CN201252544Y - Single-car single-antenna scatter communication device - Google Patents
Single-car single-antenna scatter communication device Download PDFInfo
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- CN201252544Y CN201252544Y CNU2008201056339U CN200820105633U CN201252544Y CN 201252544 Y CN201252544 Y CN 201252544Y CN U2008201056339 U CNU2008201056339 U CN U2008201056339U CN 200820105633 U CN200820105633 U CN 200820105633U CN 201252544 Y CN201252544 Y CN 201252544Y
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Abstract
The utility model discloses a single-car single-antenna scatter communication device relating to a scatter communication device capable of resisting fast fading and has a single transceiver and a single-antenna structure in the field of communication. The device comprises a modulator, a demodulator, an intermediate frequency amplifier, an auxiliary multiplexer, an auxiliary coupler, an upper transducer, a power amplifying unit, a duplexer, a low-noise amplifier, a lower transducer, an antenna and other parts. The device adopts the frequency-division and duplex modem mode, the real time communication channel detecting technique and the self-adaptive speed-selecting technique to enable the system to work at the optimum transmission frequency on a current communication channel, and has the strong ability of resisting the fast fading of the communication channel. The device has the advantages of high integration degree, small volume, light weight, low cost, good mobility and the like, and the device is particularly suitable for the scatter communication device with small capacity and middle capacity.
Description
Technical field
The utility model relates to a kind of bicycle single antenna scatter communication device in the communications field, and particularly suitable requires the middle low capacity scatter communication chain circuit device that mobility is good, need open fast.
Background technology
Traditional scatter communication equipment all is that the rapid fading of adopting the MIMO technology to overcome channel influences.Theory and practice all proves, and adopting diversity emission/reception, maximum ratio folding is the effective measures that overcome rapid fading and raising signal to noise ratio.But,, therefore caused certain difficulty for a large amount of the popularizing of scatter communication equipment owing to adopt the scattering equipment complexity height of MIMO technology, bulky, mobility difference and the more high inherent defect of price.
Summary of the invention
The utility model purpose is to avoid the weak point in the above-mentioned background technology and provides a kind of and can adopt the bicycle single antenna construction, can detect channel in real time, makes equipment always work in bicycle single antenna scatter communication device on the frequency optimum traffic of current channel.The utility model can replace baroque MIMO emission/reception technique, also eliminated the power scattering problem that the MIMO technology is brought, have higher power utilization and very strong anti-channel fading ability, the structure of traditional scatter communication equipment is simplified, and cost is minimized, and it is little also to have a volume, in light weight, stable performance, easy to maintenance, maneuverability such as significantly improves at characteristics.
The purpose of this utility model is achieved in that
It comprises modulator 1, demodulator 2, intermediate frequency amplifier 3, auxiliary multiplexer 4, auxiliary coupler 5, monitoring unit 6, upconverter 7, power amplifier unit 8, duplexer 9, antenna 10, LNA 11, low-converter 12, power supply 37, wherein the input port 5,6 of auxiliary multiplexer 4 links to each other with symbol clock B port, the information code current A port of input by holding wire respectively, its input port 3,4 is connected with the output port 2,3 of demodulator 2, and its output port 1,2 is connected with the input port 1,2 of modulator 1 respectively; Modulator 1 input port 3,4,5 is connected with the output port 5,6,7 of auxiliary coupler 5 respectively, and output port 6 links to each other with upconverter 7 input ports 1; Upconverter 7 output ports 2 link to each other with the input port 1 of power amplifier unit 8; The output port 2 of power amplifier unit 8 is connected with the input port 1 of duplexer 9; Duplexer 9 outputs, input port 2,3 are connected with input, the output port 1,2 of antenna 10 respectively, and its output port 4 is connected with the input port 1 of LNA (11); Antenna 10 inputs, output port are connected with port E, F; The output port 2 of LNA 11 is connected with the input port 1 of low-converter 12; The output port 2 of low-converter 12 links to each other with the input port 1 of intermediate frequency amplifier 3 by IF cable; The output port 2 of intermediate frequency amplifier 3 is connected with the input port 1 of demodulator 2, and its input port 3 is connected with demodulator 2 output ports 6; Demodulator 2 output ports 4,5 are connected with the input port 1,2 of auxiliary coupler 5 respectively; Auxiliary coupler 5 output ports 3,4 are connected with symbol clock D port, the information code current C port of output respectively; Monitoring unit 6 is connected to the corresponding policing port of each module in the iic bus mode by port DATA; The corresponding power end with each parts of power supply 37 output ports+V voltage end also connects.
The utility model modulator 1 comprises differential coding module 13, base band shaping module 14, the module that multiplies each other 15, mixer 16, D/A conversion module 17, low pass filter 18, frequency mixer 19, band pass filter 20, amplifier 21, carrier Control module 22, detectable signal generation module 23, local oscillator control module 24, input port 1,2 pin of described differential coding module 13 are connected with the output port 1,2 of auxiliary multiplexer 4, and its output port 3 pin are connected with input port 1 pin of base band shaping module 14; Output port 2 pin of base band shaping module 14 link to each other with input port 1 pin of the module 15 that multiplies each other; Output port 1 pin of carrier Control module 22 is connected with input port 2 pin of the module 15 that multiplies each other, and its input port 2,3,4 pin are connected with the output port 5,6,7 of auxiliary coupler 5 respectively; The module that multiplies each other 15 output ports 3 pin are connected with mixer 16 input ports 1 pin; Detectable signal generation module 23 output ports 1 pin connects input port 2 pin of mixer 16; Mixer 16 output ports 3 pin are connected with D/A conversion module 17 input ports 1 pin; D/A conversion module 17 output ports 2 pin connect low pass filter 18 input ports 1 pin; Low pass filter 18 output ports 2 pin are connected with input port 1 pin of frequency mixer 19; Local oscillator control module 24 output ports 1 pin is connected with input port 2 pin of frequency mixer 19; Frequency mixer 19 output ports 3 pin are connected with input port 1 pin of band pass filter 20; Band pass filter 20 output ports 2 pin connect input port 1 pin of amplifier 21; Output port 2 pin of amplifier 21 and the input port of upconverter 71 are connected by IF cable; Each input 19 pin of differential coding module 13, base band shaping module 14, the module that multiplies each other 15, mixer 16, D/A conversion module 17, low pass filter 18, frequency mixer 19, band pass filter 20, amplifier 21, carrier Control module 22, detectable signal generation module 23, local oscillator control module 24 are connected with power supply 37 outputs+V voltage end, and each input 20 pin is connected with earth terminal.
The utility model demodulator 2 comprises A/D conversion module 25, digital down converter group 26-1,26-2, extract Postponement module 28, AGC detection module 29, diversity merges module 30, coherent detector 31, integration decision device 32, differential decoderl 33, carrier Control module group 27-1,27-2, bit synchronization extraction module 34, FFT processing module 35, comparator module 36, input port 1 pin of described A/D conversion module 25 is connected output port 2 with the output port 2 of intermediate frequency amplifier 3,3 pin connect digital down converter group 26-1 respectively, each input port 1 of 26-2,9 pin; Carrier Control module group 27-1 output port 1,2 pin are connected with input port 5,4 pin of digital down converter group 26-1 respectively; Digital Down Convert group 26-1 output port 2 pin connect extraction Postponement module 28, AGC detection module 29 each input port 1 pin respectively, and Digital Down Convert group 26-1 output port 3 pin connect extraction Postponement module 28, AGC detection module 29 each input port 2 pin respectively; Extracting Postponement module 28 output ports 4,3 pin is connected with diversity merging module 30 input ports 1,2 pin; AGC detection module 29 output ports 3 pin merge module 30 input ports 3 pin with diversity and are connected, and its output port 4 pin are connected with intermediate frequency amplifier 3 input ports 3; Diversity merges input port 1,2 pin that module 30 output ports 4,5 pin one tunnel connect coherent detector 31 respectively, and another road connects input port 1,2 pin of synchronous extraction module 34 respectively; Coherent detector 31 output ports 3 pin are connected with integration decision device 32 input ports 1 pin, and its input port 4 pin link to each other with integration decision device 32 output ports 5 pin; Integration decision device 32 input ports 2 pin are connected with bit synchronization module 34 output ports 3 pin, and its output port 3,4 pin link to each other with differential decoding module 33 input ports 2,1 pin; Differential decoderl 33 output ports 3,4 pin are connected with the input port 2,1 of auxiliary coupler 5 respectively; Digital down converter group 26-2 input port 10 to 17 pin connect carrier Control module group 27-2 output port 1 to 8 pin respectively, and its output port 1 to 8 pin connects input port 1 to 8 pin of FFT processing module 35 respectively; Comparator module 36 input ports 1 to 8 pin is connected with output port 9 to 16 pin of FFT processing module 35; Comparator module 36 output ports 9,10 pin are connected with auxiliary multiplexer 4 input ports 4,3 respectively; A/D conversion module 25, digital down converter group 26-1,26-2, carrier Control module group 27-1,27-2, extraction Postponement module 28, AGC detection module 29, diversity merging module 30, coherent detector 31, integration decision device 32, differential decoderl 33, bit synchronization extraction module 34, FFT processing module 35, comparator module 36 each input port 19 pin are connected with power supply 37 outputs+V voltage end, and each input port 20 pin is connected with earth terminal.
The utility model is compared background technology and is had following advantage:
1. the modulator 1 that adopts of the utility model, modulation signal and detectable signal are launched simultaneously, can survey a plurality of frequencies in the channel, every frame is surveyed channel, and according to tranmitting frequency to the real-time change modulation signal of the testing result of channel, have very strong anti fading performance and stronger anti-interference, the anti-receipts ability of detecing.
2. the demodulator 2 of the utility model employing has been realized Channel Detection and the mode of operation of communicating by letter and carrying out simultaneously first in the course of work of scatter communication equipment, and communication efficiency is greatly improved; By real-time detection to channel, can select the frequency of suitable current Channel Transmission, reached the effect of selective diversity combining; Adopt the digital detection mode, make the intermediate frequency amplifier control characteristic better; Signal is carried out the demodulation of distortion adaptive coherent, realized the performance of good opposing intersymbol interference.
3. the utility model circuit block adopts extensive field programmable device to make, and therefore can realize neatly modification to running parameter the structure of equipment being simplified greatly by disposing different programs, and cost significantly reduces.
4. the integrated degree height of the utility model, so volume is little, in light weight, stable and reliable for performance, easy to maintenance, the equipment maneuverability is improved significantly.
Description of drawings
Fig. 1 is an electric functional-block diagram of the present utility model.
Fig. 2 is the electrical schematic diagram of the utility model modulator 1 embodiment.
Fig. 3 is the electrical schematic diagram of the utility model demodulator 2 embodiment.
Embodiment
Referring to figs. 1 through Fig. 3, the utility model is made up of modulator 1, demodulator 2, intermediate frequency amplifier 3, auxiliary multiplexer 4, auxiliary coupler 5, monitoring unit 6, upconverter 7, power amplifier unit 8, duplexer 9, antenna 10, LNA 11, low-converter 12, power supply 37.Fig. 1 is an electric functional-block diagram of the present utility model, and embodiment presses Fig. 1 connection line.The effect of wherein auxiliary multiplexer 4 is the frequency of optimum traffic information of the external information code stream by input port A input, current channel that demodulator 2 is sent into to be carried out multiple connection handle, and the information code current after will handling and symbol clock are given modulator 1; Composite bit stream and symbol clock that auxiliary coupler 5 receiving demodulation devices 2 demodulate, isolate business information and export to outside letter sign indicating number port C, the output symbol clock is to external symbol clock port D, simultaneously isolated frequency indication information is delivered to modulator 1, modulator 1 is determined tranmitting frequency according to the frequency indication information, get signal after will modulating and deliver to up-conversion 7, upconverter 7 moves signal frequency to radio frequency band, power amplifier unit 8 is sent into duplexer 9 after the signal of importing is amplified, duplexer 9 is delivered to antenna 10 with signal, and antenna 10 is launched signal; Antenna 10 receives the signal of opposite end emission simultaneously, its received signal is sent into LNA 11 by duplexer 9, LNA 11 is sent into low-converter 12 after it is amplified, low-converter 12 becomes 70MHz with the centre frequency of signal, intermediate frequency amplifier 3 amplifies the intermediate-freuqncy signal of input, signal after the amplification again with the local oscillation signal mixing, signal after the mixing exports demodulator 2 to, its AGC control voltage is provided by demodulator 2,2 pairs of signals of demodulator carry out coherent demodulation, and the clock sign indicating number that demodulates delivered to auxiliary coupler 5, demodulator 2 is given auxiliary multiplexer 4 with detected current channel frequency optimum traffic information, and the operating state of 6 pairs of whole communication devices of monitoring unit is monitored.Embodiment assists multiplexer 4, auxiliary coupler 5, monitoring unit 6 all to adopt U.S. Alterna company to produce Stratix Series FPGA chip manufacturing.Intermediate frequency amplifier 3 adopts XN402 type integrated amplifier to make.The HSB-3 frequency mixer that upconverter 7, low-converter 12 adopt Chengdu Asia Optical to produce is made.Power amplifier unit 8, duplexer 9, antenna 10, LNA 11 modules all adopt the self-control circuit production.
The input port 1,2 of the utility model modulator 1 is imported information code current, the symbol clock of output port 1,2 outputs of auxiliary multiplexer 1 respectively, its input port 3,4,5 receives the frequency indication information that auxiliary coupler 5 output ports picked out in 5,6,7 minutes, and modulator 1 is determined tranmitting frequency according to this information.It is made up of differential coding module 13, base band shaping module 14, the module that multiplies each other 15, mixer 16, D/A conversion module 17, low pass filter 18, frequency mixer 19, band pass filter 20, amplifier 21, carrier Control module 22, detectable signal generation module 23, local oscillator control module 24.Fig. 2 is the electrical schematic diagram of the utility model modulator 1, and embodiment presses Fig. 2 connection line.Differential coding module 13 is carried out differential coding with input code flow, base band shaping module 14 is carried out base band shaping with the code stream of differential coding module 13 outputs, the frequency indication information that carrier Control module 22 is sent into according to auxiliary coupler 5 produces corresponding carrier wave, the module that multiplies each other 15 forms the Low Medium Frequency modulation signal with the carrier wave and the base band shaping signal multiplication of 22 outputs of carrier Control module.Detectable signal generation module 23 produces 8 simple signals and is used for surveying the current characteristic of channel, mixer 16 is delivered to D/A conversion module 17 after with modulation signal and detectable signal addition, D/A conversion module 17 is that analog signal is delivered to low pass filter 18 with the digital signal transition of input, signal is finished mixing through the local oscillator that produces with local oscillator control module 18 after the low-pass filtering in frequency mixer 19, signal after the mixing enters amplifier 21 through band pass filter 20 after to its filtering, sends modulator 1 to upconverter 7 through amplifying signal.Embodiment differential coding module 13, base band shaping module 14, the module that multiplies each other 15, carrier Control module 22, detectable signal generation module 23 all adopt a U.S. Alterna company to produce Stratix Series FPGA chip manufacturing.The FLB-2-1 mixer that mixer 16 adopts the company in sky, Chengdu to produce is made.The AD9763 cake core that D/A conversion module 17 adopts U.S. A/D company to produce is made.Low pass filter 18 adopts the PLP-18 low pass filter of the company in sky, Chengdu to make.The HSB-3 frequency mixer that frequency mixer 19 adopts Chengdu Asia Optical to produce is made.The SBP-70 type band pass filter that band pass filter 20 adopts the company in sky, Chengdu to produce is made.Amplifier 21 adopts XN402 type integrated amplifier to make.The AD9854 cake core that local oscillator control module 24 adopts U.S. A/D company to produce is made.
The effect of the utility model demodulator 2 is to detect current channel in real time, the frequency information of detected the most suitable current channel is delivered to auxiliary multiplexer 4, carrying out the distortion adaptive coherent to received signal detects, recover source code flow information, thereby produce the gain of AGC control voltage control intermediate frequency amplifier.It is made up of A/D conversion module 25, digital down converter group 26-1,26-2, carrier Control module group 27-1,27-2, extraction Postponement module 28, AGC detection module 29, diversity merging module 30, coherent detector 31, integration decision device 32, differential decoderl 33, bit synchronization extraction module 34, FFT processing module 35, comparator module 36.Fig. 3 is the electrical schematic diagram of the utility model demodulator 3, and embodiment presses Fig. 3 connection line.Wherein A/D converter 25 receives the analog signal of the output port 2 of intermediate frequency amplifier 3, and by sampling it is become digital signal.Digital down converter group 26-1,26-2 carry out down-converted to modulation signal and the detectable signal that receives respectively, with its vanishing intermediate-freuqncy signal.Carrier Control module group 27-1 provide corresponding carrier wave for Digital Down Convert, extracting 28 pairs of signals of Postponement module reduces the character rate processing and does suitable delay, AGC detection module 29 is carried out digital detection with the zero intermediate frequency signals after the Digital Down Convert, AGC after detection control voltage is delivered to intermediate frequency amplifier 3, detected current channel working frequency information is delivered to diversity merge module 30.Diversity merges module 30 signal is carried out the merging of frequency selecting type, 31 pairs of zero intermediate frequency signals of coherent detector are carried out coherent detection, integration decision device 32 carries out the integration judgement with the coherent detection signal of input, the code word that rules out exports differential decoding module 33 to, bit synchronization extraction module 34 produces bit synchronization signal, bit synchronization signal exports integration decision device 32 to, and the code word that 33 pairs of signals of differential decoding module will carry out after differential decoding will be deciphered is delivered to auxiliary coupler 5.Digital down converter group 26-2 delivers to the FFT processing module after with the detectable signal down-conversion, power by the fft analysis detectable signal, comparator module compares the detectable signal of handling through FFT, it is minimum with which kind of frequency in definite current channel to decay, and the iptimum speed information that compares is delivered to auxiliary multiplexer 4.The Stratix Series FPGA chip manufacturing that embodiment digital down converter group 26-1,26-2, carrier Control module group 27-1,27-2, extraction Postponement module 28, AGC detection module 29, diversity merging module 30, coherent detector 31, integration decision device 32, differential decoderl 33, bit synchronization extraction module 34, FFT processing module 35, comparator module 36 all adopt a U.S. Alterna company to produce.The AD9218 cake core that the A/D conversion module adopts U.S. A/D company to produce is made.
The utility model power supply 37 provides the direct-current working volts of modulator 1, demodulator 2, intermediate frequency amplifier 3, auxiliary multiplexer 4, auxiliary coupler 5, and embodiment adopts commercially available general integrated constant voltage dc source piece to make, and its output+V voltage is 3.3V.
The concise and to the point operation principle of the utility model is as follows:
During transmission information, auxiliary multiplexer 4 carries out the multiple connection processing with the continuous letter sign indicating number of external business information end A input and from demodulator 2 detected optimum transmitting frequency information, clock sign indicating number after the multiple connection is sent into modulator 1, signal from auxiliary multiplexer 4 carries out the difference volume in modulator 1, the base band moulding, carrier Control module 22 produces corresponding carrier wave according to the current channel frequency optimum traffic information that auxiliary coupler 5 provides, baseband signal and carrier wave are in module 25 mixing of multiplying each other, the detectable signal that Low Medium Frequency modulation signal after the mixing and detectable signal generation module 23 produce merges in mixer 16, it is analog signal with digital signal transition that signal after the merging is crossed D/A conversion module 17, cross low pass filter 18 then and carry out low-pass filtering, the local oscillator mixing that filtered signal and local oscillator control module 24 produce, the signal of mixing is crossed band pass filter 19, the signal of process band pass filter enters amplifier 21 again and amplifies, enter upconverter 7 through amplifying signal, through entering power amplifier unit 8 after upconverter 7 frequency conversions, signal is amplified into duplexer 9 through power amplifier unit 8, duplexer 9 is delivered to antenna with signal, and antenna 10 is launched signal.
During reception information, antenna 10 transmits the opposite end and sends into duplexer 9 after receiving, duplexer 9 is sent the signal that receives into LNA 11, LNA 11 is delivered to low-converter 12 after signal is amplified, send into intermediate frequency amplifier 3 through down signals, intermediate frequency amplifier 3 control voltages are provided by demodulator 2, send into demodulator 2 through the intermediate-freuqncy signal of amplifying, demodulator 2 carries out the D/A conversion with signal earlier, digital signal one tunnel after the conversion is carried out Digital Down Convert, diversity merges the demodulation of laggard line distortion adaptive coherent, signal after the demodulation is sent into auxiliary coupler 5 behind differential decoding, auxiliary coupler picked out business information in 5 minutes and delivers to output port C, D.Another road signal carries out Digital Down Convert with detectable signal to be handled, and carries out fft analysis then and handles, and will send into comparator to determine which kind of speed is iptimum speed through the signal that FFT handles, and current channel frequency optimum traffic information is delivered to auxiliary multiplexer 4.
The utility model mounting structure is as follows:
Claims (2)
1. bicycle single antenna scatter communication device, it comprises intermediate frequency amplifier (3), auxiliary multiplexer (4), auxiliary coupler (5), monitoring unit (6), upconverter (7), power amplifier unit (8), duplexer (9), antenna (10), LNA (11), low-converter (12), power supply (37), it is characterized in that: also comprise modulator (1), demodulator (2), the input port 5 of described auxiliary multiplexer (4), 6 symbol clock B ports by holding wire and input respectively, information code current A port links to each other, its input port 3,4 with the output port 2 of demodulator (2), 3 are connected, its output port 1,2 respectively with the input port 1 of modulator (1), 2 are connected; Modulator (1) input port 3,4,5 is connected with the output port 5,6,7 of auxiliary coupler (5) respectively, and output port 6 links to each other with upconverter (7) input port 1; Upconverter (7) output port 2 links to each other with the input port 1 of power amplifier unit (8); The output port 2 of power amplifier unit (8) is connected with the input port 1 of duplexer (9); Duplexer (9) output, input port 2,3 are connected with input, the output port 1,2 of antenna (10) respectively, and its output port 4 is connected with the input port 1 of LNA (11); Antenna (10) input, output port are connected with port E, F; The output port 2 of LNA (11) is connected with the input port 1 of low-converter (12); The output port 2 of low-converter (12) links to each other by the input port 1 of IF cable with intermediate frequency amplifier (3); The output port 2 of intermediate frequency amplifier (3) is connected with the input port 1 of demodulator (2), and its input port 3 is connected with demodulator (2) output port 6; Demodulator (2) output port 4,5 is connected with the input port 1,2 of auxiliary coupler (5) respectively; Auxiliary coupler (5) output port 3,4 is connected with symbol clock D port, the information code current C port of output respectively; Monitoring unit (6) is connected to the corresponding policing port of each module in the iic bus mode by port DATA; Power supply (37) output port+corresponding power end with each parts of V voltage end also connects.2. bicycle single antenna scatter communication device according to claim 1, it is characterized in that: modulator (1) comprises differential coding module (13), base band shaping module (14), the module that multiplies each other (15), mixer (16), D/A conversion module (17), low pass filter (18), frequency mixer (19), band pass filter (20), amplifier (21), carrier Control module (22), detectable signal generation module (23), local oscillator control module (24), the input port 1 of described differential coding module (13), the output port 1 of 2 pin and auxiliary multiplexer (4), 2 are connected, and its output port 3 pin are connected with input port 1 pin of base band shaping module (14); Output port 2 pin of base band shaping module (14) link to each other with input port 1 pin of the module that multiplies each other (15); Output port 1 pin of carrier Control module (22) is connected with input port 2 pin of the module that multiplies each other (15), and its input port 2,3,4 pin are connected with the output port 5,6,7 of auxiliary coupler (5) respectively; The module that multiplies each other (15) output port 3 pin are connected with mixer (16) input port 1 pin; Detectable signal generation module (23) output port 1 pin connects input port 2 pin of mixer (16); Mixer (16) output port 3 pin are connected with D/A conversion module (17) input port 1 pin; D/A conversion module (17) output port 2 pin connect low pass filter (18) input port 1 pin; Low pass filter (18) output port 2 pin are connected with input port 1 pin of frequency mixer (19); Local oscillator control module (24) output port 1 pin is connected with input port 2 pin of frequency mixer (19); Frequency mixer (19) output port 3 pin are connected with input port 1 pin of band pass filter (20); Band pass filter (20) output port 2 pin connect input port 1 pin of amplifier (21); Output port 2 pin of amplifier (21) and the input port of upconverter (7) 1 are connected by IF cable; Each input 19 pin of differential coding module (13), base band shaping module (14), the module that multiplies each other (15), mixer (16), D/A conversion module (17), low pass filter (18), frequency mixer (19), band pass filter (20), amplifier (21), carrier Control module (22), detectable signal generation module (23), local oscillator control module (24) are connected with power supply (37) output+V voltage end, and each input 20 pin is connected with earth terminal.
3. bicycle single antenna scatter communication device according to claim 1 and 2, it is characterized in that: demodulator (2) comprises A/D conversion module (25), digital down converter group (26-1,26-2), extract Postponement module (28), AGC detection module (29), diversity merges module (30), coherent detector (31), integration decision device (32), differential decoderl (33), carrier Control module group (27-1,27-2), bit synchronization extraction module (34), FFT processing module (35), comparator module (36), input port 1 pin of described A/D conversion module (25) is connected output port 2 with the output port 2 of intermediate frequency amplifier (3), 3 pin connect digital down converter group (26-1 respectively, 26-2) each input port 1,9 pin; Carrier Control module group (27-1) output port 1,2 pin are connected with input port 5,4 pin of digital down converter group (26-1) respectively; Digital Down Convert group (26-1) output port 2 pin connect extraction Postponement module (28), each input port 1 pin of AGC detection module (29) respectively, and Digital Down Convert group (26-1) output port 3 pin connect extraction Postponement module (28), each input port 2 pin of AGC detection module (29) respectively; Extracting Postponement module (28) output port 4,3 pin is connected with diversity merging module (30) input port 1,2 pin; AGC detection module (29) output port 3 pin merge module (30) input port 3 pin with diversity and are connected, and its output port 4 pin are connected with intermediate frequency amplifier (3) input port 3; Diversity merges input port 1,2 pin that module (30) output port 4,5 pin one tunnel connect coherent detector (31) respectively, and another road connects input port 1,2 pin of synchronous extraction module (34) respectively; Coherent detector (31) output port 3 pin are connected with integration decision device (32) input port 1 pin, and its input port 4 pin link to each other with integration decision device (32) output port 5 pin; Integration decision device (32) input port 2 pin are connected with bit synchronization module (34) output port 3 pin, and its output port 3,4 pin link to each other with differential decoding module (33) input port 2,1 pin; Differential decoderl (33) output port 3,4 pin are connected with the input port 2,1 of auxiliary coupler (5) respectively; Digital down converter group (26-2) input port 10 to 17 pin connect carrier Control module group (27-2) output port 1 to 8 pin respectively, and its output port 1 to 8 pin connects input port 1 to 8 pin of FFT processing module (35) respectively; Comparator module (36) input port 1 to 8 pin is connected with output port 9 to 16 pin of FFT processing module (35); Comparator module (36) output port 9,10 pin are connected with auxiliary multiplexer (4) input port 4,3 respectively; A/D conversion module (25), digital down converter group (26-1,26-2), carrier Control module group (27-1,27-2), extraction Postponement module (28), AGC detection module (29), diversity merging module (30), coherent detector (31), integration decision device (32), differential decoderl (33), bit synchronization extraction module (34), FFT processing module (35), each input port 19 pin of comparator module (36) are connected with power supply (37) output+V voltage end, and each input port 20 pin is connected with earth terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201056339U CN201252544Y (en) | 2008-08-27 | 2008-08-27 | Single-car single-antenna scatter communication device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201056339U CN201252544Y (en) | 2008-08-27 | 2008-08-27 | Single-car single-antenna scatter communication device |
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| CN201252544Y true CN201252544Y (en) | 2009-06-03 |
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| CNU2008201056339U Expired - Fee Related CN201252544Y (en) | 2008-08-27 | 2008-08-27 | Single-car single-antenna scatter communication device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011131092A1 (en) * | 2010-04-23 | 2011-10-27 | 华为技术有限公司 | Radio frequency signal loopback method and outdoor unit |
| CN104734771A (en) * | 2015-04-21 | 2015-06-24 | 中国电子科技集团公司第五十四研究所 | Low-elevation air-ground communication device |
-
2008
- 2008-08-27 CN CNU2008201056339U patent/CN201252544Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011131092A1 (en) * | 2010-04-23 | 2011-10-27 | 华为技术有限公司 | Radio frequency signal loopback method and outdoor unit |
| US20120294198A1 (en) * | 2010-04-23 | 2012-11-22 | Huawei Technologies Co., Ltd. | Radio frequency signal loopback method and outdoor unit |
| US8995309B2 (en) | 2010-04-23 | 2015-03-31 | Huawei Technologies Co., Ltd. | Radio frequency signal loopback method and outdoor unit |
| CN104734771A (en) * | 2015-04-21 | 2015-06-24 | 中国电子科技集团公司第五十四研究所 | Low-elevation air-ground communication device |
| CN104734771B (en) * | 2015-04-21 | 2018-03-30 | 中国电子科技集团公司第五十四研究所 | A kind of low elevation angle earth-space communication device |
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