CN201742417U - Multi-mode digital optical fiber repeater as well as near-end machine, far-end machine and coverage system thereof - Google Patents
Multi-mode digital optical fiber repeater as well as near-end machine, far-end machine and coverage system thereof Download PDFInfo
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- CN201742417U CN201742417U CN2010202518559U CN201020251855U CN201742417U CN 201742417 U CN201742417 U CN 201742417U CN 2010202518559 U CN2010202518559 U CN 2010202518559U CN 201020251855 U CN201020251855 U CN 201020251855U CN 201742417 U CN201742417 U CN 201742417U
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Abstract
A multi-mode digital optical fiber repeater is used for the optimization of a GSM network and TD-SCDMA network. The multi-mode digital optical fiber repeater comprises a near-end machine and a far-end machine that are connected by optical fiber, wherein the near-end machine comprises a first duplexer, a first optical interface module, a second optical interface module, a first signal processing module and a first control management module; and the far-end machine comprises a third optical interface module, a GSM-mode second duplexer, a TD-SCDMA mode third filter, a second signal processing module and a second control management module. The repeater realizes the integrated coverage of the GSM network and the TD-SCDMA network, so as to reduce the cost, save the resources, facilitate the networking and be convenient for realizing the remote coverage within the wide range.
Description
[technical field]
The utility model belongs to electronic information and mobile communication technology field, relates to the multi-modulation scheme digital optical fiber direct station of a kind of GSM of the being used for network and the TD-SCDMA network optimization, and the network optimization covers scheme.
[background technology]
It will be the main problem of considering in each the big 3G of operator, 4G and the future communications networking that the inevitable long-term co-existence of 2G/3G/4G mobile communication system, the common location of the network optimization equipment of multi-modulation scheme cover.For example, the GSM standard is taked two kinds of different indoor covering schemes fully with the TD-SCDMA standard, will cause the waste of site resource, and whole mobile communication system resource utilization is low.The tradition repeater can't realize that in the TD-SCDMA system the whole network is synchronous, can influence communication quality, therefore China Mobile adopts the networking plan of BBU+RRU (being indoor baseband processing unit+remote radio unit (RRU)) substantially in the TD-SCDMA network optimization is built, and the GSM network optimization system is based on the repeater.Like this in the TD-SCDMA standard, and in the size expansion of later TD-LTE standard network, provide the solution of multi-modulation scheme system access platform to become the industry problem demanding prompt solution.
[summary of the invention]
The purpose of this utility model provides a kind of multi-modulation scheme digital optical fiber direct station, so that GSM network and TD-SCDMA network can integratedly cover, reducing cost, economize on resources, to make things convenient for networking and maintenance, and can realize the covering of long-distance large-range easily.
For realizing above purpose, technical solution adopted in the utility model is:
A kind of multi-modulation scheme digital optical fiber direct station is used for the optimization of GSM network and TD-SCDMA network, and it comprises near-end machine and the remote termination that connects by optical fiber, wherein,
Described near-end machine comprises:
First duplexer of GSM standard;
The first optical interface module is used for baseband processing unit in the junction chamber;
The second optical interface module is used to connect remote termination and/or repeater and/or remote radio unit (RRU) and/or another near-end machine;
First signal processing module, be connected with first duplexer with described two optical interface modules, this first signal processing module finally is converted to serial digital signal output after being used for descending GSM radiofrequency signal handled, will finally be converted to the output of GSM radiofrequency signal after the up GSM Digital Signal Processing and up-downgoing TD-SCDMA digital signal is handled;
First control management module is connected with first signal processing module with described two optical interface modules, and they are monitored in real time;
Described remote termination comprises:
The 3rd optical interface module;
Second duplexer of GSM standard and the 3rd filter of TD-SCDMA standard;
The secondary signal processing module is connected with described the 3rd optical interface module, and is connected second duplexer and the 3rd filter with receive path to retransmitting antenna by transmission channel;
Second control management module is connected with receive path with described the 3rd optical interface module, secondary signal processing module, described transmission channel, and they are monitored in real time.
Further, described first signal processing module and secondary signal processing module include GSM data link, TD-SCDMA data link, clock unit, monitoring unit and power subsystem, wherein, the GSM data link contains the GSM transmitting chain, GSM receives link and GSM based on feedback link, and the TD-SCDMA data link contains the TD-SCDMA transmitting chain, TD-SCDMA receives link and TD-SCDMA based on feedback link.
Further, described GSM transmitting chain is made up of FPGA data processor, a DAC and an IQ modulator, GSM receives chain route first frequency mixer, an ADC and described FPGA data processor and forms, and the GSM based on feedback link is made up of second frequency mixer, the 2nd ADC and described FPGA data processor; Described TD-SCDMA transmitting chain is made up of described FPGA data processor, the 2nd DAC and the 2nd IQ modulator, TD-SCDMA receives chain route three-mixer, the 3rd ADC and described FPGA data processor and forms, and the TD-SCDMA based on feedback link is made up of the 4th frequency mixer, the 4th ADC and described FPGA data processor.
Further, a described IQ modulator carries the mixing function and second local oscillation signal is provided for described second frequency mixer, and second local oscillation signal can make the GSM radiofrequency signal be converted to the intermediate-freuqncy signal of 115.2MHz behind second frequency mixer; Described the 2nd IQ modulator carries the mixing function and the 4th local oscillation signal is provided for described the 4th frequency mixer, and the 4th local oscillation signal can make the TD-SCDMA radiofrequency signal be converted to the intermediate-freuqncy signal of 115.2MHz behind the 4th frequency mixer.
Further, the FPGA data processor of described near-end machine is used to realize down-conversion, filtering extraction and the also string conversion of downstream signal, and the string and conversion, filtering interpolation, noise cancellation and the up-conversion that realize upward signal; The FPGA data processor of described remote termination is used to realize string and conversion, filtering interpolation, noise cancellation and the up-conversion of downstream signal, and the down-conversion, filtering extraction and and the string conversion that realize upward signal.
Further, described transmission channel comprises GSM power amplifier and TD-SCDMA power amplifier, and described receive path comprises GSM low noise amplifier and TD-SCDMA low noise amplifier.
Further, described second optical interface module and the 3rd optical interface module include six optical interfaces.
Based on the covering system of above-mentioned repeater, comprise a near-end machine and 2～36 remote terminations, they are by chain topology or star topology or ring topology connection, and the indoor baseband processing unit of described near-end machine and GSM base transceiver station and TD-SCDMA is coupled.
A kind of near-end machine of multi-modulation scheme digital optical fiber direct station comprises:
First duplexer of GSM standard;
The first optical interface module is used for baseband processing unit in the junction chamber;
The second optical interface module is used to connect remote termination and/or repeater and/or remote radio unit (RRU) and/or another near-end machine;
First signal processing module, be connected with first duplexer with described two optical interface modules, this first signal processing module finally is converted to serial digital signal output after being used for descending GSM radiofrequency signal handled, will finally be converted to the output of GSM radiofrequency signal after the up GSM Digital Signal Processing and up-downgoing TD-SCDMA digital signal is handled;
First control management module is connected with first signal processing module with described two optical interface modules, and they are monitored in real time;
Described first signal processing module comprises GSM data link, TD-SCDMA data link, clock unit, monitoring unit and power subsystem, wherein, the GSM data link contains the GSM transmitting chain, GSM receives link and GSM based on feedback link, and the TD-SCDMA data link contains the TD-SCDMA transmitting chain, TD-SCDMA receives link and TD-SCDMA based on feedback link.
A kind of remote termination of multi-modulation scheme digital optical fiber direct station comprises:
The 3rd optical interface module;
Second duplexer of GSM standard and the 3rd filter of TD-SCDMA standard;
The secondary signal processing module is connected with described the 3rd optical interface module, and is connected second duplexer and the 3rd filter with receive path to retransmitting antenna by transmission channel;
Second control management module is connected with receive path with described the 3rd optical interface module, secondary signal processing module, described transmission channel, and they are monitored in real time;
Described secondary signal processing module comprises GSM data link, TD-SCDMA data link, clock unit, monitoring unit and power subsystem, wherein, the GSM data link contains the GSM transmitting chain, GSM receives link and GSM based on feedback link, and the TD-SCDMA data link contains the TD-SCDMA transmitting chain, TD-SCDMA receives link and TD-SCDMA based on feedback link.
The utlity model has following beneficial effect:
1. this multi-modulation scheme digital optical fiber direct station has the upstream noise inhibition, time delay is adjusted automatically, can realize that the whole network is synchronous, telephone traffic detects, power is controlled digital pre-distortion functions such as (DPD, Digital PreDistortion) in real time.
2. this multi-modulation scheme digital optical fiber direct station helps reducing equipment volume, simplifies construction process, and is easy to centralized maintenance and management, thereby can effectively reduce equipment vendor and operating cost of operator and maintenance cost.
GSM and TD-SCDMA network optimization system use same site, have avoided the waste of site resource; Compare former covering scheme, GSM and the integrated covering of TD-SCDMA multi-modulation scheme have improved the efficient of system effectively, have embodied the spirit of " energy-saving and emission-reduction " fully.
3. adopt a near-end machine and a plurality of remote termination and/or a plurality of RRU (being remote radio unit (RRU)) to press chain topology or star topology or ring topology and form covering system, can realize the covering of long-distance large-range easily by optical fiber.
[description of drawings]
Fig. 1 is the theory diagram of this multi-modulation scheme digital optical fiber direct station;
Fig. 2 is the theory diagram of its signal processing module and optical interface module;
Fig. 3 is a kind of theory diagram of the covering system based on Fig. 1 repeater;
Fig. 4 is the theory diagram of another kind based on the covering system of Fig. 1 repeater.
[embodiment]
Below in conjunction with drawings and Examples the utility model is described further.
With reference to Fig. 1, this multi-modulation scheme digital optical fiber direct station relates to GSM and TD-SCDMA standard, for farther distance, wider covering, this repeater are divided into AU (Access Unit, i.e. " near-end machine ") 1 and RU (RemoteUnit, i.e. " remote termination ") 2, the two connects by optical fiber 3.
Near-end machine 1 comprises first duplexer 11, the first optical interface module 12, first signal processing module 13, the second optical interface module 14 and first control management module 15.Wherein, first duplexer 11 adopts GSM standard duplexer, is used for the outer interference of inhibition zone.The first optical interface module 12 is used to connect TD-SCDMA BBU (being the indoor baseband processing unit of TD-SCDMA), finishes light signal to the conversion to light signal of the conversion of the signal of telecommunication and the signal of telecommunication.The second optical interface module 14 provides 6 optical interfaces, is used to connect remote termination 2 and/or repeater and/or remote radio unit (RRU) and/or other near-end machine.First signal processing module 13 is connected with first duplexer 11 with described two optical interface modules 12,14, this first signal processing module finally is converted to serial digital signal output after being used for descending GSM radiofrequency signal handled, will finally be converted to the output of GSM radiofrequency signal after the up GSM Digital Signal Processing and up-downgoing TD-SCDMA digital signal is handled, and first signal processing module 13 can be gone up processing such as down-conversion, filtering interpolation, filtering extraction, noise suppressed, time delay adjustment, power control to signal.First control management module 15 is connected with first signal processing module 13 with described two optical interface modules 12,14, and they are monitored in real time.
Remote termination 2 comprises the 3rd optical interface module 21, secondary signal processing module 22, transmission channel 23, receive path 24, second duplexer 25, the 3rd filter 26 and second control management module 27.Wherein, the 3rd optical interface module 21 provides 6 optical interfaces, except connecting near-end machine 1, can also connect other remote termination, repeater and remote radio unit (RRU).Secondary signal processing module 22 is connected with described the 3rd optical interface module 21, and being connected second duplexer and the 3rd filter with receive path 24 to retransmitting antenna 28 by transmission channel 23, secondary signal processing module 22 can be finished down-conversion, filtering interpolation, filtering extraction, noise suppressed, time delay adjustment, power is controlled and DPD etc.Transmission channel 23 comprises GSM power amplifier and TD-SCDMA power amplifier, is used for the radiofrequency signal of secondary signal processing module 22 outputs is amplified, and exports second duplexer 25 and the 3rd filter 26 again to.Receive path 24 comprises GSM low noise amplifier and TD-SCDMA low noise amplifier, is used for inputing to secondary signal processing module 22 after the signal low noise amplification with second duplexer 25 and 26 receptions of the 3rd filter.Second duplexer 25 adopts GSM standard duplexer, and the 3rd filter 26 adopts TD-SCDMA standard filter, and they are used for the outer interference of inhibition zone, and the signal low-loss in GSM and the TD-SCDMA standard passband is passed through, and close the function on road in addition.Second duplexer 25 and the 3rd filter 26 can with one in pairs multiplexer replace.Second control management module 27 is connected with receive path 24 with described the 3rd optical interface module 21, secondary signal processing module 22, described transmission channel 23, and they are monitored in real time.Antenna 28 is used for the reception and the emission of GSM radiofrequency signal and TD-SCDMA radiofrequency signal.
First signal processing module 13 is identical with the structure of secondary signal processing module 22, and the structure of the first optical interface module 14 and the second optical interface module 21 is also identical.
With reference to Fig. 2, first signal processing module 13 and secondary signal processing module 22 include GSM data link 131, TD-SCDMA data link 132, clock unit 133, monitoring unit 134 and power subsystem 135, wherein, GSM data link 131 contains the GSM transmitting chain, GSM receives link and GSM based on feedback link, and TD-SCDMA data link 132 contains the TD-SCDMA transmitting chain, TD-SCDMA receives link and TD-SCDMA based on feedback link.
The GSM transmitting chain is made up of FPGA data processor 1311, a DAC 1312 and an IQ modulator 1313, GSM receives chain route first frequency mixer 1314, an ADC 1315 and described FPGA data processor 1311 and forms, and the GSM based on feedback link is made up of second frequency mixer 1316, the 2nd ADC 1317 and described FPGA data processor 1311; Described TD-SCDMA transmitting chain is made up of described FPGA data processor 1311, the 2nd DAC 1321 and the 2nd IQ modulator 1322, TD-SCDMA receives chain route three-mixer 1323, the 3rd ADC 1324 and described FPGA data processor 1311 and forms, and the TD-SCDMA based on feedback link is made up of the 4th frequency mixer 1325, the 4th ADC1326 and described FPGA data processor 1311.FPGA data processor 1311 is mainly finished following function: DDC (down-conversion), DUC (up-conversion), digital interpolative/filtering extraction, noise suppressed, time delay adjustment, power control, CFR (digital despicking processing) and DPD (digital pre-distortion) etc.Local oscillator LO1 provides local oscillation signal for respectively first frequency mixer 1314 and three-mixer 1323.Can realize an ADC 1315 and the 2nd ADC 1317 with a double channel A C, also can realize the 3rd ADC 1324 and the 4th ADC 1326 with a double channel A C.
The one IQ modulator 1313 carries the mixing function and second local oscillation signal is provided for described second frequency mixer 1316, and second local oscillation signal can make the GSM radiofrequency signal be converted to the intermediate-freuqncy signal of 115.2MHz behind second frequency mixer; Described the 2nd IQ modulator 1322 carries the mixing function and the 4th local oscillation signal is provided for described the 4th frequency mixer 1325, and the 4th local oscillation signal can make the TD-SCDMA radiofrequency signal be converted to the intermediate-freuqncy signal of 115.2MHz behind the 4th frequency mixer.
The FPGA data processor 1311 of near-end machine 1 is used to realize down-conversion, filtering extraction and the also string conversion of downstream signal, and the string and conversion, filtering interpolation, noise cancellation and the up-conversion that realize upward signal; The FPGA data processor of described remote termination 2 is used to realize string and conversion, filtering interpolation, noise cancellation and the up-conversion of downstream signal, and the down-conversion, filtering extraction and and the string conversion that realize upward signal.
More specifically, the second optical interface module 14 and the 3rd optical interface module 21 include the optical interface that 6 flank speeds can reach 3.125Gbit/s.Crystal oscillator input 61.44MHz clock reference, clock unit 133 output 76.8MHz and two kinds of clock signals of 153.6MHz; ARM monitoring unit 134 is used for the application of bsp driver and application software, and telephone traffic detects, and the control various interface.Power subsystem 135 is made up of LDO (Low Dropout regulator) and Switching Power Supply, and 1.2V, 1.8V, 3.3V, 5V power supply are provided, and wherein LDO only is the local oscillator power supply.
Among Fig. 2, SDRAM that is connected with FPGA data processor 1311 and FLASH are respectively FPGA data processor 1311 program running space and program's memory space are provided.
Transmission course with downstream signal is an example explanation Signal Processing process below:
GSM BTS (being the GSM base transceiver station) exports radiofrequency signal to near-end machine 1 in the mode of system, coupled, this radiofrequency signal inputs to first signal processing module 13 behind first duplexer, 11 frequency-selective filterings, after 1314 mixing of first frequency mixer, become the 115.2MHz intermediate-freuqncy signal, inputing to FPGA data processor 1311 again after an ADC 1315 conversion is DDC, carries out filtering extraction again, after the SERDES in the FPGA data processor 1311 carry out data and string conversion after, export RU to from the second optical interface module 14.TD-SCDMA BBU (being the indoor baseband processing unit of TD-SCDMA) output baseband signal is to near-end machine 1, this baseband signal is directly inputted into FPGA data processor 1311 after 12 conversions of the first optical interface module, behind process string and conversion, the filtering interpolation, through also string conversion, export RU and/or RRU to from the second optical interface module 14 then again.
In remote termination 2, the 3rd optical interface module 21 is converted to the signal of telecommunication with light signal and inputs to secondary signal processing module 22, FPGA data processor in secondary signal processing module 22 is gone here and there and conversion, filtering interpolation, noise cancellation, DUC are handled the back and exported the 115.2MHz intermediate-freuqncy signal, again after D/A conversion, IQ modulation and mixing, exporting transmission channel 23 to amplifies, through behind second duplexer 25 and the 3rd filter 26 frequency-selective filterings, launch through antenna 28 more then.GSM based on feedback link and TD-SCDMA based on feedback link respectively with transmission channel 23 in the GSM power amplifier be connected with the TD-SCDMA power amplifier, feedback signal FB1, the FB2 of sampling are become intermediate-freuqncy signal after mixing, after the A/D conversion, input to the FPGA data processor again and do DUC, CFR, DPD processing.
Adopt the utility model repeater can form multiple covering system, for example: at less coverage, can be connected by optical fiber, form a covering system with a near-end machine 1 and a remote termination 2.Size according to coverage, can also be connected by chain topology or star topology or ring topology with a near-end machine 1 and 2～36 remote terminations, form a covering system, in this covering system, GSM BTS output radiofrequency signal accesses to near-end machine 1 in the mode of system, coupled by radio frequency cable, and TD-SCDMA BBU output light signal inserts near-end machine 1 by optical fiber.Show a kind of by a near-end machine 1, two covering systems that 2 and two TD-SCDMA RRU of RU (being remote termination) (being the TD-SCDMA remote radio unit (RRU)) 4 connects to form by the chain topology as Fig. 3.
Choose not when same position and distance are far away when the information source of GSM and WCDMA, can take scheme shown in Figure 4, promptly the radiofrequency signal that GSM BTS is coupled out with a keyset 5 convert to light signal through Optical Fiber Transmission to near-end machine 1.
Above-described embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is an embodiment of the present utility model; and be not used in and limit protection range of the present utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. a multi-modulation scheme digital optical fiber direct station is used for the optimization of GSM network and TD-SCDMA network, it is characterized in that: comprise the near-end machine (1) and the remote termination (2) that connect by optical fiber (3),
Described near-end machine (1) comprising:
First duplexer (11) of GSM standard;
The first optical interface module (12) is used for baseband processing unit in the junction chamber;
The second optical interface module (14) is used to connect remote termination and/or repeater and/or remote radio unit (RRU) and/or another near-end machine;
First signal processing module (13), be connected with first duplexer with described two optical interface modules, this first signal processing module finally is converted to serial digital signal output after being used for descending GSM radiofrequency signal handled, will finally be converted to the output of GSM radiofrequency signal after the up GSM Digital Signal Processing and up-downgoing TD-SCDMA digital signal is handled;
First control management module (15) is connected with first signal processing module (13) with described two optical interface modules, and they are monitored in real time;
Described remote termination (2) comprising:
The 3rd optical interface module (21);
Second duplexer (25) of GSM standard and the 3rd filter (26) of TD-SCDMA standard;
Secondary signal processing module (22) is connected with described the 3rd optical interface module (21), and is connected second duplexer and the 3rd filter with receive path (24) to retransmitting antenna (28) by transmission channel (23);
Second control management module (27) is connected with receive path (24) with described the 3rd optical interface module (21), secondary signal processing module (22), described transmission channel (23), and they are monitored in real time.
2. repeater according to claim 1, it is characterized in that: described first signal processing module (13) and secondary signal processing module (22) include GSM data link (131), TD-SCDMA data link (132), clock unit (133), monitoring unit (134) and power subsystem (135), wherein, GSM data link (131) contains the GSM transmitting chain, GSM receives link and GSM based on feedback link, and TD-SCDMA data link (132) contains the TD-SCDMA transmitting chain, TD-SCDMA receives link and TD-SCDMA based on feedback link.
3. repeater according to claim 2 is characterized in that:
Described GSM transmitting chain is made up of FPGA data processor (1311), a DAC (1312) and an IQ modulator (1313), GSM receives chain route first frequency mixer (1314), an ADC (1315) and described FPGA data processor (1311) and forms, and the GSM based on feedback link is made up of second frequency mixer (1316), the 2nd ADC (1317) and described FPGA data processor (1311);
Described TD-SCDMA transmitting chain is made up of described FPGA data processor (1311), the 2nd DAC (1321) and the 2nd IQ modulator (1322), TD-SCDMA receives chain route three-mixer (1323), the 3rd ADC (1324) and described FPGA data processor (1311) and forms, and the TD-SCDMA based on feedback link is made up of the 4th frequency mixer (1325), the 4th ADC (1326) and described FPGA data processor (1311).
4. repeater according to claim 3 is characterized in that:
A described IQ modulator (1313) carries the mixing function and second local oscillation signal is provided for described second frequency mixer (1316), and second local oscillation signal can make the GSM radiofrequency signal be converted to the intermediate-freuqncy signal of 115.2MHz behind second frequency mixer;
Described the 2nd IQ modulator (1322) carries the mixing function and the 4th local oscillation signal is provided for described the 4th frequency mixer (1325), and the 4th local oscillation signal can make the TD-SCDMA radiofrequency signal be converted to the intermediate-freuqncy signal of 115.2MHz behind the 4th frequency mixer.
5. repeater according to claim 3 is characterized in that:
The FPGA data processor (1311) of described near-end machine (1) is used to realize down-conversion, filtering extraction and the also string conversion of downstream signal, and the string and conversion, filtering interpolation, noise cancellation and the up-conversion that realize upward signal;
The FPGA data processor of described remote termination (2) is used to realize string and conversion, filtering interpolation, noise cancellation and the up-conversion of downstream signal, and the down-conversion, filtering extraction and and the string conversion that realize upward signal.
6. repeater according to claim 1 is characterized in that: described transmission channel (23) comprises GSM power amplifier and TD-SCDMA power amplifier, and described receive path (24) comprises GSM low noise amplifier and TD-SCDMA low noise amplifier.
7. repeater according to claim 1 is characterized in that: described second optical interface module (14) and the 3rd optical interface module (21) include six optical interfaces.
8. adopt the covering system of each described repeater of claim 1-7, it is characterized in that: comprise a near-end machine (1) and 2～36 remote terminations (2), they are by chain topology or star topology or ring topology connection, and described near-end machine (1) is coupled with GSM base transceiver station and the indoor baseband processing unit of TD-SCDMA.
9. the near-end machine of a multi-modulation scheme digital optical fiber direct station is characterized in that, comprising:
First duplexer (11) of GSM standard;
The first optical interface module (12) is used for baseband processing unit in the junction chamber;
The second optical interface module (14) is used to connect remote termination and/or repeater and/or remote radio unit (RRU) and/or another near-end machine;
First signal processing module (13), be connected with first duplexer with described two optical interface modules, this first signal processing module finally is converted to serial digital signal output after being used for descending GSM radiofrequency signal handled, will finally be converted to the output of GSM radiofrequency signal after the up GSM Digital Signal Processing and up-downgoing TD-SCDMA digital signal is handled;
First control management module (15) is connected with first signal processing module (13) with described two optical interface modules, and they are monitored in real time;
Described first signal processing module (13) comprises GSM data link (131), TD-SCDMA data link (132), clock unit (133), monitoring unit (134) and power subsystem (135), wherein, GSM data link (131) contains the GSM transmitting chain, GSM receives link and GSM based on feedback link, and TD-SCDMA data link (132) contains the TD-SCDMA transmitting chain, TD-SCDMA receives link and TD-SCDMA based on feedback link.
10. the remote termination of a multi-modulation scheme digital optical fiber direct station is characterized in that, comprising:
The 3rd optical interface module (21);
Second duplexer (25) of GSM standard and the 3rd filter (26) of TD-SCDMA standard;
Secondary signal processing module (22) is connected with described the 3rd optical interface module (21), and is connected second duplexer and the 3rd filter with receive path (24) to retransmitting antenna (28) by transmission channel (23);
Second control management module (27) is connected with receive path (24) with described the 3rd optical interface module (21), secondary signal processing module (22), described transmission channel (23), and they are monitored in real time;
Described secondary signal processing module (22) comprises GSM data link, TD-SCDMA data link, clock unit, monitoring unit and power subsystem, wherein, the GSM data link contains the GSM transmitting chain, GSM receives link and GSM based on feedback link, and the TD-SCDMA data link contains the TD-SCDMA transmitting chain, TD-SCDMA receives link and TD-SCDMA based on feedback link.
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| CN109257098A (en) * | 2018-09-13 | 2019-01-22 | 郑州三友软件科技有限公司 | A kind of more scene communication full-service light distribution system control methods |
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