KR100500815B1 - Test and verification Equipment for Ultra wideband communication - Google Patents

Abstract

The invention of the experiment and verification system for the design of broadband communication system, which is being actively researched at home and abroad, and the broadband communication system with the host and host for sending sound and image data or signals and digital data patterns in the host system. An interface unit for providing a serial communication means for the interface between the interface unit, the data input through the interface unit in the memory and the stored data to the high-speed memory through the coding unit or selection and control unit to generate a serial data conversion and high-speed pulse Digital control unit for controlling, control input and status display unit for displaying and controlling control and setting status of broadband communication system, impulse generator unit for generating output high-speed pulse with fine impulse, low power A test and verification system for the design of a broadband communication system consisting of an amplifier unit for controlling the variable voltage and the operating function of the output to adjust the final gain, and an antenna unit for connecting the amplified impulse to the antenna through the matching filter unit will be.

Description

Test and verification equipment for ultra wideband communication

Recent communication technologies are developing and transforming from narrowband communication to broadband communication. This broadband communication can achieve a relatively high detection probability and stability of operation, and has an advantage of having a relatively low power consumption.

Ultra Wideband (UWB) technology is an innovative next-generation wireless transmission technology that achieves a high data transfer rate of 100 Mbps, which exceeds 54 Mbps of IEEE802.11a, and consumes less than 100 mW, keeping up with the low power characteristics of Bluetooth. .

Broadband communications (UWB) technology, as the name suggests, processes data using high frequency bandwidths in the several GHz range. The data rate exceeds 100Mbps, but power consumption is only a few tens of mW. This is roughly a tenth to a hundredth as compared to the power consumption of cellular phones or wireless LANs.

The factors that enable faster system operation are that cellular phones and wireless LANs use frequency bands ranging from a few tens of MHz, while UWB utilizes a frequency bandwidth of several GHz up to 100 to 1000 times higher. Because there is. Using this frequency bandwidth, data transfer rates of 500 Mbps to 1 Gbps can be achieved even with existing technologies. However, with existing wireless technologies, achieving this level of speed is nearly impossible.

Wideband communication (UWB) technology uses a transmit / receive pulse method, which is a relatively simple data transmission structure, to achieve significantly lower power consumption than existing technologies. Each pulse used to transmit and receive data consists of microwaves ranging from 1ns up to hundreds of ps.

In addition, the transmit power of each pulse is also very low at 10nW / MHz. This is below the level of electromagnetic noise produced by the equipment. On the other hand, because data transmission and reception are discontinuous, data reach is limited, but circuit consumption can be greatly reduced.

UWB technology was originally developed for military use in the United States, and until recently, UWB technology has not been actively utilized. Another reason is that UWB technology uses very high frequency bandwidth, which is why GPS (Global) The concern was that it could interfere with narrowband communications systems such as Positioning Systems and cellular phones.

However, the Federal Communications Commission (FCC), which is currently in charge of managing US communications systems, approves an application report for consumer products of UWB technology prepared by the office of Engineering and Technology on February 4, 2002 for over four years. It was.

Using broadband technology (UWB) technology will likely remove many of the frequency constraints of existing wireless communication systems. In order to prevent mutual interference, a guard band with a signal frequency separation function, which has not been used until recently, can also be used as a frequency band, and research for improving the efficiency of using the frequency to a considerable level is ongoing.

The basic principle of an impulse wireless communication system is Larry W. United States Patent Nos. 4,641,317, filed February 3, 1987, 4,813,057, filed March 14, 1989, 4,979,186, 18, 1990, filed by Larry W. Fullerton. Fully described in a series of patents, including dated), 5,363,108 (registered on November 8, 1994) and 4,743,906 (registered on May 10, 1988). Techniques related to impulse wireless communication systems include U.S. Patent Nos. 5,677,927 (registered September 14, 1997), 5,687,169 (registered November 11, 1997) and J. Frederick Larrick, Jr., filed by Fullerton et al. US Patent No. 6,026,125 (February 15, 2000), filed by US Patent No. 2000-0035813 (published June 26, 2000), filed by Hellberger Richards-Bilger, and Patent Applied by Richard James L et al. -0085755 (published September 7, 2001), by Larry W. Sufficient information on broadband communication systems and communication methods, such as Japanese Patent No. 1997-7006662 (published November 3, 1997) and Japanese Patent No. 1999-008094 (January 25, 1999), filed by Larry W. Fullerton et al. It is explained. However, the above-described technologies suggest basic functions of fixed-band communication or fixed-configuration technology, although it is possible to perform a given wide-band communication, but it is necessary to set parameters according to a user's intention, provide signals, etc. There is a disadvantage that it is not possible to change the. In other words, the shape and repetition of the pulse, the method of applying pseudo random number (PN) code components, the method for large-capacity high-speed data transmission and spreading from the host, the method for applying various codings for stable data transmission, There is a limitation that does not have a configuration that can selectively apply data processing methods, various problem analysis that can occur when proceeding to ASIC.

The technical problem to be achieved by the present invention has been a lot of research related to UWB communication at home and abroad, and since the United States has been used for military purposes since the United States for a long time, most of the technology is limited to the United States patent, domestic broadband There is a need to develop specific alternatives for communications (UWB) technology. The technical task of the present invention for most of the standardized and fixed configuration technology is to apply various signals and implement various processing methods before applying the already formalized technology. An experimental and verification system for communication system design.

For this purpose, the shape and repetition of the pulse, the application of pseudo random number (PN) code components, the method of high speed data transmission from the host and the method of frequency spreading, the application of various codings for stable data transmission, the high speed data Design of communication system that enables new design of most components such as processing method, analysis of various problems that can occur when proceeding to ASIC, and design of communication system that enables the verification of applied experiments by specifically hardwareizing broadband communication (UWB) technology There is a technical challenge to construct an experimental and verification system for the system.

Example

1 is a block diagram of an embodiment illustrating an experiment and verification system for designing a communication system according to the present invention.

The experiment and verification system for the design of the communication system includes a host unit 100, an interface unit 200, a digital controller 300, a control input and status display unit 400, an impulse generator 500, an amplifier 600, The antenna unit 700 is configured.

First, the system is a pulse width, repetition period, pseudo random number (PN) which is a pulse configuration requirement for the pulse generator 380 of the digital controller 300 to enable broadband communication (UWB) from the host unit 100. There is a period for setting a code, a pulse generation method for the shape of an impulse for the impulse generating unit 500, and a PN setting unit 140, and a data pattern for inputting and setting a pattern of a series of data. Setting unit 110, sound and image data selection unit 120 for setting and transmitting sound and image data through a host, sound and image input device selection unit 130 for selecting sound and image devices from an external device ), Which receives audio and video data as inputs, sets the data in a predetermined frame unit, and determines the standard of the data according to the serial communication means of the serial communication means interface unit 180. Coding unit 160, coding for the safe transmission of data and data restoration of the receiving system in the selection unit 170 to match the characteristics of the data processed by the unit 150, the period and PN setting unit and the controller 150, The unit 160 may be modified and tailored to fit the characteristics of data to be transmitted by the experiment and verification system for communication system design, and coding on separate hardware is applied by the interface unit 200 and the digital controller 300. If so, the flow of data to the serial communication means interface unit 180 may be changed. RS232C, USB, IEEE1394, etc. commonly used serial communication means interface unit is responsible for the interface, it is possible to facilitate the data transmission from low to high speed and is configured to output serial data as a result of the output.

The interface unit 200 used to construct an experiment and verification system for designing a communication system is configured to transmit serial data received from the host unit 100 through the serial communication unit transceiver 210 to the PHY unit 220 of the serial communication unit. The data is inputted to the memory 250 through the PHY interface unit 230 of the serial communication means and the control of the memory controller 240 through the PHY interface unit 230, and also the digital controller 300 The data is output. The PHY unit 220 and the PHY interface unit 230 of the serial communication unit are not used depending on the type of the serial communication unit, but are used as a controller that defines a protocol so that the data of the serial communication unit transceiver 210 is stored in the memory control unit ( It may be stored in the memory 250 under the control of 240.

The digital control unit 300 used to construct an experiment and verification system for designing a communication system transmits parallel data input through the interface unit 200 to the memory 320 through the control of the memory control unit 310. If necessary, hardware coding may be applied through the coding unit 330. The memory control unit may select whether to apply coding to the data received by the memory control unit 310 through the selection unit 340. 360 may be stored in the memory 350.

The coding unit 330 performs most of the functions of the host unit 100 separately by signals of the control inputs input through the control input and the status display unit 400 in addition to functions for safe data transmission and reception of data in the system. It can be configured to do so. In this case, even if the host unit 100 and the interface unit 200 do not exist, the function as pure hardware can be implemented.

The memory 350 of the digital controller 300 stores data including information such as a period of a pulse and a setting data pattern value of a pseudo random number (PN) code. If necessary, data to which coding is applied by the coding unit 330 may exist. Data stored in the memory 350 is converted into serial data by the serial data conversion and pulse generator 370. At this time, the clock to synchronize the data is multiplied so that the data is converted into high speed serial data. Since the serial data output of the data is already processed enough for the impulse generation of the impulse generator 500, the material of the experimental and verification data for the broadband communication system design can be completely configured.

4-A is a diagram illustrating a serial data conversion and pulse generation unit of the digital control unit 300. Data and a clock are input from the memory 350 to the register unit 371. In this case, the input of the reference frequency is provided. It is used as a synchronous clock for reading and writing the memory 373 by the high speed clock passing through the frequency multiplying part 372 through the register part 371, and the serial data is completed through the multi-channel selecting part 373. In this case, a fine pulse waveform is output as the output waveform.

5 is a control input and status display unit 400, most of the functions of the host unit 100 without the host unit 100 and the interface unit 200 when necessary for the experiment and verification system for the communication system design It is an apparatus part for making it processable.

The controller 410 periodically monitors the current state and setting state from the digital controller 300 and outputs the same to the display unit 430. The controller 410 stores the control input in the memory 420 and, if necessary, It can carry out functions that can be automatically preserved even when no power is supplied. The control input unit 440 may set, change, and store various setting contents performed by the host unit 100 according to the setting and modification of the display unit 430, and may be operated by an experiment and verification system for designing a communication system. To be able. The memory 420 temporarily stores the state values of the digital controller and periodically updates the state values so that the memory 420 can be displayed on the display unit 430. The memory 420 is the last data set by using an auxiliary memory (ROM). The ability to store states or multiple types of state settings can enhance the control inputs of experimental and verification systems for communication system design.

FIG. 6 is a diagram illustrating an impulse generating unit 500, and may receive various pulse outputs of the digital control unit 300 as inputs and generate various kinds of impulses according to a hardware configuration method, and apply an element for generating an impulse. Silver transistors, diode resistors, capacitors, inductors, etc. can be prepared in various ways.

6-A is a circuit diagram showing an embodiment using a transistor, in which the output of the digital control unit 300 is repeated in a period of 1 ms, and the pulse has an output of 10 Hz and an amplitude of 600 Hz. In this case, it can be seen that about 1.2 Hz impulse was generated.

When a high speed pulse is generated and transferred to the impulse generator 500, a high speed impulse can be generated using a differential circuit using a resistor and a capacitor.

Therefore, if the pulse of 200ps is transmitted to the impulse generator, the output can also produce an impulse having an impulse width of 200ps.

7 is a portion that is responsible for amplifying the impulse at the output of the impulse from the impulse generator 500, the first broadband amplifier unit 620, the second broadband amplifier unit 630, the third broadband amplifier unit 640 The fourth wideband amplifier unit 650 is configured to be controlled by the voltage and operation control unit 670 to selectively adjust its gain. The low pass filter 610 and the high pass filter 660 may be designed and operated as a function of a constant band pass filter by a data pattern and a pulse period by control and setting.

FIG. 8 shows the matching filter unit 710 for operating the impulse signal amplified by the amplifier as a filter matched with the antenna, and has less fading, and the log magnitude may appear higher at an appropriate frequency used for broadband communication. The antenna unit 720 is designed such that the group delay in the corresponding frequency band is constant.

Since the group delay plays an important role in stably transmitting a series of data, it is necessary to design the antenna unit 720 sufficiently considering this part.

In view of the fact that most of the broadband communication (UWB) technology is limited to software simulation, the present invention provides an experiment and verification system for designing a communication system capable of hardware design and specific verification.

The present invention provides a method of applying a pulse shape and repeated cycle, a pseudo random number (PN) code component, a large-capacity high-speed data transmission method and a frequency spreading method, and a stable data transmission within a standard satisfying broadband communication. The present invention provides an experiment and verification system for a communication system design having a configuration that can selectively apply various coding applications, a high-speed data processing method, and various problem analysis that may occur when the ASIC is advanced.

Therefore, the configuration of the broadband communication system set by the user can be enabled. Its main function is to provide an alternative to the design method for variable hardware, enabling specific configurations and various kinds of processing for broadband communications.

In addition, the present invention has an effect of setting a parameter according to the user's intention, and by varying the signal provided according to the user's intention to design a communication system for the experimental verification of the base technology and the source technology.

1 is a block diagram of a broadband communication system and includes an exemplary communication system for use in the present invention.

FIG. 2 is a block diagram illustrating a host unit in the block diagram of FIG. 1. FIG.

3 is a block diagram of an exemplary interface portion for use with the present invention.

4 is a block diagram of a digital control unit according to the present invention.

4-A is an exemplary block diagram of the serial data conversion and pulse generator of FIG. 4.

5 is a block diagram of a state output and a control input unit according to the present invention.

6 is a block diagram of an impulse generator according to the present invention;

6-a is an exemplary block diagram of the impulse generator of FIG.

7 is a block diagram of an amplifier according to the present invention.

8 is a block diagram of an antenna unit according to the present invention.

Claims (7)

For the experiment and verification for communication system design, the host unit 100, the interface unit 200, the digital control unit 300, the control input and status display unit 400, the impulse generator 500, the amplifier 600 In the broadband communication (UWB) system consisting of an antenna unit 700, The pulse width, the repetition period, the setting of the pseudo random number (PN) code, and the pulse shape for the impulse shape for the impulse generator 500 are the pulse configuration requirements for the pulse generator 380 of the digital controller 300. A period and PN setting unit 140 for setting a generation method and the like; A data pattern setting unit 110 for inputting and setting a pattern of a series of data; A sound and image data selection unit 120 for setting and transmitting sound and image data through a host; An audio and video input device selector 130 for selecting an audio and video device from an external device; A controller 150 which receives sound and image data as inputs and sets the data in a predetermined frame unit and determines a standard of data according to the serial communication means of the serial communication means interface unit 180; A coding unit 160 for safe transmission of data and data restoration of a reception system, etc. in the selection unit 170 so as to match the characteristics of the period and the PN setting unit and the data processed by the control unit 150; Experiment and verification system for the communication system design, characterized in that it comprises a host unit 100 The method of claim 1, The coding unit 160 performs coding on the host with respect to data to be transmitted, and is ignored when coding on separate hardware is applied in the interface unit 200 and the digital control unit 300, and the serial communication unit interface unit ( 180) the flow of data can be varied,  Experiment and verification system for the communication system design, characterized in that configured to perform most of the functions of the host unit 100 by the signal of the control input input through the control input and status display unit 400 The method of claim 1, The interface unit outputs data from the host unit as serial data by a transmission method such as RS232C, USB, IEEE1394,  The serial data received from the host unit 100 is transferred to the PHY unit 220 of the serial communication unit through the serial communication unit transceiver 210, Data is input to the memory 250 from the transmitted PHY unit 220 data of the serial communication means under the control of the memory control unit 240 through the PHY interface unit 230, The PHY unit 220 and the PHY interface unit 230 of the serial communication unit are not used depending on the type of the serial communication unit, but are used as a controller that defines a protocol so that the data of the serial communication unit transceiver 210 is stored in the memory control unit ( Experiment and verification system for communication system design, characterized in that stored in the memory 250 under the control of 240 The method of claim 1, The digital control unit 300 stores the parallel data input through the interface unit 200 to the memory 320 under the control of the memory control unit 310, and if necessary, hardware coding is performed through the coding unit 330. Communication can be applied, characterized in that the data received by the memory control unit 310 through the selection unit 340 to select whether to apply the coding is stored in the memory 350 through the memory control unit 360 Experiment and verification system for system design The method of claim 1, The memory 350 of the digital controller 300 stores data containing information such as a pulse period and a setting data pattern value of a pseudo random number (PN) code. Data to which the coding is applied may be stored by the coding unit 330. Data stored in the memory 350 is converted to serial data by the serial data conversion and pulse generator 370, Data and a clock are input from the memory 350 to the register unit 371, and at this time, the memory (via the register unit 371 by a high-speed clock passing through the frequency multiplier 372 by input of the provided reference frequency). 373) is used as a synchronization clock for reading and writing, and the serial data is completed through the multi-channel selector 373, and the output waveform at this time outputs a fine pulse waveform so that the impulse generator 500 generates an impulse. Experiment and verification system for communication system design, characterized by providing processed data for The method of claim 1, The control input and status display unit 400 periodically monitors the current state and setting state from the digital control unit 300 and outputs them to the display unit 430, and stores the control input in the memory 420 and supplies power when necessary. Control unit 410 that can be automatically stored even if it is not supplied; A control input unit 440 for setting, changing, and storing various setting contents performed by the host unit 100 according to the setting and modification contents of the display unit 430; Temporarily stores the state values of the digital control unit and periodically the control input unit 440 is a data storage place to update the state values to be displayed on the display unit 430, it is set using an auxiliary memory (ROM), etc. Experiment and verification system for communication system design, characterized in that the memory 420 configured to store the last state or various types of state setting values The method of claim 1, The amplifying unit is responsible for amplifying the impulse at the output of the impulse from the impulse generating unit 500, and includes a first broadband amplifier unit 620, a second broadband amplifier unit 630, a third broadband amplifier unit 640, and a third amplifier. 4 The wideband amplifier unit 650 is controlled by the voltage and operation control unit 670 to selectively adjust its gain, the data pattern by the control and setting through the low pass filter 610 and high pass filter 660 And an experiment and verification system for a communication system design, characterized in that it is configured to perform a function of a constant band pass filter by a pulse period or the like.