JP2010193402A5

JP2010193402A5 -

Info

Publication number: JP2010193402A5
Application number: JP2009038441A
Authority: JP
Filing date: 2009-02-20
Publication date: 2012-05-17
Anticipated expiration: 2029-02-20

Description

一方、ステップＳ５０において、最小の電力が得られたと判定されたとき、位相制御器３８Ｂは、最小の電力が得られたときの位相になるようにＩＦＦＴ３７から出力された非希望信号（＝推定された非希望信号）の位相を制御してＤＡ変換器３９へ出力する。 On the other hand, in step S50, when the minimum power is determine a constant and obtained, the phase controller 38B is the minimum undesired signal outputted from IFFT37 so that the phase at which electric power is obtained (= The phase of the estimated undesired signal) is controlled and output to the DA converter 39.

上述したように、位相制御器３８Ｂは、加算器３３によって加算された受信信号の電力が最小になるように、推定された非希望信号の位相を調整するので、遅延回路３２における遅延時間に誤差が発生しても、受信信号に含まれる非希望信号を正確に抑制できる。その結果、受信信号を高性能に復調できる。 As described above, the phase controller 38 B adjusts the phase of the estimated undesired signal so that the power of the received signal added by the adder 33 is minimized, so that the delay time in the delay circuit 32 is adjusted. Even if an error occurs, an undesired signal included in the received signal can be accurately suppressed. As a result, the received signal can be demodulated with high performance.

１，１０１アンテナ、２，１０２ＢＰＦ、３，３Ａ，３Ｂ，３Ｃ信号抑制回路、４，３１，１０６，１１４ＡＧＣ、５，３４，１０７，１１５ＡＤ変換器、６，６Ａ，１１７復調器、７判定器、８信号切換回路、１０，１０Ａ，１０Ｂ，１０Ｃ，１０Ｄ，１０Ｅ，１０Ｆ，１０Ｇ，１００無線装置、３２，３２Ａ遅延回路、３３加算器、３５，３５ＡＦＦＴ、３６信号除去器、３７ＩＦＦＴ、３８，３８Ａ，３８Ｂ位相制御器、３９，１１０ＤＡ変換器、４０電力測定器、４１周波数特性測定回路、１０３ミキサ、１０４ローカル信号発振器、１０５，１０９ＢＰＦ、１０８信号検出回路、１１１ローパスフィルタ、１１２切替器、１１３減算器、１１６チャネル分離器。 1,101 antenna, 2,102 BPF, 3,3A, 3B, 3C signal suppression circuit, 4,31,10 6,114 AGC, 5,34,10 7,115 AD converter, 6,6A, 1 17 demodulation Unit, 7 decision unit, 8 signal switching circuit, 10, 10A, 10B, 10C, 10D, 10E, 10F, 10G, 100 wireless device, 32, 32A delay circuit, 33 adder, 35, 35A FFT, 36 signal remover 37 IFFT, 38, 38A, 38B Phase controller, 39 , 110 DA converter, 40 Power meter, 41 Frequency characteristic measurement circuit , 103 Mixer, 104 Local signal oscillator, 105, 109 BPF, 108 Signal detection circuit, 111 Low pass filter, 112 switcher, 113 subtractor, 116 channel separator.