Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
OFDM pilot tone tracking for wireless LAN










Image Number 12 for United States Patent #7551677.

A pilot phase tracking loop for an OFDM receiver including a phase rotator receiving an incoming signal, a fast Fourier transform coupled to a phase rotator output, and a pilot phase error metric including a discrete Fourier transform portion coupled to the phase rotator output. The pilot phase error metric determines a phase error estimate associated with a received OFDM symbol, e.g., a data symbol, from the phase rotator output. A loop filter is coupled to the pilot phase error metric output and an oscillator is coupled to the loop filter output. The oscillator output is coupled to the phase rotator to adjust the phase of subsequent OFDM symbols of the incoming signal. Phase noise introduced by a radio portion of the OFDM receiver and OFDM transmitter is reduced by the baseband portion of the OFDM receiver improving OFDM signal tracking under poor SNR conditions.








 
 
  Recently Added Patents
Method for generating codewords
Strategic planning management
Bluetooth headset
System and method of verification of analog circuits
Method of transmitting data using spatial multiplexing
Author signatures for legal purposes
Flame-proofed thermoplastic compositions
  Randomly Featured Patents
Kinetic sculpture
TNF-.alpha. production inhibitors
Apparatus for receiving rod members
Rack assembly
Method of producing a rare-earth permanent magnet
Circuits for detecting framing bits in a t.d.m. bit stream
Magnetic disc read head positioning device and method
Manufacturing method for magnetic head suspension
Apparatus for producing pumpable foodstuffs, in particular processed cheese
Method and system for user authentication and identification using behavioral and emotional association consistency