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Wireless communication device and method for reducing carrier frequency offsets over a simultaneous multi-user uplink in a multicarrier communication network

  • US 7,426,199 B2
  • Filed: 06/29/2005
  • Issued: 09/16/2008
  • Est. Priority Date: 06/29/2005
  • Status: Active Grant
First Claim
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1. A multicarrier wireless communication device comprising:

  • carrier frequency offset (CFO) estimating circuitry to generate a CFO estimate from a received polling frame; and

    CFO application circuitry to apply the CFO estimate to multicarrier signals prior to transmission,wherein the wireless communication device is one of a plurality of wireless communication stations,wherein the polling frame is addressed to each wireless communication station of the plurality,wherein, in response to the polling frame, each wireless communication station concurrently transmits an uplink packet based on information in the polling frame, andwherein each wireless communication station generates a CFO estimate from the polling frame and applies the CFO estimate to the station'"'"'s simultaneous transmissions of the uplink packet.

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