method for making same
Methane conversion
Processing additives for blended cements
Semiconductor device having electrostatic discharge protection circuit and method of manufacturing the same
Process for producing olefin copolymerization catalyst and process for producing olefin copolymer
Dual storage cell memory
Systems and methods for replacing a toner hopper spool cover
Method of treatment of bone-related disorders or conditions