CN102377448A - Multichannel data transmission radio station and data transmission method thereof - Google Patents
Multichannel data transmission radio station and data transmission method thereof Download PDFInfo
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Abstract
The invention discloses a multichannel data transmission radio station, comprising a sending module and a receiving module, wherein the sending module is used for sending data in M sending channels in parallel, and the receiving module is used for receiving data in N receiving channels in parallel. Meanwhile, the invention also discloses a data transmission method. By using the multichannel data transmission radio station and the data transmission method thereof, the data transmission efficiency is improved.
Description
Technical field
The present invention relates to field of wireless communication, particularly a kind of multi-channel data transmission radio station and data transmission method thereof.
Background technology
At present, the capital equipment of wireless data transmission is the transfer of data radio station, and the transfer of data radio station mainly is used to bear long-range data collection task.Fig. 1 is the transfer of data radio station transmission network sketch map of prior art, and is as shown in Figure 1, and the transfer of data radio station transmission network of prior art comprises main website 101 and slave station 102; A main website 101 covers a plurality of slave stations 102, and wherein, main website 101 is the transfer of data radio station with slave station 102; But responsibility is slightly variant, and particularly, main website 101 is responsible for the slave station 102 under its covering is carried out the inquiry of data; Slave station 102 sends it back main website with data, in addition, need to prove; In practical application, main website and slave station also have the mutual of signaling, and main website and slave station all relate to the reception and the process of transmitting of data.
In the prior art, main website and slave station are single pass transfer of data radio station, and when sending data, data are transmitted to a main platform or slave station after modulation, when receiving data, receive and carry out demodulation then from the data of a main platform or slave station.When main website and slave station communicate, use pre-assigned some narrow band frequency resources, adopt the point-to-point communication pattern of poll to carry out.For example, on synchronization, can only there be a slave station that data are sent it back main website, when next slave station need send data, must wait until that next constantly.When the slave station quantity under main website covers was too much, the time of a cost of poll will be very long, supposes that slave station of visit needs 0.5 second, and poll wait timeout time set is 3 seconds.If system includes 100 slave stations; Then the polling cycle under all slave station reference performances is 0.5 * 100=50 second; If a slave station is arranged owing to reasons such as equipment fault, frequency interferences cause bust this; System will wait for 3 seconds at this terminal, and then the long period of poll possibly be 3 * 100=300 second.
It is thus clear that the data transmission efficiency in transfer of data radio station is lower in the prior art.
Summary of the invention
In view of this, the present invention provides a kind of multi-channel data transmission radio station and data transmission method thereof, can improve data transmission efficiency.
For solving the problems of the technologies described above, technical scheme of the present invention is achieved in that
A kind of multi-channel data transmission radio station, this radio station comprises sending module and receiver module, wherein,
Sending module is used for parallel data of sending on M the sendaisle, and receiver module is used for the data on the parallel receive N receive path, and wherein, M and N are the positive integer greater than 1.
Said sending module comprises: string and conversion unit, M road sendaisle, synthesis unit and radio frequency unit; Wherein, M road sendaisle is parallel to be connected between string and conversion unit and the synthesis unit, and every road sendaisle structure is identical, and every road sendaisle comprises: modulating unit, low-pass filter unit, up-sampling unit, digital mixing unit and digital controlled oscillator; Wherein
String and conversion unit respectively with M road sendaisle in modulating unit link to each other, be used for converting one tunnel serial data into data that the M road walks abreast, and every circuit-switched data be sent to the modulating unit on this road respectively according to the Data-carrying ability of each sendaisle;
Modulating unit is connected between string and conversion unit and the low-pass filter unit, be used for data are modulated, and the data after will modulating is sent to low-pass filter unit;
Low-pass filter unit is connected between modulating unit and the up-sampling unit, is used for data are carried out LPF, and the data behind the LPF are sent to the up-sampling unit;
The up-sampling unit is connected between low-pass filter unit and the digital mixing unit, be used for data are carried out up-sampling, and the data that will pass through up-sampling is sent to the digital mixing unit;
Digital controlled oscillator links to each other with the digital mixing unit, is used to produce sinusoidal signal, and is sent to the digital mixing unit;
The digital mixing unit links to each other with up-sampling unit, digital controlled oscillator and synthesis unit, is used for will carrying out digital mixing from the data of up-sampling unit with from the sinusoidal signal of digital controlled oscillator, and the signal behind the digital mixing is sent to synthesis unit;
Synthesis unit respectively with M road sendaisle in the digital mixing unit link to each other, be used for the signal behind the digital mixing on M road is synthesized baseband signal, and baseband signal be sent to radio frequency unit;
Radio frequency unit links to each other with synthesis unit, is used for baseband signal is carried out carrier modulation, and the signal after the carrier modulation is sent from eating dishes without rice or wine.
This radio station comprises that further bearing capacity confirms the unit, and loading capability confirms that the unit links to each other with string and conversion unit, is used for confirming that the M road sends the Data-carrying ability of each sendaisle of sendaisle and be sent to also conversion unit of string.
Said receiver module comprises: radio frequency unit, N road receive path and the conversion unit of going here and there, wherein, N road receive path is parallel be connected radio frequency unit and and go here and there between the conversion unit, every road receive path structure is identical.Every road receive path comprises: digital controlled oscillator, digital mixing unit, downsampling unit, low-pass filter unit and demodulating unit; Wherein,
Radio frequency unit respectively with N road receive path in the digital mixing unit link to each other, be used to receive data, and data be sent to the digital mixing unit on each road in the receive path of N road respectively from eating dishes without rice or wine;
Digital controlled oscillator links to each other with the digital mixing unit, is used to produce sinusoidal signal, and is sent to the digital mixing unit;
The digital mixing unit links to each other with radio frequency unit, digital controlled oscillator and downsampling unit, is used for will carrying out digital mixing from the data of radio frequency unit with from the sinusoidal signal of digital controlled oscillator, and the signal behind the digital mixing is sent to downsampling unit;
Downsampling unit is connected between digital mixing unit and the low-pass filter unit, be used for data are carried out down-sampling, and the data that will pass through down-sampling is sent to low-pass filter unit;
Low-pass filter unit is connected between downsampling unit and the demodulating unit, is used for data are carried out LPF, and the data behind the LPF are sent to demodulating unit;
Demodulating unit be connected low-pass filter unit and and go here and there between the conversion unit, be used for data are carried out demodulation, and the data after the demodulation be sent to and go here and there conversion unit;
And the string conversion unit respectively with N road receive path in demodulating unit link to each other, the data transaction that is used for the N road is walked abreast is the data of one tunnel serial.
A kind of data transmission method, this method comprises process of transmitting and receiving course,
Process of transmitting comprises: parallel data of sending on M the sendaisle, receiving course comprises: the data on the parallel receive N receive path, wherein, M and N are the positive integer greater than 1.
The method of the data on the said parallel transmission M sendaisle comprises:
A, convert one tunnel serial data into M road parallel data, and data are sent to each sendaisle respectively according to the Data-carrying ability of each sendaisle;
B, handle as follows at each sendaisle:
B1, data are modulated;
B2, to through the modulation after data carry out LPF;
B3, the data behind LPF are carried out up-sampling;
B3, to carrying out digital mixing through the up-sampling data with from the sinusoidal signal of digital controlled oscillator;
C, the signal behind the digital mixing on M road is synthesized baseband signal;
D, baseband signal is carried out carrier modulation, and the signal after the carrier modulation is sent from eating dishes without rice or wine.
Further comprise before the steps A: the Data-carrying ability of confirming each sendaisle in the sendaisle of M road.
The method of the data on the said parallel receive N receive path comprises:
A, receive, and data are sent to each receive path in the receive path of N road respectively from the data of eating dishes without rice or wine;
B, handle as follows at each receive path:
B1, carry out digital mixing to data with from the sinusoidal signal of digital controlled oscillator;
B2, the signal behind the digital mixing is carried out down-sampling;
B3, the data through down-sampling are carried out LPF;
B4, the data through LPF are carried out demodulation;
Data transaction after C, the demodulation that the N road is parallel is the data of one tunnel serial.
According to technical scheme provided by the present invention, the transfer of data platform can walk abreast and send the data on M the sendaisle, the data on also can a parallel receive N receive path; Like this; Single main website or slave station can be supported a plurality of passages simultaneously, and a main website can receive the data of the slave station transmission of a plurality of accesses simultaneously, and a main website also sends data to a plurality of slave stations simultaneously; Suppose that a main website can support N receive path, the efficient that then receives data rises to original N doubly.Thus it is clear that,, can improve data transmission efficiency according to multi-channel data transmission radio station provided by the present invention and data transmission method thereof.
Description of drawings
Fig. 1 is the transfer of data radio station transmission network sketch map of prior art.
Fig. 2 is the structural representation of the sending module of a kind of multi-channel data transmission radio station provided by the present invention.
Fig. 3 is the structural representation of the receiver module of a kind of multi-channel data transmission radio station provided by the present invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, scheme according to the invention is done to specify further.
Multi-channel data transmission radio station provided by the present invention comprises sending module and receiver module, and wherein, sending module is used for parallel data of sending on M the passage, and receiver module is used for the data on the parallel receive N passage, and wherein, M and N are the positive integer greater than 1.
Below, respectively sending module and receiver module are described in detail.
Fig. 2 is the structural representation of the sending module of a kind of multi-channel data transmission radio station provided by the present invention.As shown in Figure 2; Sending module comprises: string and conversion unit 201, M road sendaisle, synthesis unit 207 and radio frequency unit 208; Wherein, M road sendaisle is parallel to be connected between string and conversion unit 201 and the synthesis unit 207, and every road sendaisle structure is identical.Every road sendaisle comprises: modulating unit 202, low-pass filter unit 203, up-sampling unit 204, digital mixing unit 205 and digital controlled oscillator 206.
String and conversion unit 201 respectively with M road sendaisle in modulating unit 202 link to each other, be used for converting one tunnel serial data into data that the M road walks abreast, and every circuit-switched data be sent to the modulating unit 202 on this road respectively according to the Data-carrying ability of each passage.
It is said that the Data-carrying ability of each passage can be calculated according to the factors such as quantity, network idle condition of failing of each passage, concrete computational methods can be with reference to related content of the prior art.String and conversion unit 201 can be changed according to the Data-carrying ability of calculating each good passage in advance; The Data-carrying ability also can be calculated according to actual conditions in real time; Then sending module can comprise further that bearing capacity confirms unit (scheming not shown); Bearing capacity confirms that the unit links to each other with string and conversion unit 201, is used for confirming the Data-carrying ability of M road each sendaisle of sendaisle and is sent to string and conversion unit 201.
Modulating unit 202 is connected between string and conversion unit 201 and the low-pass filter unit 203, be used for data are modulated, and the data after will modulating is sent to low-pass filter unit 203.
Single channel transfer of data of the prior art radio station also comprises the modulating unit that is used for the data modulation, and modulating unit 202 shown in Figure 2 is identical with the function of modulating unit of the prior art.
Low-pass filter unit 203 is connected between modulating unit 202 and the up-sampling unit 204, is used for data are carried out LPF, and the data behind the LPF are sent to up-sampling unit 204.
Therefore band external leakage for anti-stop signal need, need carry out LPF with signal controlling in a narrow subband bandwidth.The concrete grammar of LPF can be with reference to existing multiple LPF method in the prior art, and the present invention is unqualified to the concrete grammar of LPF.
Up-sampling unit 204 is connected between low-pass filter unit 203 and the digital mixing unit 205, be used for data are carried out up-sampling, and the data that will pass through up-sampling is sent to digital mixing unit 205.
For follow-up base band data that can synthetic wideband; Need make the data of each passage all reach higher sample frequency; Behind up-sampling, data can reach predefined higher sample frequency, and the concrete numerical value of predefined sample frequency is determined on a case-by-case basis.
Digital controlled oscillator 206 links to each other with digital mixing unit 205, is used to produce sinusoidal signal, and is sent to digital mixing unit 205.
So far, introduction finishes to sending module, need to prove, the concrete value of M can other factors be determined by hardware capabilities, can adjust according to actual conditions.
Below, receiver module is described in detail, receiving course and process of transmitting are reciprocal.
Fig. 3 is the structural representation of the receiver module of a kind of multi-channel data transmission radio station provided by the present invention.As shown in Figure 3, receiver module comprises: radio frequency unit 301, N road receive path and the conversion unit 307 of going here and there, wherein, N road receive path is parallel be connected radio frequency unit 301 and and go here and there between the conversion unit 307, every road receive path structure is identical.Every road receive path comprises: digital controlled oscillator 302, digital mixing unit 303, downsampling unit 304, low-pass filter unit 305 and demodulating unit 306.
Digital controlled oscillator 302 links to each other with digital mixing unit 303, is used to produce sinusoidal signal, and is sent to digital mixing unit 303.
Behind down-sampling, the sample frequency of data drops to the sample frequency of base band.
Low-pass filter unit 305 is connected between downsampling unit 304 and the demodulating unit 306, is used for data are carried out LPF, and the data behind the LPF are sent to demodulating unit 306.
Through LPF, select the signal of required frequency spectrum.
Demodulating unit 306 be connected low-pass filter unit 305 and and go here and there between the conversion unit 307, be used for data are carried out demodulation, and the data after the demodulation be sent to and go here and there conversion unit 307.
Single channel transfer of data of the prior art radio station also comprises the demodulating unit that is used for the data demodulation, and demodulating unit 306 shown in Figure 3 is identical with the function of demodulating unit of the prior art.
And string conversion unit 307 respectively with N road receive path in demodulating unit 306 link to each other, the data transaction that is used for the N road is walked abreast is the data of one tunnel serial.
So far, introduction finishes to receiver module, need to prove, the concrete value of N can other factors be determined by hardware capabilities, can adjust according to actual conditions.
Based on above-mentioned radio station, a kind of data transmission method provided by the present invention comprises process of transmitting and receiving course.
Process of transmitting comprises the steps:
Steps A, convert one tunnel serial data into M road parallel data, and data are sent to each sendaisle respectively according to the Data-carrying ability of each sendaisle;
Step B, handle as follows at each sendaisle:
Step B1, data are modulated;
Step B2, to through the modulation after data carry out LPF;
Step B3, the data behind LPF are carried out up-sampling;
Step B3, to carrying out digital mixing through the up-sampling data with from the sinusoidal signal of digital controlled oscillator;
Step C, the signal behind the digital mixing on M road is synthesized baseband signal;
Step D, baseband signal is carried out carrier modulation, and the signal after the carrier modulation is sent from eating dishes without rice or wine.
Further comprise before the steps A: the Data-carrying ability of confirming each sendaisle in the sendaisle of M road.
Receiving course comprises the steps:
Steps A, receive, and data are sent to each receive path in the receive path of N road respectively from the data of eating dishes without rice or wine;
Step B, handle as follows at each receive path:
Step B1, carry out digital mixing to data with from the sinusoidal signal of digital controlled oscillator;
Step B2, the signal behind the digital mixing is carried out down-sampling;
Step B3, the data through down-sampling are carried out LPF;
Step B4, the data through LPF are carried out demodulation;
Data transaction after step C, the demodulation that the N road is parallel is the data of one tunnel serial.
The content of method part can repeat no more with reference to the introduction of Fig. 2 and device shown in Figure 3 part here.
To sum up, in the present invention, the transfer of data platform can walk abreast and send the data on M the sendaisle; Data on also can a parallel receive N receive path, like this, single main website or slave station can be supported a plurality of passages simultaneously; A main website can receive the data of the slave station transmission of a plurality of accesses simultaneously; A main website also sends data to a plurality of slave stations simultaneously, supposes that a main website can support N receive path, and the efficient that then receives data rises to original N doubly.Thus it is clear that,, can improve data transmission efficiency according to multi-channel data transmission radio station provided by the present invention and data transmission method thereof.
In addition; The common application scenarios of multi-channel data transmission radio station provided by the present invention and data transmission method is an intermediate frequency; Adopt technical scheme of the present invention can make a plurality of receive paths or transmission channel data the intermediate frequency polymerization with separate, and share the radio frequency unit in a broadband.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a multi-channel data transmission radio station is characterized in that, this radio station comprises sending module and receiver module, wherein,
Sending module is used for parallel data of sending on M the sendaisle, and receiver module is used for the data on the parallel receive N receive path, and wherein, M and N are the positive integer greater than 1.
2. radio station according to claim 1 is characterized in that, said sending module comprises: string and conversion unit, M road sendaisle, synthesis unit and radio frequency unit; Wherein, M road sendaisle is parallel to be connected between string and conversion unit and the synthesis unit, and every road sendaisle structure is identical, and every road sendaisle comprises: modulating unit, low-pass filter unit, up-sampling unit, digital mixing unit and digital controlled oscillator; Wherein
String and conversion unit respectively with M road sendaisle in modulating unit link to each other, be used for converting one tunnel serial data into data that the M road walks abreast, and every circuit-switched data be sent to the modulating unit on this road respectively according to the Data-carrying ability of each sendaisle;
Modulating unit is connected between string and conversion unit and the low-pass filter unit, be used for data are modulated, and the data after will modulating is sent to low-pass filter unit;
Low-pass filter unit is connected between modulating unit and the up-sampling unit, is used for data are carried out LPF, and the data behind the LPF are sent to the up-sampling unit;
The up-sampling unit is connected between low-pass filter unit and the digital mixing unit, be used for data are carried out up-sampling, and the data that will pass through up-sampling is sent to the digital mixing unit;
Digital controlled oscillator links to each other with the digital mixing unit, is used to produce sinusoidal signal, and is sent to the digital mixing unit;
The digital mixing unit links to each other with up-sampling unit, digital controlled oscillator and synthesis unit, is used for will carrying out digital mixing from the data of up-sampling unit with from the sinusoidal signal of digital controlled oscillator, and the signal behind the digital mixing is sent to synthesis unit;
Synthesis unit respectively with M road sendaisle in the digital mixing unit link to each other, be used for the signal behind the digital mixing on M road is synthesized baseband signal, and baseband signal be sent to radio frequency unit;
Radio frequency unit links to each other with synthesis unit, is used for baseband signal is carried out carrier modulation, and the signal after the carrier modulation is sent from eating dishes without rice or wine.
3. radio station according to claim 2; It is characterized in that; This radio station comprises that further bearing capacity confirms the unit, and loading capability confirms that the unit links to each other with string and conversion unit, is used for confirming that the M road sends the Data-carrying ability of each sendaisle of sendaisle and be sent to also conversion unit of string.
4. radio station according to claim 3; It is characterized in that said receiver module comprises: radio frequency unit, N road receive path and the conversion unit of going here and there, wherein; N road receive path is parallel be connected radio frequency unit and and go here and there between the conversion unit, every road receive path structure is identical.Every road receive path comprises: digital controlled oscillator, digital mixing unit, downsampling unit, low-pass filter unit and demodulating unit; Wherein,
Radio frequency unit respectively with N road receive path in the digital mixing unit link to each other, be used to receive data, and data be sent to the digital mixing unit on each road in the receive path of N road respectively from eating dishes without rice or wine;
Digital controlled oscillator links to each other with the digital mixing unit, is used to produce sinusoidal signal, and is sent to the digital mixing unit;
The digital mixing unit links to each other with radio frequency unit, digital controlled oscillator and downsampling unit, is used for will carrying out digital mixing from the data of radio frequency unit with from the sinusoidal signal of digital controlled oscillator, and the signal behind the digital mixing is sent to downsampling unit;
Downsampling unit is connected between digital mixing unit and the low-pass filter unit, be used for data are carried out down-sampling, and the data that will pass through down-sampling is sent to low-pass filter unit;
Low-pass filter unit is connected between downsampling unit and the demodulating unit, is used for data are carried out LPF, and the data behind the LPF are sent to demodulating unit;
Demodulating unit be connected low-pass filter unit and and go here and there between the conversion unit, be used for data are carried out demodulation, and the data after the demodulation be sent to and go here and there conversion unit;
And the string conversion unit respectively with N road receive path in demodulating unit link to each other, the data transaction that is used for the N road is walked abreast is the data of one tunnel serial.
5. data transmission method, this method be applied to it is characterized in that in the radio station as claimed in claim 1 that this method comprises process of transmitting and receiving course,
Process of transmitting comprises: parallel data of sending on M the sendaisle, receiving course comprises: the data on the parallel receive N receive path, wherein, M and N are the positive integer greater than 1.
6. method according to claim 5 is characterized in that, the method for the data on the said parallel transmission M sendaisle comprises:
A, convert one tunnel serial data into M road parallel data, and data are sent to each sendaisle respectively according to the Data-carrying ability of each sendaisle;
B, handle as follows at each sendaisle:
B1, data are modulated;
B2, to through the modulation after data carry out LPF;
B3, the data behind LPF are carried out up-sampling;
B3, to carrying out digital mixing through the up-sampling data with from the sinusoidal signal of digital controlled oscillator;
C, the signal behind the digital mixing on M road is synthesized baseband signal;
D, baseband signal is carried out carrier modulation, and the signal after the carrier modulation is sent from eating dishes without rice or wine.
7. method according to claim 6 is characterized in that, further comprises before the steps A: the Data-carrying ability of confirming each sendaisle in the sendaisle of M road.
8. method according to claim 7 is characterized in that, the method for the data on the said parallel receive N receive path comprises:
A, receive, and data are sent to each receive path in the receive path of N road respectively from the data of eating dishes without rice or wine;
B, handle as follows at each receive path:
B1, carry out digital mixing to data with from the sinusoidal signal of digital controlled oscillator;
B2, the signal behind the digital mixing is carried out down-sampling;
B3, the data through down-sampling are carried out LPF;
B4, the data through LPF are carried out demodulation;
Data transaction after C, the demodulation that the N road is parallel is the data of one tunnel serial.
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| CN102916718A (en) * | 2012-10-31 | 2013-02-06 | 成都航天通信设备有限责任公司 | Two-channel station, station network and station network communication method |
| CN105721092A (en) * | 2014-12-04 | 2016-06-29 | 西安航天动力试验技术研究所 | Method for improving time synchronization precision of distributed system by means of resampling technology |
| CN106788469A (en) * | 2015-11-23 | 2017-05-31 | 国家电网公司 | A kind of digital intermediate frequency framework of multichannel data radio station |
| CN111510173A (en) * | 2020-04-24 | 2020-08-07 | 中国人民解放军火箭军工程大学 | Multichannel radio station received signal separation method and device and analog radio station host |
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Application publication date: 20120314 |