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OFDM signal transmitting method and transmitter and receiver thereof

  • US 20070147527A1
  • Filed: 12/20/2006
  • Published: 06/28/2007
  • Est. Priority Date: 12/26/2005
  • Status: Active Grant
First Claim
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1. A method of transmitting an orthogonal frequency division multiplexing (OFDM) signal comprising:

  • allocating a first channel estimation preamble signal and a second channel estimation preamble signal for channel response estimation respectively to a +kth subcarrier and a −

    kth subcarrier (k is at least one arbitrary integer) from a center frequency of a first OFDM signal;

    allocating a first pilot signal and a second pilot signal for residual phase offset estimation respectively to the +kth subcarrier and the −

    kth subcarrier from a center frequency of a second OFDM signal; and

    transmitting the first OFDM signal and the second OFDM signal respectively in different time zones using at least one antenna, wherein a first product of a complex conjugate of the first channel estimation preamble signal and the second pilot signal is equal to a second product of the second channel estimation preamble signal and the complex conjugate of the first pilot signal.

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