CN101232298A

CN101232298A - Receiver and method for receiving wireless signal

Info

Publication number: CN101232298A
Application number: CNA2008100059762A
Authority: CN
Inventors: 叶四清; 唐海正; 吕劲松; 杨刚华
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2007-12-27
Filing date: 2008-02-20
Publication date: 2008-07-30
Anticipated expiration: 2028-02-20
Also published as: CN101232298B

Abstract

The embodiment of the invention discloses a receiver, comprising an interference cancellation module and a multidrop rectification and pointwise switching module. The interference cancellation module is used for acting the cancellation process on a processing signal by utilizing a digital in-phase and quadrature IQ signal feedback by the multidrop rectification and pointwise switching module, and the signal after the cancellation process is output to the multidrop rectification and pointwise switching module; the multidrop rectification and pointwise switching module is used for acting the multidrop rectification spreliminary treatment on the signal which is input by the interference cancellation module, the phase-amplitude correction is acted on the processed signal, one digital IQ signal after the phase-amplitude correction is selected according to the switching strategy and is feedback to the interference cancellation module, and the selected digital IQ signal is output. The embodiment of the invention also discloses a method for receiving a radio signal. The embodiment of the invention greatly reduces the interference signal within desired signal bandwidth, and effectively increases the performance of the receiver.

Description

The method of a kind of receiver and reception wireless signal

Technical field

The present invention relates to the wireless receiving technology, relate in particular to the method for a kind of receiver and reception wireless signal.

Background technology

In the mobile communication base station, need receive wireless signal by receiver.In order to improve message capacity, the normal multi-carrier receiver that uses in the mobile communication base station, be to comprise a plurality of wireless carriers in the single radio frequency passage, more specifically, exactly some link of radio-frequency channel such as a coaxial cable in or comprise a plurality of carrier waves in the signal of a pair of differential lines.Referring to Fig. 1, be the carrier wave configuration schematic diagram of multi-carrier receiver in the prior art, be the center with fc among the figure, 5 carrier waves in bandwidth is the scope of B all are useful signals.

The multicarrier configuration of multi-carrier receiver is different according to the concrete condition of mobile communication system.Such as, for the multi-carrier receiver in Wideband Code Division Multiple Access (WCDMA) (WCDMA, the Wideband Code Division Multiple Access) system, at fc=190MHz, the carrier wave that 4 bandwidth of possible configuration are 5MHz in the B=20MHz scope, wherein, B can be described as the useful signal bandwidth of receiver; For another example, for the multi-carrier receiver in global system for mobile telecommunications (GSM, the Global System of Mobil Communications) system, at fc=83MHz, the carrier wave that may sparsely to dispose 4～8 bandwidth in the B=10MHz scope be 200kHz.The centre frequency of these carrier waves may change with the network configuration of mobile communication system, and possible some carrier wave does not dispose.On the described carrier position that does not dispose, and in the useful signal bandwidth all interference signal may appear on other position except that each carrier wave, certainly, and outside the useful signal bandwidth, also interference signal may occur, and the amplitude of described interference signal may be greater than the amplitude of useful signal.Referring to Fig. 2, be the interference schematic diagram in the multi-carrier receiver in the prior art.Interference shown in the figure may be the interference from the base station signal of neighbor cell, also may be the interference of the wireless signal of other non-hope., be the key issue that multi-carrier receiver need solve how effectively with these interference filterings.

In the prior art, adopt band pass filter to come the outer interference signal of useful signal bandwidth of suppression receiver usually.Referring to Fig. 3, be the structural representation of receiver in the prior art.After carrying atmospheric radio waves process antenna 301 receptions of information, be converted to the signal of telecommunication in the coaxial cable, be sent to simulation receive path 302.Simulation receive path logical 302 can carry out the frequency conversion filter amplifying processing to the signal of telecommunication, often comprise low noise amplifier, one or more levels frequency mixer, filter, analog to digital converter (ADC, Analogueto Digital Converter) linearisation and variable gain amplifier, or the like.The signal that receives through antenna 301 is a radiofrequency signal, and the signal behind the frequency mixer in the process simulation receive path 302 is the intermediate-freuqncy signal after frequency reduces.Still have interference through the signal behind the simulation receive path 302, for shown in Figure 2.

Below band pass filter 303 is described.Referring to Fig. 4, be the characteristic schematic diagram of band pass filter in the prior art, it is fc that band pass filter shows as a centre frequency, passband width is the filter of B, in the present embodiment, supposing that the bandwidth of useful signal of receiver is identical with the pass band width of band pass filter 303, all is B.Decay in the band pass filter band is very little, and such as being 0～2dB, band is outer very big with respect to the decay A in the band, such as being 50～70dB.The relation of the signal behind the process simulation receive path 302 and the filtering characteristic of band pass filter as shown in Figure 5.Band pass filter is inhibited referring to Fig. 6 to the outer interference signal of useful signal bandwidth, Fig. 6 is through the signal schematic representation behind the band pass filter 303 among Fig. 3, as can be seen, the interference signal that the band pass filter pass band width is outer, being frequency has obtained bigger inhibition less than the interference signal of fc-B/2 and frequency greater than the interference signal of fc+B/2.Certainly, band pass filter 303 can place other position in the simulation receive path logical 302.

ADC304 exports to Digital Down Convert (DDC, Digital Down Converter) and filtering extraction module 305 after the digital signal.

DDC and filtering extraction module 305 will be carried out down-conversion from the signal of ADC304 input, filtering extraction is handled, and the digital signal after handling is exported to digital received passage back segment 306.

Digital received passage back segment 306 carries out Digital Signal Processing, output bit (bit) stream to the signal of DDC and filtering extraction module 305 inputs.

In realizing process of the present invention, the inventor finds that there is following problem in prior art: the available technology adopting band pass filter comes the method for suppression receiver interference signal, though suppressed the outer interference of useful signal bandwidth, but do not played inhibitory action for the interference in the useful signal bandwidth.

Interference in the useful signal bandwidth will bring problems, for example carry out having following problem when analog-to-digital through the signal behind the band pass filter to above-mentioned:

The signal that input analog-to-digital converter carries out in the analog-to-digital useful signal bandwidth comprises interference signal and carrier signal.Somely disturb the peak that signal and carrier signal sum surpass the analog to digital converter dynamic range, will cause the analog to digital converter overload; On the other hand, as if the minimum point of carrier signal less than the analog to digital converter dynamic range, analog to digital converter will be difficult to detect this carrier signal.Therefore, otherwise make the analog to digital converter overload, then the interference signal of input analog-to-digital converter and useful signal sum can not be higher than the peak of analog to digital converter dynamic range; On the other hand, otherwise make the carrier signal of input analog-to-digital converter too small, then need to amplify carrier signal, thereby make the carrier signal of input analog-to-digital converter be higher than the minimum point of analog to digital converter dynamic range by the gain that increases the simulation receive path.But, also amplified interference signal when amplifying carrier signal, interference signal after the amplification may exceed the analog to digital converter dynamic range greater than the peak of analog to digital converter dynamic range, make the analog to digital converter overload, cause receiver performance to be affected, serious will cause the receiver communication disruption.

Summary of the invention

The embodiment of the invention provides a kind of receiver, and this receiver is the interference signal in the useful signal bandwidth in the suppression receiver effectively.

The embodiment of the invention provides a kind of method that receives wireless signal, and this method is the interference signal in the useful signal bandwidth in the suppression receiver effectively.

A kind of receiver, this receiver comprise interference cancellation module and multiple branch circuit correction and pointwise handover module;

Described interference cancellation module is used to utilize multiple branch circuit to proofread and correct digital homophase and the quadrature IQ signal that feeds back with the pointwise handover module, treats processing signals and offsets processing, and the signal that output offsets after the processing proofreaies and correct and the pointwise handover module for described multiple branch circuit;

Described multiple branch circuit is proofreaied and correct and the pointwise handover module, be used for that the signal by described interference cancellation module input is carried out multiple branch circuit and proofread and correct pre-treatment, signal after handling is carried out amplitude and phase correction and pointwise switching, select digital IQ signal behind one road amplitude and phase correction according to switchover policy again, feed back to described interference cancellation module, and the digital IQ signal output that will select.

A kind of method that receives wireless signal, this method comprises:

Utilize the digital IQ signal of selecting behind the amplitude and phase correction, the interference signal in the useful signal bandwidth in the pending signal of input receiver is offseted processing, obtain offseting the signal after the processing;

Carry out multiple branch circuit and proofread and correct pre-treatment offseting signal after the processing, obtain the digital IQ signal that amplitude and phase correction is not passed through on the M road;

To not carrying out amplitude and phasing through the M way word IQ signal of amplitude and phase correction, select digital IQ signal behind one road amplitude and phase correction according to switchover policy again, the digital IQ signal of selection is the digital IQ signal of selecting behind the described amplitude and phase correction.

From such scheme as can be seen, the embodiment of the invention is by offseting processing with the interference signal in the useful signal bandwidth in the pending signal of input receiver, obtains offseting the signal after the processing; And, obtain digital IQ signal by the signal after offseting, adjust the described processing that offsets in real time, adaptively according to the described digital IQ signal that obtains.Thereby, guaranteed to offset effect, suppressed the interference signal in the useful signal bandwidth in the receiver effectively, improved the performance of receiver.

Description of drawings

Fig. 1 is the carrier wave configuration schematic diagram of multi-carrier receiver in the prior art;

Fig. 2 is the interference schematic diagram in the multi-carrier receiver in the prior art;

Fig. 3 is the structural representation of receiver in the prior art;

Fig. 4 is the characteristic schematic diagram of band pass filter in the prior art;

Fig. 5 be among Fig. 3 through simulation behind the receive path 302 signal and the filtering characteristic of band pass filter concern schematic diagram;

Fig. 6 is through the signal schematic representation behind the band pass filter 303 among Fig. 3;

Fig. 7 is the receiver structure schematic diagram of the embodiment of the invention;

Fig. 8 is the structural representation of first execution mode of interference cancellation module 704 among Fig. 7;

Fig. 9 is the interference cancellation modular structure signal legend one of Fig. 8;

Figure 10 is the interference cancellation modular structure signal legend two of Fig. 8;

Figure 11 is the interference cancellation modular structure signal legend three of Fig. 8;

Figure 12 is the structural representation of second execution mode of interference cancellation module 704 among Fig. 7;

Figure 13 a is the structural representation legend one that multiple branch circuit is proofreaied and correct pre-processing module 707 among Fig. 7;

Figure 13 b is the structural representation legend two that multiple branch circuit is proofreaied and correct pre-processing module 707 among Fig. 7;

Figure 13 c is that the electrical block diagram of 3 gain branch road modules is given an example;

Figure 14 is the structural representation of amplitude and phase correction and pointwise handover module 708 among Fig. 7;

Figure 15 receives the exemplary process diagram of the method for wireless signal for the embodiment of the invention;

Figure 16 receives the method flow legend one of wireless signal for the embodiment of the invention;

Figure 17 receives the method flow legend two of wireless signal for the embodiment of the invention;

Figure 18 receives the method flow legend three of wireless signal for the embodiment of the invention;

Figure 19 receives the method flow legend four of wireless signal for the embodiment of the invention.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in more detail.

Referring to Fig. 7, be the receiver structure schematic diagram of the embodiment of the invention, this receiver comprises antenna 701, simulation receive path upstream 702, band pass filter 703, interference cancellation module 704, simulation receive path stage casing 705, multiple branch circuit correction and pointwise handover module 706 and digital received passage back segment 709.Compare with Fig. 3, increased interference cancellation module 704 among Fig. 7, interference cancellation module 704 will be simulated receive path 302 and be divided into simulation receive path upstream 702 and simulation receive path stage casing 705, and band pass filter 703 can also place in the simulation receive path stage casing 705; And, replaced ADC304 and DDC and the filtering extraction module 305 among Fig. 3 with the multiple branch circuit correction with pointwise handover module 706 among Fig. 7.

Introduce interference cancellation module 704 below.The interior interference signal of useful signal bandwidth that interference cancellation module 704 is used for to the received signal offsets processing, comprises feed forward approach implementation and feedback transmitter implementation.Fig. 8,9,10 and 11 is the structural representation that adopts the interference cancellation module 704 of feed forward approach implementation, and Figure 12 is for adopting the structural representation of the interference cancellation module 704 of feeding back implementation.

Referring to Fig. 8, be the structural representation of first execution mode of interference cancellation module 704 among Fig. 7, interference cancellation module 704 comprises that main channel 81, feedforward branch road 82 and simulation offset module 83.

Main channel 81 offsets module 83 with simulation and links to each other.

Main channel 81 can realize that simulation compensation of delay module is used for that the signal of input main channel is simulated compensation of delay and handles by simulation compensation of delay module.It is for the amount of delay of simulating the generation of compensation of delay module is equated or approximately equal with the amount of delay that feedforward branch road 82 is produced that the simulation compensation of delay is handled.And the amount of delay that simulation compensation of delay module produces is generally fixed.Alternatively, the also subsidiary simple process such as amplification or decay that comprise in the simulation compensation of delay module.Simulation compensation of delay module can be realized that its effect is the delay variation between compensation main channel 81 and the feedforward branch road 82 by surface acoustic wave (SAW, Surface Acoustic Wave) device or inductance capacitance (LC) device.

If the signal of input main channel 81 is a narrow band signal, time delay between main channel 81 and the feedforward branch road 82 is little to the cancellation performance influence that simulation offsets module 83, can not carry out compensation of delay, this moment, the main channel did not comprise simulation compensation of delay module, only the tape handling signal is amplified or simple process such as decay, and painstakingly do not carry out compensation of delay.The bandwidth of described narrow band signal must be far smaller than the inverse of feedforward branch road time-delay, otherwise offsets poor effect.Describedly be far smaller than expression less than 1/10th of the inverse of feedforward branch road time-delay.

Feedforward branch road 82 is used for useful signal to the input signal that transmitted by band pass filter 703 and carries out trap and handle, and sends the signal after handling to simulation and offsets module 83.Described useful signal can be a carrier signal, is that carrier signal describes the embodiment of the invention below with the useful signal.

Simulation offsets module 83, is used for the signal of main channel 81 input is disappeared mutually with the signal of feedforward branch road 82 inputs, offsets signal after the processing that disappeared mutually.

Described disappear mutually can for: the signal of the main channel 81 input signal with 82 inputs of feedforward branch road is carried out addition or subtracts each other processing.Regardless of being addition or subtracting each other processing, all require pending signal to simulate the time-delay that offsets module 83 through main channel 81 back inputs, simulate the time-delay that offsets module 83 with pending signal through the branch road 82 back inputs that feedover, both are identical or approximate identical; And, require to simulate the signal amplitude that offsets module 83 by main channel 81 inputs, with the signal amplitude that is offseted module 83 by the 82 input simulations of feedforward branch road, both are identical or approximate identical.When carrying out addition and handling, offset the signal phase of module 83 by main channel 81 input simulations, with the signal phase that is offseted module 83 by the 82 input simulations of feedforward branch road, both are opposite or approximate opposite, i.e. phase phasic difference 180 degree or approximate 180 degree that differ; Subtract each other when handling, import the signal phase that simulation offsets module 83 by main channel 81, with the signal phase that is offseted module 83 by the 82 input simulations of feedforward branch road, both are identical or approximate identical, i.e. phase phasic difference 0 is spent or approximate 0 degree that differs.

In specific implementation, interference cancellation module 704 has simulation feed forward approach and two kinds of implementations of digital feed forward method, is described respectively below in conjunction with Fig. 9, Figure 10 and Figure 11.

Referring to Fig. 9, be the interference cancellation modular structure signal legend one of Fig. 8.At this moment, interference cancellation module 704 realizes that by the simulation feed forward approach main channel 81 is made up of simulation compensation of delay module 901, feedforward branch road 82 by simulation useful signal trap module 902 with simulate the width of cloth mutually compensating module 903 form.

Simulation compensation of delay module 901 is used for the signal of input main channel is carried out the compensation of delay processing.

Produced time delay in the process to signal processing owing to feedover on the branch road, handled so will carry out compensation of delay to signal on the main channel, arrival is simulated, and the main channel signal that offsets module 83 and the tributary signal that feedovers are synchronous.

Simulation useful signal trap module 902 is used for that the carrier signal of input signal is carried out trap and handles, and extracts interference signal.Simulation useful signal trap module 902 can realize that the trap frequency of trap module is the signal frequency of carrier wave in the feedforward tributary signal with one or more trap module.When simulation useful signal trap module 902 need be carried out trap to the carrier signal of a plurality of frequencies, simulation useful signal trap module 902 was by a plurality of trap module cascades realizations, and each trap module is carried out trap to a carrier wave.

Simulation useful signal trap module 902 can comprise simulation useful signal trap submodule 91 and simulation trap characteristic control submodule 92.

Simulation useful signal trap submodule 91 is used for the carrier signal in the input signal being carried out trap handling under the control of simulation trap characteristic control submodule 92.

Simulation trap characteristic control submodule 92 is used for control simulation useful signal trap submodule 91 and carries out the trap processing.The control of 92 pairs of simulations of simulation trap characteristic control submodule useful signal trap submodule 91 comprises: under the running parameter configuration, control simulation useful signal trap submodule 91 carries out trap to be handled, described running parameter comprises the working frequency points of each carrier wave, and the bandwidth of the working signal on each working frequency points, or the like.

Simulation width of cloth phase compensating module 903 is used to utilize multiple branch circuit to proofread and correct the digital IQ signal that feeds back with pointwise handover module 706, the signal by 902 inputs of simulation useful signal trap module is carried out the width of cloth compensate mutually.This module makes the signal that offseted the signal of module 83 and offseted module 83 by the 82 input simulations of feedforward branch road by main channel 81 input simulation consistent on amplitude and phase place, thereby, guarantee to simulate and offset module 83 and carry out interference signal better and offset processing.Simulation width of cloth phase compensating module 903 comprises that the simulation width of cloth compensates submodule 93 and best simulation width of cloth penalty coefficient calculating sub module 94 mutually mutually.

The simulation width of cloth compensates submodule 93 mutually, is used for the best width of cloth phase penalty coefficient according to 94 inputs of best simulation width of cloth phase penalty coefficient calculating sub module, the signal by 91 inputs of simulation useful signal trap submodule is carried out the width of cloth compensate mutually.Carrying out that the width of cloth compensates mutually is the carrier/interface ratio maximum that offsets the back signal through simulation useful signal trap module 902 in order to make.The ratio of the power sum that described carrier/interface ratio refers to each carrier signal and total interfering signal power.

Best simulation width of cloth phase penalty coefficient calculating sub module 94, be used for utilizing multiple branch circuit to proofread and correct and the digital IQ signal useful signal of pointwise handover module 706 feedbacks and the situation of change between the interference signal, calculating optimum simulation width of cloth phase penalty coefficient sends the simulation width of cloth to and compensates submodule 93 mutually.Preferably, not only proofread and correct the situation of change between the useful signal and interference signal in the signal of exporting with pointwise handover module 706 during calculating optimum simulation width of cloth phase penalty coefficient according to multiple branch circuit, also according to the width of cloth phase compensation way in work at present parameter and the simulation width of cloth phase compensating module etc., the width of cloth of calculating optimum simulation adaptively phase penalty coefficient.

Simulation width of cloth phase compensating module 903 can also place on the main channel.For example, place simulation compensation of delay module 901 and simulation to offset between the module 83, perhaps place before the simulation compensation of delay module 901.

Simulate and offset module 83, be used for the signal of main channel 81 inputs and the signal cancellation of feedforward branch road 82 inputs, the signal that disappears mutually after the processing that disappeared mutually is with the signal input simulation receive path stage casing 705 that disappears mutually.By the signal of feedforward branch road 82 input is interference signal in the useful signal bandwidth that extracts, by both having comprised that useful signal also comprised interference signal in the useful signal bandwidth in the signal of main channel 81 inputs, both are offseted in the module 83 in simulation offset, cut down the interference signal in the useful signal bandwidth, make simulation offset that the signal in the useful signal bandwidth is mainly useful signal in the signal of module 83 outputs.

When realizing interference cancellation module 704 by the simulation feed forward approach, the working frequency points of 902 pairs of each carrier waves of simulation useful signal trap module and the adjustment of bandwidth are dumb.For solving the problem that the simulation feed forward approach is brought to receiver, the embodiment of the invention has proposed to realize by the digital feed forward method scheme of interference cancellation module 704.The digital feed forward method can realize on digital intermediate frequency, also can realize on digital baseband, describes respectively below in conjunction with Figure 10 and Figure 11.

Referring to Figure 10, be the interference cancellation modular structure signal legend two of Fig. 8, it is similar with the corresponding module among Fig. 8 that simulation compensation of delay module 1001 wherein and simulation offset module 83, repeats no more here.

Attenuation module 1004 is used for the signal of input interference cancellation module 704 is carried out attenuation processing, and the signal after handling is inputed to feedforward ADC1005.Attenuation module 1004 is optional.

Selecting attenuation module 1004 is in order to prevent the saturated of ADC1005 that feedover, the saturation point of expansion feedforward branch road.Attenuation module 1004 can be made the fixed attenuation mode, also can make automatic decay mode with further raising performance, described automatic decay mode is automatic gain control (AGC, AautomaticGain Control) mode, this AGC mode can be used the feedfoward control mode, also can use feedback controling mode.If during feedback controling mode, with the feedforward ADC 1005 output feed back to attenuation module 1004, as shown in phantom in FIG..

Feedforward ADC1005, being used for the conversion of signals by attenuation module 1004 inputs is digital signal, the digital signal after the conversion is sent to digital intermediate frequency useful signal trap module 1002.

Digital intermediate frequency useful signal trap module 1002 comprises digital intermediate frequency useful signal trap submodule 101 and digital intermediate frequency trap characteristic control submodule 102, is used for that the carrier signal of input signal is carried out trap and handles, and extracts interference signal.Digital intermediate frequency useful signal trap module 1002 can adopt trapper to realize, described filter is finite impulse response (FIR) (FIR, Finite Impulse Response) filter or infinite impulse response (IIR, Infinite Impulse Response) filter etc.Digital intermediate frequency useful signal trap module 1002 is similar with simulation useful signal trap module 902, and different is to realize the trap processing on digital intermediate frequency, repeats no more here.

Digital intermediate frequency width of cloth phase compensating module 1003 comprises that the digital intermediate frequency width of cloth compensates submodule 103 and optimal digital intermediate frequency width of cloth penalty coefficient calculating sub module 104 mutually mutually, is used for that the feedforward tributary signal by 1002 inputs of digital intermediate frequency useful signal trap module is carried out the width of cloth and compensates mutually.Compensating module 803 is similar mutually with the simulation width of cloth for digital intermediate frequency width of cloth phase compensating module 1503, and different is to realize that on digital intermediate frequency the width of cloth compensates mutually.For example, digital intermediate frequency width of cloth phase compensating module submodule 153 can realize that correspondingly, the optimum number horizontal or vertical scroll of calligraphy phase penalty coefficient that optimal digital intermediate frequency width of cloth phase penalty coefficient calculating sub module 154 calculates is a filter coefficient by FIR or iir digital filter.And the simulation width of cloth compensates submodule 83 mutually and can realize by attenuator and phase shifter, correspondingly, the best simulation width of cloth phase coefficient that calculates of best simulation width of cloth phase penalty coefficient calculating sub module 84 is the controlled quentity controlled variable according to the analog or digital of attenuation and amount of phase shift configuration.

Digital to analog converter (DAC, Digital to Analogue Converter) 1006, the conversion of signals that is used for being compensated submodule 103 inputs mutually by the digital intermediate frequency width of cloth is an analog signal, and described analog signal is sent to intermediate frequency filtering module 1007.

Intermediate frequency filtering module 1007 is used for the signal by 1006 inputs of DAC module is carried out Filtering Processing.After intermediate frequency filtering module 1007, obtain the analog if signal that filtering digital micromirror picture disturbs.Intermediate frequency filtering module 1007 can realize by the LC filter.

Up-conversion module 1008 is used for the signal by 1007 inputs of intermediate frequency filtering module is carried out upconversion process, sends the signal after the up-conversion to simulation and offsets module 83.The frequency of the signal of DAC module 1006 outputs and the frequency of main channel signal may be identical, also may be different.If different, then need the intermediate-freuqncy signal of 1008 pairs of DAC modules of up-conversion module, 1006 outputs be transformed to the main channel in identical intermediate-freuqncy signal; If identical, then do not need up-conversion module 1008.

Referring to Figure 11, interference cancellation modular structure signal legend three for Fig. 8, it is similar with the corresponding module among Fig. 8 that simulation compensation of delay module 1101 wherein and simulation offset module 83, attenuation module 1104, feedforward ADC 1105, control the digital baseband useful signal trap module 1102 that submodule 112 is formed by digital baseband useful signal trap submodule 111 and digital baseband trap characteristic, compensate submodule 113 and the optimal digital base band width of cloth digital baseband width of cloth phase compensating module 1103 formed of penalty coefficient calculating sub module 114 mutually mutually by the digital baseband width of cloth, DAC 1106, intermediate frequency filtering module 1107 and up-conversion module 1108 are similar with the corresponding module among Figure 10, repeat no more here.

Digital Down Converter Module 1109 is used for the signal by feedforward ADC1105 input is down-converted to baseband signal, sends the described baseband signal after the down-conversion to digital decimation filtration module 1110.

Digital decimation filtration module 1110 is used for that the signal by Digital Down Converter Module 1109 inputs is carried out filtering extraction and handles, and sends the signal after handling to digital baseband useful signal trap module 1102.

Digital interpolative filtration module 1111 is used for that the signal that is compensated submodule 113 inputs by the digital baseband width of cloth is mutually carried out filtering interpolation and handles, and sends the signal after handling to Digital Up Convert module 1112.

Digital Up Convert module 1112 is used for the signal by 1111 inputs of digital interpolative filtration module is carried out upconversion process, and the signal after the up-conversion is sent to DAC 1106.The signal that transmits between Digital Down Converter Module 1109 and the Digital Up Convert module 1112 is a digital complex signal, is the IQ signal, just I road and Q road signal.

Realize interference cancellation module 704 by the digital feed forward method, owing to realize the feedforward branch road by numeric field, the adjustment of digital intermediate frequency useful

signal trap module

1002 or 1102 pairs of frequencies of digital baseband useful signal trap module and bandwidth is very flexible, and the filter factor of the digital notch module of change composition digital intermediate frequency useful signal trap module 1002 or digital baseband useful signal trap module 1102 gets final product during adjustment.And the centre frequency of the number of digital notch module, each digital notch module and bandwidth all are variable, can increase new trap point, just increase new digital notch module.Scheme by digital feed forward method realization interference cancellation module 704 has the following advantages:

(1) can on former receiver, change business configuration.Form by 4 digital traps such as, the digital intermediate frequency useful signal trap module 1002 of original receiver or digital baseband useful signal trap module 1102, just can hold 4 carrier waves at most.Because power system capacity enlarges, and can easily 4 carrier waves be upgraded to 5,6 carrier waves or more a plurality of carrier wave.

(2) can between multiple standard, switch.Such as, need be with receiver from receiving the GSM mode switch to receiving the WCDMA pattern, owing to can change the centre frequency and the bandwidth of the digital notch module of forming digital intermediate frequency useful signal trap module 1002 or digital baseband useful signal trap module 1102 easily, switch and get up easily.

(3) can support frequency hopping work.Owing to can change the parameter configuration of the digital notch module of forming digital intermediate frequency useful signal trap module 1002 or digital baseband useful signal trap module 1102 on the numeral easily, and can guarantee to change with signal Synchronization ground, so can support frequency hopping work.

(4) the digital width of cloth of digital intermediate frequency width of cloth phase compensating module 1003 or digital baseband width of cloth phase compensating module 1103 compensates mutually and can realize by different modes.Such as equalization filtering in the band, just each carrier frequency point is all carried out the different width of cloth and compensate mutually, and for the simulation feed forward approach, identical to the adjustment of amplitude in the useful signal bandwidth and phase characteristic.And the digital width of cloth compensates mutually and can carry out the accurate width of cloth and compensate mutually, and this has improved the cancellation performance that simulation offsets module 83.

(5) there is not the device aging problem in the digital notch module of composition digital intermediate frequency useful signal trap module 1002 or digital baseband useful signal trap module 1102, has guaranteed the trap performance.

Referring to Figure 12, the structural representation for second execution mode of interference cancellation module 704 among Fig. 7 comprises that main channel 1201, feedback branch 1203 and simulation offset module 1202.

Main channel 1201 is used for that pending signal is exported to simulation and offsets module 1202.

Feedback branch 1203 is used to utilize multiple branch circuit to proofread and correct the digital IQ signal that feeds back with pointwise handover module 706, produces the analog signal that comprises interference signal in the useful signal bandwidth that is used to offset and do not comprise useful signal, sends simulation to and offsets module 1202.

Simulation offsets module 1202, is used for signal that main channel 1201 is transmitted and the signal that feedback branch 1203 transmits and offsets, and exports to and simulates receive path stage casing 705 offseting signal after the processing.

Feedback branch 1203 comprises optimal digital intermediate frequency width of cloth phase penalty coefficient computing module 1204, multiple spot signal generator module 1205, DAC 1206, intermediate frequency filtering module 1207 and up-conversion module 1208 frequently.

Optimal digital intermediate frequency width of cloth phase penalty coefficient computing module 1204, be used for utilizing multiple branch circuit to proofread and correct and the digital IQ signal useful signal of pointwise handover module 706 feedbacks and the situation of change between the interference signal, calculating optimum width of cloth phase penalty coefficient sends multiple spot signal generator module 1205 frequently to adaptively.

Preferably, situation of change in the digital IQ signal that when calculating optimum simulation width of cloth phase penalty coefficient, not only feeds back between useful signal and the interference signal according to multiple branch circuit correction and pointwise handover module 706, also according to the width of cloth phase compensation way in work at present parameter and the simulation width of cloth phase compensating module etc., the width of cloth of calculating optimum simulation adaptively phase penalty coefficient.

Multiple spot is signal generator module 1205 frequently, be used for producing the digital signal that comprises interference signal in the useful signal bandwidth that is used to offset and do not comprise useful signal, send DAC1206 to according to the best width of cloth phase penalty coefficient that optimal digital intermediate frequency width of cloth phase penalty coefficient computing module 1204 transmits.

DAC1206 is used for the digital signal of multiple spot signal generator module 1205 transmission frequently is converted to analog signal, sends described intermediate frequency filtering module 1207 to.

Intermediate frequency filtering module 1207 is used for the signal by described DAC1206 input is carried out Filtering Processing, sends the signal after handling to up-conversion module 1208.

Up-conversion module 1208 is used for the signal by 1207 inputs of intermediate frequency filtering module is carried out upconversion process, sends the signal after the upconversion process to simulation and offsets module 1202.Intermediate frequency filtering module 1207 is optional.

Interference cancellation module shown in Figure 12 adopts the feedback transmitter implementation, and this mode can be used for interference signal total bandwidth in the useful signal bandwidth in the pending signal less than feedback branch time-delay situation reciprocal.Described feedback branch time-delay refers to, and the signal that is offseted module 1202 outputs by simulation is proofreaied and correct and pointwise handover module 706 and feedback branch 1203 through simulation receive path stage casing 705, multiple branch circuit, offsets the time that module experiences to the input simulation.It is that multifrequency point signal or single frequency point signal are suitable for that this mode is treated processing signals.

Particularly, this mode is the situation of narrow band interference applicable to pending signal, and just, the jamming signal bandwidth in the useful signal bandwidth in the pending signal is the arrowband.Such as, pending signal is the some frequency continuous wave signal that belongs to narrow band interference, because this moment, pending signal had only frequency, amplitude and 3 parameters of phase place, can easily estimate the interference signal in the useful signal bandwidth, utilize multiple branch circuit to proofread and correct and the digital IQ signal useful signal of pointwise handover module 706 feedbacks and the situation of change between the interference signal according to being used for, just can produce the analog signal that comprises interference signal in the useful signal bandwidth and do not comprise useful signal, offset module 1202 and offset processing to offer simulation.

Simulation receive path stage casing 705 after being used for signal to 704 outputs of interference cancellation module and carrying out analog, sends multiple branch circuit to and proofreaies and correct and pointwise handover module 706.Simulation receive path stage casing 705 is optional.

Multiple branch circuit is proofreaied and correct and pointwise handover module 706, be used for that the signal by stage casing 705 inputs of simulation receive path is carried out multiple branch circuit and proofread and correct pre-treatment, signal after handling is carried out amplitude and phase correction and pointwise switching, select one road signal, obtain inputing to the digital IQ signal of interference cancellation module 704, described digital IQ signal is exported to digital received passage back segment 709.

Multiple branch circuit is proofreaied and correct with pointwise handover module 706 and is comprised multiple branch circuit correction pre-processing module 707 and amplitude and phase correction and pointwise handover module 708.Multiple branch circuit is proofreaied and correct pre-processing module 707, is used for the signal process M road step gain process to digital receive path back segment 705 inputs, carries out after the sampling processing, and output M way word signal is given amplitude and phase correction and pointwise handover module 708, and M is a positive integer.Amplitude and phase correction and pointwise handover module 708, be used for and carry out amplitude and phasing by the M way word signal that multiple branch circuit is proofreaied and correct pre-processing module 706 input, utilize switchover policy to select one the tunnel, obtain inputing to the digital IQ signal of interference cancellation module 704, described digital IQ signal is exported to digital received passage back segment 709.Describe with pointwise handover module 706 below in conjunction with Figure 13 a, 13b, 13c and 14 pairs of multiple branch circuits corrections.

Referring to Figure 13 a, be the structural representation legend one that multiple branch circuit is proofreaied and correct pre-processing module 707 among Fig. 7, this structure comprises M gain branch road module 1301, a M ADC1302 and M DDC and filtering extraction module 1303.

M gain branch road module 1301 is used for the signal of simulation receive path stage casing 705 inputs is carried out the step gain process, and the signal after handling is exported to M ADC1302.

M ADC1302 is used for the signal of M gain branch road module 1301 inputs is carried out sampling processing, obtains M way word signal, exports to M DDC and filtering extraction module 1303.

M DDC and filtering extraction module 1303 are used for that the digital signal of M ADC1302 input is carried out the down-conversion sampling and filtering extraction is handled, and send the signal after handling to amplitude and phase correction and pointwise handover module 708.The signal of M DDC and 1303 outputs of filtering extraction module is the IQ signal, just comprises I road and Q road signal.

Simulation receive path upstream 702 is or/and the modules in the simulation receive path stage casing 705 can also be placed at multiple branch circuit proofreaies and correct on each branch road in the front module 707, for example, the ADC linearisation is placed between each branch road ADC and DDC and the filtering extraction module, corresponding to M ADC linearisation 1304 shown in Figure 13 b, be used for the nonlinear characteristic of the digital signal of M ADC1302 output is carried out digital compensation.Certainly, can also be in each branch road increase the module of other calibration function between ADC and DDC and the filtering extraction module, such as module etc. with channel-equalization function.

In the practical application, M gain branch road module 1301 comprises parallel high-gain branch road and low gain branch road, and each gain branch road module can adopt the series connection form.Be that example describes with three gain branch road modules that are respectively 60dB, 35dB and 10dB below.Referring to Figure 13 c, be that the electrical block diagram of 3 gain branch road modules is given an example, the gain of gain branch road 1 is 60dB, and the gain of gain branch road 2 is 35dB, and the gain of gain branch road 3 is 10dB.The non-while dynamic range of receiver can be expanded about 50dB like this.

The foregoing description is based on the hypothesis that offsets on multiple branch circuit correction and pointwise handover module 706 intermediate frequency before, and just simulating has one or more levels mixing in the receive path upstream 703, and through no longer including mixing after the interference cancellation module 704.Embodiment of the invention scheme also can be used following situation: offset on the radio frequency before the simulation receive path stage casing 705; In the simulation receive path upstream 703 multistage intermediate frequency is arranged, at this moment, do not offset and on that grade intermediate frequency, realize, and on certain grade of intermediate frequency of more close antenna 701, realize near multiple branch circuit correction and pointwise handover module 706.

And, the foregoing description is the explanation of the pending signal to input receiver when being analog if signal, described analog if signal is a real signal, if the pending signal of input receiver is the analog I signal, described analog I signal is a baseband complex signal, comprise I road and Q road signal, then each module of Fig. 7 will similarly be handled I road and Q road signal.Particularly, among Fig. 9, simulation compensation of delay module 901, simulation useful signal trap module 902 and the simulation width of cloth compensating module 903 mutually all are the respective handling that I road and Q road signal are carried out.Among Figure 10, intermediate frequency filtering module 1007 is replaced with low-pass filtering module, carry out low-pass filtering treatment; Because I road and Q road signal are baseband signal, the signal of certainly being exported by described low pass filtered mode does not need up-conversion, therefore removes up-conversion module 1008; Just intermediate frequency filtering module 1007 replaces with the low pass filtered mode certainly, and removes after the up-conversion module 1008, and each module is all carried out respective handling to I road and Q road signal among Figure 10.Among Figure 11, intermediate frequency filtering module 1107 is replaced with low-pass filtering module, carry out low-pass filtering treatment; Because I road and Q road signal are baseband signal, the signal of being exported by described low-pass filtering module does not need up-conversion, therefore removes up-conversion module 1108; Intermediate frequency filtering module 1107 is replaced with low-pass filtering module, and remove after the up-conversion module 1108, each module of Figure 11 is all carried out respective handling to I road and Q road signal.Among Figure 12, intermediate frequency filtering module 1207 replaces with low-pass filtering module at this moment, carries out low-pass filtering treatment; Because I road and Q road signal are baseband signal, the signal of being exported by described low-pass filtering module does not need up-conversion, therefore removes up-conversion module 1208; Intermediate frequency filtering module 1207 is replaced with low-pass filtering module, and remove after the up-conversion module 1208, each module of Figure 12 is all carried out respective handling to I road and Q road signal.Among Figure 13 a and the 13b, because the signal of M gain branch road module of input has been I road and Q road signal, no longer needing M DDC and filtering extraction module 1303 is I road and Q road signal with the conversion of signals of input, therefore after removing M DDC and filtering extraction module 1303, other module among Figure 13 a and the 13b is carried out respective handling to I road and Q road signal.

Here analog I signal that the embodiment of the invention is related to and digital IQ signal are referred to as the IQ signal, below the IQ signal are further specified.I in the IQ signal represents homophase (Inphase) signal, and Q represents quadrature (Quadrature) signal.The IQ signal is actually a complex signal, promptly always exists with the form of I+jQ, wherein

j = \sqrt{- 1}

, be empty unit, I signal or Q signal itself are real signals.The IQ signal exists with the analog I signal in the analog signal territory, exists with digital IQ signal form at domain digital signal.In theory, the IQ signal can be used for representing baseband signal, and promptly the signal of carrier frequency＜bandwidth/2 does not satisfy Xi Er Bo Te (Hilbert) transformation relation between I road signal and the Q road signal; The IQ signal also can be used for representing bandpass signal, i.e. the signal of carrier frequency 〉=bandwidth/2, and satisfy Hilbert transformation relation between I road signal and the Q road signal this moment.The previous case is more common.IQ signal described in the embodiment of the invention just belongs to the previous case, promptly no matter be analog I signal or digital IQ signal, all is the expression baseband signal, i.e. the signal of carrier frequency＜bandwidth/2, and carrier frequency equals 0 or approach 0.

Referring to Figure 14, be the structural representation of amplitude and phase correction among Fig. 7 and pointwise handover module 708, this structure comprises that M amplitude and phase correction feed-forward loop delay compensation module 1401, amplitude and phase correction module 1402, amplitude and phase correction coefficients calculation block 1403, M road select 1 tunnel control module 1404, switch feed-forward loop

delay compensation module

1405 and 1 tunnel module 1406 is selected on the M road.

M amplitude and phase correction feed-forward loop delay compensation module 1401 is used for the digital IQ signal by M DDC and 1303 inputs of decimation filter module is carried out delay compensation, exports to amplitude and phase correction module 1402.

Amplitude and phase correction module 1402, comprise that amplitude and phase correction multiplier 1 is to amplitude and phase correction multiplier M, digital IQ signal after reception is proofreaied and correct with the amplitude and phase correction coefficient acquisition in self by the digital IQ signal of M amplitude and phase correction feed-forward loop delay compensation module 1401 inputs, and export to the M road and select 1 tunnel module 1406.

Described amplitude and phase correction multiplier is a complex multiplier, be used to implement the amplitude and phase correction of each branch road, through after the amplitude and phase correction, the digital IQ signal of two branch roads that will switch is essentially identical in amplitude and phase place at synchronization, what differed from is the signal to noise ratio of signal, and the signal to noise ratio of the signal of the big branch road that gains is big.Described amplitude and phase correction coefficient can be configured in advance in amplitude and phase correction module 1402, also can be by amplitude and phase correction coefficients calculation block 1403 input.

Amplitude and phase correction coefficients calculation block 1403, be used for carrying out the calculating of amplitude and phase correction coefficient according to digital IQ signal by M DDC and 1303 inputs of decimation filter module, and the switching mark signal that selects 1404 inputs of 1 tunnel control module on the M road is exported to amplitude and phase correction module 1402 with the amplitude and phase correction coefficient that calculates when effective.

Switching mark is that the M road selects 1 tunnel control module 1404 to produce according to certain switchover policy.The switching mark signal is arranged, and the switching mark signal is effective in other words, and the switching that will carry out on the current sampling point between branch road is described.For prevent branch road selected during in take place that amplitude and phase correction upgrades and the discontinuity that causes output signal width of cloth phase, designed the switching mark signal, its effect is the opportunity of control amplitude and phase correction coefficient update: only carry out the renewal of amplitude and phase correction coefficient at the eve that switches, allow selected branch road obtain new amplitude and phase correction coefficient, subsequent digital IQ signal is carried out amplitude and phase correction at the selected eve.And after in a single day selected, just do not upgrade the amplitude and phase correction coefficient of selected branch road, in order to avoid cause the discontinuity of output signal width of cloth phase, destroy signal quality.

M amplitude and phase correction feed-forward loop delay compensation module 1401, amplitude and phase correction module 1402 and amplitude and phase correction coefficients calculation block 1403 have been formed the amplitude and phase correction part, be a feed-forward loop structure, the magnitude-phase characteristics that this structure can be followed the tracks of the signal of input receiver fast changes.

M selects on the road 1 tunnel control module 1404, be used for according to switchover policy, from the M way word signal of M DDC and decimation filter module 1303 inputs, determine a branch road, produce the switch-over control signal that carries this branch road number, again switch-over control signal is exported to the M road and selected 1 tunnel module 1406.M selects on the road 1 tunnel control module 1404 also will produce the switching mark signal, with the Renewal Time of control amplitude and phase correction coefficient.

Switch feed-forward loop delay compensation module 1405, be used for selecting the switch-over control signal of 1 tunnel control module, 1404 inputs to carry out delay compensation on the M road, and export to the M road and select 1 tunnel module 1406.

M selects on the road 1 tunnel module 1406, be used for according to switch-over control signal by 1405 inputs of switching feed-forward loop delay compensation module, from the M way word signal of amplitude and phase correction module 1402 inputs, select one the tunnel, give interference cancellation module 704 with the digital IQ signal feedback of selecting, and export to digital received passage back segment 709.The digital IQ signal of selecting is maximum and undersaturated one road signal of signal amplitude in all branch roads.

M selects on the road 1 tunnel control module 1404, switching feed-forward loop delay compensation module 1405 and M road to select 1 tunnel module 1406 to form switching part among Figure 14, be a feed-forward loop structure, the envelope amplitude that this structure makes switching part can follow the tracks of the signal of input receiver fast changes.

M amplitude and phase correction feed-forward loop delay compensation module 1401, amplitude and phase correction module 1402, amplitude and phase correction coefficients calculation block 1403, M road select 1 tunnel control module 1404, switching feed-forward loop delay compensation module 1405 and M road to select 1 tunnel module 1406, behind the receiver electrification reset each sampling point are handled accordingly.For example, when the conversion of signals that the ADC on each branch road sends corresponding gain branch road module is digital signal, sample rate is 134.4Msps, after DDC on the process respective branch and filtering extraction module are carried out Digital Down Convert and filtering extraction, become 11.2Msps, then each sampling point in the described 11.2Msps signal flow is all judged, but judged near behind the saturated unsaturated again way word IQ signal, with its output as amplitude and phase correction and pointwise handover module 708.

In the practical application, not necessarily M amplitude and phase correction feed-forward loop delay compensation module 1401, amplitude and phase correction module 1402, amplitude and phase correction coefficients calculation block 1403, M road select 1 tunnel control module 1404, switching feed-forward loop delay compensation module 1405 and M road to select 1 tunnel module 1406 that each sampling point is all handled, as long as the amplitude and phase correction coefficient that amplitude and phase correction coefficients calculation block 1403 is calculated can be caught up with the variation of the signal of input receiver.Amplitude and phase correction coefficients calculation block 1403 and not requiring is handled each sampling point, can adopt regular or irregular processing mode.

Use M amplitude and phase correction feed-forward loop delay compensation module 1401 to remedy the time delay that the amplitude and phase correction coefficient calculations is produced among Figure 14.In actual applications, under the situation of time delay that the amplitude and phase correction coefficient calculations is produced less than the time delay of amplitude and phase correction module, M amplitude and phase correction feed-forward loop delay compensation module 1401 can also be between amplitude and phase correction coefficients calculation block 1403 and amplitude and phase correction module 1402, be that M the amplitude and phase correction coefficient that M amplitude and phase correction feed-forward loop delay compensation module 1401 is used for being imported by amplitude and phase correction coefficients calculation block 1403 carries out exporting to amplitude and phase correction module 1402 again after the delay compensation.Certainly, under the situation that the time delay of time delay that the amplitude and phase correction coefficient calculations is produced and amplitude and phase correction module equates, can not need M amplitude and phase correction feed-forward loop delay compensation module 1401.

In actual applications, if the total time-delay of the processing of M amplitude and phase correction feed-forward loop delay compensation module 1401 and amplitude and phase correction module 1402 is selected the processing time-delay of 1 tunnel control module 1404 less than the M road, switch feed-forward loop delay compensation module 1405 and just must be positioned on each branch road of signalling channel.Because M amplitude and phase correction feed-forward loop delay compensation module 1401, amplitude and phase correction module 1402 and amplitude and phase correction coefficients calculation block 1403 these 3 modules have been formed a feed-forward loop, for the delay compensation of the amplitude and phase correction feed-forward loop of getting along well exerts an influence mutually, switch feed-forward loop delay compensation module 1405 modules annexation can for: M DDC and filtered M way word IQ signal is exported to switching feed-forward loop delay compensation module 1405 to filtering extraction module 1303 and 1 tunnel control module 1404 is selected on the M road; Switching feed-forward loop delay compensation module 1405 is carried out delay compensation with the M way word IQ signal of M DDC and 1303 inputs of filtering extraction module, exports to M amplitude and phase correction feed-forward loop delay compensation module 1401 again, and the annexation of other module remains unchanged.Annexation also can be exported to for: the M way word IQ signal after amplitude and phase correction module 1402 will be proofreaied and correct and switch feed-forward loop delay compensation module 1405; Carry out delay compensation by switching feed-forward loop delay compensation module 1405, export to the M road again and select 1 tunnel module 1406, other annexation remains unchanged.

In actual applications, amplitude and phase correction and pointwise handover module 708 can also carry out pointwise earlier and switch, but in the signal of each branch road of importing amplitude and phase correction and pointwise handover module 708, select, and then the signal after the pointwise switching is carried out the correction of amplitude and phase place near saturated unsaturated again digital signal.

Referring to Figure 15, for the embodiment of the invention receives the exemplary process diagram of the method for wireless signal, this method may further comprise the steps:

Step 1501 is utilized the digital IQ signal of selecting behind the amplitude and phase correction, and the interference signal in the useful signal bandwidth in the pending signal of input receiver is offseted processing, obtains offseting the signal after the processing.

Step 1502 is carried out multiple branch circuit and is proofreaied and correct pre-treatment offseting signal after the processing, obtains the digital IQ signal that amplitude and phase correction is not passed through on the M road.

Step 1503, the M way word IQ signal that does not pass through amplitude and phase correction is carried out amplitude and phasing, select digital IQ signal behind one road amplitude and phase correction according to switchover policy again, the digital signal of selection is the digital IQ signal of selecting behind the amplitude and phase correction described in the step 1501.

After this step, this method can also comprise: the digital IQ signal that will select carries out digital processing, obtains bit stream.

Method below by Figure 16,17,18 and 19 couples of Figure 15 is illustrated.

Referring to Figure 16, for the present invention executes the method flow legend one that example receives wireless signal, this method may further comprise the steps:

Step 1601 is divided into main channel signal and feedforward tributary signal with the pending signal of input receiver.

Step 1602 is carried out compensation of delay to described main channel signal and is handled, and obtains the signal after compensation of delay is handled.This step is optional.

Step 1603 is carried out trap to the carrier signal in the described feedforward tributary signal and is handled, and obtains the signal after trap is handled.

Step 1604 is utilized the digital IQ signal of selecting behind the amplitude and phase correction, and the signal after trap is handled carries out the width of cloth and compensates mutually, obtains the signal after the width of cloth compensates mutually.

This step can specifically comprise: under the running parameter configuration, situation of change according to useful signal and interference signal in the useful signal bandwidth in the digital IQ signal of selecting behind the amplitude and phase correction, and the width of cloth phase compensation way that adopts etc., adaptometer is calculated best simulation width of cloth phase penalty coefficient; Signal after according to the described best simulation width of cloth phase penalty coefficient trap being handled carries out the width of cloth and compensates mutually, obtains the signal after the width of cloth compensates mutually.Described running parameter comprises the working frequency points of each carrier wave, and the bandwidth of the working signal on each working frequency points, or the like.

Step 1603～1604 can be carried out simultaneously with step 1602, also can first execution in step 1603～1604, and execution in step 1602 again.

Step 1605, signal after the described compensation of delay that obtains in the step 1602 handled and signal cancellation after the described width of cloth compensates mutually, the signal after being disappeared mutually.

Step 1606 is carried out analog with the signal that offsets after the processing.

This step can specifically comprise: the signal that will offset after the processing carries out processing such as frequency conversion, filtering and/or amplification.This step is optional.

Step 1607 is carried out the step gain process with the signal after the analog, and the M road analog signal after obtaining to handle is handled described M road analog signal sampling, is converted to M way word signal.

Step 1608 is carried out the down-conversion sampling with M way word signal and filtering extraction is handled, and obtains not pass through the M way word IQ signal of amplitude and phase correction.

Step 1609 will not carried out amplitude and phase correction feed-forward loop delay compensation through the M way word signal of amplitude and phase correction, obtains the signal behind the M road amplitude and phase correction feedforward delay compensation.This step is optional.

Alternatively, between

step

1608 and 1609, also comprise: the M way word IQ signal that will not pass through amplitude and phase correction switches the feed-forward loop delay compensation.

Step 1610 obtains M amplitude and phase correction coefficient according to the calculated signals that offsets after the processing, according to M the amplitude and phase correction coefficient that obtains the signal that M road amplitude and phase correction feedovers behind the delay compensation is carried out amplitude and phasing.

Step 1611 according to selecting one the tunnel the M way word IQ signal of switch-over control signal behind amplitude and phase correction that produces, is handled selected digital IQ signal, obtains bit stream.

The digital IQ signal of described selection is the digital IQ signal of selecting behind the amplitude and phase correction described in the step 1604.

The method that described switch-over control signal produces is: according to switchover policy never through determine one the tunnel in the M way word signal of amplitude and phase correction as selected branch road, produce to carry selected branch road the switch-over control signal of corresponding branch road number.Alternatively, in the method that switch-over control signal produces, described generation carries after the switch-over control signal of the corresponding branch road of selected branch road institute number, also comprises: the switch-over control signal of generation is switched the feed-forward loop delay compensation.

Alternatively, the calculated signals that offsets after the processing of the described basis of this step obtains also comprising after M the amplitude and phase correction coefficient: M the amplitude and phase correction coefficient that obtains carried out amplitude and phase correction feed-forward loop delay compensation.

Alternatively, between the

step

1610 and 1611, also comprise: will switch the feed-forward loop delay compensation through the M way word IQ signal of amplitude and phase correction.

Referring to Figure 17, be the method flow legend two of embodiment of the invention reception wireless signal, this method comprises:

Step 1701 is divided into main channel signal and feedforward tributary signal with the pending signal of input receiver.

Step 1702 is carried out compensation of delay to described main channel signal and is handled, and obtains the signal after compensation of delay is handled.

Step 1703 is carried out attenuation processing to described feedforward tributary signal, obtains the signal after the attenuation processing.This step is optional.

Step 1704 is a digital signal with the conversion of signals after the described attenuation processing.

Step 1705 is carried out trap to the carrier signal in the digital signal after the described conversion and is handled, and obtains the signal after trap is handled.

Step 1706 is utilized the digital IQ signal of selecting behind the amplitude and phase correction, and the signal after trap is handled carries out the width of cloth and compensates mutually, obtains the signal after the width of cloth compensates mutually.

Step 1707, the conversion of signals after the described width of cloth compensated mutually is an analog signal.

Step 1708 is carried out Filtering Processing to described analog signal, obtains the signal after the Filtering Processing.

Step 1709 is carried out upconversion process to the signal after the described Filtering Processing, obtains the signal after the up-conversion.This step is optional.

Step 1703～1709 can be carried out simultaneously with step 1702, also can first execution in step 1703～1709, and execution in step 1702 again.

Step 1710, with the signal cancellation behind the compensation of delay that obtains in signal after the described up-conversion and the step 1702, the signal after being disappeared mutually.

Step 1711～1716 are identical with step 1606～1611.

Referring to 18, be the method flow legend three of embodiment of the invention reception wireless signal, this method may further comprise the steps:

Step 1801 is divided into main channel signal and feedforward tributary signal with the pending signal of input receiver.

Step 1802 is carried out compensation of delay to described main channel signal and is handled, and obtains the signal after compensation of delay is handled.

Step 1803 is carried out attenuation processing to described feedforward tributary signal, obtains the signal after the attenuation processing.This step is optional.

Step 1804 is converted to digital signal with described feedforward tributary signal.

Step 1805 is a baseband signal with the digital signal down variable frequency that is converted to.

Step 1806 is carried out filtering extraction to described baseband signal and is handled, and obtains the signal after filtering extraction is handled.

Step 1807 is carried out trap to the carrier signal in the signal after the described filtering extraction processing and is handled, and obtains the signal after trap is handled.

Step 1808 is utilized the digital IQ signal of selecting behind the amplitude and phase correction, and the signal after trap is handled carries out the width of cloth and compensates mutually, obtains the signal after the width of cloth compensates mutually.

Step 1809, the signal after the described width of cloth compensated are mutually carried out filtering interpolation and are handled, and obtain the signal after filtering interpolation is handled.

Step 1810, the signal after described filtering interpolation handled carries out upconversion process, obtains the signal after the up-conversion.

Step 1811 is an analog signal with the conversion of signals after the described up-conversion.

Step 1812 is carried out Filtering Processing to described analog signal, obtains the signal after the Filtering Processing.

Step 1813 is carried out upconversion process to the signal after the described Filtering Processing, obtains the signal after the up-conversion.This step is optional.

Step 1803～1813 can be carried out simultaneously with step 1802, also can first execution in step 1803～1813, and execution in step 1802 again.

Step 1814, with the signal cancellation behind the described compensation of delay that obtains in signal after the described Filtering Processing and the step 1802, the signal after being disappeared mutually.

Step 1815～1820 are identical with step 1606～1611.

Referring to Figure 19, be the method flow legend four of embodiment of the invention reception wireless signal, this method may further comprise the steps:

Step 1901 is utilized the situation of change between the useful signal and interference signal, calculating optimum width of cloth phase penalty coefficient adaptively in the digital IQ signal of selecting behind the amplitude and phase correction;

Step 1902 according to described best width of cloth phase penalty coefficient, produces the digital signal that comprises interference signal in the useful signal bandwidth that is used to offset and do not comprise useful signal.

Step 1903, the described digital signal that produces is carried out conversion by digital to analogy, signal after the conversion is carried out Filtering Processing, and the signal after the Filtering Processing that obtains is to comprise interference signal in the described useful signal bandwidth that is used to offset and the analog signal that do not comprise useful signal.

Step 1904, signal after many described Filtering Processing carries out upconversion process, obtain the signal after the upconversion process, the signal after the described upconversion process is to comprise interference signal in the described useful signal bandwidth that is used to offset and the analog signal that do not comprise useful signal.This step is optional.

Step 1905 is with the pending signal of input receiver and the signal cancellation after the described upconversion process.

Step 1906～1911 are identical with step 1606～1611.

Figure 16～19th is the explanation of analog if signal to the pending signal of input receiver, and this is an ordinary circumstance, if the pending signal of input receiver is the analog I signal, its method is similar, repeats no more here.

The interference cancellation scheme of the embodiment of the invention uses feedforward branch road (comprising feedforward branch road that adopts the simulation feed forward approach and the feedforward branch road that adopts the digital feed forward method) or feedback branch to obtain interference signal, with the interference signal obtained and the pending signal cancellation of input receiver, the interior interference signal of useful signal bandwidth of pending signal is suppressed fully, cut down the interference signal in the useful signal bandwidth greatly.Like this, when amplifying useful signal, because interference signal is cut down greatly by M gain branch road module, even amplified interference signal when amplifying useful signal, interference signal after also can not occurring amplifying makes the problem of M ADC overload, thereby, the performance of receiver is not affected.

More importantly, the signal that the interference cancellation scheme of the embodiment of the invention will offset after the processing carries out multiple branch circuit correction pre-treatment, signal after handling is carried out amplitude and phase correction and pointwise switching, select a way word IQ signal, adjust the width of cloth phase penalty coefficient offset needs when handling in real time, adaptively according to the described digital IQ signal of selecting, make the amplitude and phase correction coefficient under situation about rising and falling significantly, still can obtain suitable feedback digital IQ signal, thereby guaranteed to offset effect at the pending signal of input receiver.

And the dynamic range of receiver is subjected to bottlenecks such as the dynamic range restriction of ADC in the receiver in the prior art, and embodiment of the invention interference cancellation scheme can effectively reduce the dynamic range of the signal of input ADC, has increased substantially the dynamic property of receiver.Embodiment of the invention scheme can become a kind of general big dynamic receiver, can be applied to all wireless technical field, just, not only can be applied to moving communicating field, can also be applied in the systems such as fixed wireless access, wireless data transmission, radar.

Above-described specific embodiment; purpose of the present invention, scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. a receiver is characterized in that, this receiver comprises interference cancellation module and multiple branch circuit correction and pointwise handover module;

Described multiple branch circuit is proofreaied and correct and the pointwise handover module, be used for that the signal by described interference cancellation module input is carried out multiple branch circuit and proofread and correct pre-treatment, signal after handling is carried out amplitude and phase correction, select digital IQ signal behind one road amplitude and phase correction according to switchover policy again, feed back to described interference cancellation module, and the digital IQ signal output that will select.

2. receiver as claimed in claim 1 is characterized in that, described interference cancellation module comprises that main channel, feedforward branch road and simulation offset module;

Described main channel after being used for pending signal carried out simple process, is exported to described simulation and is offseted module;

Described feedforward branch road, after the useful signal that is used for treating processing signals carries out trap, utilize multiple branch circuit to proofread and correct the digital IQ signal that feeds back with the pointwise handover module, the signal after trap is handled carries out the width of cloth and compensates mutually, and the signal after the width of cloth is compensated mutually sends described simulation to and offsets module;

Described simulation offsets module, is used for signal that described main channel is transmitted and the signal that described feedforward branch road transmits and offsets, and exports to multiple branch circuit and proofreaies and correct and the pointwise handover module offseting signal after the processing.

3. receiver as claimed in claim 1 is characterized in that, described interference cancellation module comprises that simulation compensation of delay module, feedforward branch road and simulation offset module;

Described simulation compensation of delay module is used to treat processing signals and carries out the compensation of delay processing, sends the signal after handling to described simulation and offsets module;

Described simulation offsets module, is used for signal that described simulation compensation of delay module is transmitted and the signal that described feedforward branch road transmits and offsets, and exports to multiple branch circuit and proofreaies and correct and the pointwise handover module offseting signal after the processing.

4. receiver as claimed in claim 2 is characterized in that, described feedforward branch road comprises simulation useful signal trap module and simulates width of cloth compensating module mutually;

Described simulation useful signal trap module, the useful signal that is used for treating processing signals carries out trap to be handled, and sends the signal after handling to simulation width of cloth phase compensating module;

Described simulation width of cloth phase compensating module, be used to utilize multiple branch circuit to proofread and correct the digital IQ signal that feeds back with the pointwise handover module, signal by described simulation useful signal trap module input is carried out the width of cloth compensate mutually, the signal after the width of cloth is compensated mutually sends described simulation to and offsets module.

5. receiver as claimed in claim 4 is characterized in that, described simulation useful signal trap module comprises simulation useful signal trap submodule and simulation trap characteristic control submodule; Described simulation width of cloth phase compensating module comprises that the simulation width of cloth compensates submodule and best simulation width of cloth penalty coefficient calculating sub module mutually mutually;

Described simulation useful signal trap submodule is used for the useful signal in the described pending signal being carried out trap handling under the control of described simulation trap characteristic control submodule;

Described simulation trap characteristic control submodule is used to control described simulation useful signal trap submodule and carries out the trap processing;

The described simulation width of cloth compensates submodule mutually, be used for best width of cloth phase penalty coefficient according to described best simulation width of cloth phase penalty coefficient calculating sub module input, signal by described simulation useful signal trap submodule input is carried out the width of cloth compensate mutually, the signal after the width of cloth is compensated mutually sends described simulation to and offsets module;

Described best simulation width of cloth phase penalty coefficient calculating sub module is used for utilizing multiple branch circuit to proofread and correct and the digital IQ signal useful signal of pointwise handover module feedback and the situation of change between the interference signal, the width of cloth of calculating optimum simulation adaptively phase penalty coefficient.

6. receiver as claimed in claim 3 is characterized in that, described feedforward branch road comprises feedforward analog to digital converter ADC, digital intermediate frequency useful signal trap module, digital intermediate frequency width of cloth phase compensating module, digital to analog converter DAC and intermediate frequency filtering module;

Described feedforward ADC, being used for described pending conversion of signals is digital signal, sends described digital intermediate frequency useful signal trap module to;

Described digital intermediate frequency useful signal trap module is used for that the useful signal by the signal of described feedforward ADC input is carried out trap and handles, and sends the signal after handling to digital intermediate frequency width of cloth phase compensating module;

Described digital intermediate frequency width of cloth phase compensating module, be used to utilize multiple branch circuit to proofread and correct the digital IQ signal that feeds back with the pointwise handover module, signal by described digital intermediate frequency useful signal trap module input is carried out the width of cloth compensate mutually, the signal after the width of cloth is compensated mutually sends described D/A converter module DAC to;

Described DAC, being used for the conversion of signals by described digital intermediate frequency width of cloth phase compensating module input is analog if signal, and described analog if signal is sent to described intermediate frequency filtering module;

Described intermediate frequency filtering module is used for the analog if signal by described DAC input is carried out Filtering Processing, sends the analog if signal after handling to described simulation and offsets module.

7. receiver as claimed in claim 6 is characterized in that, described digital intermediate frequency useful signal trap module comprises digital intermediate frequency useful signal trap submodule and digital intermediate frequency trap characteristic control submodule; Described digital intermediate frequency width of cloth phase compensating module comprises that the digital intermediate frequency width of cloth compensates submodule and optimal digital intermediate frequency width of cloth penalty coefficient calculating sub module mutually mutually;

Described digital intermediate frequency useful signal trap submodule, be used under the control of described digital intermediate frequency trap characteristic control submodule, handle carrying out trap, send the signal after handling to the described digital intermediate frequency width of cloth and compensate submodule mutually by the useful signal in the signal of described feedforward ADC input;

Described digital intermediate frequency trap characteristic control submodule is used to control described digital intermediate frequency useful signal trap submodule and carries out the trap processing;

The described digital intermediate frequency width of cloth compensates submodule mutually, be used for best width of cloth phase penalty coefficient according to described optimal digital intermediate frequency width of cloth phase penalty coefficient calculating sub module input, signal by described digital intermediate frequency useful signal trap submodule input is carried out the width of cloth compensate mutually, the signal after the width of cloth is compensated mutually sends described DAC to;

Described optimal digital intermediate frequency width of cloth phase penalty coefficient calculating sub module is used for utilizing digital IQ signal useful signal and the situation of change between the interference signal, the calculating optimum width of cloth phase penalty coefficient adaptively that multiple branch circuit is proofreaied and correct and the pointwise handover module feeds back.

8. receiver as claimed in claim 3, it is characterized in that described feedforward branch road comprises feedforward ADC, Digital Down Converter Module, digital decimation filtration module, digital baseband useful signal trap module, digital baseband width of cloth phase compensating module, digital interpolative filtration module, Digital Up Convert module, DAC and intermediate frequency filtering module;

Described feedforward ADC, being used for described pending conversion of signals is digital signal, sends described Digital Down Converter Module to;

Described Digital Down Converter Module is used for the signal by described feedforward ADC input is down-converted to baseband signal, sends the signal after the down-conversion to described digital decimation filtration module;

Described digital decimation filtration module is used for that the signal by described Digital Down Converter Module input is carried out filtering extraction and handles, and sends the signal after handling to described digital baseband useful signal trap module;

Described digital baseband useful signal trap module is used for that the useful signal by the signal of described digital decimation filtration module input is carried out trap and handles, and sends the signal after handling to digital baseband width of cloth phase compensating module;

Described digital baseband width of cloth phase compensating module, be used to utilize multiple branch circuit to proofread and correct the digital IQ signal that feeds back with the pointwise handover module, signal by described digital baseband useful signal trap module input is carried out the width of cloth compensate mutually, the signal after the width of cloth is compensated mutually sends described digital interpolative filtration module to;

Described digital interpolative filtration module is used for that the signal by described digital baseband width of cloth phase compensating module input is carried out filtering interpolation and handles, and sends the signal after handling to described Digital Up Convert module;

Described Digital Up Convert module is used for the signal by described digital interpolative filtration module input is carried out upconversion process, and the signal after the up-conversion is sent to described DAC;

Described DAC, being used for the conversion of signals by described Digital Up Convert module input is analog if signal, sends described analog if signal to described intermediate frequency filtering module;

9. receiver as claimed in claim 8 is characterized in that, described digital baseband useful signal trap module comprises digital baseband useful signal trap submodule and digital baseband trap characteristic control submodule; Described digital baseband width of cloth phase compensating module comprises that the digital baseband width of cloth compensates submodule and optimal digital base band width of cloth penalty coefficient calculating sub module mutually mutually;

Described digital baseband useful signal trap submodule, be used under the control of described digital baseband trap characteristic control submodule, handle carrying out trap, send the signal after handling to the described digital baseband width of cloth and compensate submodule mutually by the useful signal in the signal of described digital decimation filtration module input;

Described digital baseband trap characteristic control submodule is used to control described digital baseband useful signal trap submodule and carries out the trap processing;

The described digital baseband width of cloth compensates submodule mutually, be used for best width of cloth phase penalty coefficient according to described optimal digital base band width of cloth phase penalty coefficient calculating sub module input, signal by described digital baseband useful signal trap submodule input is carried out the width of cloth compensate mutually, the signal after the width of cloth is compensated mutually sends described digital interpolative filtration module to;

Described optimal digital base band width of cloth phase penalty coefficient calculating sub module is used for utilizing digital IQ signal useful signal and the situation of change between the interference signal, the calculating optimum width of cloth phase penalty coefficient adaptively that multiple branch circuit is proofreaied and correct and the pointwise handover module feeds back.

10. as claim 6,7,8 or 9 described receivers, it is characterized in that this receiver also comprises the attenuation module that links to each other with described feedforward ADC, described intermediate frequency filtering module and described simulation offset and comprise the up-conversion module between the module;

Described attenuation module is used for described pending signal is carried out attenuation processing, and the signal after handling is inputed to described feedforward ADC;

Described up-conversion module is used for the signal by the input of intermediate frequency filtering module is carried out upconversion process, sends the signal after handling to described simulation and offsets module.

11. receiver as claimed in claim 1 is characterized in that, described interference cancellation module comprises that main channel, feedback branch and simulation offset module;

Described main channel is used for that pending signal is exported to described simulation and offsets module;

Described feedback branch is used to utilize multiple branch circuit to proofread and correct the digital IQ signal that feeds back with the pointwise handover module, produces the analog signal that comprises interference signal in the useful signal bandwidth that is used to offset and do not comprise useful signal, sends described simulation to and offsets module;

Described simulation offsets module, is used for signal that described main channel is transmitted and the signal that described feedback branch transmits and offsets, and exports to multiple branch circuit and proofreaies and correct and the pointwise handover module offseting signal after the processing.

12. receiver as claimed in claim 11 is characterized in that, described feedback branch comprises optimal digital intermediate frequency width of cloth phase penalty coefficient computing module, multiple spot signal generator module, DAC and intermediate frequency filtering module frequently;

Described optimal digital intermediate frequency width of cloth phase penalty coefficient computing module, be used for utilizing multiple branch circuit to proofread and correct and the digital IQ signal useful signal of pointwise handover module feedback and the situation of change between the interference signal, calculating optimum width of cloth phase penalty coefficient sends multiple spot signal generator module frequently to;

Described multiple spot is signal generator module frequently, the best width of cloth phase penalty coefficient that transmits according to described optimal digital intermediate frequency width of cloth phase penalty coefficient computing module produces the digital signal that comprises interference signal in the useful signal bandwidth that is used to offset and do not comprise useful signal, sends DAC to;

Described DAC is used for the digital signal of described multiple spot signal generator module transmission frequently is converted to analog if signal, sends described intermediate frequency filtering module to;

13. receiver as claimed in claim 12, it is characterized in that, described intermediate frequency filtering module and described simulation offset and also comprise the up-conversion module between the module, be used for the analog if signal by described intermediate frequency filtering module input is carried out upconversion process, send the signal after the upconversion process to described simulation and offset module.

14., it is characterized in that described pending signal is analog if signal or analog I signal as claim 1,2,3 or 11 described receivers.

15. receiver as claimed in claim 1 is characterized in that, described multiple branch circuit is proofreaied and correct with the pointwise handover module and is comprised multiple branch circuit correction pre-processing module and amplitude and phase correction and pointwise handover module;

Described multiple branch circuit is proofreaied and correct pre-processing module, is used for the signal process M road step gain process to described interference cancellation module input, carries out after the sampling processing, and output M way word signal is given described amplitude and phase correction and pointwise handover module, and M is a positive integer;

Described amplitude and phase correction and pointwise handover module, be used for and carry out amplitude and phasing by the M way word signal of described multiple branch circuit correction pre-processing module input, utilize switchover policy to select one the tunnel, obtain the described digital IQ signal of selecting, export to digital received passage back segment and described interference cancellation module more respectively.

16. receiver as claimed in claim 15 is characterized in that, described multiple branch circuit is proofreaied and correct pre-processing module and is comprised M gain branch road module, a M ADC and M DDC and filtering extraction module;

M gain branch road module is used for the signal of interference cancellation module input is carried out the step gain process, and the signal after handling is exported to M ADC;

M ADC is used for the signal of M gain branch road module input is carried out sampling processing, obtains M way word signal, exports to M DDC and filtering extraction module;

M DDC and filtering extraction module are used for that the digital signal of M ADC input is carried out the down-conversion sampling and filtering extraction is handled, and send the signal after handling to described amplitude and phase correction and pointwise handover module.

17. receiver as claimed in claim 15 is characterized in that, described amplitude and phase correction and pointwise handover module comprise that amplitude and phase correction module, M road select 1 tunnel control module and M road to select 1 tunnel module;

Described amplitude and phase correction module is utilized the M way word signal after the M way word signal of being imported by multiple branch circuit correction pre-processing module is proofreaied and correct with the amplitude and phase correction coefficient acquisition in self, and is exported to the M road and select 1 tunnel module;

Described M selects 1 tunnel control module in the road, utilizes M way word signal and switchover policy generation by the input of multiple branch circuit correction pre-processing module to carry the switch-over control signal of branch road information, and switch-over control signal is exported to the M road select 1 tunnel module;

Described M selects 1 tunnel module in the road, utilizes the switch-over control signal that is selected the input of 1 tunnel control module by the M road, selects one the tunnel from the M way word signal of amplitude and phase correction module input, exports to digital received passage back segment and described interference cancellation module more respectively.

18. receiver as claimed in claim 17, it is characterized in that, described amplitude and phase correction and pointwise handover module also comprise the amplitude and phase correction coefficients calculation block, be used for and carry out the calculating of amplitude and phase correction coefficient by the M way word signal that multiple branch circuit is proofreaied and correct pre-processing module input, utilize the M road to select the switching mark signal of 1 tunnel control module input that the amplitude and phase correction coefficient that calculates is exported to the amplitude and phase correction module.

19. receiver as claimed in claim 18, it is characterized in that, described amplitude and phase correction and pointwise handover module also comprise M amplitude and phase correction feed-forward loop delay compensation module, be used for and carry out delay compensation by the M way word signal that multiple branch circuit is proofreaied and correct pre-processing module input, export to described amplitude and phase correction module;

Perhaps, be used for the amplitude and phase correction coefficient by the input of amplitude and phase correction coefficients calculation block is carried out delay compensation, export to described amplitude and phase correction module.

20. receiver as claimed in claim 18, it is characterized in that, described amplitude and phase correction and pointwise handover module also comprise switching feed-forward loop delay compensation module, are used for being selected by the M road switch-over control signal of 1 tunnel control module input to carry out delay compensation, and export to the M road and select 1 tunnel module;

Perhaps, the M way word signal that is used for being proofreaied and correct the pre-processing module input by multiple branch circuit carries out delay compensation, exports to the amplitude and phase correction module;

Perhaps, be used for the M way word signal through amplitude and phase correction by the input of amplitude and phase correction module is carried out delay compensation, and export to the M road and select 1 tunnel module.

21. receiver as claimed in claim 1, it is characterized in that, comprise simulation receive path stage casing between described interference cancellation module and correction of described multiple branch circuit and the pointwise handover module, after being used for signal to interference cancellation module output and carrying out analog, send described multiple branch circuit to and proofread and correct and the pointwise handover module.

22. a method that receives wireless signal is characterized in that, this method comprises:

To not carrying out amplitude and phasing, select digital IQ signal behind one road amplitude and phase correction according to switchover policy again through the M way word IQ signal of amplitude and phase correction.

23. method as claimed in claim 22 is characterized in that, described offset to handle comprise:

Pending signal is divided into main channel signal and feedforward tributary signal;

Useful signal in the described feedforward tributary signal is carried out trap to be handled;

Utilize the digital IQ signal of selecting behind the described amplitude and phase correction, the signal after trap is handled carries out the width of cloth and compensates mutually, obtains the signal after the width of cloth compensates mutually;

With described main channel signal and signal cancellation after the described width of cloth compensates mutually, the signal after disappearing mutually is the described signal that offsets after the processing.

24. method as claimed in claim 23 is characterized in that, described with pending signal be divided into main channel signal and the feedforward tributary signal after, this method comprises:

Described main channel signal is carried out compensation of delay handle, obtain the signal after compensation of delay is handled;

Describedly with signal cancellation after the described width of cloth compensates mutually be: signal after described compensation of delay is handled and signal cancellation after the described width of cloth compensates mutually with described main channel signal.

25. method as claimed in claim 24 is characterized in that, described useful signal in the described feedforward tributary signal is carried out before trap handles, this method comprises:

Described feedforward tributary signal is converted to digital signal;

Describedly useful signal in the described feedforward tributary signal is carried out trap be treated to: the useful signal in the described digital signal after the conversion is carried out trap handle;

After the described signal that obtains after the width of cloth compensates mutually, this method comprises:

Conversion of signals after the described width of cloth compensated mutually is an analog signal;

Described analog signal is carried out Filtering Processing, obtain the signal after the Filtering Processing;

Signal after described compensation of delay handled with signal cancellation after the described width of cloth compensates mutually is: signal after described compensation of delay is handled and the signal cancellation after the described Filtering Processing.

26. method as claimed in claim 25 is characterized in that, described described feedforward tributary signal is converted to before the digital signal, this method comprises:

Described feedforward tributary signal is carried out attenuation processing, obtain the signal after the attenuation processing;

Describedly described feedforward tributary signal is converted to digital signal is: with the conversion of signals after the described attenuation processing is digital signal;

Described described analog signal is carried out after the Filtering Processing, this method comprises: the signal after the described Filtering Processing is carried out upconversion process, obtain the signal after the up-conversion;

Described signal and the signal cancellation after the Filtering Processing after described compensation of delay is handled is: signal after described compensation of delay is handled and the signal cancellation after the described up-conversion.

27. method as claimed in claim 24 is characterized in that, describedly useful signal in the described feedforward tributary signal is carried out trap comprises before handling: described feedforward tributary signal is converted to digital signal;

With the digital signal down variable frequency that is converted to is baseband signal;

Described baseband signal is carried out filtering extraction handle, obtain the signal after filtering extraction is handled;

Describedly useful signal in the described feedforward tributary signal is carried out trap be treated to: the useful signal in the signal after described filtering extraction is handled carries out trap to be handled;

Signal after the described width of cloth compensated mutually carries out filtering interpolation to be handled, and obtains the signal after filtering interpolation is handled;

Signal after described filtering interpolation handled carries out upconversion process, obtains the signal after the up-conversion;

With the conversion of signals after the described up-conversion is analog signal;

Described signal after described compensation of delay is handled with signal cancellation after the described width of cloth compensates mutually is: signal after described compensation of delay is handled and the signal cancellation after the described Filtering Processing.

28. method as claimed in claim 27 is characterized in that, described described feedforward tributary signal is converted to before the digital signal, this method comprises:

Described after described compensation of delay is handled signal and the signal cancellation after the described Filtering Processing be: signal after described compensation of delay is handled and the signal cancellation after the described up-conversion.

29. method as claimed in claim 22 is characterized in that, described offset to handle comprise:

Utilize the digital IQ signal of selecting behind the amplitude and phase correction, produce the analog signal that comprises interference signal in the useful signal bandwidth that is used to offset and do not comprise useful signal;

The analog signal that comprises interference signal in the described useful signal bandwidth that is used to offset with the pending signal of input receiver and generation and do not comprise useful signal disappears mutually, and the signal after disappearing mutually is the described signal that offsets after the processing.

30. method as claimed in claim 29 is characterized in that, the described digital IQ signal of selecting behind the amplitude and phase correction that utilizes produces the analog signal that comprises interference signal in the useful signal bandwidth be used to offset and do not comprise useful signal and comprises:

Utilize the situation of change between the useful signal and interference signal, calculating optimum width of cloth phase penalty coefficient adaptively in the digital IQ signal of selecting behind the described amplitude and phase correction;

According to described best width of cloth phase penalty coefficient, produce the digital signal that comprises interference signal in the useful signal bandwidth that is used to offset and do not comprise useful signal;

The described digital signal that produces is carried out conversion by digital to analogy, signal after the conversion is carried out Filtering Processing, and the signal after the Filtering Processing that obtains is to comprise interference signal in the described useful signal bandwidth that is used to offset and the analog signal that do not comprise useful signal;

Described with input receiver pending signal and the described useful signal bandwidth that is used to offset of generation in comprise interference signal and the analog signal that do not comprise useful signal disappear mutually for: with the pending signal of input receiver and the signal cancellation after the described Filtering Processing.

31. method as claimed in claim 30 is characterized in that, described signal after the conversion is carried out after the Filtering Processing, this method comprises:

Signal after the described Filtering Processing is carried out upconversion process, obtain the signal after the upconversion process, the signal after the described upconversion process is to comprise interference signal in the described useful signal bandwidth that is used to offset and the analog signal that do not comprise useful signal;

Describedly be: with the pending signal of input receiver and the signal cancellation after the described upconversion process with the pending signal of input receiver and the signal cancellation after the described Filtering Processing.

32. method as claimed in claim 22 is characterized in that, the described signal that will offset after the processing carries out multiple branch circuit through the overcorrect pre-treatment, obtains the M road and does not comprise through the digital IQ signal of amplitude and phase correction:

The signal that offsets after the processing is carried out the step gain process, the M road analog signal after obtaining to handle;

M road analog signal sampling is handled, obtained M way word signal;

M way word signal is carried out down-conversion sampling and filtering extraction processing, obtain the described M way word IQ signal that does not pass through amplitude and phase correction.

33. method as claimed in claim 22 is characterized in that, and is described to not carrying out amplitude and phasing through the M way word IQ signal of amplitude and phase correction, selects the digital IQ signal behind one road amplitude and phase correction to comprise according to switchover policy again:

The M way word IQ signal that will not pass through amplitude and phase correction according to M the amplitude and phase correction coefficient that obtains carries out amplitude and phasing, again according to selecting one the tunnel the M way word IQ signal of switch-over control signal behind amplitude and phase correction that produces;

The method that described switch-over control signal produces is: according to switchover policy never through determine one the tunnel in the M way word IQ signal of amplitude and phase correction as selected branch road, produce to carry selected branch road the switch-over control signal of corresponding branch road number.

34. method as claimed in claim 33, it is characterized in that, described to not carrying out before amplitude and the phasing through the M way word signal of amplitude and phase correction, this method comprises: will be not do not carry out amplitude and phase correction feed-forward loop delay compensation through the M way word signal of amplitude and phase correction; Perhaps,

After M amplitude and phase correction coefficient of described acquisition, this method comprises: M the amplitude and phase correction coefficient that obtains carried out amplitude and phase correction feed-forward loop delay compensation.

35. method as claimed in claim 33 is characterized in that, the method that described switch-over control signal produces further comprises: the switch-over control signal that produces is switched the feed-forward loop delay compensation; Perhaps,

The described M way word signal that will not pass through amplitude and phase correction carries out before amplitude and the phasing, and this method further comprises: the M way word signal that will not pass through amplitude and phase correction switches the feed-forward loop delay compensation; Perhaps,

Described carrying out further comprises between the selection one tunnel amplitude and phasing and the M way word signal behind amplitude and phase correction: will switch the feed-forward loop delay compensation through the M way word signal of amplitude and phase correction.