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
Synergistic fungicidal interactions of 5-fluorocytosine and other fungicides
Apparatus and method for information display of portable device
Information processing apparatus and method
System and method for improving cache efficiency
Lettuce sister lines PX06514083, PX06514153, PX06514201 and PX06514204
Test framework of visual components in a multitenant database environment
Piperazinyl methyl phenyl cyclohexane compound
  Randomly Featured Patents
Focused optical beam encoder of position
Methods, systems, and products for timed ring suppression
Method for machining tooth flanks of workpieces with a profiled shaped tool
Semiconductor device having lower leakage current between semiconductor substrate and bit lines
Electrical board game apparatus
Musical instrument
Stencil and method for depositing material onto a substrate
Ocean current electrical generating system
Magnet arrangement for a planar magnetron
3-amino-2,3-dihydro-1-benzoxepine compounds and pharmaceutical compositions containing them