CN102892127B - Simulating apparatus and method for receiving 2 frequency shift keying (2fsk) data by simulating global system for mobile communications (GSM) channel - Google Patents
Simulating apparatus and method for receiving 2 frequency shift keying (2fsk) data by simulating global system for mobile communications (GSM) channel Download PDFInfo
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- CN102892127B CN102892127B CN201210349250.7A CN201210349250A CN102892127B CN 102892127 B CN102892127 B CN 102892127B CN 201210349250 A CN201210349250 A CN 201210349250A CN 102892127 B CN102892127 B CN 102892127B
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Abstract
The invention discloses a simulating apparatus for receiving 2 frequency shift keying (2fsk) data by a simulating global system for mobile communications (GSM) channel, which comprises a random data sending module, a GSM voice demodulating module, a 2fsk demodulating module, a 2fsk parameter setting module, a data storing module and a data comparing module; furthermore, the invention discloses a simulating method for receiving 2 frequency shift keying (2fsk) data by the simulating GSM channel, which comprises the steps of: 1, starting the 2fsk parameter setting module; 2, starting the data comparing module; 3, starting the data storing module; 4, starting the 2fsk demodulating module; 5, starting the GSM voice demodulating module; 6, starting the random data generating module; and 7, comparing an inputted digital signal by the data comparing module, and outputting an error code rate. Through the simulating apparatus and method for receiving the 2fsk data by the GSM channel, the design speed is accelerated and the research cost is reduced, and performance optimization and statistics become convenient; and the modulating technology is constantly improved and the error code rate is recorded to determine an optimal modulating parameter.
Description
Technical field
The present invention relates to a kind of simulator and the method that emulate use GSM channel reception 2fsk data.
Background technology
GSM is the abbreviation of Global System For Mobile Communications.The digital mobile communication standard worked out by ETSI ETSI.GSM is the abbreviation of global system for mobile communications (Global System for Mobile communications).Its air interface adopts tdma.Since the mid-90 puts it into commercial operation, adopted more than 100 countries by the whole world.The equipment of GSM standard occupies Present Global cellular mobile communication equipment Market more than 80%.
Due to instructions for use, need to use the channel of GSM voice call to carry out transfer of data.Embodiment has the voice data of data-signal in the microphone circuit input access modulation of mobile phone, export termination pick out demodulating equipment in the handset circuitry of mobile phone, and this demodulating equipment can demodulate voice channel and pass the data-signal of coming.2fsk and Binary Frequency Shift Keying, a kind of information transmitting methods of digital massage is transmitted exactly by year wave frequency, namely control to carry a wave frequency with the digital massage that transmits, this method migration speed is fast, waveform good, stability is high and be easy to realize, therefore is widely used.Also 2fsk modulated data signal can be used when the channel of GSM voice call carries out transfer of data, but to using the early stage of GSM transmission 2fsk data message in design process, need the parameter of scientifically optimized design voice communication as far as possible, avoid the later stage to change circuit hardware design and optimum configurations continually.
Summary of the invention
For reducing, the circuit design of 2fsk data and the later stage work time of parameter adjustment being received to GSM, the invention provides a kind of simulator and the method that emulate use GSM channel reception 2fsk data.
The invention provides a kind of simulator emulated by GSM channel reception 2fsk data, comprise random data sending module, GSM voice demodulation module, 2fsk demodulation module, 2fsk parameter setting module, data memory module and data comparison module;
Random data sending module: be connected with GSM voice demodulation module and data memory module, produce the digital signal comprising random data information and send to data memory module, and the digital signal of generation is converted into GSM voice signal and sends to GSM voice demodulation module;
GSM voice demodulation module: be connected with random data sending module and 2fsk demodulation module, is converted into 2fsk analog signal by the GSM voice signal that random data sending module sends and sends to 2fsk demodulation module;
2fsk demodulation module: be connected with data memory module, is converted into digital signal by the 2fsk analog signal of acceptance and sends to data memory module;
2fsk parameter setting module: be connected with 2fsk demodulation module, arranges the demodulation parameter of 2fsk;
Data memory module: store the digital signal of 2fsk demodulation module transmission and send to data comparison module;
Data comparison module: the digital signal that the digital signal send random data sending module and data memory module send compares, and calculates the error rate.
Preferably, 2fsk parameter setting module also comprises input terminal, and user is by input terminal input 2fsk modulation parameter.
Concrete, random data sending module also comprises 2fsk modulation module and GSM voice modulation module, the digital signal produced at random is first converted into 2fsk analog signal by 2fsk modulation module, then is GSM voice information signal by GSM voice modulation module converter.
The invention still further relates to a kind of emulation mode emulated by GSM channel reception 2fsk data, comprise the steps:
Step 1. starts 2fsk parameter setting module, arranges 2fsk parameter;
Step 2. log-on data comparison module, if do not have data to input, does not then carry out data and compares;
Step 3. log-on data memory module;
Step 4. starts 2fsk demodulation module, if do not receive 2fsk analog signal, then exporting is zero;
Step 5. starts GSM voice demodulation module;
Step 6. starts random data generation module, starts to produce random data, output digit signals and GSM voice signal;
Step 7. data comparison module compares the digital signal of input, output error rate.
Concrete, described step 6, before output GSM voice signal, also comprises the modulation step to the random digital signal produced:
Digital signal is converted into 2fsk analog signal by step 61.;
2fsk analog signal is converted into GSM voice signal by step 62..
Concrete, it is characterized in that: each step described utilizes MATLAB language programming realization on computers.
Adopt simulator and method to receiving 2fsk data with GSM channel of the present invention, achieve the emulation to using GSM voice channel to receive 2fsk analog signal process, and calculate the error rate of signal, conveniently can change the implementation of hardware circuit by optimum configurations and simulate result rapidly.Accelerate desin speed, reduce R&D costs, convenient function optimization simultaneously and statistics, by constantly improving modulation technique and recording the error rate, determine optimum modulation parameter.
Accompanying drawing explanation
Fig. 1 illustrates that emulation GSM channel of the present invention receives the simulator each several part annexation schematic diagram of 2fsk data;
Fig. 2 illustrates that emulation GSM channel of the present invention receives the step schematic diagram of the emulation mode of 2fsk data.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
The invention provides a kind of simulator emulated by GSM channel reception 2fsk data, comprise random data sending module, GSM voice demodulation module, 2fsk demodulation module, 2fsk parameter setting module, data memory module and data comparison module;
Random data sending module: be connected with GSM voice demodulation module and data memory module, produce the digital signal comprising random data information and send to data memory module, and the digital signal of generation is converted into GSM voice signal and sends to GSM voice demodulation module;
GSM voice demodulation module: be connected with random data sending module and 2fsk demodulation module, is converted into 2fsk analog signal by the GSM voice signal that random data sending module sends and sends to 2fsk demodulation module;
2fsk demodulation module: be connected with data memory module, is converted into digital signal by the 2fsk analog signal of acceptance and sends to data memory module;
2fsk parameter setting module: be connected with 2fsk demodulation module, arranges the demodulation parameter of 2fsk;
Data memory module: store the digital signal of 2fsk demodulation module transmission and send to data comparison module;
Data comparison module: the digital signal that the digital signal send random data sending module and data memory module send compares, and calculates the error rate.
The effect of random data sending module is the random data that generation user will send, the digital signal data memory module comprising this random data.Issue 2fsk modulation module and
Wherein, the workflow of random data sending module is:
(1) random data that will send for the user emulated is produced by the temporal frequency of setting after powering on;
(2) in certain moment, the digital signal comprising random data is sent to data memory module; And this digital signal is converted into GSM voice signal and sends to GSM voice demodulation module;
(3) random data that the user for emulating will send is regenerated;
(4) step (2) is repeated
The effect of GSM voice demodulation module the GSM voice signal received is demodulated to 2fsk analog signal send to 2fsk demodulation module.
The workflow of GSM voice demodulation module is:
(1) the GSM voice signal received;
(2) GSM voice signal is demodulated to 2fsk analog signal;
(3) 2fsk analog signal is sent to 2fsk demodulation module.
The effect of 2fsk demodulation module is the 2fsk analog signal received, and this 2fsk analog signal is demodulated to numerical data, is supplied to data memory module.
The workflow of 2fsk demodulation module is:
(1) the 2fsk analog signal that GSM voice demodulation module sends is received;
(2) 2fsk analog signal is demodulated to numerical data;
(3) data memory module is supplied to.
The effect of 2fsk parameter setting module is that customer parameter arranges interface, and 2fsk demodulation parameter is supplied to 2fsk demodulation module.
The workflow of 2fsk parameter setting module is:
(1) customer parameter that customer parameter arranges interface is received;
(2) customer parameter is supplied to 2fsk demodulation module.
The user data received is recorded in the effect of data memory module, and these data are recorded in file, provides corresponding file to make comparisons use to other modules, is supplied to user data comparison module.
The workflow of data memory module is:
(1) data that user data generation module sends are received;
(2) in the internal memory of the file record received;
(3) in the file of the file record received;
(4) data-interface is provided to use to other modules.
The data that receive and the data before sending are compared in the effect of data comparison module, calculate the error rate and other statisticss.
The workflow of data comparison module is:
(1) numerical data that random data sending module sends is received;
(2) data that data memory module receives from 2fsk demodulation module are received;
(3) error rate is calculated;
(4) other statisticss of user's setting are calculated.
Preferably, 2fsk parameter setting module also comprises input terminal, and user is by input terminal input 2fsk modulation parameter.
Concrete, random data sending module also comprises 2fsk modulation module and GSM voice modulation module, the digital signal produced at random is first converted into 2fsk analog signal by 2fsk modulation module, then is GSM voice information signal by GSM voice modulation module converter.
The invention still further relates to a kind of emulation mode emulated by GSM channel reception 2fsk data, comprise the steps:
Step 1. starts 2fsk parameter setting module, arranges 2fsk parameter;
Step 2. log-on data comparison module, if do not have data to input, does not then carry out data and compares;
Step 3. log-on data memory module;
Step 4. starts 2fsk demodulation module, if do not receive 2fsk analog signal, then exporting is zero;
Step 5. starts GSM voice demodulation module;
Step 6. starts random data generation module, starts to produce random data, output digit signals and GSM voice signal;
Step 7. data comparison module compares the digital signal of input, output error rate.
Concrete, described step 6, before output GSM voice signal, also comprises the modulation step to the random digital signal produced:
Digital signal is converted into 2fsk analog signal by step 61.;
2fsk analog signal is converted into GSM voice signal by step 62..
Concrete, it is characterized in that: each step described utilizes MATLAB language programming realization on computers.
MATLAB is the main high-tech computing environment in the face of scientific algorithm, visual and programming of interactive issued by mathworks company of the U.S..Many powers such as the modeling and simulation of its numerical analysis, matrix computations, science data are visual and nonlinear dynamic system are integrated in a wieldy windowing environment.MATLAB is simple and easy to use, and disposal ability is strong.
Adopt simulator and method to receiving 2fsk data with GSM channel of the present invention, achieve the emulation to using GSM voice channel to receive 2fsk analog signal process, and calculate the error rate of signal, conveniently can change the implementation of hardware circuit by optimum configurations and simulate result rapidly.Accelerate desin speed, reduce R&D costs, convenient function optimization simultaneously and statistics, by constantly improving modulation technique and recording the error rate, determine optimum modulation parameter.
Previously described is each preferred embodiment of the present invention; design parameter in described embodiment and embodiment is only the invention proof procedure in order to clear statement inventor; and be not used to limit scope of patent protection of the present invention; scope of patent protection of the present invention is still as the criterion with its claims; the equivalent structure change that every utilization specification of the present invention and accompanying drawing content are done, in like manner all should be included in protection scope of the present invention.
Claims (6)
1. emulate the simulator receiving 2fsk data with GSM channel, comprise random data sending module, GSM voice demodulation module, 2fsk demodulation module, 2fsk parameter setting module, data memory module and data comparison module;
Random data sending module: be connected with GSM voice demodulation module and data memory module, produce the digital signal comprising random data information and send to data memory module, and the digital signal of generation is converted into GSM voice signal and sends to GSM voice demodulation module;
GSM voice demodulation module: be connected with random data sending module and 2fsk demodulation module, is converted into 2fsk analog signal by the GSM voice signal that random data sending module sends and sends to 2fsk demodulation module;
2fsk demodulation module: be connected with data memory module, is converted into digital signal by the 2fsk analog signal of acceptance and sends to data memory module;
2fsk parameter setting module: be connected with 2fsk demodulation module, arranges the demodulation parameter of 2fsk;
Data memory module: store the digital signal of 2fsk demodulation module transmission and send to data comparison module;
Data comparison module: the digital signal that the digital signal send random data sending module and data memory module send compares, and calculates the error rate.
2. emulation receives the simulator of 2fsk data with GSM channel as claimed in claim 1, it is characterized in that: described 2fsk parameter setting module also comprises input terminal, and user is by input terminal input 2fsk modulation parameter.
3. emulation receives the simulator of 2fsk data with GSM channel as claimed in claim 1, it is characterized in that: described random data sending module also comprises 2fsk modulation module and GSM voice modulation module, the digital signal produced at random is first converted into 2fsk analog signal by 2fsk modulation module, then is GSM voice information signal by GSM voice modulation module converter.
4. emulate the emulation mode receiving 2fsk data with GSM channel, comprise the steps:
Step 1. starts 2fsk parameter setting module, arranges 2fsk parameter;
Step 2. log-on data comparison module, if do not have data to input, does not then carry out data and compares;
Step 3. log-on data memory module;
Step 4. starts 2fsk demodulation module, if do not receive 2fsk analog signal, then exporting is zero;
Step 5. starts GSM voice demodulation module;
Step 6. starts random data generation module, starts to produce random data, output digit signals and GSM voice signal;
Step 7. data comparison module compares the digital signal of input, output error rate.
5. emulation as claimed in claim 4 receives an emulation mode for 2fsk data with GSM channel, it is characterized in that: described step 6, before output GSM voice signal, also comprises the modulation step to the random digital signal produced:
Digital signal is converted into 2fsk analog signal by step 61.;
2fsk analog signal is converted into GSM voice signal by step 62..
6. the GSM channel of the emulation as described in claim 4 or 5 receives an emulation mode for 2fsk data, it is characterized in that: each step described utilizes MATLAB language programming realization on computers.
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| CN201210349250.7A CN102892127B (en) | 2012-09-20 | 2012-09-20 | Simulating apparatus and method for receiving 2 frequency shift keying (2fsk) data by simulating global system for mobile communications (GSM) channel |
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| CN201210349250.7A CN102892127B (en) | 2012-09-20 | 2012-09-20 | Simulating apparatus and method for receiving 2 frequency shift keying (2fsk) data by simulating global system for mobile communications (GSM) channel |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1866941A (en) * | 2005-12-12 | 2006-11-22 | 傅岳 | Modulation/demodulation process and apparatus for transmitting data with PSTN channel using GSM voice channel |
| CN101794370A (en) * | 2010-04-09 | 2010-08-04 | 深圳市远望谷信息技术股份有限公司 | Method and device for remotely testing receiver sensitivity of radio frequency identification reader |
| CN102075470A (en) * | 2011-01-13 | 2011-05-25 | 清华大学 | (Gauss) frequency shift keying ((G)FSK) digital demodulation device and method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1866941A (en) * | 2005-12-12 | 2006-11-22 | 傅岳 | Modulation/demodulation process and apparatus for transmitting data with PSTN channel using GSM voice channel |
| CN101794370A (en) * | 2010-04-09 | 2010-08-04 | 深圳市远望谷信息技术股份有限公司 | Method and device for remotely testing receiver sensitivity of radio frequency identification reader |
| CN102075470A (en) * | 2011-01-13 | 2011-05-25 | 清华大学 | (Gauss) frequency shift keying ((G)FSK) digital demodulation device and method |
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