CN102868466B - Simulation device and method for transmitting 2fsk data through simulated global system for mobile communications (GSM) channel - Google Patents
Simulation device and method for transmitting 2fsk data through simulated global system for mobile communications (GSM) channel Download PDFInfo
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- CN102868466B CN102868466B CN201210349296.9A CN201210349296A CN102868466B CN 102868466 B CN102868466 B CN 102868466B CN 201210349296 A CN201210349296 A CN 201210349296A CN 102868466 B CN102868466 B CN 102868466B
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Abstract
The invention discloses a simulation device for transmitting 2fsk data through a simulated global system for mobile communications (GSM) channel. The simulation device comprises a user data generating module, a 2fsk modulation module, a GSM voice modulation module, a user data storage module and a 2fsk parameter setting module. The invention also relates to a simulation method for transmitting 2fsk data through the simulated GSM channel, which comprises the following steps of: 1, starting the 2fsk parameter setting module; 2, starting the GSM voice modulation module; 3, starting the 2fsk modulation module; 4, starting the user data generating module and a data comparison module; 5, recording and storing a random signal; and 6, comparing and calculating a bit error rate. According to the simulation device and the simulation method for transmitting 2fsk data through the simulated GSM channel, the design speed is increased, the research and development cost is reduced, the performance is conveniently optimized and counted, the modulation technology is continuously perfected, the error rate is recorded, and the optimized modulation parameter is determined.
Description
Technical field
The present invention relates to a kind of simulator and the method that emulate use GSM channel transmission 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 sent to GSM, the invention provides a kind of simulator and the method that emulate use GSM channel transmission 2fsk data.
Technical scheme of the present invention is as follows: a kind of simulator emulated by GSM channel transmission 2fsk data, comprises user data generation module, 2fsk modulation module, GSM voice modulation module, storage of subscriber data module, 2fsk parameter setting module, wherein
User data generation module: with 2fsk modulation module and storage of subscriber data model calling, the random data of generation is sent to simultaneously 2fsk modulation module and storage of subscriber data module;
2fsk modulation module: with user data generation module, GSM voice modulation module is connected with 2fsk parameter setting module,
Receive the random data that storage of subscriber data module sends, after being modulated into 2fsk analog signal, send to GSM voice modulation module, during modulation 2fsk analog signal, modulate according to the modulation parameter that 2fsk parameter setting module sends;
GSM voice modulation module: receive the 2fsk analog signal that 2fsk modulation module sends, and convert 2fsk analog signal to GSM voice signal;
Storage of subscriber data module: receive the random data of user data generation module generation and store;
2fsk parameter setting module: 2fsk modulation parameter is set, and send to 2fsk modulation module;
Data comparison module: with storage of subscriber data module and GSM voice modulation model calling, the GSM voice signal that GSM voice modulation module is exported and is stored in the initialization in storage of subscriber data module random data relatively and calculate the error rate.
Preferably, describedly also comprise input terminal to the 2fsk parameter setting module sent with 2fsk in the simulator of data in GSM voice channel, user is by input terminal input 2fsk modulation parameter.
Concrete, the data comparison module of the described simulator to sending data in GSM voice channel with 2fsk also comprises the GSM voice demodulation module and 2fsk demodulation module that are connected to each other, is that 2fsk analog signal is converted into numerical data again by first for the GSM voice messaging of acceptance demodulation.
The present invention also provides a kind of and emulates the emulation mode sending 2fsk data with GSM channel, comprises the steps
Step 1. starts 2fsk parameter setting module, arranges 2fsk modulation parameter;
Step 2. starts GSM voice modulation module, and when not receiving 2fsk signal, this module exports as mute state;
Step 3. starts 2fsk modulation module, and when not receiving random data, the 2fsk signal of output is zero;
Step 4. starts user data generation module, and after this module starts, the modulation of 2fsk modulation module exports 2fsk signal, and GSM voice modulation module exports voice signal; Log-on data comparison module simultaneously;
Step 5. storage of subscriber data module record random signal also stores;
The voice signal that step 6. pair GSM voice modulation module exports and the random signal that storage of subscriber data module stores compare, and calculate the error rate.
Preferably, described emulation GSM channel send the random signal that stores at the voice signal exported GSM voice modulation module and storage of subscriber data module in the step 6 in the emulation mode of 2fsk data relatively before, also comprise the demodulation step of the voice signal to the output of GSM voice modulation module:
The voice signal that GSM voice modulation module exports is demodulated into 2fsk signal by step 61.;
2fsk analog signal in step 61 is demodulated into digital signal by step 62..
Concrete, each step described utilizes MATLAB language programming realization on computers.
Emulation GSM channel of the present invention is adopted to send simulator and the method for 2fsk data, achieve the emulation to using GSM voice channel to send 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 sends the simulator each several part annexation schematic diagram of 2fsk data;
Fig. 2 illustrates that emulation GSM channel of the present invention sends 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.
Kind emulation GSM channel of the present invention sends the simulator of 2fsk data, comprises user data generation module, 2fsk modulation module, GSM voice modulation module, storage of subscriber data module, 2fsk parameter setting module, wherein
User data generation module: with 2fsk modulation module and storage of subscriber data model calling, the random data of generation is sent to simultaneously 2fsk modulation module and storage of subscriber data module;
2fsk modulation module: with user data generation module, GSM voice modulation module is connected with 2fsk parameter setting module,
Receive the random data that storage of subscriber data module sends, after being modulated into 2fsk analog signal, send to GSM voice modulation module, during modulation 2fsk analog signal, modulate according to the modulation parameter that 2fsk parameter setting module sends;
GSM voice modulation module: receive the 2fsk analog signal that 2fsk modulation module sends, and convert 2fsk analog signal to GSM voice signal;
Storage of subscriber data module: receive the random data of user data generation module generation and store;
2fsk parameter setting module: 2fsk modulation parameter is set, and send to 2fsk modulation module;
Data comparison module: with storage of subscriber data module and GSM voice modulation model calling, the GSM voice signal that GSM voice modulation module is exported and is stored in the initialization in storage of subscriber data module random data relatively and calculate the error rate.
The effect of user data generation module is the random data that generation user will send, and this random data is issued 2fsk modulation module and storage of subscriber data module.
Wherein, the workflow of user data generation module is:
(1) random data that will send for the user emulated is produced by the temporal frequency of setting at once after powering on;
(2) in certain moment, data are sent to 2fsk modulation module and storage of subscriber data module;
(3) random data that the user for emulating will send is regenerated;
(4) step (2) is repeated.
Storage of subscriber data module comprises internal memory and memory, and effect is the random data that recording user will send, and this random data is stored in file, provides corresponding file to make comparisons use to data comparison module.
The workflow of storage of subscriber data module is:
(1) data that user data generation module sends are received;
(2) data received are recorded in internal memory;
(3) data received are recorded in memory;
(4) data-interface is provided to use to other modules.
The effect of 2fsk modulation module is the random data received, and this random number data is modulated into 2fsk analog signal, is supplied to GSM voice modulation module.
The workflow of 2fsk modulation module is:
(1) data that user data generation module sends are received;
(2) random number data is modulated into 2fsk analog signal;
(3) GSM voice modulation module is supplied to;
(4) data that 2fsk parameter setting module sends are received, respective change 2fsk modulation parameter.
The effect of 2fsk parameter setting module is that customer parameter arranges interface, and customer parameter is supplied to 2fsk modulation module.
The workflow of user 2fsk parameter setting module is:
(1) customer parameter that customer parameter arranges interface is received;
(2) customer parameter is supplied to 2fsk modulation module;
The effect of GSM voice modulation module is that the 2fsk analog signal that 2fsk modulation module transmits converts GSM voice to.
The workflow of GSM voice modulation module is:
(1) the 2fsk analog signal that 2fsk modulation module transmits is received;
(2) 2fsk analog signal converts GSM voice to;
(3) GSM voice are sent to data comparison module
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 user data comparison module is:
(1) the GSM voice messaging that GSM voice modulation module sends is received;
(2) data that storage of subscriber data module receives from user data generation module are received;
(3) error rate is calculated;
(4) other statisticss of user's setting are calculated.
Preferably, described 2fsk parameter setting module also comprises input terminal, and user can input 2fsk modulation parameter by input terminal.Input can be the equipment of a PC or other band display terminals and input key, facilitates user to input according to display interface.
Concrete, the data comparison module of the described simulator to sending data in GSM voice channel with 2fsk also comprises the GSM voice demodulation module and 2fsk demodulation module that are connected to each other, is that 2fsk analog signal is converted into numerical data again by first for the GSM voice messaging of acceptance demodulation.
A kind of emulation mode emulated by GSM channel transmission 2fsk data of the present invention, comprises the steps
Step 1. starts 2fsk parameter setting module, arranges 2fsk modulation parameter;
Step 2. starts GSM voice modulation module, and when not receiving 2fsk signal, this module exports as mute state;
Step 3. starts 2fsk modulation module, and when not receiving random data, the 2fsk signal of output is zero;
Step 4. starts user data generation module, and after this module starts, the modulation of 2fsk modulation module exports 2fsk signal, and GSM voice modulation module exports voice signal; Log-on data comparison module simultaneously;
Step 5. storage of subscriber data module record random signal also stores;
The voice signal that step 6. pair GSM voice modulation module exports and the random signal that storage of subscriber data module stores compare, and calculate the error rate.
Preferably, described emulation GSM channel send the random signal that stores at the voice signal exported GSM voice modulation module and storage of subscriber data module in the step 6 in the emulation mode of 2fsk data relatively before, also comprise the demodulation step of the voice signal to the output of GSM voice modulation module:
The voice signal that GSM voice modulation module exports is demodulated into 2fsk signal by step 61.;
2fsk analog signal in step 61 is demodulated into digital signal by step 62..
Concrete, 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.
Emulation GSM channel of the present invention is adopted to send simulator and the method for 2fsk data, achieve the emulation to using GSM voice channel to send 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 sending 2fsk data with GSM channel, comprise user data generation module, 2fsk modulation module, GSM voice modulation module, storage of subscriber data module, 2fsk parameter setting module, wherein
User data generation module: with 2fsk modulation module and storage of subscriber data model calling, the random data of generation is sent to simultaneously 2fsk modulation module and storage of subscriber data module;
2fsk modulation module: with user data generation module, GSM voice modulation module is connected with 2fsk parameter setting module,
Receive the random data that user data generation module sends, after being modulated into 2fsk analog signal, send to GSM voice modulation module, during modulation 2fsk analog signal, modulate according to the modulation parameter that 2fsk parameter setting module sends;
GSM voice modulation module: receive the 2fsk analog signal that 2fsk modulation module sends, and convert 2fsk analog signal to GSM voice signal;
Storage of subscriber data module: receive the random data of user data generation module generation and store;
2fsk parameter setting module: 2fsk modulation parameter is set, and send to 2fsk modulation module;
User data comparison module: with storage of subscriber data module and GSM voice modulation model calling, the GSM voice signal that GSM voice modulation module is exported and is stored in the initialization in storage of subscriber data module random data relatively and calculate the error rate.
2. as claimed in claim 1 to the simulator sending data in GSM voice channel with 2fsk, it is characterized in that: described 2fsk parameter setting module also comprises input terminal, user is by input terminal input 2fsk modulation parameter.
3., as claimed in claim 1 to the simulator sending data in GSM voice channel with 2fsk, it is characterized in that:
Described user data comparison module also comprises the GSM voice demodulation module and 2fsk demodulation module that are connected to each other, the GSM voice messaging of acceptance is first demodulated to 2fsk analog signal and is converted into numerical data again.
4. emulate the emulation mode sending 2fsk data with GSM channel, comprise the steps
Step 1. starts 2fsk parameter setting module, arranges 2fsk modulation parameter;
Step 2. starts GSM voice modulation module, and when not receiving 2fsk signal, this module exports as mute state;
Step 3. starts 2fsk modulation module, and when not receiving random data, the 2fsk signal of output is zero;
Step 4. starts user data generation module, and after this module starts, the modulation of 2fsk modulation module exports 2fsk signal, and GSM voice modulation module exports voice signal; Start user data comparison module simultaneously;
Step 5. storage of subscriber data module record random signal also stores;
The voice signal that step 6. pair GSM voice modulation module exports and the random signal that storage of subscriber data module stores compare, and calculate the error rate.
5. one kind emulates the emulation mode sending 2fsk data with GSM channel as claimed in claim 4, it is characterized in that: the random signal stored in the voice signal exported GSM voice modulation module and storage of subscriber data module in described step 6 relatively before, also comprise the demodulation step to the voice signal that GSM voice modulation module exports:
The voice signal that GSM voice modulation module exports is demodulated into 2fsk signal by step 61.;
2fsk analog signal in step 61 is demodulated into digital signal by step 62..
6. the GSM channel of the emulation as described in claim 4 or 5 sends 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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| US7487396B2 (en) * | 2004-10-15 | 2009-02-03 | Broadcom Corporation | System and method to locate and correct software errors within a protocol stack for wireless devices |
| CN2852554Y (en) * | 2005-11-22 | 2006-12-27 | 中兴通讯股份有限公司 | Wireless connective box with main processing board and wireless communication module |
| CN102075470B (en) * | 2011-01-13 | 2013-07-10 | 清华大学 | (Gauss) frequency shift keying ((G)FSK) digital demodulation device and method |
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| 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 |
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