| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology for reducing power consumption at the time of transmitting a pilot signal, by calculating transmission path response at a high frequency.SOLUTION: A transmitter includes an OFDM modulation unit 13 including a pilot signal insertion unit 136 for inserting a significant pilot signal and a no-signal pilot signal into first and second transmission signals; inserting the significant pilot signal, a code-inverted pilot signal, and the no-signal pilot signal into third and fourth transmission signals; inserting the no-signal pilot signal into the first and third transmission signals at the same predetermined position; inserting the no-signal pilot signal into the second and fourth transmission signals at a position differing from the same predetermined position; and inserting the significant pilot signal and the code-inverted pilot signal into the third and fourth transmission signals so that the signals are arranged alternately with respect to time and frequencies.SELECTED DRAWING: Figure 2 |
