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
Blocky hydroxyethylcellulose, derivatives thereof, process of making and uses thereof
Image processing device, printing apparatus, image processing method, and method of producing printing apparatus
Apparatus, method and program for image receipt, processing, conversion, and delivery to and from a plurality of external apparatuses
Radiation detector array
Method, system and computer program product for verifying floating point divide operation results
Rear body panel cover for a motor vehicle
Pharmaceutical composition for treating CAPRIN-1 expressing cancer
  Randomly Featured Patents
Wireless IC device, wireless IC module and method of manufacturing wireless IC module
Pharmaceutical composition for the treatment of cardiovascular and cerebrovascular diseases
Fused carbon nanotube-nanocrystal heterostructures and methods of making the same
Amputation apparatus
Iontophoretic drug delivery system, including method for activating same for attachment to patient
Optical reader system and method for monitoring and correcting lateral and angular misaligments of label independent biosensors
Bottle portion
Method and apparatus for extracting and evaluating mutually similar portions in one-dimensional sequences in molecules and/or three-dimensional structures of molecules
Follower assembly for hand grease guns
Battery saver for a tone coded signalling system