CN103582106B - Signal processing method and device based on dual-carrier frequency-hopping technology and tower mounted amplifier based on dual-carrier frequency-hopping technology - Google Patents
Signal processing method and device based on dual-carrier frequency-hopping technology and tower mounted amplifier based on dual-carrier frequency-hopping technology Download PDFInfo
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- CN103582106B CN103582106B CN201210255590.3A CN201210255590A CN103582106B CN 103582106 B CN103582106 B CN 103582106B CN 201210255590 A CN201210255590 A CN 201210255590A CN 103582106 B CN103582106 B CN 103582106B
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Abstract
The invention provides a signal processing method and device based on the dual-carrier frequency-hopping technology and a tower mounted amplifier based on the dual-carrier frequency-hopping technology. The signal processing method includes the following steps: carrying out digital signal processing on input dual-carrier signals, then carrying out statistics on frequency information of the dual-carrier signals, affirming the signal with the frequency firstly reaching a preset statistic time number as a signal of a BCCH channel, affirming the signals with other frequencies as signals of a TCH channel, separating the signal of the BCCH channel from the signals of the TCH channel, and respectively carrying out power amplification processing on the separated signal of the BCCH channel and the separated signals of the TCH channel. The signal processing method and device based on the dual-carrier frequency-hopping technology and the tower mounted amplifier based on the dual-carrier frequency-hopping technology have the advantages of being high in efficiency and linearity and low in cost, and have the good application prospects.
Description
Technical field
The present invention relates to mobile communication system, more particularly, to a kind of signal processing method based on dual carrier frequency hopping,
A kind of signal processing apparatus ability based on dual carrier frequency hopping and a kind of tower amplifier based on dual carrier frequency hopping.
Background technology
In recent years, with the development of mobile communication, cellphone subscriber gets more and more, and frequency resource is also more and more nervous.For
More rationally efficiently utilize frequency resource, frequency hopping is suggested, and frequency hopping includes baseband hopping and RF hopping, and with regard to radio frequency
For frequency hopping, the ancillary equipment of base station includes TMA（Tower Mounted Amplifier, unidirectional tower amplifier), TMB
（Tower Mounted Booster, bidirectional tower amplifier), repeater etc..If RF hopping to be supported, at present in the industry
Scheme only adopts the tower amplifier in broadband.
Tower amplifier is mounted in top of tower and abuts against a low-noise amplifier after reception antenna, and it can be
Receipt signal is amplified nearly 12dB before entering antenna by receipt signal, improves uplink signal quality, improve call can
By property and speech quality and expansion MPS process area etc..Current application is usually by tower amplifier and power amplifier
（Referred to as " power amplifier "）Combination forms shrouding extension system, that is, pass through duplexer by downlink power amplifier and up low noise amplification
Device integrates, and is traditional single carrier bidirectional tower amplifier as shown in Figure 1.
Traditional single carrier bidirectional tower amplifier, if applicable broadband power amplifier, can support the RF hopping of single carrier,
But it can only support single-input single-output pattern, then helpless for dual carrier frequency hopping base station.Tower for dual carrier frequency hopping base station
Put equipment, multi-carrier broadband power amplifier can only be applied in the industry at present, because the frequency jitter of dual carrier is very fast, only hundreds of micro-
Second, the HPA of the high rollback of power so linearization technique cannot be applied, can only be adopted（High Power Amplifier, high power
Amplifier）.But the efficiency of HPA is very low, cost is also very high, thus leading to the efficiency of multi-carrier broadband tower amplifier and becoming
This is also unsatisfactory.
Content of the invention
High power amplifier can only be applied based on this to be led to it is necessary to the tower being directed to above-mentioned dual carrier frequency hopping puts equipment
Efficiency is low, the problem of high cost, provides a kind of signal processing method based on dual carrier frequency hopping, device and tower top to amplify
Device.
For achieving the above object, the present invention adopts the following technical scheme that：
A kind of signal processing method based on dual carrier frequency hopping, comprises the following steps：
Digital Signal Processing is carried out to the dual carrier signal of input, then counts the frequency information of described dual carrier signal,
The signal of first frequency reaching default statistics number is regarded as the signal of BCCH channel, the signal of other frequencies is regarded as
The signal of TCH channel；
Separate the signal of described BCCH channel and the signal of described TCH channel；
The signal of the signal to the BCCH channel after described separation and TCH channel carries out power amplification process respectively.
A kind of signal processing apparatus based on dual carrier frequency modulation technology, including digital processing element and respectively with this numeral
The first power amplifier that processing unit is connected, the second power amplifier；
Described digital processing element is used for carrying out Digital Signal Processing to the dual carrier signal of input, then counts described double
The frequency information of carrier signal, the signal of first frequency reaching default statistics number is regarded as the signal of BCCH channel,
The signal of other frequencies regards as the signal of TCH channel, and separates the signal of described BCCH channel and the letter of described TCH channel
Number；
Described first power amplifier is used for carrying out power amplification process to the signal of the BCCH channel after described separation；
Described second power amplifier is used for carrying out power amplification process to the signal of the TCH channel after described separation.
The signal processing method based on dual carrier frequency hopping of the present invention, device, using digital frequency hopping, separable
Base station radio-frequency Frequency Hopping Signal, BCCH channel is extracted with the Signal separator in TCH channel, two after so separating
Signal just can individually enter in single carrier power amplifier and carry out power amplification.Due to being not required to using after the method for the present invention and device
The high power amplifier of multicarrier to be used but use single carrier power amplifier, therefore its efficiency and the more traditional multicarrier width of cost
Band tower is put equipment tool and is had great advantage, and has the characteristics that high efficiency, High Linear, low cost.
In addition the present invention also provides a kind of tower amplifier based on dual carrier frequency hopping, including：Input duplexer, the
One low-noise amplifier, the second low-noise amplifier, digital processing element, the first power amplifier, the second power amplifier,
One output duplexer, the second output duplexer；Described input duplexer, the second low-noise amplifier respectively with base transceiver station phase
Connect；Described first low-noise amplifier, digital processing element are connected with described input duplexer respectively；Described first low noise
Acoustic amplifier, the first power amplifier are connected with the described first output duplexer respectively；Described first power amplifier, second
Power amplifier is connected with described digital processing element respectively；Described second power amplifier, the second low-noise amplifier divide
It is not connected with the described second output duplexer；Described first output duplexer, the second output equal external antenna of duplexer.
The tower amplifier based on dual carrier frequency hopping of the present invention, dual carrier signal enters numeral from input duplexer
After processing unit, BCCH channel is extracted with the Signal separator in TCH channel by Applied Digital frequency hopping by digital processing element
Out, two signals after so separating can respectively enter in two different single carrier power amplifiers and carry out signal processing and amplifying.
Because the tower amplifier of the present invention does not need high power amplifier using multicarrier but uses single carrier power amplifier, therefore its
Efficiency and cost are put equipment tool compared with multi-carrier broadband tower and are had great advantage, and have the characteristics that high efficiency, High Linear, low cost.Separately
The tower amplifier of the outer present invention is undistorted to dual carrier frequency hopping base station signal energy, not time delay is amplified, and is effectively lifted
Base Station Compatibility and coverage, have a good market prospect.
Brief description
Fig. 1 is the structural representation of traditional single carrier bidirectional tower amplifier；
Fig. 2 is a kind of schematic flow sheet of the signal processing method based on dual carrier frequency hopping of the present invention；
Fig. 3 is a kind of structural representation of the signal processing apparatus based on dual carrier frequency hopping of the present invention；
Fig. 4 is a kind of structural representation of the tower amplifier based on dual carrier frequency hopping of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, technical scheme is further described.
Embodiment one
Shown in Figure 2, a kind of signal processing method based on dual carrier frequency hopping, comprise the following steps：
Step S101 is it is well known that for dual carrier frequency hopping base station, its signal must have a carrier frequency do not jumped, that is,
BCCH（Broadcast Control Channel, BCCH）, another one is then the TCH of the continuous saltus step of frequency
（Traffic Channel, Traffic Channel）.For this mode, the present invention carries out numeral to the dual carrier signal of input first
Signal processing, then counts the frequency information of described dual carrier signal, by the letter of first frequency reaching default statistics number
Number regard as the signal of BCCH channel, the signal of other frequencies regards as the signal of TCH channel, subsequently into step S102.
As a preferable embodiment, the process that the above-mentioned dual carrier signal to input carries out Digital Signal Processing is concrete
Can include：Frequency-conversion processing, AD are carried out successively to the dual carrier signal of input（Analog to Digital, analog digital conversion）Adopt
Sample is processed and FPGA（Field-Programmable Gate Array, field programmable gate array）Process etc..
Step S102, separates the signal of described BCCH channel and the signal of described TCH channel, subsequently into step S103.
As a preferable embodiment, the described signal separating BCCH channel specifically can include with the process of the signal of TCH channel：
Step S1021, by the digital filtering of the signal input arrowband of described first frequency reaching default statistics number
Device, extracts the signal of described BCCH channel；
Step S1022, the whole path of signal of remaining other all frequencies is processed, obtains the letter of described TCH channel
Number.
Step S103, the signal to the BCCH channel after described separation and the signal of TCH channel carry out power respectively and put
Big process.Because step S102 has carried out separating treatment to signal, two signals therefore here just can enter respectively
Enter in two different single carrier power amplifiers and be amplified, without the high power amplifier reusing traditional multicarrier,
This also just effectively prevent, and the efficiency brought using high power amplifier is low, high cost problem.
As a preferable embodiment, in described step S101, Digital Signal Processing is carried out to the dual carrier signal of input
Before, step S100 can also be included：Up-downgoing separating treatment is carried out to the dual carrier signal of input.
As a preferable embodiment, in described step S103, power amplification process is carried out respectively to the signal after separation
Afterwards, step S104 can also be included：Again up-downgoing separating treatment is carried out respectively to the signal through power amplification process number,
Then by antenna, the signal after up-downgoing separates is transmitted respectively.
It should be noted that this processing mode of the present invention can also be used for other base station ancillary equipment such as bases and putting, directly putting
Stand.
Corresponding with a kind of above-mentioned signal processing method based on dual carrier frequency hopping, the present invention also provides a kind of base
In the signal processing apparatus of dual carrier frequency hopping, shown in Figure 3, this device include digital processing element 15 and respectively with
The first power amplifier 18 that this digital processing element is connected, the second power amplifier 19；
15 yuan of described digital processing list is used for carrying out Digital Signal Processing to the dual carrier signal of input, then counts described
The frequency information of dual carrier signal, the signal of first frequency reaching default statistics number is regarded as the letter of BCCH channel
Number, the signal of other frequencies regards as the signal of TCH channel, and separates the signal of described BCCH channel and described TCH channel
Signal；
Described first power amplifier 18 is used for carrying out power amplification process to the signal of the BCCH channel after described separation；
Described second power amplifier 19 is used for carrying out power amplification process to the signal of the TCH channel after described separation.
As a preferable embodiment, described digital processing element 15 can include signal separation module, for by institute
State the digital filter of the signal input arrowband of first frequency reaching default statistics number, extract described BCCH channel
Signal；And the whole path of signal of described other frequency is processed, obtain the signal of described TCH channel.
A kind of other technical characteristics of signal processing apparatus based on dual carrier frequency hopping of the present invention and above-mentioned one kind
Signal processing method based on dual carrier frequency hopping is identical, and it will not go into details herein.
By above scheme as can be seen that the signal processing method based on dual carrier frequency hopping of the present invention, device, answer
Use digital frequency hopping, separable base station radio-frequency Frequency Hopping Signal, BCCH channel is extracted with the Signal separator in TCH channel
Come, two signals after so separating just can individually enter in single carrier power amplifier and carry out power amplification.Due to adopting
Do not need the high power amplifier using multicarrier after the method for the present invention and device but use single carrier power amplifier, therefore its effect
Rate and the more traditional multi-carrier broadband tower of cost are put equipment tool and are had great advantage, and have high efficiency, High Linear, the spy of low cost
Point.
Embodiment two
The present invention also provides a kind of tower amplifier based on dual carrier frequency hopping, shown in Figure 4, including：Input
Duplexer 11, the first low-noise amplifier 13, the second low-noise amplifier 22, digital processing element 15, the first power amplifier
18th, the second power amplifier 19, first exports duplexer 14, second output duplexer 20；Described input duplexer 11, second is low
Noise amplifier 22 is connected with base transceiver station 10 respectively；Described first low-noise amplifier 13,15 points of digital processing element
It is not connected with described input duplexer 11；Described first low-noise amplifier 13, the first power amplifier 18 respectively with described
First output duplexer 14 is connected；Described first power amplifier 18, the second power amplifier 19 respectively with described numeral at
Reason unit 15 is connected；Described second power amplifier 19, the second low-noise amplifier 22 are duplexing with the described second output respectively
Device 20 is connected；Described first output duplexer 14, the second output equal external antenna of duplexer 20（14 connect 23,20 connects 24）.
Each english abbreviation in Fig. 4 is explained as follows：
LNA：Low Noise Amplifier, low-noise amplifier；
PA：Power Amplifier, power amplifier；
BTS：Base Transceiver Station, base transceiver station.
Below, the description present invention is jumped based on dual carrier taking the signals transmission between base transceiver station to antenna as a example
The work process of the tower amplifier of frequency technology：
First, base station dual carrier（Constant channel BCCH+ frequency hopping channel TCH）Signal enters input duplexer；
2nd, dual carrier signal enters digital processing element after inputting duplexer to carry out up-downgoing separating treatment；
3rd, digital processing element carry out frequency conversion, AD sampling, FPGA etc. process after, separate described BCCH channel signal with
The signal of described TCH channel.This detached process can include as follows：Statistic frequency information, first is reached statistics number
The signal of frequency regard as the signal of BCCH channel, the numeral filter of the signal input arrowband of the BCCH frequency then this assert
Ripple device, extracts the signal of described BCCH channel；In addition the whole path of signal of remaining other all frequencies is processed, obtain
The signal of described TCH channel；
4th, the signal of described BCCH channel enters the first power amplifier（PA1）, the signal of described TCH channel enters the
Two power amplifiers（PA2）；
5th, described first power amplifier（PA1）With the second power amplifier（PA2）It is single carrier power amplifier, each will
The signal of input is amplified processing；
6th, described first power amplifier（PA1）Signal after middle amplification enters the first output duplexer, described second work(
Rate amplifier（PA2）Signal after middle amplification enters the second output duplexer；
7th, the first output duplexer, the second output duplexer carry out up-downgoing separating treatment to the signal of input, so respectively
Afterwards by being transmitted signal respectively with the antenna being each connected.
As a preferable embodiment, the tower amplifier of the present invention can also include the first adjustable attenuator 12, institute
State the first adjustable attenuator 12 to be connected between described input duplexer 11 and described first low-noise amplifier 13, for letter
Number carry out attenuation processing.
As a preferable embodiment, the tower amplifier of the present invention can also include the second adjustable attenuator 16, institute
State the second adjustable attenuator 16 to be connected between described digital processing element 15 and described first power amplifier 18, for letter
Number carry out attenuation processing.
As a preferable embodiment, the tower amplifier of the present invention can also include the 3rd adjustable attenuator 17, institute
State the 3rd adjustable attenuator 17 to be connected between described digital processing element 15 and described second power amplifier 19, for letter
Number carry out attenuation processing.
As a preferable embodiment, the tower amplifier of the present invention can also include fixed attenuator 21, described solid
Determine attenuator 21 to be connected between described base transceiver station 10 and described second low-noise amplifier 22, for declining to signal
Subtract process.
It should be noted that for part and the structure known to some other of tower amplifier, the present invention does not repeat.
By above scheme as can be seen that the tower amplifier based on dual carrier frequency hopping of the present invention, dual carrier is believed
Number from input duplexer enter digital processing element after, Applied Digital frequency hopping, by digital processing element by BCCH channel with
Signal separator in TCH channel extracts, and two signals after so separating can respectively enter two different single carriers
Carry out signal processing and amplifying in power amplifier.High power amplifier using multicarrier is not needed due to the tower amplifier of the present invention and
Be with single carrier power amplifier, therefore its efficiency and cost compared with multi-carrier broadband tower put equipment tool have great advantage, have high efficiency,
High Linear, the feature of low cost.In addition the tower amplifier of the present invention can undistorted, not time delay to dual carrier frequency hopping base station signal
Be amplified, effectively improve Base Station Compatibility and coverage, there is good market prospect.
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (8)
1. a kind of signal processing method based on dual carrier frequency hopping is it is characterised in that comprise the following steps：
Digital Signal Processing is carried out to the dual carrier signal of input, then counts the frequency information of described dual carrier signal, by the
The signal of one frequency reaching default statistics number regards as the signal of BCCH channel, and the signal of other frequencies regards as TCH
The signal of channel；
Separate the signal of described BCCH channel and the signal of described TCH channel；
The signal of the signal to the BCCH channel after described separation and TCH channel carries out power amplification process respectively；
The described signal separating BCCH channel is specifically included with the process of the signal of TCH channel：
By the digital filter of the signal input arrowband of described first frequency reaching default statistics number, extract described
The signal of BCCH channel；
The whole path of signal of described other frequency is processed, obtains the signal of described TCH channel.
2. the signal processing method based on dual carrier frequency hopping according to claim 1 it is characterised in that described to defeated
The process that the dual carrier signal entering carries out Digital Signal Processing specifically includes：The dual carrier signal of input is carried out at frequency conversion successively
Reason, AD sampling processing and FPGA process.
3. the signal processing method based on dual carrier frequency hopping according to claim 1 and 2 is it is characterised in that in institute
State before Digital Signal Processing is carried out to the dual carrier signal inputting, also include step：On the dual carrier signal inputting is carried out
Descending separating treatment.
4. the signal processing method based on dual carrier frequency hopping according to claim 3 is it is characterised in that described right
After signal after separating carries out power amplification process respectively, also include step：Signal through power amplification process number is divided
Do not carry out up-downgoing separating treatment again, then by antenna, the signal after up-downgoing separates is transmitted.
5. a kind of signal processing apparatus based on dual carrier frequency hopping are it is characterised in that including digital processing element and dividing
The first power amplifier of not being connected with this digital processing element, the second power amplifier；
Described digital processing element is used for carrying out Digital Signal Processing to the dual carrier signal of input, then counts described dual carrier
The frequency information of signal, the signal of first frequency reaching default statistics number is regarded as the signal of BCCH channel, other
The signal of frequency regards as the signal of TCH channel, and separates the signal of described BCCH channel and the signal of described TCH channel；
Described first power amplifier is used for carrying out power amplification process to the signal of the BCCH channel after described separation；
Described second power amplifier is used for carrying out power amplification process to the signal of the TCH channel after described separation；
Described digital processing element includes signal separation module, for by described first frequency reaching default statistics number
The digital filter of signal input arrowband, extracts the signal of described BCCH channel；And will be complete for the signal of described other frequency
Portion's path is processed, and obtains the signal of described TCH channel.
6. a kind of tower amplifier based on dual carrier frequency hopping is it is characterised in that include：Input duplexer, the first low noise
Acoustic amplifier, the second low-noise amplifier, digital processing element, the first power amplifier, the second power amplifier, the first output
Duplexer, the second output duplexer；Described input duplexer, the second low-noise amplifier are connected with base transceiver station respectively；
Described first low-noise amplifier, digital processing element are connected with described input duplexer respectively；Described first low noise is put
Big device, the first power amplifier are connected with the described first output duplexer respectively；Described first power amplifier, the second power
Amplifier is connected with described digital processing element respectively；Described second power amplifier, the second low-noise amplifier respectively with
Described second output duplexer is connected；Described first output duplexer, the second output equal external antenna of duplexer；
Wherein, described input duplexer carries out to dual carrier signal being transferred to described digital processing list after up-downgoing separating treatment
Unit；
Described digital processing element carries out Digital Signal Processing to the described dual carrier signal of input, then counts described dual carrier
The frequency information of signal, the signal of first frequency reaching default statistics number is regarded as the signal of BCCH channel, other
The signal of frequency regards as the signal of TCH channel, and separates the signal of described BCCH channel and the signal of described TCH channel；
The signal of described BCCH channel enters described first power amplifier, and the signal of described TCH channel enters described second work(
Rate amplifier.
7. the tower amplifier based on dual carrier frequency hopping according to claim 6 it is characterised in that：
Also include the first adjustable attenuator, described first adjustable attenuator is connected to described input duplexer and described first low noise
Between acoustic amplifier；
And/or
Also include the second adjustable attenuator, described second adjustable attenuator is connected to described digital processing element and described first work(
Between rate amplifier.
8. the tower amplifier based on dual carrier frequency hopping according to claim 6 it is characterised in that：
Also include the 3rd adjustable attenuator, described 3rd adjustable attenuator is connected to described digital processing element and described second work(
Between rate amplifier；
And/or
Also include fixed attenuator, described fixed attenuator is connected to described base transceiver station and described second low-noise amplifier
Between.
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| CN201210255590.3A CN103582106B (en) | 2012-07-23 | 2012-07-23 | Signal processing method and device based on dual-carrier frequency-hopping technology and tower mounted amplifier based on dual-carrier frequency-hopping technology |
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| CN201210255590.3A CN103582106B (en) | 2012-07-23 | 2012-07-23 | Signal processing method and device based on dual-carrier frequency-hopping technology and tower mounted amplifier based on dual-carrier frequency-hopping technology |
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| CN103582106B true CN103582106B (en) | 2017-02-08 |
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| WO2003107702A1 (en) * | 2002-06-14 | 2003-12-24 | Siemens Aktiengesellschaft | Method for allocating channels during the transmission of useful data between an emitting radio station and a receiving radio station via a radio interface |
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Address after: 510663 Shenzhou Road 10, Science City, Guangdong, Guangzhou Patentee after: Jingxin Network System Co.,Ltd. Address before: 510663 Shenzhou Road 10, Science City, Guangdong, Guangzhou Patentee before: Comba Telecom System (China) Ltd. |