CN104968020A - Method of simply changing emission bandwidth and transmission system thereof - Google Patents
Method of simply changing emission bandwidth and transmission system thereof Download PDFInfo
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- CN104968020A CN104968020A CN201510218516.8A CN201510218516A CN104968020A CN 104968020 A CN104968020 A CN 104968020A CN 201510218516 A CN201510218516 A CN 201510218516A CN 104968020 A CN104968020 A CN 104968020A
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- subcarrier
- signal
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- filtering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/20—Negotiating bandwidth
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The present invention discloses a method of simply changing an emission bandwidth. The method comprises the following steps of S1 carrying out the signal transmission at each position of a subcarrier; S2 filtering a part of useless subcarrier of the transmitted signals via a filtering device to thereby retain the needed subcarrier and send out the needed subcarrier. According to the method of simply changing the emission bandwidth of the present invention, and by adding a filter of the corresponding bandwidth at a sending end, the bandwidth change is realized. According to method, by just selecting the useful signals at a signal source end, the characteristic of the original subcarrier is not changed, a receiving end is also not influenced, the original receiving end can be used directly to receive the signals, and the operation is simple, so that the change workload and the needed working time are less, the change cost is saved, and the change cycle is shortened.
Description
Technical field
The present invention relates to a kind of technical field of mobile communication, be specifically related to a kind of method and transmission system thereof of simple and easy change transmitted bandwidth.
Background technology
The field of bandwidth applications is very many, can be used for id signal transmission data transmission capabilities, in the mark unit interval by the data volume of link.The bandwidth of signal refers to the frequency range occupied by various different frequency compositions that this signal comprises.
The transmission system scheme having much ready-made chip in the communications field at present or developed, but due to the restriction by frequency spectrum resource, cause a lot of system well can not adapt to the demand of bandwidth varying.For this reason, person skilled, attempts directly reducing subcarrier number in the design or reducing subcarrier bandwidth, to change transmitted bandwidth, wherein, reduces subcarrier bandwidth and realizes by the clock changing modulation core.The former workload changed comparatively speaking of these two kinds of modes is larger, latter can cause receptivity no longer consistent with original system, add the time of testing authentication, and after being changed by these two kinds of modes, with original receiving system is all no longer compatible before, make receiving terminal need to redesign, thus considerably increase workload, and change cost.
Summary of the invention
The object of the invention is to solve above-mentioned the problems of the prior art, provide a kind of needs namely meeting change bandwidth, simultaneously, its change method is simple, change workload and the required operating time less, thus save change cost, shorten the method in change cycle and transmission system thereof.
For achieving the above object, the technical solution adopted in the present invention is as follows:
A method for simple and easy change transmitted bandwidth, is characterized in that, comprise the following steps:
S1: carry out Signal transmissions in each position of subcarrier;
S2: by the signal of transmission by the useless subcarrier of filter filtering part, thus retain required subcarrier, and send out.
Described step S1 comprises further:
S11: according to the subcarrier of transmission and the corresponding relation of signal source, confirms need the position at reserved subcarrier place and prepare the position at filtering subcarrier place;
S12: needing reserved subcarrier place to transmit useful signal, transmits useless signal at the subcarrier place preparing filtering.
Described step S2 comprises further:
The width of the subcarrier that the wavelength of described filter takies according to useful signal is arranged.
Realize a transmission system for the method for described simple and easy change transmitted bandwidth, it is characterized in that, comprising:
Signal source, for transmitting;
Modulation core, is connected to described signal source, changes for signal signal source transmitted, and confirms need reserved subcarrier position and prepare filtering subcarrier position;
Filter, is connected to described modulation core, for the useless subcarrier of filtering part.
Compared with prior art, the invention has the advantages that: the method for the simple and easy change transmitted bandwidth of the present invention, the change of bandwidth is realized by the method for the filter adding respective bandwidth at transmitting terminal, the method only need be chosen out useful signal in signal source, do not change the characteristic of original subcarrier, receiving terminal is not also affected, original receiving terminal can be directly used to receive signal, simple to operate, thus make change workload and the required operating time less, thus save change cost, shorten the change cycle.
Accompanying drawing explanation
Fig. 1 is the FB(flow block) of the method for a kind of simple and easy change transmitted bandwidth of the embodiment of the present invention;
Fig. 2 is the FB(flow block) of step S1 in Fig. 1;
Fig. 3 is normal signal spectrum schematic diagram;
Fig. 4 is signal source signal transmission and frequency spectrum corresponding relation schematic diagram;
Fig. 5 is filter shape and frequency spectrum and the corresponding schematic diagram of signal source signal transmission before filtering;
Fig. 6 contrasts schematic diagram before the frequency spectrum and filtering launched after filtering;
Fig. 7 is the structural representation of the transmission system of a kind of method for realizing simple and easy change transmitted bandwidth of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, introduce a kind of embodiment of the present invention in detail.
Signal spectrum under normal circumstances as shown in Figure 3.The method of a kind of simple and easy change transmitted bandwidth of the embodiment of the present invention, as shown in Figure 1, comprises the following steps:
S1: carry out Signal transmissions in each position of subcarrier;
S2: by the signal of transmission by the useless subcarrier of filter filtering part, thus retain required subcarrier, and send out.
As Fig. 2, step S1 comprises further:
S11: according to the subcarrier of transmission and the corresponding relation of signal source, confirms need the position at reserved subcarrier place and prepare the position at filtering subcarrier place;
S12: needing reserved subcarrier place to transmit useful signal, transmits useless signal at the subcarrier place preparing filtering.Its corresponding relation, as shown in Figure 4.
In step S2, the width of the subcarrier that the wavelength of filter takies according to useful signal is arranged, as shown in Figure 5.
By contrasting before the signal spectrum after the method process of the simple and easy change transmitted bandwidth of the present invention and process, as shown in Figure 6.
As shown in Figure 7, the transmission system of a kind of method for realizing simple and easy change transmitted bandwidth of the embodiment of the present invention, comprising: signal source 1, for transmitting; Modulation core 2, is connected to described signal source 1, changes for signal signal source 1 transmitted, and confirms need reserved subcarrier position and prepare filtering subcarrier position, and by carrier position information feed back to signal source 1; Filter 3, is connected to described modulation core 2, for the useless subcarrier of filtering part.
The method of the simple and easy change transmitted bandwidth of the present invention, the change of bandwidth is realized by the method for the filter adding respective bandwidth at transmitting terminal, the method only need be chosen out useful signal in signal source, do not change the characteristic of original subcarrier, receiving terminal is not also affected, can directly use original receiving terminal to receive signal, simple to operate, thus make change workload and the required operating time less, thus save change cost, shorten the change cycle.
Below by reference to the accompanying drawings embodiments of the present invention are explained in detail; but the present invention is not limited to above-mentioned execution mode; in the ken that those of ordinary skill in the art possess; can also make a variety of changes under the prerequisite not departing from present inventive concept and improve, these changes and improvements all fall in the protection range of application claims.
Claims (4)
1. a method for simple and easy change transmitted bandwidth, is characterized in that, comprise the following steps:
S1: carry out Signal transmissions in each position of subcarrier;
S2: by the signal of transmission by the useless subcarrier of filter filtering part, thus retain required subcarrier, and send out.
2. the method for a kind of simple and easy change transmitted bandwidth according to claim 1, it is characterized in that, described step S1 comprises further:
S11: according to the subcarrier of transmission and the corresponding relation of signal source, confirms need the position at reserved subcarrier place and prepare the position at filtering subcarrier place;
S12: needing reserved subcarrier place to transmit useful signal, transmits useless signal at the subcarrier place preparing filtering.
3. the method for a kind of simple and easy change transmitted bandwidth according to claim 2, it is characterized in that, described step S2 comprises further:
The width of the subcarrier that the wavelength of described filter takies according to useful signal is arranged.
4. realize a transmission system for the method for simple and easy change transmitted bandwidth described in any one of claims 1 to 3, it is characterized in that, comprising:
Signal source (1), for transmitting;
Modulation core (2), is connected to described signal source (1), changes for signal signal source (1) transmitted, and confirms need reserved subcarrier position and prepare filtering subcarrier position;
Filter (3), is connected to described modulation core (2), for the useless subcarrier of filtering part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510218516.8A CN104968020A (en) | 2015-04-29 | 2015-04-29 | Method of simply changing emission bandwidth and transmission system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510218516.8A CN104968020A (en) | 2015-04-29 | 2015-04-29 | Method of simply changing emission bandwidth and transmission system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104968020A true CN104968020A (en) | 2015-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510218516.8A Pending CN104968020A (en) | 2015-04-29 | 2015-04-29 | Method of simply changing emission bandwidth and transmission system thereof |
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| CN (1) | CN104968020A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885844A (en) * | 2005-06-20 | 2006-12-27 | 中国科学院上海微***与信息技术研究所 | Device for reducing peak-to-average ratio based on orthogonal multiplex multi-carrier transmission and its method |
| WO2008089176A1 (en) * | 2007-01-19 | 2008-07-24 | Nextwave Broadband Inc. | Wireless transceiver with reduced transit emissions |
| CN101902781A (en) * | 2010-08-02 | 2010-12-01 | 华为技术有限公司 | Nonstandard bandwidth implementation method and device |
| CN102487371A (en) * | 2010-12-02 | 2012-06-06 | 无锡物联网产业研究院 | Bandwidth adjusting method, transmitter and receiver |
| WO2015039354A1 (en) * | 2013-09-23 | 2015-03-26 | 华为技术有限公司 | Method for sending/receiving signal, corresponding device and system |
-
2015
- 2015-04-29 CN CN201510218516.8A patent/CN104968020A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885844A (en) * | 2005-06-20 | 2006-12-27 | 中国科学院上海微***与信息技术研究所 | Device for reducing peak-to-average ratio based on orthogonal multiplex multi-carrier transmission and its method |
| WO2008089176A1 (en) * | 2007-01-19 | 2008-07-24 | Nextwave Broadband Inc. | Wireless transceiver with reduced transit emissions |
| CN101902781A (en) * | 2010-08-02 | 2010-12-01 | 华为技术有限公司 | Nonstandard bandwidth implementation method and device |
| CN102487371A (en) * | 2010-12-02 | 2012-06-06 | 无锡物联网产业研究院 | Bandwidth adjusting method, transmitter and receiver |
| WO2015039354A1 (en) * | 2013-09-23 | 2015-03-26 | 华为技术有限公司 | Method for sending/receiving signal, corresponding device and system |
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Application publication date: 20151007 |