Beam generator, beam generating method, and chip

1. A beam generator, comprising a first channel, a second channel, and a signal merging module, wherein:

the first channel comprises a first-channel filter, the first-channel filter filters an input signal to obtain a first filtered signal, and the first filtered signal comprises a desired signal;

the second channel comprises:

a second-channel blocking module for blocking the desired signal in the input signal to obtain a blocked signal,

a compensation filter, connected to the second-channel blocking module, for compensatively filtering the blocked signal to obtain a second filtered signal, and

an adaptive filter, connected to the compensation filter, for adaptively filtering the second filtered signal to obtain a third filtered signal;

wherein the signal merging module is connected to the first-channel filter and the adaptive filter for merging the first filtered signal and the third filtered signal to obtain an output signal.

2. The beam generator according to claim 1 , wherein the second-channel blocking module blocks the desired signal in the input signal using a blocking matrix and the compensation filter is used to compensate for zero values in the blocking matrix.

3. The beam generator according to claim 2 , wherein a transfer function of the compensation filter is obtained from an inverse function of the blocking matrix.

4. The beam generator according to claim 3 , wherein the transfer function of the compensation filter is the inverse function of the blocking matrix.

5. The beam generator according to claim 4 , wherein the blocking matrix is

[

1

1

-

1

-

1

1

-

1

-

1

1

1

-

1

1

-

1

]

and the transfer function of the compensation filter is

H

⁡

(

z

)

=

1

1

-

α

×

z

-

4

,

wherein α is a positive number less than 1.

6. The beam generator according to claim 2 , wherein the output signal is: e(n)=(w q H −w a H ×T H ×B H )×x, wherein, w q is a weight vector corresponding to the first-channel filter, w a is a weight vector corresponding to the adaptive filter, T is a weight vector corresponding to the compensation filter, B is the blocking matrix, and x is the input signal.

7. The beam generator according to claim 6 , wherein the weight vector corresponding to the adaptive filter is: w a =((B×T) H R xx ×B×T) −1 ×(B×T) H ×R xx w q , wherein R xx is an autocorrelation matrix of the input signal.

8. A beam generating method, comprising

filtering an input signal by a first-channel filter to obtain a first filtered signal, the first filtered signal comprising a desired signal;

blocking the desired signal in the input signal by a second-channel blocking module to obtain a blocked signal;

compensatively filtering the blocked signal by a compensation filter to obtain a second filtered signal;

adaptively filtering the second filtered signal by an adaptive filter to obtain a third filtered signal; and

merging the first filtered signal and the third filtered signal to obtain an output signal.

9. A chip, comprising a beam generator, wherein the beam generator comprises a first channel, a second channel, and a signal merging module, wherein:

the first channel comprises a first-channel filter, the first-channel filter filters an input signal to obtain a first filtered signal, and the first filtered signal comprises a desired signal;

the second channel comprises:

a second-channel blocking module for blocking the desired signal in the input signal to obtain a blocked signal,

a compensation filter, connected to the second-channel blocking module, for compensatively filtering the blocked signal to obtain a second filtered signal, and

an adaptive filter, connected to the compensation filter, for adaptively filtering the second filtered signal to obtain a third filtered signal;

wherein the signal merging module is connected to the first-channel filter and the adaptive filter for merging the first filtered signal and the third filtered signal to obtain an output signal.