| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a multi-carrier CDMA (code division multiple access) receiver whose device scale is small by suppressing the interference of another station user by a small number of pilot symbols. SOLUTION: A received signal is demultiplexed into a data signal and a pilot signal by a demultiplexing part 11. Through a guard interval removing part 12 and a series-parallel conversion part 14, the data signal is converted into the complex amplitude of a sub-carrier with a discrete Fourier transformation part 15, multiplied by weight vector (w) according to the chip 1 to L of a spread code by multipliers 161 to 16L, add-composed by an adder 17 and level-decided by a QPSK (quadri-phase shift keying) demodulator 18 to be reception data. A channel estimation part 13 calculates the impulse response of a pilot symbol, and a discrete Fourier transformation part 20 and a weight vector calculation part 21 calculate a correlation matrix R and a correlation vector (v) to obtain w=R<-1> v.</p> |
