CN105357161B - Sub-carrier wave distribution method, the apparatus and system of power line communication ofdm system - Google Patents
Sub-carrier wave distribution method, the apparatus and system of power line communication ofdm system Download PDFInfo
- Publication number
- CN105357161B CN105357161B CN201410409196.XA CN201410409196A CN105357161B CN 105357161 B CN105357161 B CN 105357161B CN 201410409196 A CN201410409196 A CN 201410409196A CN 105357161 B CN105357161 B CN 105357161B
- Authority
- CN
- China
- Prior art keywords
- subcarrier
- mrow
- time slot
- msub
- error rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004891 communication Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000004044 response Effects 0.000 claims abstract description 61
- 238000004364 calculation method Methods 0.000 claims abstract description 8
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 claims description 26
- 102100038659 Inactive tyrosine-protein kinase PRAG1 Human genes 0.000 claims description 26
- 238000005516 engineering process Methods 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 description 6
- 238000000205 computational method Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 2
- 206010068052 Mosaicism Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 210000003765 sex chromosome Anatomy 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The invention discloses a kind of sub-carrier wave distribution method, the apparatus and system of power line communication ofdm system, wherein, this method includes：For each subcarrier, the situation for the response message that transmitting terminal arrives according to the subcarrier reception and the subcarrier channel estimating value of the subcarrier of the probability calculation in low error rate in time slot t+1 in time slot t；At least one subcarrier that transmitting terminal determines to select according to the channel estimating value of all subcarriers calculated.This method is mainly used in improving the reliability to communicate in power line communication OFDM technology.
Description
Technical field
The present invention relates to power line communication technology field, more particularly to a kind of power line communication OFDM (Orthogonal
Frequency Division Multiplexing, OFDM) system sub-carrier wave distribution method, apparatus and system.
Background technology
Power line communication (Powerline Communications, PLC) technology is as the distinctive communication skill of power industry
Art, possess the low huge advantage of wide coverage, cost, extensively should be obtained in power user power consumption information acquisition system field
With.By development for many years, OFDM technology is increasingly becoming one of mainstream technology of power line communication, has in intelligent adapted electrical domain
Wide application prospect.
As power line communication OFDM technology Developing mainstream technology, adaptive OFDM technology can be according to each subcarrier
Signal to noise ratio, subcarrier and bit number and transmission power on each subcarrier are dynamically distributed, effectively reduces noisy channels characteristic
Influence to data transfer
In power information acquisition system communications applications, power line channel it is severe there is intrinsic noise circumstance in itself and
And problem complicated and changeable, fail to take into full account the influence of the noise circumstance of severe complexity in actual applications, not only communication can
It is difficult to be guaranteed by sex chromosome mosaicism, it is more difficult to play the high advantage of ofdm communication speed, this has turned into urgently to be resolved hurrily and urgent asked
Topic.
The content of the invention
Seriously cause communication reliability not high to solve power line communication OFDM technology noise jamming in the prior art
Technical problem, the present invention propose a kind of sub-carrier wave distribution method, the apparatus and system of power line communication ofdm system.
A kind of sub-carrier wave distribution method of power line communication ofdm system, including：
For each subcarrier, the situation for the response message that transmitting terminal arrives according to the subcarrier reception and the subcarrier when
Channel estimating value of probability calculation in the low error rate subcarrier in time slot t+1 during gap t；
At least one subcarrier that transmitting terminal determines to select according to the channel estimating value of all subcarriers calculated.
A kind of subcarrier distributor of power line communication ofdm system, including：
Computing module, for the situation of the response message arrived for each subcarrier, transmitting terminal according to the subcarrier reception
With the subcarrier in time slot t channel estimating value of the subcarrier of the probability calculation in low error rate in time slot t+1；
Determining module, at least one sub- load for determining to select according to the channel estimating value of all subcarriers calculated
Ripple.
Such scheme provided by the invention is a kind of based on receiving terminal feedback and Bayesian sub-carrier wave distribution method
The preferable subcarrier of communication quality can be dynamically chosen according to changes in channel characteristics in real time, so as to effectively overcome power line channel
Severe noise problem, the bit error rate is reduced, improve the communication reliability of power line communication ofdm system.Simultaneously because the present embodiment
The computational methods complexity of use is low, when not only having the advantages of being easily achieved, be practical, and can shorten channel estimating
Between, improve communication efficiency.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
Apply example to be used to explain the present invention together, be not construed as limiting the invention.In the accompanying drawings：
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of flow of the sub-carrier wave distribution method for power line communication ofdm system that the embodiment of the present invention 1 provides
Figure；
Fig. 2 is a kind of structure of the subcarrier distributor for power line communication ofdm system that the embodiment of the present invention 2 provides
Schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.Also, following embodiment is the alternative of the present invention, embodiment
Put in order and the numbering of embodiment is unrelated with the order that it preferably is carried out.
Embodiment 1
The present embodiment provides a kind of sub-carrier wave distribution method of power line communication ofdm system, and this method carries for power line
Ripple channel characteristic, realized based on receiving terminal feedback and Bayes' theorem.
Assuming that m (m is natural number) individual subcarrier is divided into altogether in power line communication ofdm system, each subcarrier
Signal to noise ratio Sn(n=1,2 ..., m) is represented, the noise value of reception is preset as S0；Receiving terminal according to the pilot frequency information of physical layer come
Calculate the signal to noise ratio of each subcarrier, and and S0It is compared.If Sn≥S0, then send ACK (Acknowledgement,
Confirm character) transmitting terminal is given, if Sn＜ S0, then send a NACK (Negative Acknowledgement, negative response) and give
Transmitting terminal.Special circumstances are that transmitting terminal can not receive any feedback, show channel at the end of the timer of transmitting terminal preset time
Quality is excessively poor, and feedback link interrupts, and now receiving terminal is then used as and receives NACK processing.An, t represent have in time slot t subcarriers n
Do not use.
Based on the above, as described in Figure 1, this method includes：
101, for each subcarrier, the situation for the response message that transmitting terminal arrives according to the subcarrier reception and the subcarrier
Channel estimating value of the subcarrier of the probability calculation in low error rate in time slot t+1 in time slot t；
Wherein, the situation of the above-mentioned response message received includes：The shape of the response message received at the end of time slot t
The situation of condition and the response message being respectively received under high low error rate.
Wherein, the probability in low error rate during channel estimating value i.e. t+1 during time slot t+1.
Represented with subcarrier n for any subcarrier, 101 can realize in the following way：
According to the probability Q of the subcarrier n NACK response messages received under low error rate0, subcarrier n height by mistake
The probability Q of the NACK response messages received under code check1, the shapes of response message that are received at the end of time slot t of subcarrier n
Condition ZN, tWith the probability q in low error rate in time slot tN, tCalculate subcarrier n in time slot t+1 in low error rate
Probability qN, t+1。
Such as it can be calculated by equation below 1
Wherein, n is subcarrier number, λ=qN, t*Q0+ (1-qN, t)*Q1；Q in formula (1)N, tMultiplication sign afterwards has been omitted from.
The origin of the formula (1) is described below：
The present embodiment sub-carrier defines two states,：High bit-error state and low error rate state (the wherein bit error rate
It is low error rate during minus 5 power less than 10；Otherwise it is high bit-error), subcarrier n, which is in low error rate shape probability of state, is
qn,t∈[0,1].Assuming that it is Q to receive NACK probability in high bit-error state1, NACK probability is received in low error rate state
It is Q0.If Q1＞ Q0, then transmitting terminal do not know when selecting subcarrier each subcarrier be in low error rate state or it is high by mistake
Code check state, but Q is gone out according to transmitting terminal cumulative calculation1Value and Q0Value (i.e. Q1And Q0Transmitting terminal, it is known that and they just
Initial value in system initialization by the interaction of sending and receiving end in obtain).Transmitting terminal is according to subcarrier n in time slot t
The probability q of low error rateN, tWith the situation Z that response message ACK/NACK is received at the end of time slot tN, tUpdate next state
qN, t+1, i.e., according to qN, t+1To determine the subcarrier n of next time slot service condition aN, t+1.The service condition of all subcarriers
Represented with π, πt=[a1(t) ..., an(t) ..., am(t)]。
Work as an,tWhen=1, the probability that transmitting terminal receives NACK is λ=qN, t*Q0+ (1-qN, t)*Q1, (during initialization, i.e. q
Initialization value 0.5) to be then in low error rate shape probability of state at the t+1 moment according to Bayes' theorem, subcarrier n:
The prediction for channel status can so be obtained.Channel status of all subcarriers at the t+1 moment can use vector
vt+1=[q1(t+1) ..., qn(t+1) ..., qm(t+1)] represent.
102, at least one subcarrier that transmitting terminal determines to select according to the channel estimating value of all subcarriers calculated.
Specifically, the channel estimating value of all subcarriers of the transmitting terminal to calculating is ranked up；According still further to by greatly to
It is small to choose at least one subcarrier use.
I.e. first by the channel estimating value q of all subcarriersn,t+1It is ranked up, then descending selection is N number of to make
Subcarrier.Due to having used channel prediction arithmetic, the subcarrier selected every time is all more high-quality subcarrier, therefore can be with
Effectively reduce the bit error rate.
The present embodiment provides a kind of fed back based on receiving terminal can be real with Bayesian sub-carrier wave distribution method
When the preferable subcarrier of communication quality is dynamically chosen according to changes in channel characteristics, so as to effectively overcome power line channel severe
Noise problem, the bit error rate is reduced, improve the communication reliability of power line communication ofdm system.Simultaneously because what the present embodiment used
Computational methods complexity is low, not only has the advantages of being easily achieved, be practical, and can shorten the channel estimating time, carries
High communication efficiency.
Embodiment 2
Realized for the ease of the method in embodiment 1, the present embodiment provides a kind of son load of power line communication ofdm system
Ripple distributor, the device can be the transmitting terminal in embodiment 1, can also install in transmitting terminal in embodiment 1, such as scheme
Shown in 2, including：Computing module 21, determining module 22.
Computing module 21, for the shape of the response message arrived for each subcarrier, transmitting terminal according to the subcarrier reception
Condition and the subcarrier channel estimating value of the subcarrier of the probability calculation in low error rate in time slot t+1 in time slot t；Really
Cover half block 22, at least one subcarrier for determining to select according to the channel estimating value of all subcarriers calculated.
Wherein, the situation of the response message received includes：The situation of the response message received at the end of time slot t and
The situation for the response message being respectively received under high low error rate.
Correspondingly, computing module 21, believe specifically for the NACK responses received according to subcarrier n under low error rate
The probability Q of breath0, the probability Q of NACK response messages that are received under high bit-error of subcarrier n1, subcarrier n is in time slot t
At the end of the situation Z of response message that receivesN, tWith the probability q in low error rate in time slot tN, tCalculate subcarrier n
The probability q in low error rate in time slot t+1N, t+1。
The situation of the response message wherein received at the end of time slot t includes：NACK is received at the end of time slot t should
Answer information, receive ACK response messages at the end of the time slot t, in time slot t at the end of not receiving response message in the scheduled time
Situation as receiving NACK response messages.
Correspondingly, determining module 22, it is ranked up specifically for the channel estimating value of all subcarriers to calculating, and
At least one subcarrier use is chosen according to descending.
Can be according to the response message that receiving terminal feeds back by being combined with Bayes' theorem in the device that the present embodiment provides
To judge the availability of subcarrier, the selection of available subcarrier is carried out in a manner of prediction, solves power line in the prior art
Communication OFDM technology noise jamming seriously causes the not high technical problem of communication reliability, not only has and is easily achieved, is practical
Property it is strong the advantages of, and the channel estimating time can be shortened, improve communication efficiency.
Embodiment 3
The present embodiment provides a kind of subcarrier distribution system of power line communication ofdm system, the system include receiving terminal and
Transmitting terminal；
Wherein transmitting terminal communicates with the subcarrier distributor of the power line communication ofdm system in embodiment 2, again not
Repeat.
Receiving terminal, response message is sent to the transmitting terminal for the signal to noise ratio according to each subcarrier.
Preferably, receiving terminal, the signal to noise ratio specifically for for each subcarrier, calculating the subcarrier；When the subcarrier
Signal to noise ratio when being not less than default noise value, send ACK response messages to the transmitting terminal；Otherwise, NACK response messages are sent
To the transmitting terminal.
It is preferably sub that the system that the present embodiment provides can dynamically choose communication quality according to changes in channel characteristics in real time
Carrier wave, so as to effectively overcome the severe noise problem of power line channel, the bit error rate is reduced, improves power line communication ofdm system
Communication reliability.Simultaneously because the computational methods complexity that the present embodiment uses is low, not only has and be easily achieved, be practical
Advantage, and the channel estimating time can be shortened, improve communication efficiency.
The device that said system provided in an embodiment of the present invention includes, got based on the device that embodiment 2 provides
, therefore the device in embodiment 2 is referred in place of not being described in detail to the greatest extent, it will not be described here.
Technical scheme is in other words substantially the shape with software product to the part that prior art contributes
The function that formula embodies, in other words：The side of the device of the present invention, each equipment of equipment or composition system performed by it
Even if method or the function body of realization are hardware, but the part of the actually above-mentioned function of the realization present invention is computer software
The module or unit of product.It is soft such as computer and the computer software product is storable in the storage medium that can be read
Disk, hard disk or CD etc., including some instructions are causing equipment to perform the method described in each embodiment of the present invention.
The foregoing is only a specific embodiment of the invention, but the present invention can have a variety of various forms of specific implementations
Mode, the present invention is done above in association with accompanying drawing for example, this is not meant to the embodiment that the present invention is applied
It can be confined in these specific embodiments, those skilled in the art is it is to be appreciated that specific reality presented above
The mode of applying is some examples in a variety of preferred embodiments, and the embodiment of any embodiment the claims in the present invention is equal
Should be within the scope of the claims in the present invention be claimed；Those skilled in the art can be to each specific embodiment party above
Described technical scheme is modified in formula, or carries out equivalent substitution to which part technical characteristic.It is all the present invention
Within spirit and principle, any modification, equivalent substitution or improvement for being made etc., the guarantor of the claims in the present invention should be included in
Within the scope of shield.
Claims (7)
- A kind of 1. sub-carrier wave distribution method of power line communication ofdm system, it is characterised in that including：For each subcarrier, the situation for the response message that transmitting terminal arrives according to the subcarrier reception and the subcarrier are in time slot t When channel estimating value of the subcarrier of the probability calculation in low error rate in time slot t+1；At least one subcarrier that transmitting terminal determines to select according to the channel estimating value of all subcarriers calculated；The situation of the response message arrived according to the subcarrier reception and the subcarrier are in time slot t in the general of low error rate Rate calculates channel estimating value of the subcarrier in time slot t+1, specifically includes：According to the probability Q of the subcarrier n NACK response messages received under low error rate0, subcarrier n is in high bit-error Under the probability Q of NACK response messages that receives1, the situations of response message that are received at the end of time slot t of subcarrier n ZN, tWith the probability q in low error rate in time slot tN, tIt is general in low error rate in time slot t+1 to calculate subcarrier n Rate qN, t+1；Wherein, the situation of the response message received at the end of time slot t includes：NACK responses are received at the end of time slot t Information, receive ACK response messages at the end of the time slot t, in time slot t at the end of not receiving response message in the scheduled time Situation, which is regarded, receives NACK response messages；The probability Q of the NACK response messages received according to subcarrier n under low error rate0, subcarrier n height by mistake The probability Q of the NACK response messages received under code check1, the shapes of response message that are received at the end of time slot t of subcarrier n Condition ZN, tWith the probability q in low error rate in time slot tN, tCalculate subcarrier n in time slot t+1 in low error rate Probability qN, t+1, it is specially：<mrow> <msub> <mi>q</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mfenced open = "{" close = ""> <mtable> <mtr> <mtd> <mfrac> <mrow> <msub> <mi>q</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>t</mi> </mrow> </msub> <msub> <mi>Q</mi> <mn>0</mn> </msub> </mrow> <mi>&lambda;</mi> </mfrac> </mtd> <mtd> <mrow> <msub> <mi>Z</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>t</mi> </mrow> </msub> <mo>=</mo> <mn>1</mn> </mrow> </mtd> </mtr> <mtr> <mtd> <mfrac> <mrow> <msub> <mi>q</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>t</mi> </mrow> </msub> <mrow> <mo>(</mo> <mn>1</mn> <mo>-</mo> <msub> <mi>Q</mi> <mn>0</mn> </msub> <mo>)</mo> </mrow> </mrow> <mrow> <mn>1</mn> <mo>-</mo> <mi>&lambda;</mi> </mrow> </mfrac> </mtd> <mtd> <mrow> <msub> <mi>Z</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>t</mi> </mrow> </msub> <mo>=</mo> <mn>0</mn> </mrow> </mtd> </mtr> </mtable> </mfenced> </mrow>Wherein, n is subcarrier number, λ=qN, tQ0+ (1-qN, t)Q1；
- 2. according to the method for claim 1, it is characterised in thatThe situation of the response message received includes：The situation of the response message received at the end of time slot t and in height The situation for the response message being respectively received under low error rate.
- 3. according to the method for claim 1, it is characterised in that the transmitting terminal is according to the letters of all subcarriers calculated At least one subcarrier that the determination of road predicted value is selected, is specifically included：The channel estimating value of all subcarriers of the transmitting terminal to calculating is ranked up；At least one subcarrier use is chosen according to descending.
- A kind of 4. subcarrier distributor of power line communication ofdm system, it is characterised in that including：Computing module, for the situation of response message that is arrived for each subcarrier, transmitting terminal according to the subcarrier reception and should The subcarrier channel estimating value of the subcarrier of the probability calculation in low error rate in time slot t+1 in time slot t；Determining module, at least one subcarrier for determining to select according to the channel estimating value of all subcarriers calculated；The situation of the response message received includes：The situation of the response message received at the end of time slot t and in height The situation for the response message being respectively received under low error rate；The computing module, specifically for the probability of the NACK response messages received according to subcarrier n under low error rate Q0, the probability Q of NACK response messages that are received under high bit-error of subcarrier n1, subcarrier n connects at the end of time slot t The situation Z of the response message receivedN, tWith the probability q in low error rate in time slot tN, tSubcarrier n is calculated in time slot t+1 When the probability q in low error rateN, t+1；The situation of the response message wherein received at the end of time slot t includes：NACK responses letter is received at the end of time slot t Breath, receive ACK response messages at the end of the time slot t, in time slot t at the end of the shape for not receiving response message in the scheduled time Condition, which is regarded, receives NACK response messages；The probability Q of the NACK response messages received according to subcarrier n under low error rate0, subcarrier n height by mistake The probability Q of the NACK response messages received under code check1, the shapes of response message that are received at the end of time slot t of subcarrier n Condition ZN, tWith the probability q in low error rate in time slot tN, tCalculate subcarrier n in time slot t+1 in low error rate Probability qN, t+1, it is specially：<mrow> <msub> <mi>q</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mfenced open = "{" close = ""> <mtable> <mtr> <mtd> <mfrac> <mrow> <msub> <mi>q</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>t</mi> </mrow> </msub> <msub> <mi>Q</mi> <mn>0</mn> </msub> </mrow> <mi>&lambda;</mi> </mfrac> </mtd> <mtd> <mrow> <msub> <mi>Z</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>t</mi> </mrow> </msub> <mo>=</mo> <mn>1</mn> </mrow> </mtd> </mtr> <mtr> <mtd> <mfrac> <mrow> <msub> <mi>q</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>t</mi> </mrow> </msub> <mrow> <mo>(</mo> <mn>1</mn> <mo>-</mo> <msub> <mi>Q</mi> <mn>0</mn> </msub> <mo>)</mo> </mrow> </mrow> <mrow> <mn>1</mn> <mo>-</mo> <mi>&lambda;</mi> </mrow> </mfrac> </mtd> <mtd> <mrow> <msub> <mi>Z</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>t</mi> </mrow> </msub> <mo>=</mo> <mn>0</mn> </mrow> </mtd> </mtr> </mtable> </mfenced> </mrow>Wherein, n is subcarrier number, λ=qN, tQ0+ (1-qN, t)Q1；
- 5. device according to claim 4, it is characterised in thatThe determining module, it is ranked up specifically for the channel estimating value of all subcarriers to calculating, and according to by big At least one subcarrier use is chosen to small.
- 6. a kind of subcarrier distribution system of power line communication ofdm system, it is characterised in that including receiving terminal and transmitting terminal；The subcarrier distributor of power line communication ofdm system of the transmitting terminal as described in claim 4 or 5；The receiving terminal, response message is sent to the transmitting terminal for the signal to noise ratio according to each subcarrier.
- 7. system according to claim 6, it is characterised in that the receiving terminal, specifically for for each subcarrier, meter Calculate the signal to noise ratio of the subcarrier；When the signal to noise ratio of the subcarrier is not less than default noise value, ACK response messages are sent described in Transmitting terminal；Otherwise, NACK response messages are sent to the transmitting terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410409196.XA CN105357161B (en) | 2014-08-19 | 2014-08-19 | Sub-carrier wave distribution method, the apparatus and system of power line communication ofdm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410409196.XA CN105357161B (en) | 2014-08-19 | 2014-08-19 | Sub-carrier wave distribution method, the apparatus and system of power line communication ofdm system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105357161A CN105357161A (en) | 2016-02-24 |
| CN105357161B true CN105357161B (en) | 2018-03-27 |
Family
ID=55333028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410409196.XA Active CN105357161B (en) | 2014-08-19 | 2014-08-19 | Sub-carrier wave distribution method, the apparatus and system of power line communication ofdm system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105357161B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112104397B (en) * | 2020-11-23 | 2021-03-23 | 国网江西省电力有限公司经济技术研究院 | MIMO power line communication data transmission method and device |
| CN114596690A (en) * | 2021-12-22 | 2022-06-07 | 国网河北省电力有限公司信息通信分公司 | Underground pipe gallery-oriented monitoring method, terminal and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497259A (en) * | 2011-12-02 | 2012-06-13 | 中国科学院微电子研究所 | Subcarrier allocation method and device applied to power line communication |
| CN103701576A (en) * | 2013-06-26 | 2014-04-02 | 国家电网公司 | Power line communication frequency band allocation method and device |
-
2014
- 2014-08-19 CN CN201410409196.XA patent/CN105357161B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497259A (en) * | 2011-12-02 | 2012-06-13 | 中国科学院微电子研究所 | Subcarrier allocation method and device applied to power line communication |
| CN103701576A (en) * | 2013-06-26 | 2014-04-02 | 国家电网公司 | Power line communication frequency band allocation method and device |
Non-Patent Citations (1)
| Title |
|---|
| 智能电网的１０Ｇ－ＥＰＯＮ中基于贝叶斯分类的业务感知机制;白晖峰等;《光子学报》;20130630;1-6页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105357161A (en) | 2016-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108347318B (en) | Uplink transmission method and device | |
| CN103929766B (en) | Techniques for radio link problem and recovery detection in a wireless communication system | |
| US20120182964A1 (en) | Pilot and channel estimation method for sdma mimo transmission downlink | |
| US20170163448A1 (en) | Multiple-input multiple-output orthogonal frequency division multiplexing communication system and method for signal compensation | |
| WO2009020876A1 (en) | Mobile station aggregation of acknowledgments and negative acknowledgments in wireless networks | |
| CN103067327B (en) | Method for transmitting signals and signal transmitting apparatus | |
| CN105306114A (en) | Basestation | |
| CN108650066A (en) | User apparatus and base station | |
| CN101897136A (en) | Radio communication system, reception device, and reception method | |
| CN102468947A (en) | Feedback method and equipment for signal channel quality information | |
| CN107926032A (en) | Information carrying means, method and communication system | |
| EP3012991A1 (en) | Method and device for using high-dimensional constellation graph to transmit data | |
| US10277449B2 (en) | Method and device for generating non-gaussian interference channel in wireless communication system | |
| CN103731923A (en) | Method and device for multi-user dispatching | |
| CN103036601A (en) | Method and device for determining rank indication and pre-coding matrix index | |
| US11109365B2 (en) | Communication method, terminal, and network device for repeating uplink control information to obtain data segment | |
| CN103516654A (en) | Frequency offset estimation method and system | |
| CN101502030A (en) | OFDM communication device and guard interval length determining method | |
| EP2606619B1 (en) | Inserting and decoding replicated data symbols in wireless communications | |
| CN105357161B (en) | Sub-carrier wave distribution method, the apparatus and system of power line communication ofdm system | |
| CN107888260A (en) | A kind of beam selection method and relevant device | |
| CN103023622B (en) | A kind of signal detecting method and equipment | |
| EP2611044B1 (en) | Adaptive transmit beamforming | |
| EP4376315A1 (en) | Method for transmitting channel state information, and communication node and storage medium | |
| CN113824667B (en) | Information sending method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |