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
Magnetic levitation motor used in lens module
System for controlled release of an active principle and method for preparation
Liquid crystal display having wide viewing angle
Method of preparing enteric hard capsule and enteric hard capsule prepared thereby
Embedded bonding pad for image sensors
  Randomly Featured Patents
Method for generating a correlated sequence of variates with desired marginal distribution for testing a model of a communications system
EMI shielded chassis for electrical circuitry
Method for displaying partial stroke of washing machine
Combustion apparatus
Scroll type fluid handling machine
Vapor-compression refrigerant cycle and lock detection device of compressor
Portable display system
Key holder
ESD protection system for multi-power domain circuitry
Particle shielded R. F. connector for a plasma enhanced chemical vapor processor boat