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
CMOS image sensor
Carbon blacks having low PAH amounts and methods of making same
Method for producing carrier on which microorganisms capable of conducting multiple parallel mineralization are immobilized, column reactor and solid medium for cultivating plants
Digital broadcasting system and method of processing data in digital broadcasting system
Circuit design approximation
Chair structure
Preventative traffic congestion social networking improvement system within a community
  Randomly Featured Patents
Light-emitting element and method of making the same
Stencil holder and kit and method of making an image
Methods and apparatus for managing data distribution in a network
Horizontal position error correction mechanism for electronic level
Power transfer switch assembly
Width measuring device
Control device for electronic games
Method for securing personal database information in cellular and personal communication systems
System and method for intuitively indicating signal quality in a wireless digital communications network
Multistage mixer-settler centrifuge