CN107682132A - Frequency division multiplexing Parallel communication framework based on pulse UWB Terahertzs front end - Google Patents
Frequency division multiplexing Parallel communication framework based on pulse UWB Terahertzs front end Download PDFInfo
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- CN107682132A CN107682132A CN201710825067.2A CN201710825067A CN107682132A CN 107682132 A CN107682132 A CN 107682132A CN 201710825067 A CN201710825067 A CN 201710825067A CN 107682132 A CN107682132 A CN 107682132A
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- 238000004891 communication Methods 0.000 title claims abstract description 16
- RYQHXWDFNMMYSD-UHFFFAOYSA-O (1-methylpyridin-4-ylidene)methyl-oxoazanium Chemical compound CN1C=CC(=C[NH+]=O)C=C1 RYQHXWDFNMMYSD-UHFFFAOYSA-O 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 8
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 7
- 238000001228 spectrum Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 238000007493 shaping process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/06—Arrangements for supplying the carrier waves ; Arrangements for supplying synchronisation signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0004—Modulated-carrier systems using wavelets
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of frequency division multiplexing Parallel communication framework based on pulse UWB Terahertzs front end, transmitter architecture includes multiplexer, power amplifier and terahertz sources antenna, multiplexer connects parallel arrangement of input channel branch road respectively, every input channel branch road includes the pulse shaper being connected with multiplexer, and each pulse shaper is all connected with impulse generator and continuous wave source；Receiver structure includes Terahertz reception antenna, low-noise amplifier and the demultiplexer being sequentially connected, demultiplexer connects parallel arrangement of output channel branch road respectively, every output channel branch road includes the frequency mixer being connected with demultiplexer, and each frequency mixer is all connected with local oscillator generator and 4 PAM demodulation modules.The present invention proposes the modulated signal design method with reference to multi-path frequency-division duplicating, data transfer rate is further improved using both advantages on the basis of pulse ultra-broad band+Terahertz front end.
Description
Technical field
The invention belongs to microwave engineering field, is to be related to a kind of frequency based on pulse UWB Terahertzs front end in particular
Divide multiplexing Parallel communication framework.
Background technology
With the development of Inter-satellite Communication System, efficient, high-speed transmission turns into the active demand of communication system, to code check
Requirement with bandwidth is increasingly strict.For radio system provide Terahertz frequency range high bandwidth, how to design baseband signal with
Signal transacting framework supports that high-speed, highly-reliable transmission are the cores of baseband system framework.
Frequency division multiplexing (FDMA) is that total bandwidth is resolved into multiple orthogonal channels, and different terminal users takes in system
Different frequencies, they are to overlap on time and Spatial Dimension.Frequency division multiplexing is high with its Channel utilization, the multiplexing of receiving
Way is more, and branch is convenient and turns into a kind of important satellite communication.
The content of the invention
The invention aims to overcome deficiency of the prior art, there is provided before one kind is based on pulse UWB Terahertzs
The frequency division multiplexing Parallel communication framework at end, the i.e. baseband signal with reference to pulse UWB technology, Terahertz transceiver and frequency division multiplexing
Parallel communication framework.On the basis of pulse ultra-broad band+Terahertz front end, propose to combine multi-path frequency-division duplicating (FDMA) first
Modulated signal design method, further improve data transfer rate using both advantages.By the way of frequency division multiplexing, the frequency per height
All it is the modulation system of pulse ultra-broad band+Terahertz front end in band.
The purpose of the present invention is achieved through the following technical solutions.
A kind of frequency division multiplexing Parallel communication framework based on pulse UWB Terahertzs front end, including transmitter architecture and connect
Receipts machine structure, the transmitter architecture include multiplexer, power amplifier and the terahertz sources antenna being sequentially connected, institute
State multiplexer input and be connected to parallel arrangement of input channel branch road, every input channel branch road includes
The pulse shaper being connected with multiplexer, each pulse shaper are respectively connected with impulse generator and continuous
Wave source；
The receiver structure includes Terahertz reception antenna, low-noise amplifier and the demultiplexer being sequentially connected,
The demultiplexer output end is connected to parallel arrangement of output channel branch road, and every output channel branch road wraps
The frequency mixer being connected with demultiplexer is included, each frequency mixer is respectively connected with local oscillator generator and 4-PAM demodulation
Module.
The quantity of the input channel branch road is equal to the quantity of output channel branch road.
Every the input channel branch road independently transmits data, parallel processing；Every the output channel branch road is equal
Independently transmit data, parallel processing.
In transmitting terminal, every input channel branch road, 4-PAM baseband signals are passed into impulse generator, to produce four kinds
The pulse signal of different amplitudes, afterwards respectively with continuous wave source caused by different carrier frequencies terahertz signal in pulse shaping
It is mixed in device, up-converts to pulsed RF signals, be then combined by multiplexer, and put through power amplifier
Greatly, finally launched by terahertz sources antenna；In receiving terminal, the signal that Terahertz reception antenna receives is by low noise amplification
After device amplification, every output channel branch road is distributed to by demultiplexer, under being completed respectively from different local oscillation signal mixing
Frequency conversion, exported after being demodulated finally by 4-PAM.
Compared with prior art, beneficial effect caused by technical scheme is：
(1) present invention innovatively proposes a kind of Terahertz front end of combination pulse UWB technology and frequency division multiplexing, every
On the basis of one subband can realize 1-2Gbps speed, further it is superimposed using N number of subband, realizes (1-2Gbps) × N number
According to rate.In addition, this technology plays the advantage of both pulse UWB and frequency division multiplexing, the inband flatness to radio frequency part is reduced
Etc. the requirement of index, there is preferable autgmentability, support bandwidth and variable rate transmission, be further further extended to multiple access
Or distribution mode, realize single pair multi-point；
(2) present invention can make channel capacity be multiplied using frequency division multiplexing (FDMA) technology, put forward the availability of frequency spectrum
Height, and lift the rate of information throughput；
(3) anti-multipath jamming and frequency selectivity of the present invention are strong, due to data are distributed in more sub-channels, drop significantly
Character rate in low each sub-channels, so as to weaken the influence of multipath transmisstion；
(4) present invention can be expanded to relatively easily in future supports multinode transmission, or supports single channel variable data rate,
Add application flexibility.
Brief description of the drawings
Fig. 1 is the parallelization thinking figure of pulse UWB+ frequency division multiplexings；
Fig. 2 is the schematic diagram of the frequency division multiplexing Parallel communication framework of the invention based on pulse UWB Terahertzs front end；Its
In, (a) is transmitter architecture；(b) it is receiver structure；
Fig. 3 is frequency division multiplexing (FDMA) spectrum diagram.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Present invention firstly provides one kind of pulse UWB+ Terahertzs front end framework+frequency division multiplexing (FDMA) technology combination simultaneously
Row telecommunication transmission system.Because Terahertz radio-frequency front-end can provide very big bandwidth, to make full use of this frequency band to realize
Higher transmission rate, baseband signal design is one of difficult point.Therefore the problem, the base in pulse UWB Terahertzs front end are directed to
On plinth, the baseband frequency-domain signals organizational form of frequency division multiplexing is devised, by way of multiple narrow sub-band multiplexings, composition is whole
Body frequency-region signal, mutually orthogonal multiple signals are divided the signal into, support transmitting terminal to locate parallel with receiving terminal using parallel architecture
Reason.This invention can improve information and pass the rate that hastens, and effectively reduce the complexity that system is realized, have preferable feasibility.
The present invention is first combined pulse UWB technology with frequency division multiplexing, the overall parallelization thinking for using Design of Signal, is
Total bandwidth of uniting is separated into the subchannel of N number of non-overlapping copies, all independently transmits data per sub-channels, is located parallel
Reason, Integral Thought are as shown in Figure 1.In terms of the broadband real time signal processing of transmitting terminal and receiving terminal, the side of this parallelization is utilized
Method, which is realized, supports higher throughput.This invention realizes separable multi-path parallel signal by FDMA, reduces signal and adopts
Collection and the difficulty of synthesis and processing.
As shown in Fig. 2 the frequency division multiplexing Parallel communication framework based on pulse UWB Terahertzs front end of the present invention, including
Transmitter architecture and receiver structure.The transmitter architecture includes multiplexer, the power amplifier and too being sequentially connected
Hertz transmitting antenna, the multiplexer input are connected to a plurality of parallel arrangement of input channel branch road, every institute
State input channel branch road and independently transmit data, parallel processing.Every input channel branch road includes and multiplexing
The pulse shaper that device is connected, each pulse shaper are respectively connected with impulse generator and continuous wave source.
The receiver structure includes Terahertz reception antenna, low-noise amplifier and the demultiplexer being sequentially connected,
The demultiplexer output end is connected to a plurality of parallel arrangement of output channel branch road, every output channel branch road
Independently transmit data, parallel processing.Every output channel branch road includes the mixing being connected with demultiplexer
Device, each frequency mixer are respectively connected with local oscillator generator and 4-PAM demodulation modules.The quantity of the input channel branch road
Equal to the quantity of output channel branch road.
Circuit of the present invention is made up of the similar branch road of N bars.In transmitting terminal, every input channel branch road, 4-PAM base band letter
Number be passed into impulse generator, to produce the pulse signal of four kinds of different amplitudes, afterwards respectively from continuous wave source caused by it is different
The terahertz signal of carrier frequency is mixed in pulse shaper, is up-converted to pulsed RF signals, is then answered by multichannel
It is combined with device, and is amplified through power amplifier, is finally launched by terahertz sources antenna.In receiving terminal, Terahertz
After the signal that reception antenna receives is amplified by low-noise amplifier, every output channel branch road is distributed to by demultiplexer,
Down coversion is completed from different local oscillation signal mixing respectively, is exported after being demodulated finally by 4-PAM.
The present invention uses N roads parallel transmission, and the Bandwidth plan of single channel is Δ f, and its numerical value is equal to N/mono- of total bandwidth,
As shown in Figure 3.Impulse UWB signals are loaded into respectively on frequency phase-difference Δ f N number of carrier wave, total bandwidth is divided into multiple width
Sub-band for Δ f is transmitted.In the case where the character rate of single channel is 1-2 GBaud, N roads parallel transmission can make speed
Reach (1-2Gbps) × N, being significantly increased for transmission rate is realized while total bandwidth is constant, spectrum efficiency is obviously improved.
One of the characteristics of telecommunication channel is multi-path delay spread be present, and it limits carrying for message transmission rate
It is high.If transmission signal band is wider than the coherence bandwidth of channel, signal will appear from serious distortion, signal transmission quality significantly under
Drop, it is necessary to which intersymbol interference is reduced using the equilibrium of complexity.In this invention, due to total bandwidth be divided into it is multiple narrow
Subchannel, the correlation bandwidth of channel is less than per the signal bandwidth on sub-channels.Therefore, although total channel has frequency selection
Property, and each sub-band is relatively flat, so as to be effective against frequency selective fading, anti-multipath jamming and frequency choosing
Selecting property fading capability is strong.
Although the function and the course of work of the present invention are described above in conjunction with accompanying drawing, the invention is not limited in
Above-mentioned concrete function and the course of work, above-mentioned embodiment is only schematical, rather than restricted, ability
The those of ordinary skill in domain is not departing from present inventive concept and scope of the claimed protection situation under the enlightenment of the present invention
Under, many forms can also be made, these are belonged within the protection of the present invention.
Claims (4)
1. a kind of frequency division multiplexing Parallel communication framework based on pulse UWB Terahertzs front end, including transmitter architecture and reception
Machine structure, it is characterised in that the transmitter architecture includes multiplexer, power amplifier and the Terahertz hair being sequentially connected
Antenna is penetrated, the multiplexer input is connected to parallel arrangement of input channel branch road, every input channel
Branch road includes the pulse shaper being connected with multiplexer, and each pulse shaper is respectively connected with pulse hair
Raw device and continuous wave source；
The receiver structure includes Terahertz reception antenna, low-noise amplifier and the demultiplexer being sequentially connected, described
Demultiplexer output end is connected to parallel arrangement of output channel branch road, every output channel branch road include with
The frequency mixer that demultiplexer is connected, each frequency mixer are respectively connected with local oscillator generator and 4-PAM demodulation modules.
2. the frequency division multiplexing Parallel communication framework according to claim 1 based on pulse UWB Terahertzs front end, its feature
It is, the quantity of the input channel branch road is equal to the quantity of output channel branch road.
3. the frequency division multiplexing Parallel communication framework according to claim 1 based on pulse UWB Terahertzs front end, its feature
It is, every input channel branch road independently transmits data, parallel processing；Every the output channel branch road is independent
Transmit data, parallel processing in ground.
4. the frequency division multiplexing Parallel communication framework according to claim 1 based on pulse UWB Terahertzs front end, its feature
It is, in transmitting terminal, every input channel branch road, 4-PAM baseband signals are passed into impulse generator, to produce four kinds of differences
The pulse signal of amplitude, afterwards respectively with continuous wave source caused by different carrier frequencies terahertz signal in pulse shaper
It is mixed, up-converts to pulsed RF signals, be then combined by multiplexer, and amplified through power amplifier, most
Launched afterwards by terahertz sources antenna；In receiving terminal, the signal that Terahertz reception antenna receives is put by low-noise amplifier
After big, every output channel branch road is distributed to by demultiplexer, completes down coversion from different local oscillation signal mixing respectively,
Exported after being demodulated finally by 4-PAM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710825067.2A CN107682132A (en) | 2017-09-14 | 2017-09-14 | Frequency division multiplexing Parallel communication framework based on pulse UWB Terahertzs front end |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710825067.2A CN107682132A (en) | 2017-09-14 | 2017-09-14 | Frequency division multiplexing Parallel communication framework based on pulse UWB Terahertzs front end |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951196A (en) * | 2019-04-23 | 2019-06-28 | 四川众为创通科技有限公司 | A kind of Terahertz multi-carrier communications systems |
| CN109981135A (en) * | 2019-04-23 | 2019-07-05 | 四川众为创通科技有限公司 | Terahertz is the same as transmitting-receiving full duplex multi-carrier communications systems |
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| CN1732632A (en) * | 2002-12-31 | 2006-02-08 | 英特尔公司 | Method and apparatus to generate a clock-based transmission |
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| CN101547177A (en) * | 2009-04-14 | 2009-09-30 | 中国科学技术大学 | Ultra-wideband two phase PSK transmitter with balance structure and method |
| CN101588639A (en) * | 2009-06-30 | 2009-11-25 | 东南大学 | The reconfigurable system that the 4th third-generation mobile communication and impulse radio ultra-wideband are integrated |
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| CN102104390A (en) * | 2009-12-16 | 2011-06-22 | 中国科学院微电子研究所 | Transceiver used for 6 to 9 GHz dual-carrier orthogonal frequency division multiplexing ultra-wide band |
| US20130089121A1 (en) * | 2011-10-06 | 2013-04-11 | Yonsei University Office Of Research Affairs | Method of demodulating mdcm signal using hard decision and method of demodulating mdcm signal using soft decision |
| CN105262444A (en) * | 2015-05-21 | 2016-01-20 | 云南大学 | Ultra wideband analog pre-distortion circuit |
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2017
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Patent Citations (8)
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|---|---|---|---|---|
| CN1732632A (en) * | 2002-12-31 | 2006-02-08 | 英特尔公司 | Method and apparatus to generate a clock-based transmission |
| CN1759617A (en) * | 2003-05-01 | 2006-04-12 | 美国博通公司 | Weight generation method for multi-antenna communication systems utilizing RF-based and baseband signal weighting and combining |
| CN101547177A (en) * | 2009-04-14 | 2009-09-30 | 中国科学技术大学 | Ultra-wideband two phase PSK transmitter with balance structure and method |
| US20100310009A1 (en) * | 2009-06-09 | 2010-12-09 | Ismail Lakkis | Method and apparatus for constant envelope modulation |
| CN101588639A (en) * | 2009-06-30 | 2009-11-25 | 东南大学 | The reconfigurable system that the 4th third-generation mobile communication and impulse radio ultra-wideband are integrated |
| CN102104390A (en) * | 2009-12-16 | 2011-06-22 | 中国科学院微电子研究所 | Transceiver used for 6 to 9 GHz dual-carrier orthogonal frequency division multiplexing ultra-wide band |
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| CN105262444A (en) * | 2015-05-21 | 2016-01-20 | 云南大学 | Ultra wideband analog pre-distortion circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951196A (en) * | 2019-04-23 | 2019-06-28 | 四川众为创通科技有限公司 | A kind of Terahertz multi-carrier communications systems |
| CN109981135A (en) * | 2019-04-23 | 2019-07-05 | 四川众为创通科技有限公司 | Terahertz is the same as transmitting-receiving full duplex multi-carrier communications systems |
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Application publication date: 20180209 |