KR100363403B1 - Real Time Blind/Adaptive Interference Cancellation Aparatus and Method using Feedback and/or Feedforward - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a real-time magnetic and adaptive interference noise canceling device applying the feedback technique, and a method and a computer-readable recording medium recording a program for realizing the method.

2. The technical problem to be solved by the invention

The present invention records a real-time magnetic / adaptive interference noise canceling device using a feedback technique that can remove various interference noises introduced through a receiving antenna of a receiver in a wireless communication system, and a method and a program for realizing the method. To provide a computer-readable recording medium.

3. Summary of Solution to Invention

The present invention, in the real-time magnetic / adaptive interference noise cancellation method applying the feedback method applied to the wireless communication system, the unwanted interference noise signal from the received signal of the main path including the desired signal and unwanted interference noise Extracting a portion of the signal passing through the main path to remove the component; Comparing and analyzing the received signal received through the main path and the received signal of the main path and the auxiliary path using the reference signal received through the auxiliary path for detecting the interference noise, and generates a control signal for removing the interference noise Second step; A third step of forming and outputting control data for optimal interference noise cancellation using the control signal; Adjusting an amplitude coefficient and a phase coefficient for removing interference noise received through a main path from a reference signal received through the control data and an auxiliary path; And a fifth step of eliminating unwanted interference noise by combining a signal having an amplitude equal to the amplitude of the unwanted interference noise signal adjusted in the fourth step and having a phase difference of 180 degrees with the interference noise signal received through the receiving antenna. Including a step.

4. Important uses of the invention

The present invention is used in a wireless communication base station system and a base station relay system.

Description

Real Time Blind / Adaptive Interference Cancellation Aparatus and Method using Feedback and / or Feedforward}

The present invention relates to an interference noise removing technology for removing various interference noises introduced through a receiving antenna of a receiver in a wireless communication system, and in particular, a real-time magnetic / adaptive interference noise removing device and a method using a feedback method and A computer readable recording medium having recorded thereon a program for realizing the method.

More specifically, in a space where various wireless communication systems coexist, adjacent frequencies in an environment in which interference between radio frequencies becomes more severe due to a narrower distance between the wireless communication systems and a narrower frequency interval with other wireless communication systems. It is to remove various interference noises generated in the wireless space that can be adversely affected by the system introduced through the frequency interference noise (Frequency Interference) and the receiving antenna between the systems using the.

In particular, the present invention is applicable not only to the base station system but also to the mobile communication wireless repeater system, and prevents the oscillation caused by the radio signal transmitted from the transmitting antenna to the receiving antenna and is introduced from the outside. Eliminate other interference noises.

That is, the present invention is to prevent the phenomenon that the transmission power of the adjacent transmission antenna is introduced into any receiving antenna to interfere with the operation of the system or to disable the communication of the same or another wireless communication system or cause damage By inputting and synthesizing a part of the signal radiated through the arbitrary transmitting antennas from the transmitting antenna with the power synthesizer having the same amplitude and antiphase as the signal input to the arbitrary receiving antenna with the loss and delay of free space, Unnecessary system input can be prevented, and the cost can be reduced by sharing the space between transmit / receive antennas of the same system, sharing materials for antenna installation, and sharing the space with other communication systems, and also installing system space. Is easy to manage and maintain, and it is possible to Howling and Intermodulation Distortion (IMD) can be reduced, and communication quality can be improved by minimizing interference to the wireless communication system.

Looking at the problems of the prior art with respect to the present invention.

As the number of wireless communication operators and the types of wireless communication systems increase, not only the number of base stations increases, but also the distance between other wireless communication base stations and the frequency intervals become narrow, which causes serious interference between radio frequencies. There was this. This phenomenon not only causes serious problems such as howling and IMD, but also severely affects the base station as well as the wireless communication failure and the repeater, causing abnormalities or oscillations of several base stations. This may cause the base station to saturate and further disrupt the service of the base station, i.e., in a space where several wireless communication systems coexist, the distance between the wireless communication systems becomes narrow and the frequency interval with other communication systems. Due to this narrowing, the interference noise between the radio frequencies becomes more severe. Therefore, in the current technical field, there is a need for a method of removing the interference noise between systems using neighboring frequencies.

In wireless communication, the radio shadow area is very sensitive to the distance between the transmitting system and the receiving system, the surrounding features, and other environments. In this case, installation of another transmission system is required, but in many cases, installation of the transmission system is inefficient because of a small shadow area or a small number of reception targets. Therefore, when a small shadow area within a few Km occurs, the wireless repeater system is often used. In other words, in wireless communication, in order to solve the radio shadow area inevitably generated by terrain, features, free space loss, etc., there is a need for a wireless repeater system that amplifies signals received in the same space and radiates them back to the same space. Various repeaters have been developed and used. In general, the wireless repeater system for mobile communication is a device for strengthening the strength of the radio signal is installed where the signal output from the base station is weak, amplify the weak signal and output to the mobile station, thereby providing a higher quality mobile communication service. Therefore, in the current technical field, there is an urgent need for a method for preventing a signal inputted by a feedback signal, that is, a transmission output transmitted through a transmission antenna, which is commonly generated in a wireless repeater system.

In general, mobile communication systems such as PCS and code division multiple access (CDMA) include a base station transceiver (BTS) serving a mobile terminal (mobile station) moving within a certain area. It consists of a base station controller (BSC), a base station management system (BSM) that operates and manages multiple base station controllers (BSC), a switching center system (MSC: mobile switching center), and a location registration system. It is.

The area serviced by each base station (BTS) is called a cell and is generally divided into three sectors. This cell expands to the base station area, base station controller area, and switching center service area in order.

As described above, a wireless mobile communication system using one cell as a unit is called a cellular system. Due to the development and dissemination of such cellular systems, the wireless communication market is changing rapidly in the world, and the day is changing quantitatively and qualitatively compared to other industries or technical fields. In particular, in the field of wireless communication, many countries have spared nods and aggressive investments for the construction of the world's single communication network in the 21st century. CDMA technology, the introduction of CDMA technology, development of commercialized products, activation of services such as cellular and PCS using CDMA technology, wireless data communication, wireless subscription New markets for WLL have emerged, and new concepts of mobile communication have emerged that can overcome the regional and spatial limitations of IMT-2000, which is called the next generation of mobile communication.

Such a wireless communication system should be provided with a base station, a wireless repeater, a mobile station, and a mobile terminal in order to allow general subscribers to talk to the other party using a wireless communication method. In addition, in the configuration of a general wireless repeater, the base station transmits a signal having a predetermined frequency, the base station direction antenna provided in the wireless repeater receives a predetermined signal and outputs it to the duplex filter, and the duplex filter is set in advance among the received signals. Only the frequency is filtered and output to the low noise amplifier, and the low noise amplifier amplifies only the low noise region of the signal having the filtered frequency. Such a wireless repeater system is generally applied to solve the radio shadow area in a mobile communication system. That is, the repeater receives and amplifies the weak radio wave, and then performs a function of transmitting the amplified signal again. For this purpose, the repeater includes a separate receiving antenna and a separate transmitting antenna. When relaying at the same frequency through such a repeater, a strong transmission signal is fed back to the receiving antenna and received along with the receiving signal to be relayed through the receiving antenna. This feedback signal causes a weakening of the repeater function. Therefore, it is very important problem in the repeater to remove the interference signal caused by the strong transmission signal from the received signal.

In addition, frequency interference occurs between systems using frequencies adjacent to each other in a wireless communication system. When the transmission frequency of one system and the reception frequency of another system are very close to each other, the degree of interference Is very serious.

As described above, in the conventional repeater system, since the transmitting and receiving antennas coexist in the same space, a signal radiated from the transmitting antenna is introduced again through the receiving antenna, thereby causing a serious interference effect on the receiving system. That is, since the transmitting / receiving antennas are installed adjacent to each other, a part of the transmission signal transmitted from the transmission unit flows into the reception antenna and the reception unit adds a signal introduced to the original reception signal. Since it causes interference to the receiver, it degrades the performance of the receiver system. In particular, the receiver uses a low noise amplifier with an excellent noise figure (NF: Noise Figure) in order to suppress noise and interference as much as possible. At the same time, the amplification to the same level will degrade the performance of the receiving system.

In other words, the range in which an amplifier that amplifies an input signal with a constant amplification linearly amplifies the input signal and outputs it is called a 1dB compression point. If exceeded, the amplifier operates in the nonlinear region, causing distortion of the signal and degrading the performance of the system.

Therefore, in the prior art, in order to minimize the influence of the transmitting antenna on the receiving antenna, there was a method of separating the transmitting system and the receiving system separately and maintaining the distance so as to have a large isolation value when designing the system. It is difficult to install the system separately, and it is also difficult to install it at a fairly long distance with large isolation. In other words, the distance between the transmitting and receiving antennas should be widened from tens to hundreds of meters, so the distance between the transmitting and receiving antennas is increased. There is a problem of maintenance, and since the transmitting and receiving antennas have different spaces, passive design is inevitable for the surrounding environment and causes many problems such as limitation of installation space and system maintenance.

In other words, as a method for minimizing the influence of the transmitting antenna on the receiving antenna, there has been a method of installing the transmitter and the receiver so as to have sufficient separation (isolation) while separating the transmitter and the receiver from each other. Since it is difficult to implement because the separation is separated by the distance, and the length of the transmission line is longer by the distance to be separated, another problem that the signal level is lowered due to the loss of the transmission line. In addition, the output signal is fed back to the input, limiting the range of the area that the system can cover, and the feedback input signal may cause oscillation of the system and affect the operation of the relay network. In addition, it not only disables the subscriber's call, but also affects the base station as well as the wireless repeater, causing abnormalities and oscillations of several base stations, saturating the base station, and in case of severe interruption of service of the base station. It can be cause.

In general, in an adjacent transmission / reception system in which interference between radio frequencies occurs, the strength of a signal transmitted from a transmission system through a transmission antenna to a reception antenna of an adjacent reception system is a type of base station antenna, that is, directivity or no signal. It can vary depending on the directional antenna, installation conditions and the surrounding environment. At this time, the intensity of the signal flowing from the transmitting antenna to the receiving antenna is attenuated by about 50 to 80 dB depending on the space loss due to the distance between the transmitting and receiving antennas, the performance of the antenna, the installation conditions and the surrounding environment. This is a signal that is much stronger than the strength of the signal to be received at the receiving antenna. If the transmission system transmits power of 10 W (40 dBm) and the isolation value between the transmitting and receiving antennas is 80 dB, the power received through the receiving antenna of the adjacent receiving system becomes -40 dBm.

In order to minimize this effect, when designing / installing a system, there is a method of separating the transmitting system and the receiving system separately and maintaining a constant distance so as to have a large isolation value, but in reality, the transmitting system and the receiving system are separated. Installation is difficult, and it is also difficult to install a relatively long distance to have a large isolation value.

In detail, the conventional method includes a power distribution device for distributing a transmission signal input from a transmission system and outputting the signal to a transmission antenna and an interference elimination device (ICS) in order to increase the isolation value between the transmission antenna and the reception antenna; Receives a part of the transmission signal from the power distribution unit and delays the transmission signal by the time it takes for the radio wave to reach the receiving antenna, space loss due to the distance between the transmitting and receiving antennas, performance of the antenna, installation conditions and surrounding environment It attenuates the size of the delayed transmission signal inputted from the power distribution device so as to have the same signal size as the attenuated transmission signal, and the space loss due to the distance between the transmitting and receiving antennas, the performance of the antenna, the installation conditions and the surrounding environment, etc. Input from the power distribution unit to be 180 degrees out of phase with the attenuated transmission signal Amplitude / phase converter outputs by shifting the phase of delayed and attenuated transmission signal, and is attenuated by space loss due to distance between transmitting / receiving antenna, antenna performance, installation condition and surrounding environment. And a power synthesizing device for synthesizing the transmission signal inputted from the antenna and the transmission signal output from the amplitude / phase converter and removing the transmission signal output from the transmission antenna and input to the reception antenna.

This configuration can only remove the interference noise caused by the feedback of the transmission signal in its own system, but there are problems such as the time delay problem and the adjustment method of phase and amplitude, and various interference noises generated in the wireless space can be eliminated. none. For example, it is not possible to remove interference signals transmitted from base stations and repeaters located in adjacent areas.

Therefore, in a space in which several wireless communication systems coexist, especially in an environment in which interference between radio frequencies becomes more severe due to a narrower distance between wireless communication systems and a narrower frequency interval with other wireless communication systems. There is a need for a method of eliminating various interference noises generated in a wireless space that can be adversely affected by the system by using a frequency interference noise and a reception antenna. In addition, there is an urgent need for a method of eliminating various interference noises caused by feedback of a transmission signal in an internal system and various other wireless environments and introduced with an information signal to a reception antenna of a reception system.

The present invention has been proposed to meet the above-mentioned demands, and is a real-time magnetic / adaptive interference noise removing device applying a feedback technique that can remove various interference noises flowing through a receiving antenna of a receiver in a wireless communication system. And a computer-readable recording medium having recorded thereon a method and a program for realizing the method.

1 is a basic explanatory diagram of a phase inversion coupling method applied to the present invention.

Figure 2 is a configuration diagram of an embodiment of a real-time magnetic / adaptive interference noise cancellation apparatus of the negative feedback (negative feedbcak) method according to the present invention.

Figure 3 is a configuration diagram of an embodiment of the real-time magnetic / adaptive interference noise cancellation apparatus of the forward feedback (Feedforward) method according to the present invention.

Figure 4a is a detailed configuration diagram of one embodiment of a comparative analysis signal generator according to the present invention.

Figure 4b is a detailed block diagram of another embodiment of a comparative analysis signal generator according to the present invention.

5 is a detailed configuration diagram of an embodiment of a signal controller according to the present invention.

Figure 6 is a detailed illustration of one embodiment of the interference noise canceller according to the present invention.

7 is a block diagram of an embodiment of a real-time magnetic / adaptive interference noise cancellation apparatus of the negative feedback loop technique according to the present invention.

8 is a block diagram of an embodiment of a real-time magnetic / adaptive interference noise cancellation apparatus of the forward feedback loop scheme according to the present invention.

9 is a block diagram of an embodiment of a real-time magnetic / adaptive interference noise cancellation apparatus of the adaptive negative feedback loop scheme according to the present invention.

10 is a block diagram of an embodiment of a real-time magnetic / adaptive interference noise cancellation apparatus of the adaptive forward feedback loop scheme according to the present invention.

FIG. 11 is a block diagram of an embodiment of a real-time magnetic / adaptive interference noise canceller of a mixed feedback technique in which a negative feedback loop technique and a forward feedback loop technique are coupled in series; FIG.

12 is a diagram illustrating an embodiment of a real-time magnetic / adaptive interference noise canceller of a mixed feedback technique in which a forward feedback loop technique and a negative feedback loop technique are coupled in series.

FIG. 13 is a block diagram of an embodiment of a real-time magnetic / adaptive interference noise canceller of an adaptive mixed feedback method in which an adaptive negative feedback method and an adaptive forward feedback method are coupled in series; FIG.

FIG. 14 is a block diagram of an embodiment of a real-time magnetic / adaptive interference noise canceller of an adaptive mixed feedback technique in which an adaptive forward feedback technique and an adaptive subfeedback technique are coupled in series; FIG.

* Explanation of symbols for the main parts of the drawings

202, 302: RF signal extractor 204, 304: comparative analysis signal generator

206, 306: signal controller 208, 308: interference noise canceller

210, 310: phase inversion coupler

The present invention for achieving the above object, in the real-time magnetic / adaptive interference noise canceller applying the feedback method applied to a wireless communication system, RF signal for dividing the received radio frequency (RF) signal by a predetermined ratio Extraction means; Comparative analysis signal generating means for comparing and analyzing the RF signal extracted by the RF signal extracting means with a reference signal for removing the interference noise component from the received signal components, and generating a comparative analysis signal; A signal for determining an optimal variable conversion control value so as to convert an elimination signal (corresponding signal) for removing the received interference noise into an optimal value using the comparative analysis signal generated by the comparative analysis signal generating means. Control means; The reference signal is controlled according to the optimum output value of the signal control means to adjust the amplitude, phase and time delay of the received feedback signal and the interference noise to be removed, and to remove the interference noise generating a cancellation signal (corresponding signal) as a result of the adjustment. Way; And a phase inversion combining means for combining the received RF signal with the cancellation signal (corresponding signal), transmitting only a desired signal through the main path, and removing unwanted feedback and interference noise signals. .

In addition, the present invention is characterized in that it further comprises a time delay means for adjusting the time delay of the output signal (removal signal, corresponding signal) of the interference noise removing means.

In addition, the present invention is characterized in that it further comprises a phase conversion means for adjusting the amplitude and phase of the output signal (removal signal, corresponding signal) of the interference noise removing means.

In addition, the present invention is the main path signal distributed by the rational distribution of the main path signal (signal including the desired signal and unwanted interference noise) received through the receiving antenna, and the main path signal by the phase inversion coupling means The output signal of the interference noise canceling unit is combined to compare the distribution signal distributed proportionally with respect to the output signal (which contains a small amount of residual error signal) from which the unwanted interference noise signal is removed, and extracts and compares only the error signal. Characterized in that it further comprises an error signal detecting means for transmitting to the analysis control signal generating means (comparison analysis signal generating means + signal control means).

The present invention for achieving the above object, in the real-time magnetic / adaptive interference noise removing apparatus applying the feedback method applied to the wireless communication system, the received signal of the received main path including the desired signal and unwanted interference noise Signal extracting means for extracting a portion of the signal passing through the main path to remove unwanted interference noise signal components among the signals; Comparing and analyzing the received signal received through the main path and the received signal of the main path and the auxiliary path using the reference signal received through the auxiliary path for detecting the interference noise, and generates a control signal for removing the interference signal Comparative analysis signal generating means; Signal control means for forming and outputting control data for optimal interference noise cancellation using the output signal of the comparative analysis signal generating means; Interference noise removing means for adjusting an amplitude coefficient and a phase coefficient to an appropriate value for the removal of the interference noise received through the main path from the reference signal received through the control data output and the auxiliary path of the signal control means; And forming a feedback loop with the means to remove the interference noise which is an unwanted signal component received through the main path, and outputting the output signal of the feedback loop to remove the interference noise which is an unwanted signal component of the main path. Also characterized in that it comprises a phase inversion coupling means for coupling by phase inversion.

In addition, the present invention is characterized in that it further comprises a time delay means for adjusting the time delay of the output signal (removal signal, corresponding signal) of the interference noise removing means.

In addition, the present invention is characterized in that it further comprises a phase conversion means for adjusting the amplitude and phase of the output signal (removal signal, corresponding signal) of the interference noise removing means.

In addition, the present invention is the main path signal distributed by the rational distribution of the main path signal (signal including the desired signal and unwanted interference noise) received through the receiving antenna, and the main path signal by the phase inversion coupling means The output signal of the interference noise canceling unit is combined to compare the distribution signal distributed proportionally with respect to the output signal (which contains a small amount of residual error signal) from which the unwanted interference noise signal is removed, and extracts and compares only the error signal. Characterized in that it further comprises an error signal detecting means for transmitting to the analysis control signal generating means (comparison analysis signal generating means + signal control means).

The present invention for achieving the above object, in the real-time magnetic / adaptive interference noise cancellation method applying the feedback method applied to a wireless communication system, the received signal of the received main path including the desired signal and unwanted interference noise Extracting a portion of the signal passing through the main path to remove unwanted interference noise components from among the signals; Comparing and analyzing the received signal received through the main path and the received signal of the main path and the auxiliary path using the reference signal received through the auxiliary path for detecting the interference noise, and generates a control signal for removing the interference noise Second step; A third step of forming and outputting control data for optimal interference noise cancellation using the control signal; Adjusting an amplitude coefficient and a phase coefficient for removing interference noise received through a main path from a reference signal received through the control data and an auxiliary path; And a fifth step of eliminating unwanted interference noise by combining a signal having an amplitude equal to the amplitude of the unwanted interference noise signal adjusted in the fourth step and having a phase difference of 180 degrees with the interference noise signal received through the receiving antenna. Characterized in that it comprises a step.

The present invention for achieving the above object, the real-time magnetic / adaptive interference noise canceller having a processor, the unwanted interference noise signal component of the received signal of the received main path including the desired signal and unwanted interference noise To remove, a first function of extracting a portion of the signal passing through the main path; Comparing and analyzing the received signal received through the main path and the received signal of the main path and the auxiliary path using the reference signal received through the auxiliary path for detecting the interference noise, and generates a control signal for removing the interference noise Second function; A third function of forming and outputting control data for optimal interference noise cancellation using the control signal; A fourth function of adjusting an amplitude coefficient and a phase coefficient for canceling the interference noise received through the main path from the reference signal received through the control data and the auxiliary path; And a fifth step of eliminating unwanted interference noise by combining a signal having an amplitude equal to the amplitude of the unwanted interference noise signal adjusted in the fourth step and having a phase difference of 180 degrees with the interference noise signal received through the receiving antenna. A computer readable recording medium having recorded thereon a program for realizing the function is provided.

The present invention aims to remove interference between adjacent transmit antennas and receive antennas in a radio frequency communication system by synthesizing a signal whose amplitude and phase are changed.

In other words, by making the isolation value between the transmission and reception systems large by using the radio frequency interference cancellation technique, the interference noise generated between the transmission and reception systems is eliminated, and the effect of the transmission system on the adjacent receiving system is minimized. The necessity of the development of a radio frequency interference noise canceling system to enable a smooth wireless communication has emerged, for this purpose the present invention occurs in the interference noise and other various wireless environment by the feedback of the transmission signal in the system receiving antenna of the receiving system By removing various interference noises introduced with the information signal with real-time, magnetic / adaptability, various interference noises introduced into the receiver in various wireless communication systems.

In particular, the present invention is applicable not only to a base station system but also to a wireless repeater system for a mobile communication, and a feedback signal is used to prevent oscillation caused by the wireless signal output from the output antenna returned to the input antenna. In addition, various interference noises introduced from the outside are removed using a feedback technique.

To this end, the present invention, in order to remove the feedback interference noise fed back from its own system in various wireless environments, the interference noise generated by the other adjacent wireless communication system and the various interference noise generated in the wireless space, In order to despread the radiopath interference noise and feedback interference noise signal components, which are unwanted signals except for the desired signals among the received signals received through the wireless path, using the PN signal of each user, Eliminate unwanted unwanted interference noise components.

In summary, the present invention removes various interference noises introduced through a receiver antenna of a receiver in various wireless communication systems, and is applicable not only to a base station system but also to a mobile communication repeater system, and removes a feedback signal. Therefore, the oscillation phenomenon caused by the radio signal transmitted from the transmitting antenna is returned to the receiving antenna can be prevented, and other interference noise introduced from the outside can be eliminated.

In addition, the present invention is to prevent the phenomenon that the transmission power of the adjacent transmission antenna is introduced into any receiving antenna to interfere with the operation of the system or to disable the communication of the same or another wireless communication system or cause damage By inputting and synthesizing a part of the signal radiated through the arbitrary transmitting antennas from the transmitting antenna with the power synthesizer having the same amplitude and antiphase as the signal input to the arbitrary receiving antenna with the loss and delay of free space, Unnecessary system input can be prevented, and the cost can be reduced by sharing the space between transmit / receive antennas of the same system, sharing materials for antenna installation, and sharing the space with other wireless communication systems. Is easy to manage and maintain, and can be generated on the receiving system. It can reduce the howling, intermodulation distortion (IMD) or the like, it is possible to improve the communication quality by minimizing interference to the system.

As a solution to the problems caused by feedback signals generated between the transmit / receive antennas of the conventional system, there are the following methods. That is, in order to remove the interference noise component appearing in the received signal of the wireless repeater system, by using the dual polarization antenna having two kinds of polarizations orthogonal to each other, the components of the signals received with the mutually orthogonal relative polarization are detected Interference noise can be eliminated by creating a signal of magnitude and antiphase (180 degrees out of phase) and combining it with the original signal.In particular, in the case of a repeater using a dual polarization antenna that can improve the performance of the receiver, It is spaced by a certain distance in the vertical direction, and can remove the feedback interference of the signal output from the transmitting antenna from the frequency received by the receiving antenna to amplify the weak reception signal with a gain of 110dB or more to provide an effect that can be relayed, Repeater system easily located while transmitting / receiving antenna at same point It can be built.

According to the present invention, a feedback signal commonly generated in a wireless repeater system, that is, a transmission output transmitted through a transmission antenna can be fed back to a reception antenna to block an input signal. As a result, it is possible to increase the output of the wireless repeater system by improving the separation of input / output signals of the wireless repeater system. Therefore, it is possible to widen the service coverage that the wireless repeater system is in charge of, and to use it even when the system causing the interference and the system receiving the interference are located in the same building. For example, if there are antennas of two systems at a distance close to the roof of the same building.

As another example, the oscillation of the repeater can be prevented by providing a stable communication service by measuring an input level of a feedback signal between transmit / receive antennas and automatically adjusting gain.

The technique of eliminating the feedback interference noise signal can be applied to cellular, PCS, IMT-2000, TRS and various wireless communication systems. By applying these techniques, the failure rate of equipment can be reduced to ensure reliability. Maintenance and reinvestment costs can be significantly reduced.

As described above, the present invention is to remove various interference noises introduced together with the information signal through the receiving antenna of the receiver in various wireless communication systems. In particular, the present invention can be applied not only to a base station system but also to a wireless repeater system for mobile communication. In addition, in order to prevent oscillation caused by the return of the radio signal output from the output antenna to the input antenna, the feedback signal is removed, and various other interference noises generated in the external radio space mixed with the information signal and introduced. The interference noise is removed in real time, magnetically and adaptively.

Various methods are available for removing interference noise components from received signal components received through a reception antenna of a wireless communication system.

That is, by using a dual polarization antenna having two kinds of orthogonal polarizations as described above, the components of signals received with relative polarizations orthogonal to each other are detected to produce signals of the same amplitude and antiphase, and synthesize them with the original signals. There is a method of eliminating interference noise by constructing an internal circuit that can generate a reference signal, generating a pilot signal, compensating for delay time by detecting components of the received signal, and adjusting phase and amplitude. By making a signal of the same phase and the same amplitude as the received signal based on the reference signal and synthesizing it with the original signal to remove the interference noise, or to separate the transmitting antenna and the receiving antenna by a predetermined distance in the vertical direction, and received by the receiving antenna It extracts the signal output from the frequency to the transmitting antenna and uses it as a reference signal to remove the interference noise. In order to remove the interference noise introduced to the receiving antenna or to establish a database or look-up table that is the basis for the interference noise through simulation tests and laboratory experiments, it is applied to the actual site. It is possible to use the basic data of the interference noise to be used and to spread the pilot signal using a PN code which is not commonly used by the system and to use it as a reference signal.

In other words, in the present invention, when various interference noises generated by feedback of a transmission signal and a variety of interference noises generated in a wireless space are introduced together with an information signal through a reception antenna using a reference signal that can be obtained / extracted by such various methods, As a method to remove the feedback signal and the interference noise generated in the radio space, the feedback signal and the feedforward loop technique are utilized in real time and magnetically. The adaptive compensation method can remove various interference noises flowing into the receiving antenna.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the wireless communication system, wireless path interference noise and feedback interference noise signal components, which are unwanted signals except for the desired signals, are received from the wireless path through pure RF system before despreading using the PN signal of each user. The theory of eliminating unwanted interference noise signal components has been known, which will be described below with reference to FIG. 1.

As shown in Figure 1, the input signal Want signal And unwanted interference noise signals It is received through the receiving antenna of the receiver. The received signal received through the receive antenna may be classified into two signal components. That is, a desired signal (information signal) and unwanted interference noise signal components, which are mixed and received when received through the receiving antenna, the reception system if only the unwanted interference noise signal components except the desired information signal from the mixed reception signal is removed Can increase the efficiency.

Equation 1 below represents the received signal received through the receiving antenna classified into the desired signal components and unwanted signal components, and (Equation 2) below to remove the unwanted interference noise from the received signal Representing a reference signal (auxiliary signal) for the generation / acquisition and extraction method of the reference signal can be obtained by applying the above various methods.

In Equation 2, the auxiliary or reference signal Called as Is assumed to have a magnitude equal to the amplitude of the unwanted signal among the input signals and has a phase difference of 180 degrees. With auxiliary or reference signals In the case of combining with the equation, it is expressed as Equation 3 below.

That is, as can be seen in the above Equations 3 and 4, unwanted interference noise signals among the received signals Is the auxiliary or reference signal , In other words Completely removed by the output signal Undesired signal components are not removed and appear only in the desired signal (information signal). Only the output will be shown in Equation 5 below.

That is, the combiner 100 of Figure 1 is the input signal And reference signal (removal signal or corresponding signal) By combining with the function to remove the unwanted interference noise signal, that is, the feedback signal or various interference noise generated in the radio space.

2 and 3 illustrate the basic concept of the feedback method according to the present invention, and classification of the feedback method is generally classified into a feedback method and a feedforward method. However, in general, feedback is referred to as feedback, and feedback is classified into negative feedback and positive feedback. In addition, the feedback method refers to a negative feedback (negative feedback) method.

The feedback method and the feedback method have advantages and disadvantages, and are applied to various control systems, and were proposed by Harold Black in the 1920s. Obtained 1686792.

In the present invention, by applying a generalized negative feedback method and a forward feedback method, signals transmitted through an unnecessary interference (interference noise) signal and a transmitting antenna generated in a wireless space are fed back to a receiving antenna and introduced together with a receiving information signal. It aims to improve the quality of the received information signal and improve the efficiency of the system by removing the received interference noise with real-time, magnetic / adaptability of the feedback interference noise signal. Same as

FIG. 2 is a block diagram of an embodiment of a real-time magnetic / adaptive interference noise canceling apparatus of a negative feedback method according to the present invention, including an RF signal extractor 202, a comparative analysis signal generator 204, and a signal controller ( 206, the interference noise canceller 208, and the phase inverting combiner 210.

Referring to FIG. 2, a path connecting the RF input terminal, the phase inversion combiner 210, the RF signal extractor 202, and the RF output terminal represents a main path of the received signal received through the receiving antenna, and compares and analyzes the signal generator 204. In the absence of an additional loop of signal controller 206 and interference noise canceller 208, the received RF signal passes directly to the RF output via the RF input.

However, as shown in FIG. 2, the phase inversion combiner 210, the RF signal extractor 202, the comparison analysis signal generator 204, the signal controller 206 and the interference noise canceller 208 constitute one loop. The loop output signal (output signal of the interference noise canceller) is a negative feedback coupling with the RF input signal in the phase inverting combiner 210, and when the negative feedback coupling is made, unwanted feedback included in the RF input signal If the amplitude and phase of the signal component are the same as the amplitude and magnitude of the output signal of the negative feedback loop (output signal of the interference noise canceller) and the phase is 180 degrees out of phase, the unwanted signal components included in the RF input signal are completely Removed. However, although it is impossible to completely remove unwanted signals due to the elements used and physical phenomena such as amplitude, phase, and time delay, it is aimed at maximizing the removal of unwanted signal components by various changes and applications of the elements constituting the loop. do.

In the configuration of the negative feedback loop of FIG. 2, the starting point of the negative feedback loop is an RF signal extractor 202 which performs a function of extracting a main path signal component at a constant ratio, and a comparison analysis signal generator 204 and a signal controller 206. ), And constitutes one closed loop terminated with the interference noise canceller 208 and the phase inverting combiner 210, which is called a negative feedback closed loop.

The RF signal extractor 202 extracts a portion of the signal passing through the main path by using a passive element in the main path of the RF input signal. The extraction method may use a power divider and various other devices, and are extracted by proportionally distribution according to the function of the device.

Comparative analysis signal generator 204 has two input signals. One input signal is a signal obtained by proportionally distributing the main path signal by the RF signal extractor 202, and the other input signal is a reference signal for removing interference noise components from the received signal components received by the system. There are various methods for generating such a reference signal to remove the interference noise component. That is, using a dual polarized antenna having two kinds of orthogonal polarization, using a module generating a pilot signal, or extracting and outputting the output signal of the transmitting antenna from a transmitting / receiving antenna spaced at a certain distance Alternatively, the pilot signal can be spread by using a database (DB) or a look-up table created by simulation, or by using a PN code not used by the system.

That is, the comparative analysis signal generator 204 is a device for outputting a constant comparison result by comparing the two input signals to each other, the main comparison targets are frequency, amplitude coefficient, phase coefficient and time delay coefficient, etc., in phase (I) The comparison result is output as the signal component and the inverse (Q) signal component. The in-phase (I) signal component and the inverse (Q) signal component may have an analog value having a constant value fixed for a predetermined time or a digital value converted into a plurality of bits at a constant interval for a predetermined time.

The signal controller 206 transmits a driving signal for driving the interference noise canceller 208 to the interference noise canceller 208 using the two signals (I / Q signals) output from the comparative analysis signal generator 204. Perform the function of passing. In addition, the signal controller 206 may determine whether the output I / Q signal of the comparison analysis signal generator 204 is a digital signal or an analog signal, or depending on the purpose of the signal controller 206, or the interference noise canceller 208. ) Can be implemented in various ways according to the driving signal is driven, and can also act as a bypass (by-pass).

That is, when the in-phase (I) signal component and the inverse (Q) signal component are input to the signal controller 206 as a digital value or are input as an analog value, a DB or a Look- Functions and circuits can be implemented in various ways depending on whether the up table is constructed and applied, and the driving signal (analog signal or digital signal) of the interference noise canceller 208.

In summary, the phase inversion combiner 210 in the negative feedback loop combines the output signal of the interference noise canceller 208 and the main path signal, and removes unwanted signal components. However, if the unwanted signal is completely removed from the output of the phase inverting combiner 210, the output of the phase inverting combiner 210 only outputs the desired signal information. However, the unwanted signal remains to some extent due to the characteristics of the devices used, the environmental conditions, the secular variation of the system, and various other variables, and this residual signal is generally referred to as an error signal.

The comparative analysis signal generator 204 detects the amount of change in the interference signal or the various interference noises generated in the wireless space by using the weak error signal, so that the corresponding signal generated by the interference noise canceller 208 does not continuously want the amplitude of the signal. A control signal is generated to track over phase and time delay.

That is, the comparison analysis signal generator 204 detects the level of the error signal remaining without being removed by the output signal (removal signal or corresponding signal) of the interference noise canceller 208 to detect the change of the feedback signal and various interference noise signals. It is a device for continuous tracking and monitoring. In order to continuously track and monitor feedback signals and various interference noise signals, the following conditions must be satisfied.

First, output value proportional to the magnitude of the error signal

Second, the function of controlling the operation of the closed loop and maintaining the output of the comparison analysis signal generator 204 when the error signal indicates a value of "0".

Third, a function that can control the output having a logarithmic linear change to satisfy the operating characteristics of the interference noise canceller 208

In order to perform this function, the basic structure of the comparative analysis signal generator 204 is as shown in Figs. 4a and 4b, and the main elements for constructing Figs. 4a and 4b are a mixer, a DC amplifier and an integrator, a DC adder and an algebra amplifier Etc.

The interference noise canceller 208 can be generally implemented using a commercially available integrated circuit (IC) or a hybrid integrated circuit (IC) which can adjust amplitude, phase, and time delay, and can also be used in an analog manner. Digitally, the amplitude, phase and time delay can be adjusted.

The purpose of the interference noise canceller 208 is to generate a signal that is 180 degrees different in amplitude and phase from the unwanted signal components in order to remove unwanted signal components from the signals received through the receiving antenna. In other words, by using the in-phase (I) signal component and the inverse (Q) signal component elements transmitted from the signal controller 206, the amplitude, phase, and time delay variables of the reference signal (1) are adjusted and removed. Produces a signal with the same amplitude and a 180 degree phase difference.

The phase inverting combiner 210 combines a received signal (a signal including desired and undesired signals) received through a receiving antenna and a cancellation signal (corresponding signal) of the interference noise canceller 208 and received through the receiving antenna. This function removes interference noise, which is an unwanted signal. That is, the interference noise signal received through the receiving antenna and the signal generated by the interference noise canceller 208 (removal signal or corresponding signal; a signal having an amplitude equal to the amplitude of an unwanted interference noise signal and having a phase difference of 180 degrees). Combination removes unwanted noise, which is an unwanted signal, and transmits only the desired information signal through the main path. At this time, the function of the phase inverting combiner 210 is a little error signal (error signal; unwanted signal because the mathematical / theoretical results can not be obtained due to the difference in the characteristics, temperature change and input signal of the various elements constituting the circuit) Residual value). If the phase inverting combiner 210 operates as a mathematical / theoretical result, the output of the phase inverting combiner 210 outputs only the desired information signal, and the interference noise is completely eliminated. The error signal remaining due to the imperfection of the phase inverting combiner 210 is distributed in the RF signal extractor 202 of the main path, and thus the comparison analysis signal generator 204, the signal controller 206, and the interference noise canceller 208. Through this, variables such as amplitude, phase and time delay are adjusted to form a continuous feedback loop to be recombined in the phase inversion combiner 210. The most important factors in forming such a negative feedback loop to remove unwanted interference noise are the reference signal (1) / reference signal (2), amplitude magnitude, phase difference, time delay of signal transmission, and the like. If any one of these variables deviates from the reference value, no interference noise is eliminated. Therefore, in order to sufficiently remove unwanted interference noise, delay should be made by using delay line, etc. if necessary, and amplitude should be adjusted using amplifier and attenuator to equalize amplitude. The phase must be adjusted using a delay element or phase shifter to make a difference of 180 degrees.

However, the reference signal 1 and the reference signal 2 represent the same signal, and the method of generating and extracting the reference signal can be applied to various methods as described above.

FIG. 3 is a block diagram of an embodiment of a real-time magnetic / adaptive interference noise canceling apparatus of a forward feedback method according to the present invention, including an RF signal extractor 302, a comparative analysis signal generator 304, and a signal controller 306. ), An interference noise canceller 308, and a phase inversion combiner 310.

Referring to FIG. 3, a path connecting the RF input terminal, the RF signal extractor 302, the phase inversion combiner 310, and the RF output terminal represents a main path of the received signal received through the receiving antenna, and compares and analyzes the signal generator 304. In the absence of an additional loop of signal controller 306 and interference noise canceller 308, the received RF signal passes directly to the RF output via the RF input.

However, as shown in FIG. 3, the RF signal extractor 302, the comparison analysis signal generator 304, the signal controller 306, the interference noise canceller 308, and the phase inverting combiner 310 constitute one loop. The loop output signal (output signal of the interference noise canceller) is coupled to the output signal of the RF signal extractor 302 in the phase inversion combiner 310 and forward feedback coupled, when the forward feedback coupling is performed, the RF input signal. If the amplitude and phase of the unwanted signal component included in the signal are the same in amplitude and magnitude as the output signal of the forward feedback loop (output signal of the interference noise canceller) and the phase is 180 degrees out of the Unwanted signal components are completely removed. However, although it is impossible to completely remove unwanted signals due to the elements used and physical phenomena such as amplitude, phase, and time delay, it is aimed at maximizing the removal of unwanted signal components by various changes and applications of the elements constituting the loop. do.

In the configuration of the forward feedback loop of FIG. 3, the starting point of the forward feedback loop is an RF signal extractor 302 which performs a function of extracting a main path signal component at a constant ratio, and a comparison analysis signal generator 304 and a signal controller 306. ), And an interference noise canceller 308 and a phase inversion combiner 310 are configured as one closed loop (Closed Loop), which is called a forward feedback closed loop.

The RF signal extractor 302 extracts a part of the signal passing through the main path by using a passive element in the main path of the RF input signal. The extraction method may use a power divider and various other devices, and are extracted by proportionally distribution according to the function of the device.

Comparative analysis signal generator 304 has two input signals. One input signal is a signal obtained by proportionally distributing the main path signal by the RF signal extractor 302, and the other input signal is a reference signal for removing unwanted interference noise signals. The extraction method may use various methods as described above.

That is, the comparison analysis signal generator 304 is a device for outputting a constant comparison result by comparing two input signals with each other, the main comparison targets are frequency, amplitude coefficient, phase coefficient and time delay coefficient, etc. The comparison result is output as the signal component and the inverse (Q) signal component. The in-phase (I) signal component and the inverse (Q) signal component may have an analog value having a constant value fixed for a predetermined time or a digital value converted into a plurality of bits at a constant interval for a predetermined time.

The signal controller 306 transmits a driving signal for driving the interference noise canceller 308 to the interference noise canceller 308 using two signals (I / Q signals) output from the comparative analysis signal generator 304. Perform the function of passing. In addition, the signal controller 306 is also based on whether the output I / Q signal of the comparison analysis signal generator 304 is a digital signal or an analog signal, and also depending on the purpose of the signal controller 306, and also the interference noise canceller 308. ) Can be implemented in various ways according to the driving signal is driven, and can also act as a bypass (by-pass).

That is, when the in-phase (I) signal component and the inverse (Q) signal component are input to the signal controller 306 as a digital value or are input as an analog value, the DB or Look- is inside the signal controller 306. Functions and circuits can be implemented in various ways depending on whether the up table is constructed and applied, and the driving signal (analog signal or digital signal) of the interference noise canceller 308.

The interference noise canceller 308 may be implemented using a commercially available integrated circuit (IC) or a hybrid integrated circuit (IC) which may adjust amplitude, phase, and time delay, and also may use analog or Digitally, the amplitude, phase and time delay can be adjusted. The purpose of the interference noise canceller 308 is to generate a signal that is 180 degrees different in amplitude and phase from the unwanted signal components in order to remove unwanted signal components from the signals received through the receiving antenna. In other words, using the in-phase (I) signal component and the inverse (Q) signal component elements transmitted from the signal controller 306, unwanted unwanted adjustments to the amplitude, phase, and time delay variables of the reference signal (1) Create a signal that is the same magnitude in amplitude as the signal and 180 degrees out of phase.

The phase inverting combiner 310 combines the reception signal received through the reception antenna and the output signal of the interference noise canceller 308 to remove interference noise that is an unwanted signal from the signal received through the reception antenna. That is, the interference noise signal received through the receiving antenna and the signal generated by the interference noise canceller 308 (reduction signal or corresponding signal; a signal having an amplitude equal to the amplitude of an unwanted interference noise signal and having a phase difference of 180 degrees). Combination removes unwanted noise, which is an unwanted signal, and transmits only the desired information signal through the main path. At this time, the function of the phase inverting combiner 310 is a little error signal (error signal; unwanted signal because the mathematical / theoretical results can not be obtained due to the characteristics of the various elements constituting the circuit, the temperature change and the difference of the input signal) Residual value). If the phase inverting combiner 310 operates as a mathematical / theoretical result, the output of the phase inverting combiner 310 outputs only the desired information signal, and the interference noise is completely eliminated. As described above, due to the imperfection of the phase inversion combiner 310, the output signal of the phase inversion combiner 310 combines the desired information signal and the unwanted interference noise signal (output signal of the RF signal extractor and output signal of the interference noise canceller). RF signal is output with the residual signal component except the desired signal. That is, the signal is distributed from the RF signal extractor 302 of the main path, and the parameters such as amplitude, phase, and time delay are adjusted through the comparison analysis signal generator 304, the signal controller 306, and the interference noise canceller 308. A continuous feedback loop is formed to be recombined in the inverting combiner 310. The most important factors in forming such a forward feedback loop to remove unwanted interference noise are the reference signal (1) / reference signal (2), the magnitude of the amplitude, the difference in phase, the time delay of the signal transmission. If any of these variables deviate from the reference value, interference noise is not eliminated. Therefore, in order to sufficiently remove unwanted interference noise, delay should be made by using delay line, etc. if necessary, and amplitude should be adjusted using amplifier and attenuator to equalize amplitude. The phase must be adjusted using a delay element or phase shifter to make a difference of 180 degrees.

However, the reference signal 1 and the reference signal 2 represent the same signal, and the method of generating and extracting the reference signal can be applied to various methods as described above.

Figure 4a is a detailed configuration diagram of an embodiment of a comparison analysis signal generator according to the present invention, showing the comparison analysis signal generator 204/304 of Figure 2 or 3 in more detail, as described above It has an input signal. That is, one input signal is a signal obtained by proportionally distributing the main path signal by the RF signal extractor 202/302, and the other input signal is a reference for removing interference noise components from the received signal components received by the system. It is a signal. The comparative analysis signal generator 204/304 is a device that outputs a constant comparison result by comparing and analyzing input signals using these two input signals. The main comparison targets are frequency, amplitude coefficient, phase coefficient, and time delay coefficient. The comparison result is output as the in-phase (I) signal component and the inverse (Q) signal component. The in-phase (I) signal component and the inverse (Q) signal component may have an analog value having a constant value fixed for a predetermined time or a digital value converted into a plurality of bits at a constant interval for a predetermined time.

As shown in FIG. 4A, the comparative analysis signal generator 204/304 includes a signal divider 4102, a comparator 4410-I / 4104-Q, a signal generator 4410-I / 4106-Q, and signal transmission. It is composed of a unit 4108-I / 4108-Q and a reference signal generator 4110, and the main functions of each component are as follows.

The signal splitter 4102 divides the signal of the main path proportionally distributed by the RF signal extractor 202/302 into an in-phase (I) signal component and an in-phase (Q) signal component. I) The in-phase signal separated by the signal component outputs the output value of the in-phase signal through the comparator 4104-I, the signal generator 4106-I, and the signal transmitter 4108-I, and the signal divider 4102. The reversed phase signal separated by the reversed phase (Q) signal component is outputted through the comparator 4104-Q, the signal generator 4206-Q, and the signal transmission unit 4108-Q. At this time, the comparator 414-I of the in-phase signal path compares and analyzes various variables of the in-phase signal by using the signal generated by the reference signal generator 4110 as another input signal, and compares the inverse-phase signal path comparator ( 4104-Q compares and analyzes various variables of the reversed phase signal using the signal generated by the reference signal generator 4110 as another input signal, and outputs the in-phase signal comparison analysis result and the reversed phase signal comparison analysis result, respectively.

The signal generator 4106-I of the in-phase signal path may be formed by a circuit configured using a DC amplifier, an integrator, an operational amplifier and a DC adder, an algebraic amplifier, etc. using the output of the comparator 414-I of the in-phase signal path. And outputs a value satisfying the condition of, and the signal generator (4106-Q) of the reverse phase signal path uses the output of the comparator (4104-Q) of the reverse phase signal path to the DC amplifier, the integrator, the operational amplifier and the DC adder, A circuit configured using a log amplifier or the like outputs a value satisfying the above condition.

The signal transmitting unit 4108-I / 4108-Q is a connection circuit for transmitting the output signal of the signal generator 4206-I / 4106-Q having the above conditions to the signal controller 206/306. Signal transfer units 4108-I / 4108-Q exist in each path unit in order to smoothly transmit / process signals and anti-phase signals.

The reference signal generator 4110 generates / acquires and extracts a reference signal for removing a feedback signal or various interference noise components generated in a wireless space among the received signal components received through the reception antenna. Extraction methods vary. That is, a dual polarized antenna having two kinds of orthogonal polarizations or an internal circuit capable of generating a reference signal generates a reference signal or transmits / receives separated by a certain distance. Extract the signal output from the transmitting antenna from the antenna, or build a DB or look-up table that is the basis for interference noise through simulation tests, or use a PN code that is not used by the system. Can be used to diffuse.

FIG. 4B is a detailed configuration diagram of another embodiment of the comparative analysis signal generator according to the present invention. In FIG. 4A, the signal splitter 4102, the comparator 414-I for processing the in-phase (I) signal component, and reference Integrating the functions of the signal generator 4110 and the comparator 4104-Q for processing the inverse (Q) signal component, the signal generator 4110 and the signal generator for in-phase (I) signal processing are illustrated as a single functional block. I) and the signal transmission unit 4208-I perform the same functions as the functions of the signal generator 4206 -I and the signal transmission unit 4108 -I for in-phase (I) signal processing in FIG. 4A, The signal generator 4206 -Q and the signal transmitter 4208-Q for the inverse (Q) signal processing may be configured as the signal generator (4106-Q) and the signal transmitter (Q) for the inverse (Q) signal processing in FIG. 4A. 4108-Q).

FIG. 5 is a detailed block diagram of a signal controller according to an exemplary embodiment of the present invention. The signal controller 206/306 of FIG. 2 or FIG. 3 is shown in more detail, and the comparison analysis signal generator 204/304 of FIG. Generates and transmits the direct drive data and the drive value that can drive the interference noise canceller 208/308 using the output values of the in-phase (I) signal component and the inverted (Q) signal component, and also performs comparative analysis. Depending on whether the output signal (phase signal component and reverse phase signal component) of the signal generator 204/308 is a digital signal or an analog signal, and also according to the purpose of the signal controllers 206 and 306, the interference noise canceller 208 and 308 Functions can be implemented in various ways according to the driving signals and characteristic equations that are driven, and can also serve as a bypass.

That is, when the in-phase (I) signal component and the inverse (Q) signal component are input to the signal controllers 206 and 306 as digital values or are input as analog values, the DB or Look- Functions and circuits can be implemented in various ways according to the construction and application of up tables, driving signals (analog signals or digital signals) of the interference noise cancellers 208 and 308, and the components include A / D converters ( 502, a data processor 504, a data comparison and analysis unit 506, a data selector 508, a data transfer unit 510, and a D / A converter 512.

The in phase (I) and inverse (Q) output values of the comparison analysis signal generators 204/304 may be defined as various values according to the circuit components of the comparison analysis signal generators 204/304 and the implementation method of the circuits. That is, it can be output as an analog or digital, baseband data signal or RF signal and IF signal, but generally satisfies the above conditions by the basic purpose of use and basic function of the comparison analysis signal generator (204/304). have.

As shown in FIG. 5, the signal controllers 206/306 use a DB or Look-up Table method to drive the interference noise cancellers 208/308, or digital signal processing techniques (DSP) and various algorithms. Compensation for the characteristics of feedback signals and various interference noises caused by external environmental change, temperature, input size, phase, time delay and secular variation, and eliminating feedback signals and interference noise. Or when the output signal (I / Q signal) of the comparison analysis signal generator 204/304 is given an analog value, or the output signal of the comparison analysis signal generator 204/304 is an RF signal It is used when given the value of the IF signal, and can be changed according to the requirements and characteristics of the interference noise canceller 208/308. Further, according to the output value of the comparison analysis signal generator 204/304 and the requirements and operation characteristics of the interference noise canceller 208/308, the comparison analysis signal generator 204/304 is not used without using the signal controller 206/306. By-pass is possible when the in phase (I) and inverse (Q) signal outputs of can be directly input to the interference noise canceller 208/308.

That is, the received phase (I) signal component and the inverse phase (Q) signal component can be simply expressed as a mathematical phase diagram, and the magnitude and phase angle of the amplitude can be easily calculated by the phase diagram.

In this case, the A / D converter 502 converts the analog signal into a digital signal when the I / Q signal component of the comparison analysis signal generator 204/304 is input as an analog signal. The data processor 504 processes the data according to A / D-converted data according to quantization and other algorithms, and the data comparison and analysis unit 506 is a result of the data processor 504 and the DSP / CPU or ROM / RAM. Compare and analyze the data values of the stored DB or look-up table, and the data selection enhancer 508 selects / optimizes the optimal data from the data compared by the data comparison and analysis unit 506 by an algorithm or a program and a DSP / CPU. The data transfer unit 510 performs the function of delivering the data selected / determined by the data selector 508, and the D / A converter 512 performs the interference noise canceller 208/308. Analog depending on the operating characteristics of D / A conversion in the case of requiring to perform a function of converting the analog value.

FIG. 6 is a detailed diagram illustrating an embodiment of the interference noise canceller according to the present invention, and illustrates input / output of the interference noise canceller 208/308; 600 of FIG. 2 or FIG. 3, and is generally commercialized. Integrated circuits (IC: Vector Attenuator / Vector Modulator / Vector Attenuator Phase Shifter) or hybrid integrated circuits can be used by using diodes, etc. Phase shifters and time delay adjusters can be used. However, the easiest method is to generally use a commercially available integrated circuit to adjust variables such as amplitude, phase, and time delay to produce a corresponding signal to remove the feedback signal or unwanted interference noise signal components.

The interference noise canceller 600 generally has three or more input signals, and is in phase with the in-phase (I) signal component which is an output signal of the comparison analysis signal generator 204/304 or the signal controller 206/306. ) Control the reference signal using the signal component, adjust the amplitude, phase and time delay to reach the phase inverting combiner 210/310 through the main path and the output signal of the interference noise canceller 208/308. Combined to remove the feedback signal and various interference noise signal components. To this end, the interference noise canceller 600 produces a signal having a 180 degree difference in amplitude and phase with the same magnitude as the feedback signal and the interference noise signal.

However, the basic requirement for the complete cancellation of the feedback signal and unwanted interference noise received via the receiving antenna is the combination of two signals with the same amplitude, 180 degree phase difference and the same time delay. Therefore, if any one of these requirements is not matched, sufficient cancellation of interference noise is not achieved. Therefore, if necessary, the matching signal (removal signal), which is the output signal of the interference noise canceller 208/308, must be matched using a phase shifter or a time delay element.

FIG. 7 is a diagram illustrating an embodiment of a real-time magnetic / adaptive interference noise canceling device of a negative feedback loop technique according to the present invention, and shows the negative feedback loop technique illustrated as the embodiment of FIG. The RF signal extractor 702 performs the function of the RF signal extractor 202 of FIG. 2, and the comparison analysis control signal generator 704 uses the comparison analysis signal generator 204 and the signal controller 206 of FIG. 2. Combined, they are represented as one block. In addition, the output signal (removal signal or corresponding signal) of the interference noise canceller 706 is combined with the main path signal in the phase inversion combiner 712 via the time delay unit 708 and the phase shifter 710 so that the feedback signal is reduced. B Various interference noise signal components are eliminated.

The time delay unit 708 and the phase shifter 710 perform a function for time delay and phase shift of an output signal (removal signal or corresponding signal) of the interference noise canceller 706, and the interference noise canceller 706. If the output signal of) has the same amplitude, 180 degree phase difference and matched time delay as the feedback signal or the interference noise signal, it is not necessary to add it. However, due to the characteristics of the device and other conditions, the time delay unit 708 and the phase shifter 710 cannot accurately match the amplitude, phase, and time delay with the feedback signal or the interference noise signal of the main path. Adjust the amplitude, phase and time delay parameters to maximize the rejection rate of the feedback signal or interference noise signal.

FIG. 8 is a block diagram of an embodiment of a real-time magnetic / adaptive interference noise canceller of the forward feedback loop scheme according to the present invention, and shows a forward feedback loop scheme shown as the embodiment of FIG. 802 performs the function of the RF signal extractor 302 of FIG. 3, and the comparison analysis control signal generator 804 combines the comparison analysis signal generator 304 and the signal controller 306 of FIG. It is represented by a block. In addition, the output signal (removal signal or corresponding signal) of the interference noise canceller 806 is combined with the main path signal in the phase inverting combiner 812 via the time delay unit 808 and the phase shifting unit 810 so as to return the feedback signal. B Various interference noise signal components are eliminated.

The time delay unit 808 and the phase shifter 810 perform a function for time delay and phase shift of the output signal (removal signal or corresponding signal) of the interference noise canceller 806, and the interference noise canceller 806. If the output signal of) has the same amplitude, 180 degree phase difference and matched time delay as the feedback signal or the interference noise signal, it is not necessary to add it. However, because the amplitude, phase, and time delay of the device cannot be accurately matched with the feedback signal or the interference noise signal of the main path due to the electrical characteristics, the secular variation, and other conditions of the device, the time delay unit 808 and the phase The conversion unit 810 is added to adjust amplitude, phase, and time delay variables to maximize the removal rate of the feedback signal or the interference noise signal.

FIG. 9 is a block diagram illustrating an embodiment of a real-time magnetic / adaptive interference noise canceller of the adaptive negative feedback loop scheme according to the present invention. FIG. It shows the negative feedback loop technique.

In FIG. 9, the RF signal extractor 902 has the same functions and characteristics as the RF signal extractor 202 in FIG. 2, and the error signal detector 904 is transmitted through the receiving antenna by the main path signal splitter 900. Output of the main path signal and the interference noise canceller 908 by the main path signal and the phase inversion combiner 914 distributed by the proportional distribution of the received main path signals (signals containing the desired information signal and the unwanted interference noise). RF signals extractor 902 compares the distributed signal proportionally distributed to the output signal (which contains a small amount of residual error signal) from which the unwanted interference noise signal is combined to extract the error signal. It sends a function to the analysis control signal generator 906.

In addition, the comparison analysis control signal generator 906 combines the comparison analysis signal generator 204 and the signal controller 206 of FIG. 2 into one block. In addition, the output signal (removal signal or corresponding signal) of the interference noise canceller 908 is combined with the main path signal in the phase inverting combiner 914 via the time delay unit 910 and the phase shifting unit 912, and thus the feedback signal. B Various interference noise signal components are eliminated.

The time delay unit 910 and the phase shifter 912 perform functions for time delay and phase shift of the output signal (removal signal or corresponding signal) of the interference noise canceller 908, and the interference noise canceller 908. If the output signal of) has the same amplitude, 180 degree phase difference and matched time delay as the feedback signal or the interference noise signal, it is not necessary to add it. However, due to the characteristics of the device and other conditions, the time delay unit 910 and the phase shifter 912 cannot be accurately matched with the feedback signal or the interference noise signal of the main path. Adjust the amplitude, phase and time delay parameters to maximize the rejection rate of the feedback signal or interference noise signal.

FIG. 10 is a diagram illustrating an embodiment of a real-time magnetic / adaptive interference noise canceller of an adaptive forward feedback loop scheme according to an embodiment of the present invention, and illustrates a modified embodiment based on FIGS. 3 and 8. The feedback loop technique is shown.

In FIG. 10, the RF signal extractor 1002 performs the same function as the RF signal extractor 302 of FIG. 3, and the error signal detector 1004 receives the main path received through the receiving antenna from the RF signal extractor 1002. The main path signal and the output signal of the interference noise canceller 1008 are combined by the main path signal distributed by the proportional distribution of the signal (the signal including the desired information signal and the unwanted interference noise) and the phase inversion combiner 1014. Compared to the output signal (which contains a small amount of residual error signal) from which the unwanted interference noise signal has been removed, the distribution signal distributed proportionally in the output signal distributor 1000 is extracted, and only the error signal is extracted. Send a function to (1006).

In addition, the comparative analysis control signal generator 1006 combines the comparative analysis signal generator 304 and the signal controller 306 of FIG. 3 into one block. In addition, the output signal (removal signal or corresponding signal) of the interference noise canceller 1008 is combined with the main path signal in the phase inversion combiner 1014 via the time delay unit 1010 and the phase shifter 1012, and thus the feedback signal. B Various interference noise signal components are eliminated.

The time delay unit 1012 and the phase shifter 1014 perform a function for time delay and phase shift of an output signal (removal signal or corresponding signal) of the interference noise canceller 1008, and the interference noise canceller 1008. If the output signal of) has the same amplitude, 180 degree phase difference and matched time delay as the feedback signal or the interference noise signal, it is not necessary to add it. However, due to the characteristics of the device and other conditions, the time delay unit 1012 and the phase shift unit 1014 cannot be accurately matched with the feedback signal or the interference noise signal of the main path. Adjust the amplitude, phase and time delay parameters to maximize the rejection rate of the feedback signal or interference noise signal.

The functional blocks of FIGS. 9 and 10 are identically configured, but the main feedback loops are classified according to whether the adaptive negative feedback loop or the adaptive forward feedback loop is applied, and FIG. 9 is configured based on the adaptive negative feedback loop. 10 is configured based on an adaptive forward feedback loop.

FIG. 11 and FIG. 12 are methods for better eliminating feedback signals and various unwanted interference noise signals by applying FIGS. 2, 3, 7 and 8, and include a negative feedback loop technique and a forward feedback loop technique. Is a mixed feedback loop technique that combines in series. The mixed feedback loop technique is a method that combines the advantages and disadvantages of the negative feedback loop technique with the advantages and disadvantages of the forward feedback loop technique, which improves the rejection of interference noise and enables wideband signal processing. It also improves system stability and real-time adaptability.

FIG. 11 is a diagram illustrating an embodiment of a real-time magnetic / adaptive interference noise canceller of a mixed feedback technique in which a negative feedback loop technique and a forward feedback loop technique are coupled in series, and a negative feedback unit 1100 and a forward direction are illustrated in FIG. The feedback unit 1102 is connected in series, and the negative feedback unit 1100 includes an RF signal extractor 1104, a negative feedback loop control unit 1106, and a phase inversion combiner 1108, and a negative feedback loop control unit 1106. ) Is a single functional block including the comparison analysis signal generator 204, the signal controller 206, and the interference noise canceller 208 of FIG. 2, and performs the same function of the detailed functional block in FIG. The function of the detailed functional block in FIG. 7 as a single functional block including the comparative analysis control signal generator 704, the interference noise canceller 706, the time delay unit 708, and the phase shifter 710 of FIG. Do the same.

The forward feedback unit 1102 coupled in series with the output of the negative feedback unit 1100 includes an RF signal extractor 1110, a forward feedback loop control unit 1112, and a phase inversion combiner 1114, and a forward feedback loop control unit ( 1112 is a single functional block including the comparison analysis signal generator 304, the signal controller 306, and the interference noise canceller 308 of FIG. 3, and performs the same functions as the detailed functional blocks of FIG. 8 is a single functional block including the comparison analysis control signal generator 804, the interference noise canceller 806, the time delay unit 808, and the phase shifter 810 of FIG. 8. Perform the same function of.

FIG. 12 is a diagram illustrating an embodiment of a real-time magnetic / adaptive interference noise canceller of a mixed feedback technique in which a forward feedback loop technique and a negative feedback loop technique are coupled in series. The feedback unit 1202 is connected in series, and the forward feedback unit 1200 includes an RF signal extractor 1204, a forward feedback loop control unit 1206, and a phase inversion combiner 1208, and a forward feedback loop control unit 1206. ) Is a single functional block including the comparison analysis signal generator 304, the signal controller 306 and the interference noise canceller 308 of FIG. 3 to perform the same functions of the detailed functional blocks of FIG. 8 is a single functional block including a comparative analysis control signal generator 804, an interference noise canceller 806, a time delay unit 808, and a phase shifter 810 of FIG. Function the same It is carried out.

The negative feedback unit 1202 coupled in series with the output of the forward feedback unit 1200 includes an RF signal extractor 1210, a negative feedback loop control unit 1212, and a phase inversion combiner 1214. 1212 is a single functional block including the comparison analysis signal generator 204, the signal controller 206, and the interference noise canceller 208 of FIG. 2, and performs the functions of the detailed functional blocks in FIG. 7 is a single functional block including a comparative analysis control signal generator 704, an interference noise canceller 706, a time delay unit 708, and a phase shifter 710 of FIG. Perform the same function of.

FIG. 13 and FIG. 14 are a scheme for better eliminating feedback signals and various unwanted interference noise signals by applying FIGS. 2, 3, 9, and 10, wherein the adaptive negative feedback unit and the adaptive forward feedback unit are used. An adaptive mixed feedback technique that combines parts in series. This method combines the advantages and disadvantages of the adaptive negative feedback technique with the advantages and disadvantages of the adaptive forward feedback technique, which improves the rejection of interference noise and enables wideband signal processing. It also improves system stability and real-time adaptability.

FIG. 13 is a diagram illustrating an embodiment of a real-time magnetic / adaptive interference noise canceller of an adaptive mixed feedback method in which an adaptive negative feedback method and an adaptive forward feedback method are coupled in series, and an adaptive negative feedback unit 1300 is illustrated in FIG. And adaptive forward feedback (1302) is an adaptive mixed feedback technique connected in series, the adaptive negative feedback unit 1300 is a main path signal splitter (1304), RF signal extractor (1306), error signal detector (1308), negative feedback And a loop control unit 1310 and a phase inversion combiner 1312. The negative feedback loop control unit 1310 includes a comparison analysis signal generator 204, a signal controller 206, and an interference noise canceller 208 of FIG. 2. The same function of the detailed functional block in FIG. 2 is performed as a single functional block, and the comparative analysis control signal generator 906, the interference noise canceller 908, the time delay unit 910 and the phase of FIG. Include a converter 912 A high single functional block in the same manner carry out the functions of the fine functional blocks in the Fig. In addition, the error signal detector 1308 performs the same function as the error signal detector 904 of FIG. 9.

The adaptive forward feedback unit 1302 coupled in series with the output of the adaptive negative feedback unit 1300 includes an RF signal extractor 1314, an output signal divider 1316, an error signal detector 1318, and a forward feedback loop controller 1320. And a phase inversion combiner 1322, and the forward feedback loop control unit 1320 is a single functional block including the comparison analysis signal generator 304, the signal controller 306, and the interference noise canceller 308 of FIG. 3 performs the same function as the detailed functional block in FIG. 3, and compares and analyzes the control signal generator 1006, the interference noise canceller 1008, the time delay unit 1010, and the phase shifter 1012 of FIG. 10. The function of the detailed functional block in FIG. 10 is the same as a single functional block including a. In addition, the error signal detector 1318 performs the same function as the error signal detector 1004 of FIG.

FIG. 14 is a block diagram of an embodiment of a real-time magnetic / adaptive interference noise canceller of an adaptive mixed feedback method in which an adaptive forward feedback method and an adaptive subfeedback method are coupled in series, and an adaptive forward feedback unit 1400 is illustrated. And adaptive sub-feedback unit 1402 is an adaptive mixed feedback technique coupled in series. The adaptive forward feedback unit 1400 is an RF signal extractor 1404, a forward output signal splitter 1406, an error signal detector 1408, and a forward direction. It consists of a feedback loop control unit 1410 and a phase inversion combiner 1412, the forward feedback loop control unit 1410 is the comparison analysis signal generator 304, the signal controller 306 and the interference noise canceller 308 of FIG. The same function of the detailed functional block in FIG. 3 as a single functional block including the same, the comparative analysis control signal generator 1006, the interference noise canceller 1008, the time delay unit 1010 andAnd a phase change switching 1012, and the same carry out the functions of the functional block diagram of the detail in Figure 10 as a single functional block in. In addition, the forward output signal divider 1406 performs the same function as that of the output signal divider 1000 of FIG. 10, and the error signal detector 1408 has the same function as the error signal detector 1004 of FIG. 10. Perform.

The adaptive negative feedback unit 1402 coupled in series with the output of the adaptive forward feedback unit 1400 includes a negative feedback input signal divider 1414, an RF signal extractor 1416, an error signal detector 1418, and a negative feedback loop controller ( 1420 and the phase inversion combiner 1422, the negative feedback loop control unit 1420 is a single signal including the comparative analysis signal generator 204, the signal controller 206 and the interference noise canceller 208 of FIG. As a functional block, the functions of the detailed functional blocks of FIG. 2 are performed in the same manner, and the comparative analysis control signal generator 906, the interference noise canceller 908, the time delay unit 910, and the phase shifter of FIG. As a single functional block including 912, the functions of the detailed functional blocks in FIG. 9 are performed in the same manner. In addition, the negative feedback input signal divider 1414 performs the same function as the main path signal divider 900 of FIG. 9, and the error signal detector 1418 is the same as the error signal detector 904 of FIG. 9. Perform the function.

7 to 14, an interference noise canceller which is a feedback and interference noise signal component and a loop output signal for the purpose of eliminating the desired information signal and the feedback and unwanted interference noise signal of the main path signal received through the receiving antenna The amplitude, phase, and time delay of the output signal (rejection signal or corresponding signal) of C must satisfy the following requirements. That is, the amplitude, phase, and time delay of the loop output signal (removal signal or corresponding signal) are the same magnitude as the feedback signal and the interference noise signal to be canceled among the signals of the main path, the phase difference of 180 degrees, and the same time. It should have a value of delay. Thus, for this purpose, it is possible to add or remove the time delay and phase shift parts as necessary in the loop other than the main path. In addition, the system can be configured to adjust the gain using amplifiers or attenuators at the points needed to adjust the amplitude of the same magnitude.

13 and 14 have the same functional blocks, but the main feedback loop is divided according to whether the negative feedback loop or the forward feedback loop is applied, and the configuration of FIG. 13 is the adaptive negative feedback loop and the adaptive forward feedback. The loops are coupled in series with each other in a forward and backward relationship. In the configuration of FIG. 14, the adaptive forward feedback loop and the adaptive negative feedback loop are coupled in series with each other in a forward and backward relationship.

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be apparent to those of ordinary knowledge.

As described above, the present invention is to remove various interference noises introduced through the receiving antenna of the receiver in various wireless communication systems, and has the following effects.

First, when various interference noises generated from feedback of a transmission signal and wireless space are introduced together with an information signal through a reception antenna, it is possible to remove feedback signals, which are unwanted signals, and interference noises generated from wireless space.

Second, it is possible to adapt to various environments in real time by applying real-time adaptive technology.

Third, it is possible to remove the feedback signal to prevent the oscillation caused by the radio signal output from the transmitting antenna to the input antenna, it is possible to prevent the oscillation.

Fourthly, in the wireless communication system applying the CDMA technology, the wireless path interference noise and feedback interference noise signal components, which are unwanted signals other than the desired signals received from the wireless path, are despread using each user's PN signal. The unwanted interference noise signal component received purely systemically can be eliminated before.

Fifthly, it is possible to prevent the feedback signal which is frequently generated in the wireless repeater system, so that the output of the wireless repeater system can be increased by improving the separation of input / output signals of the wireless repeater system. The service area and coverage can be widened.

Sixth, the cost can be reduced by sharing the space between the transmitting and receiving antennas of the same system, sharing materials for antenna installation, and sharing the space with other communication systems, and also easy to manage and maintain by sharing the system installation space. In addition, communication quality can be improved by minimizing interference to the wireless communication system.

Seventh, by reducing the feedback signal and interference noise to reduce the impact on the radio repeater and the base station to prevent abnormal conditions and oscillation of the base station, to prevent the saturation state of the base station, it is possible to smooth the service of the base station.

Eighthly, the above-mentioned effects can improve the quality of service, the stability of the system and the performance of the system, thereby increasing subscriber capacity.

Ninth, by simply connecting to an existing system, it is possible to improve the efficiency of the system by removing and suppressing the interference noise signal components flowing into the CDMA base station receiver, and smoothly transmit the CDMA information signal.

Tenth, in order to prevent the difficulty of baseband signal processing, by directly converting and using the received RF analog signal, the ease of development is secured, and the feedback signal and the interference noise signal component are before the despreading of the received signal. Can be removed.

Eleventh, it is possible to flexibly cope with the frequency allocation regulation, the deployment / operation of the base station system, and the frequency usage status.

Twelfth, it can be applied to a terminal or the like by light and short reduction.

Thirteenth, it is possible to apply to cellular, PCS system, IMT-2000 system and CDMA technology which are currently commercialized by simple modification.

Claims (29)

In the real-time magnetic / adaptive interference noise cancellation device applying the feedback method applied to a wireless communication system, RF signal extraction means for dividing the received radio frequency (RF) signal by a predetermined ratio; Comparative analysis signal generating means for comparing and analyzing the RF signal extracted by the RF signal extracting means with a reference signal for removing the interference noise component from the received signal components, and generating a comparative analysis signal; A signal for determining an optimal variable conversion control value so as to convert an elimination signal (corresponding signal) for removing the received interference noise into an optimal value using the comparative analysis signal generated by the comparative analysis signal generating means. Control means; The reference signal is controlled according to the optimum output value of the signal control means to adjust the amplitude, phase and time delay of the received feedback signal and the interference noise to be removed, and to remove the interference noise generating a cancellation signal (corresponding signal) as a result of the adjustment. Way; And Phase inversion combining means for combining the received RF signal and the cancellation signal (corresponding signal) to transmit only the desired signal through the main path, and to remove unwanted feedback and interference noise signals. Applied real-time magnetic / adaptive interference noise cancellation device using a feedback method including a. The method of claim 1, Time delay means for adjusting the time delay of the output signal (removal signal, corresponding signal) of the interference noise removing means; Applied real-time magnetic / adaptive interference noise cancellation device further comprising a feedback method. The method of claim 1, Phase conversion means for adjusting the amplitude and phase of the output signal (removal signal, corresponding signal) of the interference noise removing means; Applied real-time magnetic / adaptive interference noise cancellation device further comprising a feedback method. The method of claim 1, A main path signal distributed by a proportional distribution of main path signals (signals including desired and unwanted interference noise) received through a receiving antenna, and main path signals and the interference noise removing means by the phase inversion coupling means; A comparison analysis control signal generating unit extracts only an error signal by comparing a distribution signal distributed proportionally with respect to an output signal (including a small amount of residual error signal) from which an unwanted interference noise signal is removed by combining an output signal of Error signal detection means for transmitting to (comparative analysis signal generation means + signal control means) Applied real-time magnetic / adaptive interference noise cancellation device further comprising a feedback method. The method of claim 1, The reference signal is, A signal that provides a criterion for removing feedback signals and various interference noise components generated in a wireless space among received signal components received through a reception antenna. A dual polarization antenna having two orthogonal polarizations or a reference ( Pilot) A module that generates a signal, or extracts and uses an output signal of a transmitting antenna from a transmitting / receiving antenna spaced by a predetermined distance, or a database or a look-up table created by a test Feedback method using a method of spreading a pilot signal using a PN code or a pseudo noise code that is not used by the system. Applied real-time magnetic and adaptive interference noise canceller. The method of claim 1, The comparative analysis signal generating means, By detecting the amount of change in the feedback signal or various interference noises generated in the wireless space by using the weak error signal, the corresponding signal generated by the interference noise removing means continuously tracks the amplitude, phase, and time delay of the unwanted signal. Apparatus for removing real-time magnetic and adaptive interference noise using a feedback method, characterized in that for generating a control signal. The method of claim 6, The comparative analysis signal generating means, By detecting the level of the error signal remaining without being removed by the output signal (corresponding signal) of the interference noise removing means to continuously track and monitor the change of the feedback signal and various interference noise signals, and the feedback signal and various interference noise signals In order to continuously track / monitor, output value proportional to the magnitude of the error signal is generated, the closed loop operation is controlled, and the output is maintained at the current state when the error signal indicates a value of zero ("0"). Real-time magnetic and adaptive interference noise elimination device using a feedback method characterized in that it can control the output having an algebraic linear change. The method of claim 7, wherein The error signal is, Remains due to the imperfection of the phase inversion coupling means, and is distributed in the RF signal extraction means of the main path, and thus the amplitude, phase and time delay variables are passed through the comparative analysis signal generating means, the signal control means and the interference noise removing means. Is adjusted to form a continuous feedback loop to be recombined in the phase inversion coupling means real-time magnetic / adaptive interference noise elimination apparatus applied to the feedback technique. The method of claim 1, The signal control means, By using the output values of the in-phase (I) signal component and the inverse (Q) signal component of the comparison analysis signal generating means to generate direct drive data and a driving value capable of driving the interference noise removing means to the interference noise removing means. Real-time magnetic / adaptive interference noise elimination device applying a feedback method characterized in that the transmission. The method of claim 9, The signal control means, Using the two signals (I / Q signals) output from the comparative analysis signal generating means to transmit the driving signal for driving the interference noise removing means to the interference noise removing means, Depending on the purpose of the signal controller, the function of the function may be implemented in various ways depending on the driving signal in which the interference noise removing means is driven, depending on whether the output I / Q signal of the comparative analysis signal generating means is a digital signal or an analog signal. Possible, acts as a bypass, More specifically, when the in-phase (I) signal component and the inverse (Q) signal component are input to the signal controller as digital values or are input as analog values, an internal database (DB) or look-up table (Look-) up table) and the real-time magnetic force using the feedback technique, which can implement functions and circuits in various ways depending on whether the interference signal is removed and the driving signal (analog signal or digital signal). Adaptive / Adaptive Interference Noise Canceller. The method of claim 1, The interference noise removing means, In order to remove a desired signal component from a signal received through a receiving antenna, a signal having a same amplitude and phase that is 180 degrees different from an unwanted signal component is generated, and the in-phase (I) signal component transmitted from the signal control means and the inverse phase (Q) A feedback method using a signal component to generate a signal having an amplitude equal to 180 degrees out of phase with an unwanted signal to be removed by adjusting the amplitude, phase, and time delay parameters of the reference signal. Real-time magnetic / adaptive interference noise elimination device. The method of claim 1, The phase inversion coupling means, the RF signal extracting means, the comparative analysis signal generating means, the signal control means and the interference noise removing means, The loop output signal (output signal of the interference noise canceling means) is combined with the RF input signal and the negative feedback (Negative Feedback) in the phase inversion coupling means, and when the negative feedback coupling is performed, RF input signal when the amplitude and phase of the unwanted signal components included in the input signal are the same as the amplitude and magnitude of the output signal of the negative feedback loop (output signal of the interference noise canceling means) and the phase is 180 degrees different. Apparatus for eliminating real-time magnetic and adaptive interference noise by applying a feedback method, characterized in that unwanted signal components included in the signal are removed. The method of claim 1, The phase inversion coupling means, the RF signal extracting means, the comparative analysis signal generating means, the signal control means and the interference noise removing means, The loop output signal (the output signal of the interference noise canceling means) is combined with the RF input signal in the phase inversion coupling means and the forward feedback coupling, and when the forward feedback coupling is performed, the RF input is configured. If the amplitude and phase of an unwanted signal component included in the signal are the same as the amplitude and magnitude of the output signal of the forward feedback loop (the output signal of the interference noise canceling means) and the phase is 180 degrees out of the RF input signal, Apparatus for removing real-time magnetic and adaptive interference noise by applying a feedback method, characterized in that unwanted signal components are included. The method according to any one of claims 1 to 13, A negative feedback loop comprising the RF signal extracting means, the comparative analysis signal generating means, the signal control means and the interference noise removing means, and a negative feedback loop control means, and the phase inversion coupling means, A forward feedback loop including the RF signal extracting means, the comparative analysis signal generating means, the signal control means and the interference noise canceling means, and the phase inversion coupling means, and constitute a forward feedback loop, Combining the forward feedback loop in series with the negative feedback loop to form a mixed feedback loop, and the output value of the negative feedback loop as an input of the forward feedback loop to generate a feedback signal received through a receiving antenna and generated in a wireless space Real-time magnetic / adaptive interference noise elimination device applying a feedback technique characterized in that to remove a variety of interference noise. The method of claim 14, A main path signal distribution means, the RF signal extraction means, the error signal detection means, the negative feedback loop control means, and the phase inversion coupling means to constitute an adaptive negative feedback loop, The RF signal extracting means, an output signal distribution means, the error signal detection means, the forward feedback loop control means, and the phase inversion coupling means to constitute an adaptive forward feedback loop, A feedback signal received through a receiving antenna by combining the adaptive forward feedback loop in series with the adaptive negative feedback loop to form an adaptive mixed feedback loop, and using the output value of the adaptive feedback feedback loop as an input of the adaptive forward feedback loop; Real-time magnetic and adaptive interference noise elimination device using a feedback technique characterized in that to remove various interference noises generated in the wireless space. The method according to any one of claims 1 to 13, A forward feedback loop including the RF signal extracting means, the comparative analysis signal generating means, the signal control means and the interference noise removing means, and the phase inversion coupling means, and constitute a forward feedback loop, A negative feedback loop including the RF signal extracting means, the comparative analysis signal generating means, the signal control means and the interference noise removing means, and the phase inversion combining means, Combining the sub-feedback loop in series with the forward feedback loop to form a mixed feedback loop, and the output signal of the forward feedback loop as the input of the sub-feedback loop generated in the feedback signal received through the receiving antenna and in the wireless space Real-time magnetic / adaptive interference noise elimination device applying a feedback technique characterized in that to remove a variety of interference noise. The method of claim 16, The RF signal extracting means, the output signal distributing means, the error signal detecting means, the forward feedback loop control means, and the phase inversion combining means to constitute an adaptive forward feedback loop, A main path signal distribution means, the RF signal extraction means, the error signal detection means, the negative feedback loop control means, and the phase inversion coupling means to constitute an adaptive negative feedback loop, A feedback signal received through a receiving antenna by combining the adaptive feedback feedback loop in series with the adaptive forward feedback loop to form an adaptive mixed feedback loop, and using an output value of the adaptive forward feedback loop as an input of the adaptive feedback feedback loop; Real-time magnetic and adaptive interference noise elimination device using a feedback technique characterized in that to remove various interference noises generated in the wireless space. In the real-time magnetic / adaptive interference noise cancellation device applying the feedback method applied to a wireless communication system, Signal extracting means for extracting a portion of a signal passing through the main path to remove unwanted interference noise signal components from the received signal of the main path, including a desired signal and unwanted interference noise; Comparing and analyzing the received signal received through the main path and the received signal of the main path and the auxiliary path using the reference signal received through the auxiliary path for detecting the interference noise, and generates a control signal for removing the interference signal Comparative analysis signal generating means; Signal control means for forming and outputting control data for optimal interference noise cancellation using the output signal of the comparative analysis signal generating means; Interference noise removing means for adjusting an amplitude coefficient and a phase coefficient to an appropriate value for the removal of the interference noise received through the main path from the reference signal received through the control data output and the auxiliary path of the signal control means; And A feedback loop is formed with the means to remove the interference noise which is an unwanted signal component received through the main path, and the output signal of the feedback loop is 180 degrees to remove the interference noise which is an unwanted signal component of the main path. Phase inversion coupling means for combining by inverting phase Applied real-time magnetic / adaptive interference noise cancellation device using a feedback method including a. The method of claim 18, Time delay means for adjusting the time delay of the output signal (removal signal, corresponding signal) of the interference noise removing means; Applied real-time magnetic / adaptive interference noise cancellation device further comprising a feedback method. The method of claim 18, Phase conversion means for adjusting the amplitude and phase of the output signal (removal signal, corresponding signal) of the interference noise removing means; Applied real-time magnetic / adaptive interference noise cancellation device further comprising a feedback method. The method of claim 18, A main path signal distributed by a proportional distribution of main path signals (signals including desired and unwanted interference noise) received through a receiving antenna, and main path signals and the interference noise removing means by the phase inversion coupling means; A comparison analysis control signal generating unit extracts only an error signal by comparing a distribution signal distributed proportionally with respect to an output signal (including a small amount of residual error signal) from which an unwanted interference noise signal is removed by combining an output signal of Error signal detection means for transmitting to (comparative analysis signal generation means + signal control means) Applied real-time magnetic / adaptive interference noise cancellation device further comprising a feedback method. The method of claim 18, The feedback loop, Substantially, the unwanted interference (interference noise) signal generated in the radio space or the signal transmitted through the transmitting antenna is fed back to the receiving antenna and the feedback interference noise signal introduced with the received information signal flows in real time with magnetic / adaptability. Eliminates real-time magnetic / adaptive interference noise by applying feedback technique, which is a negative feedback loop that can improve the quality of the received information signal and improve the efficiency of the system by eliminating interference noise. Device. The method of claim 18, The feedback loop, Substantially, the unwanted interference (interference noise) signal generated in the wireless space or the signal transmitted through the transmitting antenna is fed back to the receiving antenna and the feedback interference noise signal introduced with the received information signal with the real-time magnetic / adaptability Real-time magnetic / adaptive interference noise elimination device using feedback technique characterized in that it is a forward feedback loop that can improve the quality of the received information signal and improve the efficiency of the system by eliminating the interference noise. . The method according to any one of claims 18 to 23, A negative feedback loop including the signal extracting means, the comparative analysis signal generating means, the signal control means and the interference noise removing means, and the phase inversion coupling means, A forward feedback loop including the signal extracting means, the comparative analysis signal generating means, the signal control means and the interference noise removing means, and the phase inversion coupling means, and constitute a forward feedback loop, Combining the forward feedback loop in series with the negative feedback loop to form a mixed feedback loop, and the output value of the negative feedback loop as an input of the forward feedback loop to generate a feedback signal received through a receiving antenna and generated in a wireless space Real-time magnetic / adaptive interference noise elimination device applying a feedback technique characterized in that to remove a variety of interference noise. The method of claim 24, A main path signal distribution means, the signal extraction means, the error signal detection means, the negative feedback loop control means, and the phase inversion coupling means to constitute an adaptive negative feedback loop, The signal extraction means, the output signal distribution means, the error signal detection means, the forward feedback loop control means, and the phase inversion coupling means to constitute an adaptive forward feedback loop, A feedback signal received through a receiving antenna by combining the adaptive forward feedback loop in series with the adaptive negative feedback loop to form an adaptive mixed feedback loop, and using the output value of the adaptive feedback feedback loop as an input of the adaptive forward feedback loop; Real-time magnetic and adaptive interference noise elimination device using a feedback technique characterized in that to remove various interference noises generated in the wireless space. The method according to any one of claims 18 to 23, A forward feedback loop including the signal extracting means, the comparative analysis signal generating means, the signal control means and the interference noise canceling means, and a phase inversion coupling means, and constitute a forward feedback loop, A negative feedback loop including the signal extracting means, the comparative analysis signal generating means, the signal control means and the interference noise removing means, and a negative feedback loop control means, and the phase inversion coupling means, Combining the sub-feedback loop in series with the forward feedback loop to form a mixed feedback loop, and the output signal of the forward feedback loop as the input of the sub-feedback loop generated in the feedback signal received through the receiving antenna and in the wireless space Real-time magnetic / adaptive interference noise elimination device applying a feedback technique characterized in that to remove a variety of interference noise. The method of claim 26, The signal extracting means, the output signal distributing means, the error signal detecting means, the forward feedback loop control means, and the phase inversion combining means to constitute an adaptive forward feedback loop, A main path signal distribution means, the signal extraction means, the error signal detection means, the negative feedback loop control means, and the phase inversion coupling means to constitute an adaptive negative feedback loop, A feedback signal received through a receiving antenna by combining the adaptive feedback feedback loop in series with the adaptive forward feedback loop to form an adaptive mixed feedback loop, and using an output value of the adaptive forward feedback loop as an input of the adaptive feedback feedback loop; Real-time magnetic and adaptive interference noise elimination device using a feedback technique characterized in that to remove various interference noises generated in the wireless space. In the real-time magnetic / adaptive interference noise cancellation method applying the feedback method applied to a wireless communication system, Extracting a portion of the signal passing through the main path to remove unwanted interference noise signal components from the received signal of the received main path, including the desired signal and unwanted interference noise; Comparing and analyzing the received signal received through the main path and the received signal of the main path and the auxiliary path using the reference signal received through the auxiliary path for detecting the interference noise, and generates a control signal for removing the interference noise Second step; A third step of forming and outputting control data for optimal interference noise cancellation using the control signal; Adjusting an amplitude coefficient and a phase coefficient for removing interference noise received through a main path from a reference signal received through the control data and an auxiliary path; And A fifth step of removing unwanted interference noise by combining a signal having an amplitude equal to the amplitude of the unwanted interference noise signal adjusted in the fourth step and having a phase difference of 180 degrees with the interference noise signal received through the receiving antenna; Real-time magnetic / adaptive interference noise cancellation method using a feedback method including a. In the real-time magnetic / adaptive interference noise canceller having a processor, A first function of extracting a portion of a signal passing through the main path to remove unwanted interference noise signal components from the received signal of the received main path, including the desired signal and unwanted interference noise; Comparing and analyzing the received signal received through the main path and the received signal of the main path and the auxiliary path using the reference signal received through the auxiliary path for detecting the interference noise, and generates a control signal for removing the interference noise Second function; A third function of forming and outputting control data for optimal interference noise cancellation using the control signal; A fourth function of adjusting an amplitude coefficient and a phase coefficient for canceling the interference noise received through the main path from the reference signal received through the control data and the auxiliary path; And A fifth function of combining the signal having an amplitude equal to the amplitude of the unwanted interference noise signal adjusted in the fourth step with a phase difference of 180 degrees with the interference noise signal received through the receiving antenna to remove unwanted interference noise; A computer-readable recording medium having recorded thereon a program for realizing this.