CN201167390Y - Power amplifier unit of GSM base station and GSM base station - Google Patents
Power amplifier unit of GSM base station and GSM base station Download PDFInfo
- Publication number
- CN201167390Y CN201167390Y CNU200820079467XU CN200820079467U CN201167390Y CN 201167390 Y CN201167390 Y CN 201167390Y CN U200820079467X U CNU200820079467X U CN U200820079467XU CN 200820079467 U CN200820079467 U CN 200820079467U CN 201167390 Y CN201167390 Y CN 201167390Y
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- scpa
- carrier signal
- base station
- amplifying
- gsm
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
- H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0483—Transmitters with multiple parallel paths
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
Abstract
The utility model discloses a GSM base station power amplifier unit, which comprises a single-carrier power amplifier SCPA for receiving broadcast channel BCCH carrier signals of processed by a base band, executing amplification processing, and providing the amplified BCCH carrier signals to a first duplexer in a GSM base station; and a multi-carrier power amplifier MCPA for receiving traffic channel TCH carrier signals processed by a base band, executing amplification processing, and providing the amplified TCH carrier signals to a second duplexer in the GSM base station. The utility model simultaneously discloses a GSM base station. The GSM base station power amplifier unit can improve the reliability and the redundancy of the GSM base station, and facilitate setting output power of each amplified carrier signal.
Description
Technical field
The utility model relates to communication technical field, relates in particular to GSM base station power amplification unit and GSM base station.
Background technology
Generally comprise a plurality of carrier frequency plates (TRX) in the GSM base station, each carrier frequency plate is formed by baseband portion and radio frequency part, and input signal is handled by baseband portion earlier, is sent to antenna again after radio frequency part is handled and launches.General, all distributed a plurality of carrier waves in each sub-district of GSM base station or the sector, comprise carrying broadcast channel (Broadcast Control Channel, carrier wave BCCH) and a plurality of bearer service channels (Traffic Channel, carrier wave TCH).
A kind of implementation of GSM base station power amplification unit is in the prior art: in baseband portion, the signal of each carrier wave by separately carrier frequency plate independent process, promptly exists a broadcast channel carrier frequency plate and a plurality of Traffic Channel carrier frequency plate respectively.In radio frequency part, the carrier signal that the GSM base station adopts a plurality of independently single carrier power amplifiers (SCPA) to amplify each road carrier frequency plate respectively, the signal after again each being amplified closes the road, is sent to antenna and launches closing signal unification behind the road again.Be illustrated in figure 1 as the GSM base station and adopt the typical architecture of single carrier power amplifier, the signal from 4 carrier waves of baseband portion among the figure is sent to the antenna emission through closing the road by two-stage again after 4 single carrier power amplifiers amplifications respectively.
The deficiency of above-mentioned implementation is that every grade is closed the combination loss that Lu Douhui produces 3.5dB, and more for a long time, the multistage road of closing will produce higher loss, cause the waste of transmitting power and power consumption at carrier number, reduce the whole efficiency of base station; Simultaneously, the use of a plurality of SCPA and mixer also makes the volume of whole power amplifier unit; Bigger, cost is higher, is unfavorable for the heat dissipation design and the installation of product.
Deficiency at the existence of said GSM single carrier power amplifier scheme, prior art provides the implementation of another kind of GSM base station power amplification unit, as shown in Figure 2, in radio frequency part, directly the signal of a plurality of carrier waves is amplified with a broad band multicarrier power amplifier (MCPA) on each carrier frequency plate and be sent to antenna.Adopt this scheme to avoid using of mixer and close the loss that bring on the road, improved base station efficient, saved transmitting power and power consumption.Also reduce simultaneously the volume and the cost of power amplifier unit, improved the base station integrated level, under identical floor space, can support bigger base station capacity.Owing to adopted MCPA, can only to handle a carrier signal different with each carrier frequency plate in the single carrier power amplifier scheme, this moment is in baseband portion, each carrier frequency plate can be handled a plurality of carrier signals simultaneously, so the signal of broadcast channel and Traffic Channel is all handled on same carrier frequency plate carrier frequency plate, and be sent to antenna through same MCPA after amplifying and launch, this moment, each TRX finished originally the work that need be finished by a plurality of carrier frequency plates.
The inventor finds that in the implementation of single carrier power amplifier SCPA, because each carrier frequency plate is handled a carrier wave respectively, broadcast channel is carried on respectively on the different carrier frequency plates with Traffic Channel by analysis.Most important and the most basic cell broadcast information in the broadcast channels carry common sub-district is the basis of cell communication, must preferentially constantly guarantee the broadcast channel operate as normal.Therefore when the SCPA that handles the broadcast channel carrier signal breaks down, can transfer to the SCPA that handles some other Traffic Channels to broadcast channel and go up processing, be about to this Traffic Channel SCPA and be converted to broadcast channel SCPA, guarantee that preferentially broadcast channel can operate as normal.
But, in the implementation of Multi-Carrier Power Amplifier MCPA, because the carrier wave of broadcast channel and a plurality of Traffic Channels is all handled on same carrier frequency plate, and pass through same MCPA and amplify, in case MCPA breaks down, will cause the equal cisco unity malfunction of broadcast channel and Traffic Channel, comprise cell broadcast information and miscellaneous service information, cause the usefulness of whole sub-district to be searched for per family less than signal (cell broadcast information), it is in paralyzed state to communicate by letter, and has serious consequences.Therefore this scheme lacks necessary redundancy and reliability.
In addition, power output after some carrier signal is amplified needs dynamically to share each other and adjust, traffic channel carrier signal for example, the traffic channel carrier signal that telephone traffic is big should be able to dynamically take the power output after the little traffic channel carrier signal of telephone traffic amplifies; And the other carrier signal, for example the broadcast channel carrier signal is considered plot planning and covering, needs the output constant power.In the implementation of Multi-Carrier Power Amplifier MCPA, will adjust two different class carrier signals of demand to power and be put in the same multi-carrier power amplifier, then can not satisfy the dual requirements of dynamically sharing with static configuration simultaneously.
The utility model content
The utility model embodiment provides a kind of GSM base station power amplification unit, in order to improve the reliability and the redundancy of GSM base station, is convenient to be provided with the power output after each carrier signal is amplified, and this GSM base station power amplification unit comprises:
Single carrier power amplifier (SCPA) SCPA is used to receive the broadcast channel bcch carrier signal after Base-Band Processing and carries out processing and amplifying, and the bcch carrier signal after amplifying is offered first duplexer in the GSM base station;
Multi-Carrier Power Amplifier MCPA is used to receive the Traffic Channel TCH carrier signal after Base-Band Processing and carries out processing and amplifying, and the TCH carrier signal after amplifying is offered second duplexer in the GSM base station.
The utility model embodiment also provides a kind of GSM the base station, in order to improve the reliability and the redundancy of GSM base station, is convenient to be provided with the power output after each carrier signal is amplified, and this GSM base station comprises:
Carrier frequency plate TRX is used for broadcast channel bcch carrier signal and Traffic Channel TCH carrier signal are carried out Base-Band Processing and transmission;
Single carrier power amplifier (SCPA) SCPA is used to receive the bcch carrier signal after Base-Band Processing and carries out processing and amplifying, and the bcch carrier signal after amplifying is offered first duplexer;
First duplexer is used for the bcch carrier signal that receives is carried out isolation processing, and the bcch carrier signal after handling is sent to first antenna;
First antenna is used to launch the bcch carrier signal after isolation processing;
Multi-Carrier Power Amplifier MCPA is used to receive the Traffic Channel TCH carrier signal after Base-Band Processing and carries out processing and amplifying, and the TCH carrier signal after amplifying is offered second duplexer;
Second duplexer is used for the TCH carrier signal that receives is carried out isolation processing, and the TCH carrier signal after handling is sent to second antenna;
Second antenna is used to launch the TCH carrier signal after isolation processing.
Among the utility model embodiment, adopt single carrier power amplifier (SCPA) SCPA that broadcast channel bcch carrier signal is carried out processing and amplifying, adopt Multi-Carrier Power Amplifier MCPA that Traffic Channel TCH carrier signal is carried out processing and amplifying, when breaking down, MCPA do not influence the operate as normal of BCCH, can guarantee that the user can search cell signal, make the part communication traffic in the sub-district can operate as normal, can not cause the communication of whole sub-district all to be paralysed, improve the reliability and the redundancy of GSM base station; In addition, can fixedly install the power output after the bcch carrier signal amplifies, the power output after dynamically adjustment and shared each TCH carrier signal are amplified satisfies dual requirements dynamically shared and static configuration simultaneously.
Description of drawings
Fig. 1 is the structural representation that the single carrier power amplifier is adopted in the GSM base station in the background technology;
Fig. 2 is the structural representation that multi-carrier power amplifier is adopted in the GSM base station in the background technology;
Fig. 3, Fig. 4, Fig. 5 are the structural representation of GSM base station among the utility model embodiment.
Embodiment
Below in conjunction with Figure of description the utility model embodiment is elaborated.
GSM base station among the utility model embodiment comprises: carrier frequency plate TRX, GSM base station power amplification unit, first, second duplexer, first, second antenna; Wherein:
Carrier frequency plate TRX is used for broadcast channel bcch carrier signal and Traffic Channel TCH carrier signal are carried out Base-Band Processing and transmission;
GSM base station power amplification unit comprises: single carrier power amplifier (SCPA) SCPA and Multi-Carrier Power Amplifier MCPA; Wherein, SCPA is used to receive the bcch carrier signal after Base-Band Processing and carries out processing and amplifying, and the bcch carrier signal after amplifying is offered first duplexer; MCPA is used to receive the Traffic Channel TCH carrier signal after Base-Band Processing and carries out processing and amplifying, and the TCH carrier signal after amplifying is offered second duplexer;
First duplexer is used for the bcch carrier signal that receives is carried out isolation processing, and the bcch carrier signal after handling is sent to first antenna;
Second duplexer is used for the TCH carrier signal that receives is carried out isolation processing, and the TCH carrier signal after handling is sent to second antenna;
First antenna is used to launch the bcch carrier signal after isolation processing;
Second antenna is used to launch the TCH carrier signal after isolation processing; First, second antenna can be a dual polarized antenna, is made up of two antennas, and the polarised direction of two antennas is vertical, can not produce interference to guarantee two signals on the antenna.Certainly, also can be the antenna of other type, in order to emission bcch carrier signal and TCH carrier signal.
An embodiment as shown in Figure 3, wherein, GSM base station power amplification unit is made up of a SCPA and a MCPA, in the GSM base station, the carrier signal of BCCH and TCH is handled respectively, promptly respectively the carrier signal of BCCH and TCH is amplified, again the signal after amplifying independently is sent to two antennas respectively through two duplexers and launches with SCPA and MCPA.Wherein, SCPA adopts arrowband small-power power tube, be used for the carrier signal of broadcast channel is carried out processing and amplifying, and the signal after will handling is sent in the antenna one through a duplexer; MCPA adopts the high-power power tube in broadband, be used for the carrier signal of all Traffic Channels is carried out processing and amplifying, and the signal after will handling is sent to another root in the antenna through another duplexer, like this, avoided the signal that comes out from two power amplifiers is closed the combination loss that the road is handled and brought thus, guaranteed to adopt GSM base station characteristic and the advantage of MCPA.In addition, because the volume of power amplifier, weight, cost are mainly by MCPA and the decision of corresponding auxiliary circuit thereof, therefore, though it is very little to volume, weight and the cost impact of whole power amplifier to introduce SCPA, can bring good standby redundancy effect.
In the present embodiment, if MCPA breaks down, all equal cisco unity malfunctions of TCH carrier signal, but can not have influence on the bcch carrier signal, this moment the equal operate as normal of various broadcast messages in the sub-district, the processing that terminal use in the sub-district can be correlated with according to the broadcast message that the base station receives, and, can guarantee also that by BCCH the part communication service in the sub-district normally carries out.
If SCPA breaks down, the bcch carrier signal can be replaced a certain road TCH carrier signal, switch to the processing and amplifying of the enterprising line correlation of MCPA, but this moment the sub-district the equal operate as normal of broadcast message, business information, can the communication in the sub-district not exerted an influence.It is readily appreciated by a person skilled in the art that whether MCPA and SCPA break down, can also can be detected by manually judging by network index by the control mode of software or hardware; Detect and handle and to finish by GSM inside of base station equipment, also can finish by the GSM peripheral device of base station.
In addition, SCPA can comprise module is set, and is used for fixing the power output that the bcch carrier signal is set; MCPA can comprise adjusting module, is used for dynamically adjusting according to telephone traffic the power output of each TCH carrier signal, makes the power output of MCPA be shared by each TCH carrier signal.Can guarantee on the one hand the power output of BCCH, also can make the power output of each TCH carrier signal can share the power output of MCPA mutually on the other hand.
For higher redundancy and reliability is provided, GSM base station power amplification unit also can adopt a plurality of SCPA and a MCPA to realize, an embodiment as shown in Figure 4, GSM base station power amplification unit comprises a plurality of SCPA, MCPA, selector switch 1,2; Wherein: SCPA-1～N, single carrier power amplifier (SCPA), each SCPA can amplify one tunnel carrier signal; MCPA, Multi-Carrier Power Amplifier can amplify the multichannel carrier signal simultaneously; Each SCPA all adopts constant power, and MCPA adopts and dynamically shares power.Selector switch 1 is used for selecting a SCPA who does not break down that the bcch carrier signal is carried out processing and amplifying from a plurality of SCPA; Selector switch 2, the bcch carrier signal after a SCPA who does not break down who is used to control described selection will amplify exports corresponding duplexer to.
Among Fig. 4, the bcch carrier signal is selected to transmit through selector switch 1, during operate as normal, BCCH is imported SCPA-1 carry out processing and amplifying (also can be among other SCPA), other SCPA does not work, and the bcch carrier signal after the amplification is sent to antenna through selector switch 2 through corresponding duplexer again; When SCPA-1 breaks down, available some other SCPA replace SCPA-1 work, and the bcch carrier signal is switched to corresponding SCPA by selector switch 1 get on, also the signal after amplifying through this SCPA is sent to antenna by selector switch 2 through corresponding duplexer simultaneously.In the enforcement, first selector switch can comprise the processed module, is used for according to priority selecting a SCPA who does not break down that the bcch carrier signal is carried out processing and amplifying from a plurality of SCPA.
Another embodiment as shown in Figure 5, selector switch 1 be used for will input the bcch carrier signal be mapped to two different power amplifiers with the TCH carrier signal and go (comprising SCPA and MCPA); Selector switch 2 with selector switch 1 supporting use, adopts identical mapping mechanism, selects to be sent to the antenna emission from the two paths of signals of a plurality of power amplifiers through corresponding duplexer.Selector switch 1 can comprise the selection module, is used for when MCPA breaks down, and selects a free time and the SCPA that do not break down carries out processing and amplifying to one road TCH carrier signal from a plurality of SCPA; Selector switch 2 can comprise control module, is used to control a free time of described selection and the SCPA that the do not break down TCH carrier signal after will amplifying exports second duplexer to.For example, when MCPA breaks down, the bcch carrier signal is by the SCPA-1 operate as normal, can deliver to one road TCH carrier signal wherein on any one SCPA except that SCPA-1 by selector switch 1 and handle this moment, and be sent to through the corresponding duplexer antenna by selector switch 2, can guarantee that like this broadcast channel carrier wave and a traffic channel carrier are normal, keep part communication and traffic in the sub-district; When SCPA-1 and MCPA all break down, its input signal can be switched to other SCPA respectively and go up and handle, but require the preferential carrier signal of broadcast channel that guarantees to obtain normal handling.Certainly, select module also can comprise the processed unit in the enforcement, be used for according to priority selecting free time and the SCPA that do not break down carries out processing and amplifying to one road TCH carrier signal from a plurality of SCPA.
Among the utility model embodiment, adopt single carrier power amplifier (SCPA) SCPA that broadcast channel bcch carrier signal is carried out processing and amplifying, adopt Multi-Carrier Power Amplifier MCPA that Traffic Channel TCH carrier signal is carried out processing and amplifying, when breaking down, MCPA do not influence the operate as normal of BCCH, can guarantee that the user can search cell signal, make the part communication traffic in the sub-district can operate as normal, can not cause the communication of whole sub-district all to be paralysed, improve the reliability and the redundancy of GSM base station, avoided the use of mixer and the combination loss of bringing simultaneously; In addition, can fixedly install the power output after the bcch carrier signal amplifies, the power output after dynamically adjustment and shared each TCH carrier signal are amplified satisfies dual requirements dynamically shared and static configuration simultaneously.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (13)
1, a kind of GSM base station power amplification unit is characterized in that, comprising:
Single carrier power amplifier (SCPA) SCPA is used to receive the broadcast channel bcch carrier signal after Base-Band Processing and carries out processing and amplifying, and the bcch carrier signal after amplifying is offered first duplexer in the GSM base station;
Multi-Carrier Power Amplifier MCPA is used to receive the Traffic Channel TCH carrier signal after Base-Band Processing and carries out processing and amplifying, and the TCH carrier signal after amplifying is offered second duplexer in the GSM base station.
2, GSM base station power amplification as claimed in claim 1 unit is characterized in that described SCPA is a plurality of; Described GSM base station power amplification unit also comprises:
First selector switch is used for selecting a SCPA who does not break down that the bcch carrier signal is carried out processing and amplifying from described a plurality of SCPA;
Second selector switch, the bcch carrier signal after a SCPA who does not break down who is used to control described selection will amplify exports first duplexer to.
3, GSM base station power amplification as claimed in claim 2 unit is characterized in that described first selector switch comprises: the processed module, be used for according to priority, and from described a plurality of SCPA, select a SCPA who does not break down.
4, GSM base station power amplification as claimed in claim 2 unit, it is characterized in that, described first selector switch comprises: select module, be used for when MCPA breaks down, select a free time and the SCPA that do not break down carries out processing and amplifying to one road TCH carrier signal from described a plurality of SCPA;
Described second selector switch comprises: control module is used to control a free time of described selection and the SCPA that the do not break down TCH carrier signal after will amplifying exports second duplexer to.
5, GSM base station power amplification as claimed in claim 4 unit is characterized in that described selection module comprises: the processed unit is used for according to priority the SCPA that selects a free time and do not break down from described a plurality of SCPA.
6, as each described GSM base station power amplification unit of claim 1 to 5, it is characterized in that described SCPA comprises: module is set, is used for fixing the power output that is provided with after the bcch carrier signal amplifies;
Described MCPA comprises: adjusting module is used for adjusting power output after each TCH carrier signal is amplified according to telephone traffic.
7, a kind of GSM base station is characterized in that, comprising:
Carrier frequency plate TRX is used for broadcast channel bcch carrier signal and Traffic Channel TCH carrier signal are carried out Base-Band Processing and transmission;
Single carrier power amplifier (SCPA) SCPA is used to receive the bcch carrier signal after Base-Band Processing and carries out processing and amplifying, and the bcch carrier signal after amplifying is offered first duplexer;
First duplexer is used for the bcch carrier signal that receives is carried out isolation processing, and the bcch carrier signal after handling is sent to first antenna;
First antenna is used to launch the bcch carrier signal after isolation processing;
Multi-Carrier Power Amplifier MCPA is used to receive the Traffic Channel TCH carrier signal after Base-Band Processing and carries out processing and amplifying, and the TCH carrier signal after amplifying is offered second duplexer;
Second duplexer is used for the TCH carrier signal that receives is carried out isolation processing, and the TCH carrier signal after handling is sent to second antenna;
Second antenna is used to launch the TCH carrier signal after isolation processing.
8, GSM as claimed in claim 7 base station is characterized in that described SCPA is a plurality of; Described GSM base station also comprises:
First selector switch is used for selecting a SCPA who does not break down that the bcch carrier signal is carried out processing and amplifying from described a plurality of SCPA;
Second selector switch, the bcch carrier signal after a SCPA who does not break down who is used to control described selection will amplify exports first duplexer to.
9, GSM as claimed in claim 8 base station is characterized in that described first selector switch comprises: the processed module, be used for according to priority, and from described a plurality of SCPA, select a SCPA who does not break down.
10, GSM as claimed in claim 8 base station, it is characterized in that, described first selector switch comprises: select module, be used for when MCPA breaks down, select a free time and the SCPA that do not break down carries out processing and amplifying to one road TCH carrier signal from described a plurality of SCPA;
Described second selector switch comprises: control module is used to control a free time of described selection and the SCPA that the do not break down TCH carrier signal after will amplifying exports second duplexer to.
11, GSM as claimed in claim 10 base station is characterized in that described selection module comprises: the processed unit is used for according to priority the SCPA that selects a free time and do not break down from described a plurality of SCPA.
12, GSM as claimed in claim 7 base station is characterized in that described first, second antenna is a dual polarized antenna.
13, as each described GSM base station of claim 7 to 12, it is characterized in that described SCPA comprises: module is set, is used for fixing the power output that the bcch carrier signal is set;
Described MCPA comprises: adjusting module is used for adjusting according to telephone traffic the power output of each TCH carrier signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820079467XU CN201167390Y (en) | 2008-03-18 | 2008-03-18 | Power amplifier unit of GSM base station and GSM base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820079467XU CN201167390Y (en) | 2008-03-18 | 2008-03-18 | Power amplifier unit of GSM base station and GSM base station |
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| Publication Number | Publication Date |
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| CN201167390Y true CN201167390Y (en) | 2008-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU200820079467XU Expired - Lifetime CN201167390Y (en) | 2008-03-18 | 2008-03-18 | Power amplifier unit of GSM base station and GSM base station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2785117A1 (en) * | 2011-12-13 | 2014-10-01 | Huawei Technologies Co., Ltd | Downlink signal processing device and processing method thereof |
| CN112787606A (en) * | 2020-12-30 | 2021-05-11 | 西安建筑科技大学 | Signal reading circuit |
-
2008
- 2008-03-18 CN CNU200820079467XU patent/CN201167390Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2785117A1 (en) * | 2011-12-13 | 2014-10-01 | Huawei Technologies Co., Ltd | Downlink signal processing device and processing method thereof |
| EP2785117A4 (en) * | 2011-12-13 | 2015-01-28 | Huawei Tech Co Ltd | Downlink signal processing device and processing method thereof |
| US9609589B2 (en) | 2011-12-13 | 2017-03-28 | Huawei Technologies Co., Ltd. | Apparatus and method for processing downlink signal |
| CN112787606A (en) * | 2020-12-30 | 2021-05-11 | 西安建筑科技大学 | Signal reading circuit |
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Granted publication date: 20081217 |