CN203086473U - Multi-input Zigbee receiving device - Google Patents
Multi-input Zigbee receiving device Download PDFInfo
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- CN203086473U CN203086473U CN 201320097590 CN201320097590U CN203086473U CN 203086473 U CN203086473 U CN 203086473U CN 201320097590 CN201320097590 CN 201320097590 CN 201320097590 U CN201320097590 U CN 201320097590U CN 203086473 U CN203086473 U CN 203086473U
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Abstract
The utility model relates to a multi-input Zigbee receiving device. The device comprises two or more radio-frequency antennae, a radio-frequency module, a detecting module, a data processing module, a storage and a combiner, wherein the two or more radio-frequency antennae are respectively connected with the radio-frequency module; and the radio-frequency module, the detecting module, the data processing module, the storage and the combiner are sequentially connected according to a signal processing flow. According to the multi-input Zigbee receiving device, a plurality of the antennae which are mutually independent are adopted, so that the sensibility of the system for receiving a signal is greatly improved, and the capability of eliminating signal interference and attenuation is greatly improved. The multi-input Zigbee receiving device can also be applied to a complex environment, and the problems of serious decreasing of quality of a received signal, even no received signal, rapid decreasing of signal coverage, obvious decreasing of received signal throughput or frequency spectrum and the like in case of wireless multi-route transmission under the complex environment of single input mode are solved.
Description
Technical field
The utility model relates to wireless communication technology field, more particularly, relates to a kind of Zigbee emitter and method thereof of many inputs.
Background technology
Zigbee (short distance, lower powered wireless communication technology) be a kind of emerging closely, low complex degree, low-power consumption, low message transmission rate, radio network technique cheaply, it is a kind of technology motion between radio mark technology and bluetooth, is mainly used near radio and connects.It coordinates to realize communication mutually according to the 802.15.4 standard between thousands of small transducers.These transducers only need energy seldom, in the mode of relay by radio wave with data from a transducer to another transducer, so their communication efficiency is very high.
What existing Zigbee technology adopted is the single channel input pattern, the Zigbee module of this single channel input pattern is easy to be subjected to using the influence of site environment, in environment in relative complex, have the interference and the decay that are subjected to external environment in the process that signal transmits at the scene, receiving sensitivity is low, and the signal quality that system is received can seriously descend even not receive signal.
The utility model content
The purpose of this utility model is to solve Zigbee module in the prior art and adopts the single channel input pattern to be subjected to the deficiency of external environment influence easily, a kind of Zigbee receiving system of many inputs is provided, this device is by adopting the mode of multichannel input, make system at complex environment also received signal effectively, and the receiving sensitivity height, the signal receiving quality of raising system.
In order to achieve the above object, the utility model provides a kind of Zigbee receiving system of many inputs, and described device comprises that two or more are used for the radio-frequency antenna of received RF signal, be used to handle radio-frequency module from the radiofrequency signal of each described radio-frequency antenna reception, be used for the signal of described radio-frequency module output is carried out the detection module that layering is handled, be used to handle data processing module from each layer data of described detection module output, be used to eliminate the interference cancellation module of interference signal, be used to store the memory of each layer data after described data processing module is handled and the combiner that the multi-layer data in the described memory is merged; Described two or more radio-frequency antennas are connected with described radio-frequency module respectively, and described radio-frequency module, detection module, data processing module, memory and combiner are connected successively according to signal processing flow; The output of described data processing module links to each other with described interference cancellation module with described memory respectively, and the output of described interference cancellation module is connected with described detection module.
According to an embodiment of the present utility model, described data processing module comprises and is used to separate from the carrier signal and the modulation signal of described detection module output and obtains the demodulator of modulation signal, is used for the decoder that wideband spread-spectrum signal is separated the despreader of spread spectrum and is used for the signal of described despreader output is decoded; Described demodulator, despreader and decoder are connected successively according to signal processing flow, the output of described detection module is connected with described demodulator, the output of described decoder is connected with described interference cancellation module and described memory respectively, and the output of described interference cancellation module is connected with described detection module.
According to an embodiment of the present utility model, the mode that described interference cancellation module adopts iteration interference eliminated or adaptive disturbance to eliminate is carried out interference eliminated.
According to an embodiment of the present utility model, described detection module comprises channel estimation module, is used to detect the signal to noise ratio from the multiple signals place channel of described radio-frequency module output.
According to an embodiment of the present utility model, described radio-frequency module also comprises low noise amplifier and analog to digital converter, and the signal of described radio-frequency antenna output amplifies and analog to digital converter is exported to described detection module after converting digital signal to through described low noise amplifier.
The utility model also provides a kind of Zigbee method of reseptance of many inputs, said method comprising the steps of:
(1) radio-frequency module is handled from a plurality of radio-frequency antennas by low noise amplifier and analog to digital converter and is received the multiple signals of coming;
(2) after multiple signals enter detection module, at first by channel estimation module to the channel at multiple signals place carry out the signal to noise ratio estimation, again by data processing module multiple signals are carried out that circulation layer is handled and with the storage of each circular treatment in memory;
(3) data of memory output reduction initial data after combiner merges.
According to an embodiment of the present utility model, in the described step (2), after described channel estimation module is carried out the signal to noise ratio estimation to the channel at multiple signals place, at first select the channel of signal to noise ratio maximum, then the signal in this channel is carried out demodulation successively, separates spread spectrum and decoding processing by described data processing module.
According to an embodiment of the present utility model, described data processing module returns described interference cancellation module after finishing one deck data processing, described detection module is removed by described interference cancellation module and has been detected the data of having handled, carry out circular treatment to remaining other layer data through described channel estimation module and described data processing module again, until all data are all disposed.
According to an embodiment of the present utility model, the number of times that described channel estimation module and described data processing module carry out the datacycle processing is identical with the number of described radio-frequency antenna.
The utility model is with respect to prior art, have following beneficial effect: the Zigbee receiving system of a kind of many inputs of the utility model is by adopting many separate antennas, make the sensitivity of system's received signal improve greatly, and improved the elimination ability of system to interference signal, the Zigbee receiving system of this many inputs can also be suitable in the complex environment, solved single input pattern received signal under complex environment as during the transmission of wireless multipath received signal quality seriously descend, even do not receive signal, signal covers sharply and reduces, and received signal throughput or frequency spectrum obviously descend the degradation problem.
Description of drawings
Fig. 1 is the structural representation of the Zigbee receiving system of a kind of many inputs of the utility model;
Fig. 2 is the structural representation of the utility model embodiment.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
As shown in Figure 1, the structural representation of the Zigbee receiving system of the many inputs that provide for the utility model, this Zigbee receiving system comprises that two or more are used for the radio-frequency antenna of received RF signal, be used to handle radio-frequency module from the radiofrequency signal of each radio-frequency antenna reception, be used for the signal of radio-frequency module output is carried out the detection module that layering is handled, be used to handle data processing module from each layer data of detection module output, be used to eliminate the interference cancellation module of interference signal, be used to store the memory of each layer data after data processing module is handled and the combiner that the multi-layer data in the memory is merged; Two or more radio-frequency antennas are connected with radio-frequency module respectively, and radio-frequency module, detection module, data processing module, memory and combiner are connected successively according to signal processing flow; The output of data processing module links to each other with interference cancellation module with memory respectively, and the output of interference cancellation module is connected with detection module.
Among the embodiment of the present utility model, radio-frequency module also comprises low noise amplifier and analog to digital converter, and the signal of radio-frequency antenna output amplifies and analog to digital converter is exported to detection module after converting digital signal to through described low noise amplifier.
Among the utility model embodiment, data processing module comprises and is used to separate from the signal and the modulation signal of detection module output and obtains the demodulator of modulation signal, is used for the decoder that wideband spread-spectrum signal is separated the despreader of spread spectrum and is used for the signal of separating spread spectrum output is decoded; Demodulator, despreader and decoder are connected successively according to signal processing flow, and the output of detection module is connected with demodulator, and the output of decoder is connected with interference cancellation module with memory respectively.Embodiment of the present utility model, interference cancellation module is used to delete detection signal, mode detection signal module elimination from detection module that interference cancellation module preferentially adopts iteration interference eliminated or adaptive disturbance to eliminate.
Among the embodiment of the present utility model, detection module also comprises channel estimation module, is used to detect the signal to noise ratio from the multiple signals place channel of described radio-frequency module output.This channel estimation module detects the signal to noise ratio of all signal place channels, select the channel of signal to noise ratio maximum, and, at last this layer data of handling is stored in the memory carrying out demodulation in the input of the signal in this channel data processing module, separating data processing such as spread spectrum and decoding.Decoder in the data processing module returns interference cancellation module after finishing the ground floor data processing, detection module is removed by this interference cancellation module and has been detected the data of having handled, carry out circular treatment to remaining other layer data channel estimating module and data processing module again, until all data are all disposed.
The utility model also provides a kind of Zigbee method of reseptance of many inputs, and this method may further comprise the steps:
(1) radio-frequency module is handled from a plurality of radio-frequency antennas by low noise amplifier and analog to digital converter and is received the multiple signals of coming;
(2) after multiple signals enter detection module, at first by channel estimation module to the channel at multiple signals place carry out the signal to noise ratio estimation, again by data processing module multiple signals are carried out that circulation layer is handled and with the storage of each circular treatment in memory;
(3) data of memory output reduction initial data after combiner merges.
For example, as shown in Figure 2, the signal that has three radio-frequency antennas to receive is respectively Y1, Y2 and Y3, and its corresponding reception antenna is respectively X1, X2 and X3, can get channel matrix according to the Principle of Antenna of multiple-input and multiple-output, and is as follows:
Wherein, the emission vector is x=(x
1, x
2, x
3)
T
Receiving vector is y=(y
1, y
2, y
3)
T,
Y then
1=x
1h
11+ x
2h
21+ x
3h
31
y
2＝x
1h
12+x
2h
22+x
3h
32；
y
3＝x
1h
13+x
2h
23+x
3h
33，
y
1+y
2+y
3＝x
1(h
11+h
12+h
13)+x
2(h
21+h
22+h
23)+x
3(h
31+h
32+h
33)。
y
1, y
2, y
3Enter respectively and independently carry out that low noise amplifier amplifies behind the radio-frequency module and analog to digital converter enters detection module after converting digital signal to, by wherein channel estimation module to x
1, x
2And x
3Three kinds of signal place channels carry out the signal to noise ratio estimation, and detect the channel of signal to noise ratio maximum.In the present embodiment, if detect x
1Channel (h
11, h
12, h
13)
TThe signal to noise ratio maximum, select x then
1Signal, and with x
1Signal input data processing module carries out demodulation, separates data processing such as spread spectrum and decoding by data processing module, at last with the x that handles
1Signal storage has so just been finished the ground floor data processing to memory.
When finishing x
1After the data processing of signal, detection module is by interference cancellation module erasure signal x
1, pass through channel estimation module then again to x
2And x
3The channel at signal place carries out the signal to noise ratio estimation, and detects the channel of signal to noise ratio maximum, in the present embodiment, if detect x
2Channel (h
21, h
22, h
23)
TThe signal to noise ratio maximum, select x then
2Signal, and with x
2Signal input data processing module carries out demodulation, separates data processing such as spread spectrum and decoding by data processing module, at last with the x that handles
2Signal storage has so just been finished second layer data processing to memory.Detection module is again by interference cancellation module erasure signal x
3, and with x
3The input data processing module carries out data processing, is stored in the memory at last.
When data processing module has been finished x
1, x
2And x
3Data processing after, all be stored in the memory, by combiner the three is combined at last, the reduction initial data.
Above-mentioned example only is for circulation layer treatment technology of the present utility model is described, the number of antennas and the channel matrix of concrete data processing and employing all need to be decided according to the actual requirements, and do not limit at this.
In the utility model, the number of times that channel estimation module and data processing module carry out the datacycle processing is identical with the number of radio-frequency antenna, the radio-frequency antenna that above-mentioned example adopts is 3, and then to carry out the number of times that datacycle handles be 3 times for channel estimation module and data processing module.
In sum, the Zigbee receiving system of many inputs of the present utility model and method are by adopting many separate antennas, make the sensitivity of system's received signal improve greatly, and improved the elimination ability of system to interference signal, the Zigbee receiving system of this many inputs can also be suitable in the complex environment, solved single input pattern received signal under complex environment as during the transmission of wireless multipath received signal quality seriously descend even do not receive signal, signal covers sharply and reduces, and received signal throughput or frequency spectrum obviously descend the degradation problem.
The foregoing description is the utility model preferred implementation; but execution mode of the present utility model is not restricted to the described embodiments; other any do not run counter to change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection range of the present utility model.
Claims (5)
- More than one kind the input the Zigbee receiving system, it is characterized in that described device comprises that two or more are used for the radio-frequency antenna of received RF signal, be used to handle radio-frequency module from the radiofrequency signal of each described radio-frequency antenna reception, be used for the signal of described radio-frequency module output is carried out the detection module that layering is handled, be used to handle data processing module from each layer data of described detection module output, be used to eliminate the interference cancellation module of interference signal, be used to store the memory of each layer data after described data processing module is handled and the combiner that the multi-layer data in the described memory is merged; Described two or more radio-frequency antennas are connected with described radio-frequency module respectively, and described radio-frequency module, detection module, data processing module, memory and combiner are connected successively according to signal processing flow; The output of described data processing module links to each other with described interference cancellation module with described memory respectively, and the output of described interference cancellation module is connected with described detection module.
- 2. the Zigbee receiving system of many inputs according to claim 1, it is characterized in that, described data processing module comprises and is used to separate from the carrier signal and the modulation signal of described detection module output and obtains the demodulator of modulation signal, is used for the decoder that wideband spread-spectrum signal is separated the despreader of spread spectrum and is used for the signal of described despreader output is decoded; Described demodulator, despreader and decoder are connected successively according to signal processing flow, the output of described detection module is connected with described demodulator, the output of described decoder is connected with described interference cancellation module and described memory respectively, and the output of described interference cancellation module is connected with described detection module.
- 3. the Zigbee receiving system of many inputs according to claim 2 is characterized in that, the mode that described interference cancellation module adopts iteration interference eliminated or adaptive disturbance to eliminate is carried out interference eliminated.
- 4. the Zigbee receiving system of many inputs according to claim 1 is characterized in that described detection module comprises channel estimation module, is used to detect the signal to noise ratio from the multiple signals place channel of described radio-frequency module output.
- 5. the Zigbee receiving system of many inputs according to claim 1, it is characterized in that, described radio-frequency module also comprises low noise amplifier and analog to digital converter, and the signal of described radio-frequency antenna output amplifies and analog to digital converter is exported to described detection module after converting digital signal to through described low noise amplifier.
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| CN 201320097590 CN203086473U (en) | 2013-03-01 | 2013-03-01 | Multi-input Zigbee receiving device |
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| CN 201320097590 CN203086473U (en) | 2013-03-01 | 2013-03-01 | Multi-input Zigbee receiving device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166693A (en) * | 2013-03-01 | 2013-06-19 | 深圳市睿海智电子科技有限公司 | Multi-input Zigbee receiving device and multi-input Zigbee receiving method |
-
2013
- 2013-03-01 CN CN 201320097590 patent/CN203086473U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166693A (en) * | 2013-03-01 | 2013-06-19 | 深圳市睿海智电子科技有限公司 | Multi-input Zigbee receiving device and multi-input Zigbee receiving method |
| CN103166693B (en) * | 2013-03-01 | 2016-05-25 | 深圳市睿海智电子科技有限公司 | A kind of Zigbee receiving system and method thereof of many inputs |
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| DD01 | Delivery of document by public notice |
Addressee: Chen Zhihua Document name: Notification of Passing Examination on Formalities |
|
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Chen Zhihua Document name: Notice of conformity |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yin Wu Assignor: Shenzhen Wissea Electronic Science & Technology Co.,Ltd. Contract record no.: 2013440020270 Denomination of utility model: Multi-input Zigbee receiving device and multi-input Zigbee receiving method Granted publication date: 20130724 License type: Common License Record date: 20130912 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 |
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| CF01 | Termination of patent right due to non-payment of annual fee |