CN101827049B - Remote equipment, adaptive equalization device and realization methods based on GSM (Global System for Mobile Communications) system - Google Patents
Remote equipment, adaptive equalization device and realization methods based on GSM (Global System for Mobile Communications) system Download PDFInfo
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Abstract
The invention discloses remote equipment, an adaptive equalization device of the remote equipment and realization methods of the remote equipment and the adaptive equalization device, which are all based on a GSM (Global System for Mobile Communications) system. On the basis of the traditional remote equipment, the remote equipment also comprises a coupler, a feedback radio frequency circuit, a compensation unit, an analog-to-digital conversion unit and an adaptive equalization computing unit, wherein the input end of the compensation unit is used for receiving various carrier signals, the output end of the compensation unit is connected with the input end of the coupler after sequentially passing through a digital up-conversion unit, the analog-to-digital conversion unit, a downstream radio frequency circuit and a power amplifier, one output end of the coupler is connected with an antenna, and the other output end of the coupler is connected with the control end of the compensation unit after sequentially passing through the feedback radio frequency circuit, the analog-to-digital conversion unit and the adaptive equalization unit. The invention ensures that the carrier signals of all frequencies emitted by the remote equipment have same coverage area, thereby guaranteeing the normal operation of a GSM coverage network.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to a kind of remote device based on the GSM standard, based on the implementation method of the remote device of GSM standard, based on the adaptive equalization device of GSM standard remote device and the implementation method of this adaptive equalization device.
Background technology
Along with the development of gsm communication technology, GSM network Large scale construction reaches its maturity.Behind large-scale network-estabilishing, the network optimization is the fresh target that each common carrier is pursued.The advantages such as GSM standard remote device is reasonable, with low cost with its applying flexible, coverage, function admirable in the gsm communication network optimization, more and more come into one's own, and have obtained extensive use.
The basic structure of GSM standard remote device in the prior art such as Fig. 1, this remote device is comprised of digital circuit, radio circuit, power amplifier, antenna, the input of digital circuit is used for receiving each carrier signal of input, and output is connected with antenna by radio circuit, power amplifier successively; The digital baseband signal digital-to-analogue conversion that each carrier signal that digital circuit is used for input is combined into a railway digital baseband signal, also will close behind the road is that analog signal output is to radio circuit, radio circuit is removed this analog signal and frequently is treated to radiofrequency signal and outputs to power amplifier and amplify processing, and the signal of power amplifier output is gone out through antenna transmission.Yet, because output signal is unbalanced in the effective band that radio circuit and power amplifier cause, can cause the GSM carrier signal that power is identical, frequency is different of digital circuit output, through radio circuit and the power amplifier signal that power output is different, frequency is different afterwards, thereby the GSM carrier signal coverage that the power that causes different frequency is identical is different, directly affects the application of GSM standard remote device.
For example, as shown in Figure 2, carrier wave 1 and the carrier wave 2 of digital circuit output different frequency, its power is respectively P1 and P2, and P1 equals P2, and size is a, carrier wave 1 and carrier wave 2 are through after radio circuit and the power amplifier, as shown in Figure 3, power output is respectively the signal of P3=b and P4=c, and this is that non-equilibrium in radio circuit and power amplifier causes but P3 is not equal to P4..
Summary of the invention
The invention provides a kind of remote device based on the GSM standard, based on the implementation method of the remote device of GSM standard, based on the adaptive equalization device of GSM standard remote device and the implementation method of this adaptive equalization device, it can compensate the non-equilibrium of radio circuit and power amplifier.
Technical scheme of the present invention is:
A kind of remote device based on the GSM standard, comprise digital circuit, downlink radio frequency circuit, power amplifier, antenna, coupler and feedback radio circuit, described digital circuit comprises compensating unit, Digital Up Convert unit, D/A conversion unit, AD conversion unit, adaptive equalization computing unit;
The input of described compensating unit is used for receiving each carrier signal, output is connected with the input of described coupler by described Digital Up Convert unit, D/A conversion unit, downlink radio frequency circuit, power amplifier successively, an output of described coupler is connected with described antenna, another output is connected with the control end of described compensating unit by feedback radio circuit, AD conversion unit, adaptive equalization computing unit successively, and the output of described Digital Up Convert unit also is connected with the input of described adaptive equalization computing unit;
Described coupler outputs to antenna with the radiofrequency signal one tunnel of described power amplifier output, another road outputs to the feedback radio circuit, become the feedback digital baseband signal after the down-conversion of the described feedback radio circuit of described another road radiofrequency signal process, the analog-to-digital conversion of AD conversion unit and output to the adaptive equalization computing unit, described Digital Up Convert unit is combined into railway digital baseband signal output with each carrier signal of compensating unit output; Described adaptive equalization computing unit is the digital baseband signal of this feedback digital baseband signal and described Digital Up Convert unit output relatively, calculate the compensating factor of each carrier signal and output to compensating unit according to adaptive algorithm, output to described Digital Up Convert unit after the compensating factor that compensating unit is corresponding with it with each carrier signal multiplies each other.
A kind of implementation method of the remote device based on the GSM standard, comprise step: each carrier signal that will input is combined into a railway digital signal, to this digital signal carry out digital-to-analogue conversion, upconversion process is radiofrequency signal, go out through antenna transmission after again this radiofrequency signal being amplified processing, also comprise step:
Signal after the described amplification that is coupled is processed is the feedback digital baseband signal with this signal down-converted, analog-to-digital conversion;
More described digital baseband signal and described feedback digital baseband signal of closing behind the road calculated the compensating factor of each carrier signal according to adaptive algorithm;
Before each carrier signal that will input was combined into a railway digital baseband signal, the compensating factor that each carrier signal is corresponding with it multiplied each other.
A kind of adaptive equalization device based on GSM standard remote device, described remote device comprises digital circuit, downlink radio frequency circuit, power amplifier and antenna, described digital circuit comprises Digital Up Convert unit, D/A conversion unit, and described adaptive equalization device comprises: coupler, feedback radio circuit, compensating unit, AD conversion unit, adaptive equalization computing unit;
The input of described compensating unit is used for receiving each carrier signal, output is connected with the input of described coupler by described Digital Up Convert unit, D/A conversion unit, downlink radio frequency circuit, power amplifier successively, an output of described coupler is connected with described antenna, another output is connected with the control end of described compensating unit by feedback radio circuit, AD conversion unit, adaptive equalization computing unit successively, and the output of described Digital Up Convert unit also is connected with the input of described adaptive equalization computing unit;
Described coupler outputs to antenna with the radiofrequency signal one tunnel of described power amplifier output, another road outputs to the feedback radio circuit, become the feedback digital baseband signal after the down-conversion of the described feedback radio circuit of described another road radiofrequency signal process, the analog-to-digital conversion of AD conversion unit and output to the adaptive equalization computing unit, described Digital Up Convert unit is combined into railway digital baseband signal output with each carrier signal of compensating unit output; Described adaptive equalization computing unit is the digital baseband signal of this feedback digital baseband signal and described Digital Up Convert unit output relatively, calculate the compensating factor of each carrier signal and output to compensating unit according to adaptive algorithm, output to described Digital Up Convert unit after the compensating factor that compensating unit is corresponding with it with each carrier signal multiplies each other.
A kind of implementation method of the adaptive equalization device based on GSM standard remote device comprises step:
The coupled power amplifier amplifies the signal after processing, and is the feedback digital baseband signal with this signal down-converted, analog-to-digital conversion;
The comparative figures circuit closes digital baseband signal and the described feedback digital baseband signal behind the road, calculates the compensating factor of each carrier signal according to adaptive algorithm;
Each carrier signal of input is outputed to described digital circuit after multiplying each other with the compensating factor that calculates is corresponding.
Remote device based on the GSM standard of the present invention, implementation method based on the remote device of GSM standard, based on the adaptive equalization device of GSM standard remote device and the implementation method of this adaptive equalization device, adaptive equalization computing unit in described remote device and the adaptive equalization device can calculate according to adaptive algorithm the compensating factor of each carrier signal, multiply by mutually the non-equilibrium of the described downlink radio frequency circuit of real time correction and power amplifier by the compensating factor that each carrier signal is corresponding with it, so that power amplifier output power is identical, each carrier signal of different frequency, the carrier signal coverage that has guaranteed each frequency that remote device is launched is identical, thereby has ensured the normal operation of GSM overlay network.
Description of drawings
Fig. 1 is based on the structural principle block diagram of the remote device of GSM standard in the prior art;
Fig. 2 is the frequency of the carrier signal inputted in the prior art and the schematic diagram of power;
Fig. 3 is the frequency of the carrier signal exported in the prior art and the schematic diagram of power;
Fig. 4 is the remote device structural principle block diagram in one embodiment that the present invention is based on the GSM standard;
Fig. 5 is the digital circuit structural principle block diagram in one embodiment that the present invention is based in the remote device of GSM standard.
Embodiment
Remote device based on the GSM standard of the present invention, implementation method based on the remote device of GSM standard, based on the adaptive equalization device of GSM standard remote device and the implementation method of this adaptive equalization device, adaptive equalization computing unit in described remote device and the adaptive equalization device can calculate according to adaptive algorithm the compensating factor of each carrier signal, multiply by mutually the non-equilibrium of the described downlink radio frequency circuit of real time correction and power amplifier by the compensating factor that each carrier signal is corresponding with it, so that power amplifier output power is identical, each carrier signal of different frequency, the carrier signal coverage that has guaranteed each frequency that remote device is launched is identical, thereby has ensured the normal operation of GSM overlay network.
Below in conjunction with accompanying drawing specific embodiments of the invention are done a detailed elaboration.
The present invention is based on the remote device of GSM standard, such as Fig. 4, comprise digital circuit, downlink radio frequency circuit, power amplifier, antenna, coupler and feedback radio circuit; Such as Fig. 5, described digital circuit comprises compensating unit, Digital Up Convert cells D UC, D/A D/A conversion unit, A/D AD conversion unit, adaptive equalization computing unit;
The input of described compensating unit is used for receiving each carrier signal, output is connected with the input of described coupler by described Digital Up Convert unit, D/A conversion unit, downlink radio frequency circuit, power amplifier successively, an output of described coupler is connected with described antenna, another output is connected with the control end of described compensating unit by feedback radio circuit, AD conversion unit, adaptive equalization computing unit successively, and the output of described Digital Up Convert unit also is connected with the input of described adaptive equalization computing unit;
Described coupler outputs to antenna with the radiofrequency signal one tunnel of described power amplifier output, another road outputs to the feedback radio circuit, become the feedback digital baseband signal after the down-conversion of the described feedback radio circuit of described another road radiofrequency signal process, the analog-to-digital conversion of AD conversion unit and output to the adaptive equalization computing unit, described Digital Up Convert unit is combined into railway digital baseband signal output with each carrier signal of compensating unit output; Described adaptive equalization computing unit is the digital baseband signal of this feedback digital baseband signal and described Digital Up Convert unit output relatively, calculate the compensating factor of each carrier signal and output to compensating unit according to adaptive algorithm, output to the Digital Up Convert unit after the compensating factor that compensating unit is corresponding with it with each carrier signal multiplies each other; Carrier signal 1, carrier signal 2...... carrier signal N have been shown among Fig. 5, and corresponding compensating factor is respectively compensating factor a1, compensating factor a2...... compensating factor aN;
Described D/A D/A conversion unit is analog signal with the digital signal digital-to-analogue conversion of Digital Up Convert cells D UC output, upconversion process through the downlink radio frequency circuit is that radiofrequency signal outputs to power amplifier again, outputs to antenna transmission after processing through the amplification of power amplifier again and goes out.
Wherein, the downlink radio frequency circuit can be identical with the radio circuit function of traditional transmitter, and it can also carry out filtering to the digital signal of Digital Up Convert unit output, amplify and process.Feedback radio circuit can also gain to the signal of coupler output adjustments, filtering processing.Antenna can be identical with the antenna function of traditional transmitter.
Beginning carrier signal to input at compensating unit compensates when processing, the initial value of compensating factor can be set to 1, constantly updated the numerical value of compensating factor by the adaptive equalization computing unit, the amplitude of each carrier signal is through after the compensation of compensating factor, the loss of the lack of balance that causes with downlink radio frequency circuit and power amplifier equates, so that the carrier signal coverage of each frequency of remote device emission is identical, ensured the normal operation of GSM overlay network.
In the specific implementation, described adaptive equalization computing unit, specifically can comprise: extraction unit, computing unit and processing unit, one end of described extraction unit is connected with the output of described Digital Up Convert unit and the output of described AD conversion unit respectively, and the other end is connected with the control end of described compensating unit by computing unit, processing unit;
Described extraction unit extracts the descending digital baseband signal in each road from the described digital baseband signal that closes behind the road, and extracts feedback digital baseband signal corresponding to the descending digital baseband signal in each road from described feedback digital baseband signal;
Described computing unit calculates the power of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu, and calculates the power gain of each road carrier signal according to the power meter of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu;
Described processing unit (can be selected the road carrier signal that the operator relatively trusts take the power gain of one tunnel carrier signal wherein as the benchmark gain when selecting this road carrier signal, the mean value of power gain that can certainly each road carrier signal gains as benchmark), calculate respectively the ratio of the power gain of this benchmark gain and other each road carrier signals, this each ratio is the compensating factor of each carrier signal, and each compensating factor that will calculate outputs to described compensating unit.
Certain described adaptive equalization computing unit can comprise also that specifically other similar realizations calculate the structure of the compensating factor of each carrier signal.
The present invention has also disclosed a kind of implementation method of the remote device based on the GSM standard, comprises step:
Each carrier signal of input is combined into a railway digital baseband signal, it is radiofrequency signal (can also comprise that to the processing of this digital signal amplification, filtering processes) that this digital baseband signal is carried out digital-to-analogue conversion, upconversion process, again will this radiofrequency signal amplifies and go out through antenna transmission after processing;
Signal after the described amplification that is coupled is processed is the feedback digital baseband signal with this signal down-converted, analog-to-digital conversion; Processing to this feedback digital baseband signal can also comprise filtering, gain adjustment processing;
More described digital baseband signal and described feedback digital baseband signal of closing behind the road calculated the compensating factor of each carrier signal according to adaptive algorithm;
Before the carrier signal with input was combined into a railway digital baseband signal, the compensating factor that each carrier signal is corresponding with it multiplied each other.
When the compensating factor that each carrier signal is corresponding with it multiplies each other, the initial value of compensating factor can be set to 1, can constantly update according to adaptive algorithm the numerical value of compensating factor, the amplitude of each carrier signal is through after the compensation of compensating factor, the loss of processing the lack of balance that causes with digital-to-analogue conversion, upconversion process, amplification equates, so that the carrier signal coverage of each frequency that the process antenna transmission is gone out is identical, thereby ensured the normal operation of GSM overlay network.
In the specific implementation, step, more described digital baseband signal and described feedback digital baseband signal of closing behind the road calculated the compensating factor of each carrier signal according to adaptive algorithm, be specifically as follows:
From the described digital baseband signal that closes behind the road, extract the descending digital baseband signal in each road, and from described feedback digital baseband signal, extract feedback digital baseband signal corresponding to the descending digital baseband signal in each road;
Calculate the power of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu, and calculate the power gain of each road carrier signal according to the power meter of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu;
(when selecting this road carrier signal, can select the road carrier signal that the operator relatively trusts take the power gain of one tunnel carrier signal wherein as the benchmark gain, the mean value of power gain that can certainly each road carrier signal gains as benchmark), calculate respectively the ratio of the power gain of this benchmark gain and other each road carrier signals, this each ratio is the compensating factor of each carrier signal.
Can certainly calculate compensating factor by other adaptive algorithm.
The present invention has also disclosed a kind of adaptive equalization device based on GSM standard remote device, described remote device is identical with the structure of GSM standard remote device of the prior art, it comprises digital circuit, downlink radio frequency circuit, power amplifier and antenna, this digital circuit comprises Digital Up Convert unit, D/A conversion unit, and described adaptive equalization device comprises: coupler, feedback radio circuit, compensating unit, AD conversion unit, adaptive equalization computing unit;
The input of described compensating unit is used for receiving each carrier signal, output is connected with the input of described coupler by described Digital Up Convert unit, D/A conversion unit, downlink radio frequency circuit, power amplifier successively, an output of described coupler is connected with described antenna, another output is connected with the control end of described compensating unit by feedback radio circuit, AD conversion unit, adaptive equalization computing unit successively, and the output of described Digital Up Convert unit also is connected with the input of described adaptive equalization computing unit;
Described coupler outputs to antenna with the radiofrequency signal one tunnel of described power amplifier output, another road outputs to the feedback radio circuit, become the feedback digital baseband signal after the down-conversion of the described feedback radio circuit of described another road radiofrequency signal process, the analog-to-digital conversion of AD conversion unit and output to the adaptive equalization computing unit, described Digital Up Convert unit is combined into railway digital baseband signal output with each carrier signal of compensating unit output; Described adaptive equalization computing unit is the digital baseband signal of this feedback digital baseband signal and described Digital Up Convert unit output relatively, calculate the compensating factor of each carrier signal and output to compensating unit according to adaptive algorithm, output to described Digital Up Convert unit after the compensating factor that compensating unit is corresponding with it with each carrier signal multiplies each other.
Beginning carrier signal to input at compensating unit compensates when processing, the initial value of compensating factor can be set to 1, constantly updated the numerical value of compensating factor by the adaptive equalization computing unit, the amplitude of each carrier signal is through after the compensation of compensating factor, the loss of the lack of balance that causes with downlink radio frequency circuit and power amplifier equates, so that the carrier signal coverage of each frequency of remote device emission is identical, ensured the normal operation of GSM overlay network.
Described adaptive equalization computing unit, can comprise during implementation: extraction unit, computing unit and processing unit, one end of described extraction unit is connected with the output of described Digital Up Convert unit and the output of described AD conversion unit respectively, and the other end is connected with the control end of described compensating unit by computing unit, processing unit;
Described extraction unit extracts the descending digital baseband signal in each road from the described digital baseband signal that closes behind the road, and extracts feedback digital baseband signal corresponding to the descending digital baseband signal in each road from the feedback digital baseband signal of described AD conversion unit output;
Described computing unit calculates the power of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu, and calculates the power gain of each road carrier signal according to the power meter of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu;
Described processing unit is so that wherein the power gain of one tunnel carrier signal or the average power of each road carrier signal gain as the benchmark gain, calculate respectively the ratio of the power gain of this benchmark gain and other each road carrier signals, this each ratio is the compensating factor of each carrier signal, and each compensating factor that will calculate outputs to described compensating unit.
The present invention has also disclosed a kind of implementation method of the adaptive equalization device based on GSM standard remote device, this GSM standard remote device is identical with the structure of GSM standard remote device of the prior art, the method of this adaptive equalization device processing signals comprises step:
The coupled power amplifier amplifies the signal after processing, and is the feedback digital baseband signal with this signal down-converted, analog-to-digital conversion;
The comparative figures circuit closes digital baseband signal and the described feedback digital baseband signal behind the road, calculates the compensating factor of each carrier signal according to adaptive algorithm;
Each carrier signal of input is outputed to described digital circuit after multiplying each other with the compensating factor that calculates is corresponding.
Wherein, step, the comparative figures circuit closes digital baseband signal and the described feedback digital baseband signal behind the road, calculates the compensating factor of each carrier signal according to adaptive algorithm, can comprise during implementation:
Extract the descending digital baseband signal in each road the digital baseband signal after described digital circuit is closed the road, and from described feedback digital baseband signal, extract feedback digital baseband signal corresponding to the descending digital baseband signal in each road;
Calculate the power of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu, and calculate the power gain of each road carrier signal according to the power meter of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu;
So that wherein the power gain of one tunnel carrier signal or the average power of each road carrier signal gain as the benchmark gain, calculate respectively the ratio of the power gain of this benchmark gain and other each road carrier signals, this each ratio is the compensating factor of each carrier signal.
In sum, remote device based on the GSM standard of the present invention, implementation method based on the remote device of GSM standard, based on the adaptive equalization device of GSM standard remote device and the implementation method of this adaptive equalization device, adaptive equalization computing unit in described remote device and the adaptive equalization device can calculate according to adaptive algorithm the compensating factor of each carrier signal, multiply by mutually the non-equilibrium of the described downlink radio frequency circuit of real time correction and power amplifier by the compensating factor that each carrier signal is corresponding with it, so that power amplifier output power is identical, each carrier signal of different frequency, the carrier signal coverage that has guaranteed each frequency that remote device is launched is identical, thereby has ensured the normal operation of GSM overlay network.
Above-described embodiment of the present invention does not consist of the restriction to protection range of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection range of the present invention.
Claims (8)
1. remote device based on the GSM standard, comprise digital circuit, downlink radio frequency circuit, power amplifier and antenna, it is characterized in that, also comprise: coupler and feedback radio circuit, described digital circuit comprises compensating unit, Digital Up Convert unit, D/A conversion unit, AD conversion unit, adaptive equalization computing unit;
The input of described compensating unit is used for receiving each carrier signal, output is connected with the input of described coupler by described Digital Up Convert unit, D/A conversion unit, downlink radio frequency circuit, power amplifier successively, an output of described coupler is connected with described antenna, another output is connected with the control end of described compensating unit by feedback radio circuit, AD conversion unit, adaptive equalization computing unit successively, and the output of described Digital Up Convert unit also is connected with the input of described adaptive equalization computing unit;
Described coupler outputs to antenna with the radiofrequency signal one tunnel of described power amplifier output, another road outputs to the feedback radio circuit, become the feedback digital baseband signal after the down-conversion of the described feedback radio circuit of described another road radiofrequency signal process, the analog-to-digital conversion of AD conversion unit and output to the adaptive equalization computing unit, described Digital Up Convert unit is combined into railway digital baseband signal output with each carrier signal of compensating unit output; Described adaptive equalization computing unit is the digital baseband signal of this feedback digital baseband signal and described Digital Up Convert unit output relatively, calculate the compensating factor of each carrier signal and output to compensating unit according to adaptive algorithm, output to described Digital Up Convert unit after the compensating factor that compensating unit is corresponding with it with each carrier signal multiplies each other.
2. the remote device based on the GSM standard according to claim 1, it is characterized in that: described adaptive equalization computing unit, specifically comprise: extraction unit, computing unit and processing unit, one end of described extraction unit is connected with the output of described Digital Up Convert unit and the output of described AD conversion unit respectively, and the other end is connected with the control end of described compensating unit by computing unit, processing unit;
Described extraction unit extracts the descending digital baseband signal in each road from the described digital baseband signal that closes behind the road, and extracts feedback digital baseband signal corresponding to the descending digital baseband signal in each road from the feedback digital baseband signal of described AD conversion unit output;
Described computing unit calculates the power of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu, and calculates the power gain of each road carrier signal according to the power meter of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu;
Described processing unit is so that wherein the power gain of one tunnel carrier signal or the average power of each road carrier signal gain as the benchmark gain, calculate respectively the ratio of the power gain of this benchmark gain and other each road carrier signals, this each ratio is the compensating factor of each carrier signal, and each compensating factor that will calculate outputs to described compensating unit.
3. implementation method based on the remote device of GSM standard, comprise step: each carrier signal that will input is combined into a railway digital signal, to this digital signal carry out digital-to-analogue conversion, upconversion process is radiofrequency signal, go out through antenna transmission after again this radiofrequency signal being amplified processing, it is characterized in that, also comprise step:
Signal after the described amplification that is coupled is processed is the feedback digital baseband signal with this signal down-converted, analog-to-digital conversion;
More described digital baseband signal and described feedback digital baseband signal of closing behind the road calculated the compensating factor of each carrier signal according to adaptive algorithm;
Before each carrier signal that will input was combined into a railway digital baseband signal, the compensating factor that each carrier signal is corresponding with it multiplied each other.
4. the implementation method of the remote device based on the GSM standard according to claim 3, it is characterized in that: step, more described digital baseband signal and described feedback digital baseband signal of closing behind the road calculated the compensating factor of each carrier signal according to adaptive algorithm, be specially:
From the described digital baseband signal that closes behind the road, extract the descending digital baseband signal in each road, and from described feedback digital baseband signal, extract feedback digital baseband signal corresponding to the descending digital baseband signal in each road;
Calculate the power of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu, and calculate the power gain of each road carrier signal according to the power meter of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu;
So that wherein the power gain of one tunnel carrier signal or the average power of each road carrier signal gain as the benchmark gain, calculate respectively the ratio of the power gain of this benchmark gain and other each road carrier signals, this each ratio is the compensating factor of each carrier signal.
5. adaptive equalization device based on GSM standard remote device, described remote device comprises digital circuit, downlink radio frequency circuit, power amplifier and antenna, described digital circuit comprises Digital Up Convert unit, D/A conversion unit, it is characterized in that, described adaptive equalization device comprises: coupler, feedback radio circuit, compensating unit, AD conversion unit, adaptive equalization computing unit;
The input of described compensating unit is used for receiving each carrier signal, output is connected with the input of described coupler by described Digital Up Convert unit, D/A conversion unit, downlink radio frequency circuit, power amplifier successively, an output of described coupler is connected with described antenna, another output is connected with the control end of described compensating unit by feedback radio circuit, AD conversion unit, adaptive equalization computing unit successively, and the output of described Digital Up Convert unit also is connected with the input of described adaptive equalization computing unit;
Described coupler outputs to antenna with the radiofrequency signal one tunnel of described power amplifier output, another road outputs to the feedback radio circuit, become the feedback digital baseband signal after the down-conversion of the described feedback radio circuit of described another road radiofrequency signal process, the analog-to-digital conversion of AD conversion unit and output to the adaptive equalization computing unit, described Digital Up Convert unit is combined into railway digital baseband signal output with each carrier signal of compensating unit output; Described adaptive equalization computing unit is the digital baseband signal of this feedback digital baseband signal and described Digital Up Convert unit output relatively, calculate the compensating factor of each carrier signal and output to compensating unit according to adaptive algorithm, output to described Digital Up Convert unit after the compensating factor that compensating unit is corresponding with it with each carrier signal multiplies each other.
6. the adaptive equalization device based on GSM standard remote device according to claim 5, it is characterized in that: described adaptive equalization computing unit specifically comprises: extraction unit, computing unit and processing unit, one end of described extraction unit is connected with the output of described Digital Up Convert unit and the output of described AD conversion unit respectively, and the other end is connected with the control end of described compensating unit by computing unit, processing unit;
Described extraction unit extracts the descending digital baseband signal in each road from the described digital baseband signal that closes behind the road, and extracts feedback digital baseband signal corresponding to the descending digital baseband signal in each road from the feedback digital baseband signal of described AD conversion unit output;
Described computing unit calculates the power of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu, and calculates the power gain of each road carrier signal according to the power meter of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu;
Described processing unit is so that wherein the power gain of one tunnel carrier signal or the average power of each road carrier signal gain as the benchmark gain, calculate respectively the ratio of the power gain of this benchmark gain and other each road carrier signals, this each ratio is the compensating factor of each carrier signal, and each compensating factor that will calculate outputs to described compensating unit.
7. implementation method based on the adaptive equalization device of GSM standard remote device comprises step:
The coupled power amplifier amplifies the signal after processing, and is the feedback digital baseband signal with this signal down-converted, analog-to-digital conversion;
The comparative figures circuit closes digital baseband signal and the described feedback digital baseband signal behind the road, calculates the compensating factor of each carrier signal according to adaptive algorithm;
Each carrier signal of input is outputed to described digital circuit after multiplying each other with the compensating factor that calculates is corresponding.
8. the implementation method of the adaptive equalization device based on GSM standard remote device according to claim 7, it is characterized in that: step, the comparative figures circuit closes digital baseband signal and the described feedback digital baseband signal behind the road, calculate the compensating factor of each carrier signal according to adaptive algorithm, be specially:
Extract the descending digital baseband signal in each road the digital baseband signal after described digital circuit is closed the road, and from described feedback digital baseband signal, extract feedback digital baseband signal corresponding to the descending digital baseband signal in each road;
Calculate the power of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu, and calculate the power gain of each road carrier signal according to the power meter of feedback digital baseband signal corresponding to the power of each descending digital baseband signal in road and the descending digital baseband signal of Ge Lu;
So that wherein the power gain of one tunnel carrier signal or the average power of each road carrier signal gain as the benchmark gain, calculate respectively the ratio of the power gain of this benchmark gain and other each road carrier signals, this each ratio is the compensating factor of each carrier signal.
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