CN106357280A - Signal transmitting method and signal transmitting device - Google Patents
Signal transmitting method and signal transmitting device Download PDFInfo
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- CN106357280A CN106357280A CN201510409770.6A CN201510409770A CN106357280A CN 106357280 A CN106357280 A CN 106357280A CN 201510409770 A CN201510409770 A CN 201510409770A CN 106357280 A CN106357280 A CN 106357280A
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- Prior art keywords
- signal
- module
- radiofrequency signal
- sent
- baseband signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
Abstract
The invention discloses a signal transmitting method. The signal transmitting method includes: receiving a baseband signal and transmitting the baseband signal to a radio-frequency analog conversion module used for integrating a quadrature modulator with a numerically-controlled oscillator; sampling the baseband signal through the radio-frequency analog conversion module according to the default rate; converting the baseband signal according to sampling results and outputting a radio-frequency signal covering dual frequency bands or multiple frequency bands. The invention further discloses a signal transmitting device. By the arrangement, the baseband signal is directly converted into the radio-frequency signal through the radio-frequency analog conversion module, area of a printed-circuit board is reduced as compared to converting the baseband signal into the radio-frequency signal through an intermediate-frequency filter and a modulator, and cost of the device is lowered.
Description
Technical field
The present invention relates to communication technical field, more particularly, to a kind of signal transmitting method and device.
Background technology
At present, commercial lte (long term evolution, the Long Term Evolution) network in the whole world ten
Distribution reaches, numerous operators face how to process 2g/3g/lte multiple types, a difficult problem that multiple frequency range coexists.
Operator, for newly-built and dilatation network, finds position to install in limited site space and sky space of planes
Base station or rru (radio remote unit, Remote Radio Unit), how this allows for using limited
Site space and reduce terrace quantity and become the focus of operator, device miniaturization compact design and super
Broadband technology becomes the demand of client's concern.
And how current ultra wideband communication system, if it is intended to covering two-band or multiple frequency range, can adopt
Different baseband signals is modulated into the radiofrequency signal of different frequency range, Ran Houyong by different quadrature modulators
These radiofrequency signal combinings are become a ultra-broadband signal by combiner.Due to this mode can exist as follows
Problem: (1) adopts zero intermediate frequency scheme, two frequency range image signals interact；(2) adopt Low Medium Frequency
Scheme can be avoided image signal and interact, but second harmonic can disturb transmitting frequency range.And the party
The link of the digital-to-analogue conversion+quadrature modulator+combiner framework of case is more complicated, leads to realize the program
The area of printed circuit board is big, thus rru volume is big, considerably increases equipment production, logistics, stock
And safeguard etc. cost.
Content of the invention
Present invention is primarily targeted at providing a kind of signal transmitting method and device it is intended to electricity is printed in reduction
The area of road plate, reduces equipment cost.
For achieving the above object, the invention provides a kind of signal transmitting method, comprise the following steps:
Receive baseband signal, and described baseband signal is sent to integrated quadrature modulator and digital control shakes
Swing the radio frequency D/A converter module of device；
Described baseband signal is sampled by scheduled rate by described radio frequency D/A converter module；
According to sampled result, described baseband signal is changed, output covers two-band or multiple frequency range
Radiofrequency signal.
Preferably, described according to sampled result, described baseband signal is changed, output cover two-band
Or include after the radiofrequency signal of multiple frequency ranges:
The described radiofrequency signal of output is sent to filtration module be filtered；
Radiofrequency signal after after filtering is sent to RF Amplifier Module be amplified；
Radiofrequency signal after amplifying is sent to numerical control attenuation module and carries out signal attenuation；
Radiofrequency signal after decay is sent to power amplifier module and carries out power amplification, so that antenna is by work(
Radiofrequency signal after rate is amplified is launched.
Preferably, described scheduled rate is adjusted according to different situations, including 4915.2mhz.
Preferably, the described radiofrequency signal covering two-band includes 1805mhz～2170mhz, described covers
The radiofrequency signal covering multiple frequency ranges includes 2010mhz～2025mhz and 2.3ghz～2.4ghz.
A kind of additionally, for achieving the above object, present invention also offers sender unit, comprising:
Receiver module, for receiving baseband signal, and described baseband signal is sent to integrated orthogonal modulation
The radio frequency D/A converter module of device and numerically-controlled oscillator；
Sampling module, for pressing scheduled rate to described baseband signal by described radio frequency D/A converter module
Sampled；
Output module, for being changed to described baseband signal according to sampled result, output covers double frequency
Section or the radiofrequency signal of multiple frequency range.
Preferably, described sender unit also includes:
Signal filtering module, is filtered for the described radiofrequency signal of output is sent to filtration module；
Signal amplification module, is carried out for the radiofrequency signal after after filtering is sent to RF Amplifier Module
Amplify；
Signal attenuation module, carries out signal for the radiofrequency signal after amplifying is sent to numerical control attenuation module
Decay；
Transmitter module, carries out power amplification for the radiofrequency signal after decay is sent to power amplifier module,
So that the radiofrequency signal after power amplification is launched by antenna.
Preferably, described scheduled rate is adjusted according to different situations, including 4915.2mhz.
Preferably, the described radiofrequency signal covering two-band includes 1805mhz～2170mhz, described covers
The radiofrequency signal covering multiple frequency ranges includes 2010mhz～2025mhz and 2.3ghz～2.4ghz.
The embodiment of the present invention after radio frequency D/A converter module receives baseband signal, by default frequency pair
Baseband signal is sampled, and to be changed to baseband signal according to sampled result, output covers two-band
Or the radiofrequency signal of multiple frequency ranges.Baseband signal can be directly converted to by this radio frequency D/A converter module
Baseband signal is converted to radiofrequency signal with respect to intermediate-frequency filter and modulator by radiofrequency signal, contracting
Subtract the area of printed circuit board.Meanwhile, it is capable to output covers two-band or the radiofrequency signal of multiband,
Decrease the quantity of rru, thus reducing equipment cost.
Brief description
Fig. 1 is the schematic flow sheet of signal transmitting method first embodiment of the present invention；
Fig. 2 is the schematic flow sheet of signal transmitting method second embodiment of the present invention；
Fig. 3 is the high-level schematic functional block diagram of sender unit first embodiment of the present invention；
Fig. 4 is the high-level schematic functional block diagram of sender unit second embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will be done further in conjunction with the embodiments referring to the drawings
Explanation.
Specific embodiment
It should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit
Determine the present invention.
As shown in figure 1, showing a kind of present invention signal transmitting method first embodiment.This embodiment
Signal transmitting method comprises the following steps:
Step s10, reception baseband signal, and described baseband signal is sent to integrated quadrature modulator sum
Word controls the radio frequency D/A converter module of oscillator；
The signal transmitting method of the embodiment of the present invention is mainly used in ultra-wide band communication system and signal is sent out
Penetrate, this system includes rru, rru includes radio frequency D/A converter module.Wherein, radio frequency digital-to-analogue conversion mould
Block includes radio frequency digital to analog converter, and radio frequency digital to analog converter is internally integrated quadrature modulator and digital control shakes
Swing device.Radio frequency digital to analog converter can be realized for baseband signal being converted to radiofrequency signal.Radio frequency digital-to-analogue conversion
The data input pin of device using having Double Data Rate Low Voltage Differential Signal interface, for receiving baseband signal.
The internal interpolated multiple of radio frequency digital to analog converter is flexibly arranged according to actually used situation, can be divided into many
The interpolation of individual gear.Field programmable gate array (field- in the PLD of system
Programmable gate array, fpga) after module produces baseband signal, baseband signal is sent to penetrating
Frequency D/A converter module.
Step s20, described baseband signal is adopted by scheduled rate by described radio frequency D/A converter module
Sample；
After radio frequency D/A converter module receives baseband signal, triggering clock module produces clock signal, with
As reference signal during sampling.Radio frequency D/A converter module is sampled to baseband signal by scheduled rate
Process, to export radiofrequency signal.This scheduled rate can be 4915.2mhz, also dependent on concrete condition
Flexibly arrange.
Step s30, according to sampled result, described baseband signal is changed, output cover two-band or
The radiofrequency signal of multiple frequency ranges.
Because the sampling rate of radio frequency digital to analog converter is higher, higher frequency therefore can be exported, directly
Connect and obtain radiofrequency signal.Above-mentioned radio frequency D/A converter module can direct root under the speed of 4915.2mhz
According to sampled result, baseband signal is changed, output covers the radiofrequency signal of two-band or multiple frequency range.
The present embodiment cover two-band radiofrequency signal include 1805mhz～2170mhz, cover 1.8g and
Two frequency ranges of 2.1g, 1.8g frequency range is 1805mhz～1880mhz, and 2.1g frequency range is 2110mhz～2170
mhz.The present embodiment not only respectively support gsm (global system for mobile communication,
Global system for mobile communications), umts (universal mobile telecommunications system, lead to
With GSM) and tri- kinds of standards of lte, at the same time it can also support being combined with each other of these three standards.
The described radiofrequency signal covering multiple frequency ranges includes 1850mhz～1990mhz, 2010mhz～2025mhz
And 2.3ghz～2.4ghz.It should be noted that above-mentioned covering two-band and the value covering multiband
Other frequency ranges can be substituted for, do not limit the present invention.
The embodiment of the present invention is directly converted baseband signals into as radio frequency letter by radio frequency D/A converter module
Number it is not necessary to frequency conversion again, eliminate the devices such as intermediate-frequency filter and modulator, decrease transmitting chain
The quantity of upper device, thus reducing the area of printed circuit board, reduces the volume of rru.Meanwhile,
The radiofrequency signal that single transmission channel sends predeterminated frequency scope can be realized, two or many can be covered
Individual frequency range, and support multiple types, thus decreasing the quantity of rru, save the cost of equipment.
Further, as shown in Fig. 2 based on above-described embodiment it is proposed that signal transmitting method of the present invention
Second embodiment, can comprise the following steps that after above-mentioned steps s30 in this embodiment
Step s40, the described radiofrequency signal of output is sent to filtration module and is filtered；
Above-mentioned rru also includes filtration module, RF Amplifier Module, numerical control attenuation module and power amplifier module.
In order to ensure the logical inband signaling Insertion Loss of numeral top distortion and flatness, what radio frequency D/A converter module exported penetrates
Module is filtered processing frequency signal demand after filtering, and the wave filter in this filtration module mainly filters number
Image signal during mould conversion, second harmonic signal and clock signal components etc..The type of this wave filter can
Arrange as the case may be and flexibly, the bandpass filter being made up of inductance and electric capacity it is also possible to
It is low pass filter or high-pass filter.
Step s50, the radiofrequency signal after after filtering is sent to RF Amplifier Module it is amplified；
Step s60, the radiofrequency signal after amplifying is sent to numerical control attenuation module and carries out signal attenuation；
Step s70, the radiofrequency signal after decay is sent to power amplifier module and carries out power amplification, for
Radiofrequency signal after power amplification is launched by antenna.
Above-mentioned radiofrequency signal is sent directly into RF Amplifier Module after being filtered by filtration module, to pass through
Radio frequency amplifier is amplified to filtered radiofrequency signal.Radiofrequency signal after amplifying is transferred into
Numerical control attenuation module carries out signal attenuation.Radiofrequency signal after decay enters back into power amplifier module and carries out power puts
Greatly, after power amplifier module, radiofrequency signal is launched by antenna.
Accordingly, as shown in figure 3, proposing a kind of present invention sender unit first embodiment.This is real
The sender unit applying example includes:
Receiver module 100, for receiving baseband signal, and described baseband signal is sent to collection is orthogonal tune
The radio frequency D/A converter module of device processed and numerically-controlled oscillator；
The signal transmitting method of the embodiment of the present invention is mainly used in ultra-wide band communication system and signal is sent out
Penetrate, this system includes rru, rru includes radio frequency D/A converter module.Wherein, radio frequency digital-to-analogue conversion mould
Block includes radio frequency digital to analog converter, and radio frequency digital to analog converter is internally integrated quadrature modulator and digital control shakes
Swing device.Radio frequency digital to analog converter can be realized for baseband signal being converted to radiofrequency signal.Radio frequency digital-to-analogue conversion
The data input pin of device using having Double Data Rate Low Voltage Differential Signal interface, for receiving baseband signal.
The internal interpolated multiple of radio frequency digital to analog converter is flexibly arranged according to actually used situation, can be divided into many
The interpolation of individual gear.Field programmable gate array (field- in the PLD of system
Programmable gate array, fpga) after module produces baseband signal, receiver module 100 is by base band
Signal sends to radio frequency D/A converter module.
Sampling module 200, believes to described base band for pressing scheduled rate by described radio frequency D/A converter module
Number sampled；
After radio frequency D/A converter module receives baseband signal, triggering clock module produces clock signal, with
As reference signal during sampling.Scheduled rate is pressed by radio frequency D/A converter module by sampling module 200
Sampling processing is carried out to baseband signal, to export radiofrequency signal.This scheduled rate can be 4915.2mhz,
Flexibly arrange also dependent on concrete condition.
Output module 300, for being changed to described baseband signal according to sampled result, output covers double
Frequency range or the radiofrequency signal of multiple frequency range.
Because the sampling rate of radio frequency digital to analog converter is higher, therefore higher frequency can be exported, can
To directly obtain radiofrequency signal.Above-mentioned radio frequency D/A converter module is under the speed of 4915.2mhz, permissible
Output module 300 is called directly according to sampled result, baseband signal to be changed, output covers two-band
Or the radiofrequency signal of multiple frequency ranges.The radiofrequency signal that the present embodiment covers two-band includes 1805
Mhz～2170mhz, covers two frequency ranges of 1.8g and 2.1g, and 1.8g frequency range is 1805mhz～1880
Mhz, 2.1g frequency range is 2110mhz～2170mhz.The present embodiment not only supports gsm (global respectively
System for mobile communication, global system for mobile communications), umts (universal
Mobile telecommunications system, UMTS) and tri- kinds of standards of lte, with
When, being combined with each other of these three standards can also be supported.The described radiofrequency signal covering multiple frequency ranges includes
1850mhz～1990mhz, 2010mhz～2025mhz and 2.3ghz～2.4ghz.It should be noted that
The value of above-mentioned covering two-band and covering multiband can be substituted for other frequency ranges, does not limit this
Bright.
The embodiment of the present invention is directly converted baseband signals into as radio frequency letter by radio frequency D/A converter module
Number it is not necessary to frequency conversion again, eliminate the devices such as intermediate-frequency filter and modulator, decrease transmitting chain
The quantity of upper device, thus reducing the area of printed circuit board (PCB), reduces the volume of rru.Meanwhile,
The radiofrequency signal that single transmission channel sends predeterminated frequency scope can be realized, two or many can be covered
Individual frequency range, and support multiple types, thus decreasing the quantity of rru, save the cost of equipment.
Further, as shown in figure 4, being based on above-described embodiment, above-mentioned signal transmitting dress in this embodiment
Put and also include:
Signal filtering module 400, is filtered for the described radiofrequency signal of output is sent to filtration module
Ripple；
Above-mentioned rru also includes filtration module, RF Amplifier Module, numerical control attenuation module and power amplifier module.
In order to ensure that numeral top distortion leads to inband signaling Insertion Loss and flatness, signal filtering module 400 is by radio frequency number
The radiofrequency signal of mould modular converter output is sent to filtration module and is filtered processing, in this filtration module
Wave filter mainly filters image signal during digital-to-analogue conversion, second harmonic signal and clock signal components etc..
The type of this wave filter can be arranged as the case may be and flexibly, the filter being made up of inductance and electric capacity
The bandpass filter of ripple device or low pass filter or high-pass filter.
Signal amplification module 500, enters for the radiofrequency signal after after filtering is sent to RF Amplifier Module
Row amplifies；
Signal attenuation module 600, carries out letter for the radiofrequency signal after amplifying is sent to numerical control attenuation module
Number decay；
Transmitter module 700, puts for being sent to power amplifier module and carrying out power the radiofrequency signal after decay
Greatly, so that the radiofrequency signal after power amplification is launched by antenna.
After above-mentioned radiofrequency signal is filtered by filtration module, it is sent directly into by signal amplification module 500
RF Amplifier Module, to be amplified to filtered radiofrequency signal by radio frequency amplifier.Through amplifying
Radiofrequency signal afterwards is sent to numerical control attenuation module by signal attenuation module 600 and carries out signal attenuation.Decay
Radiofrequency signal afterwards is sent to power amplifier module by transmitter module 700 again and carries out power amplification, through power amplifier mould
After block, radiofrequency signal is launched by antenna.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every
The equivalent structure made using description of the invention and accompanying drawing content or equivalent flow conversion, or directly or
Connect and be used in other related technical fields, be included within the scope of the present invention.
Claims (8)
1. a kind of signal transmitting method is it is characterised in that described signal transmitting method includes:
Receive baseband signal, and described baseband signal is sent to integrated quadrature modulator and digital control shakes
Swing the radio frequency D/A converter module of device；
Described baseband signal is sampled by scheduled rate by described radio frequency D/A converter module；
According to sampled result, described baseband signal is changed, output covers two-band or multiple frequency range
Radiofrequency signal.
2. signal transmitting method as claimed in claim 1 it is characterised in that described according to sampled result
Described baseband signal is changed, output is wrapped after covering two-band or the radiofrequency signal of multiple frequency range
Include:
The described radiofrequency signal of output is sent to filtration module be filtered；
Radiofrequency signal after after filtering is sent to RF Amplifier Module be amplified；
Radiofrequency signal after amplifying is sent to numerical control attenuation module and carries out signal attenuation；
Radiofrequency signal after decay is sent to power amplifier module and carries out power amplification, so that antenna is by work(
Radiofrequency signal after rate is amplified is launched.
3. signal transmitting method as claimed in claim 2 it is characterised in that described scheduled rate according to
Different situations are adjusted, including 4915.2mhz.
4. signal transmitting method as claimed any one in claims 1 to 3 is it is characterised in that described
The radiofrequency signal covering two-band includes 1805mhz～2170mhz, the radio frequency of the multiple frequency range of described covering
Signal includes 2010mhz～2025mhz and 2.3ghz～2.4ghz.
5. a kind of sender unit is it is characterised in that described sender unit includes:
Receiver module, for receiving baseband signal, and described baseband signal is sent to integrated orthogonal modulation
The radio frequency D/A converter module of device and numerically-controlled oscillator；
Sampling module, for pressing scheduled rate to described baseband signal by described radio frequency D/A converter module
Sampled；
Output module, for being changed to described baseband signal according to sampled result, output covers double frequency
Section or the radiofrequency signal of multiple frequency range.
6. sender unit as claimed in claim 5 is it is characterised in that described sender unit
Also include:
Signal filtering module, is filtered for the described radiofrequency signal of output is sent to filtration module；
Signal amplification module, is carried out for the radiofrequency signal after after filtering is sent to RF Amplifier Module
Amplify；
Signal attenuation module, carries out signal for the radiofrequency signal after amplifying is sent to numerical control attenuation module
Decay；
Transmitter module, carries out power amplification for the radiofrequency signal after decay is sent to power amplifier module,
So that the radiofrequency signal after power amplification is launched by antenna.
7. sender unit as claimed in claim 6 it is characterised in that described scheduled rate according to
Different situations are adjusted, including 4915.2mhz.
8. the sender unit as any one of claim 5 to 7 is it is characterised in that described
The radiofrequency signal covering two-band includes 1805mhz～2170mhz, the radio frequency of the multiple frequency range of described covering
Signal includes 2010mhz～2025mhz and 2.3ghz～2.4ghz.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510409770.6A CN106357280A (en) | 2015-07-13 | 2015-07-13 | Signal transmitting method and signal transmitting device |
| PCT/CN2015/092212 WO2017008403A1 (en) | 2015-07-13 | 2015-10-19 | Signal transmission method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510409770.6A CN106357280A (en) | 2015-07-13 | 2015-07-13 | Signal transmitting method and signal transmitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106357280A true CN106357280A (en) | 2017-01-25 |
Family
ID=57756767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510409770.6A Pending CN106357280A (en) | 2015-07-13 | 2015-07-13 | Signal transmitting method and signal transmitting device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106357280A (en) |
| WO (1) | WO2017008403A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102098255A (en) * | 2009-12-15 | 2011-06-15 | 华为技术有限公司 | Method, device and base station for signal combination clipping |
| US8923370B2 (en) * | 2012-05-03 | 2014-12-30 | Telefonaktiebolaget L M Ericsson (Publ) | Radio communication apparatus method |
| US8855174B2 (en) * | 2012-08-10 | 2014-10-07 | Alcatel Lucent | Frequency agile multiband transmitter using a radio frequency digital to analog converter |
-
2015
- 2015-07-13 CN CN201510409770.6A patent/CN106357280A/en active Pending
- 2015-10-19 WO PCT/CN2015/092212 patent/WO2017008403A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| WO2017008403A1 (en) | 2017-01-19 |
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Application publication date: 20170125 |