OFDM signal transmitting method and transmitter and receiver thereof
First Claim
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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Abstract
A transmitting method of OFDM signal includes allocating first and second channel estimation preamble signals for channel response estimation respectively to +kth and −kth subcarriers from center frequency of first OFDM signal, allocating first and second pilot signals for residual phase offset estimation respectively to +kth and −kth subcarriers from center frequency of second OFDM signal, transmitting first and second OFDM signals respectively in different time zones using at least one antenna, where, first product of complex conjugate of first channel estimation preamble signal and second pilot signal is equal to second product of second channel estimation preamble signal and complex conjugate of first pilot signal.
34 Citations
15 Claims
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1. A method of transmitting an orthogonal frequency division multiplexing (OFDM) signal comprising:
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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. - View Dependent Claims (2, 3)
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4. A transmitter of the orthogonal frequency division multiplexing (OFDM) signal comprising:
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a first allocation unit configured to allocate 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;
a second allocation unit configured to allocate 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
,a transmission unit configured to transmit 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 a complex conjugate of the first pilot signal. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification