CN104981006B - Terminal is in the wide method and device for receiving dynamic range and obtaining radio frames power envelope - Google Patents
Terminal is in the wide method and device for receiving dynamic range and obtaining radio frames power envelope Download PDFInfo
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- CN104981006B CN104981006B CN201410143028.0A CN201410143028A CN104981006B CN 104981006 B CN104981006 B CN 104981006B CN 201410143028 A CN201410143028 A CN 201410143028A CN 104981006 B CN104981006 B CN 104981006B
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- dynamic range
- power envelope
- power
- envelope
- reference power
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
The present invention proposes a kind of method that terminal obtains radio frames power envelope in wide reception dynamic range, the following steps are included: a, width is received into dynamic range and is divided into k sections of narrow dynamic ranges, k >=2, without departing from the dynamic mapping range of analog-digital converter, adjacent narrow dynamic range partly overlaps the length of every section narrow dynamic range two-by-two；B chooses a reference power point from every section narrow dynamic range, the corresponding gain of reference power point is searched in reception gain table, K gain is obtained；K gain receiver radio frames are respectively adopted in c, terminal, generate K power envelope；D, K power envelope of fitting obtain correct power envelope: narrow dynamic range of the signal value as current demand signal exact value, where signal value reference power point corresponding without departing from power envelope where it is chosen in the current signal value of K power envelope.The invention also provides corresponding device, the present invention can simplify terminal processes process, reduce hardware cost expense.
Description
Technical field
Dynamic range, which is received, in width the present invention relates to wireless communication field more particularly to a kind of terminal obtains radio frames power
The method and device of envelope.
Background technique
The reception gain table of terminal shows the corresponding relationship between input power and reception gain, terminal selection setting one
After a appropriate reception gain, it will be able to be obtained in certain input power range and meet the radio frames power packet that demodulation requires
Network, however when the variation range for receiving signal exceeds a certain range, if still by the way of fixed gain setting, by
It is limited in the dynamic range of terminal low-noise amplifier and analog-digital converter, it is impossible to obtain correct radio frames power packet
Network.
In order to enable terminal remains to obtain correct radio frames power envelope in the case where width receives dynamic range, the prior art is logical
Frequently with real-time estimation adjust gain is carried out to signal to expand the software approach of dynamic range, or it is big dynamic using configuration satisfaction
The method of the hardware of state range.Although these existing methods can obtain correct under a degree of wide reception dynamic range
Radio frames power envelope, however the expense of complicated process flow or increase hardware cost can be introduced in terminal side, influence terminal
Treatment effeciency and product realize.
Summary of the invention
For overcome the deficiencies in the prior art, invention proposes a kind of terminal and obtains radio frames in the case where width receives dynamic range
The method of power envelope, method includes the following steps:
Width is received dynamic range and is divided into k sections of narrow dynamic ranges by a, k >=2, the length of every section narrow dynamic range without departing from
The dynamic mapping range of analog-digital converter, adjacent narrow dynamic range partly overlap two-by-two；
B chooses a reference power point from every section narrow dynamic range, and searches the reference power in reception gain table
The corresponding gain of point, is obtained K gain；
C, the K gain receiver radio frames are respectively adopted in terminal, corresponding to generate K power envelope；
D, K power envelope of fitting obtain correct power envelope: choosing one in the current signal value of K power envelope
A signal value is as current demand signal exact value, and the signal value is without departing from where its corresponding reference power point of place power envelope
Narrow dynamic range.
Preferably, the length of every section narrow dynamic range is all the same in step a, further, the two of adjacent narrow dynamic range
The length of two laps is all the same.Further, the interval in step b between neighboring reference power points is identical, is equal to
The relative displacement length two-by-two of adjacent narrow dynamic range.
Preferably, step c specifically: according to the sequence of K reference power point from small to large, successively judge current reference function
Whether the current signal value of the corresponding power envelope of rate point is less than the maximum value of the narrow dynamic range where current reference power points,
If it is less than then using the signal value as current demand signal exact value, otherwise continuing to judge next reference power point, until finding
Signal exact value.
Preferably, step c specifically: according to the sequence of K reference power point from big to small, successively judge current reference function
Whether the current signal value of the corresponding power envelope of rate point is greater than the minimum value of the narrow dynamic range where current reference power points,
If it is greater than then using the signal value as current demand signal exact value, otherwise continuing to judge next reference power point, until finding
Signal exact value.
The present invention also proposes that a kind of terminal obtains the device of radio frames power envelope, the device under wide reception dynamic range
Positioned at terminal inner, including following part:
Width receives dynamic range division unit, is divided into k sections of narrow dynamic ranges for width to be received dynamic range, k >=2, often
The length of the narrow dynamic range of section is without departing from the dynamic mapping range of analog-digital converter, adjacent two two parts weight of narrow dynamic range
It is folded；
Gain setting unit, for choosing a reference power point from every section narrow dynamic range, and in reception gain table
Middle lookup corresponding gain of reference power point, is obtained K gain；
Power envelope generation unit, it is corresponding to generate K power envelope for using the K gain receiver radio frames；
Power envelope fitting unit obtains correct power envelope for being fitted K power envelope: in K power envelope
Current signal value in choose a signal value be used as current demand signal exact value, the signal value without departing from its place power envelope pair
Narrow dynamic range where the reference power point answered.
The present invention overcomes the limited docking of the dynamic range of low-noise amplifier and analog-digital converter to receive range of signal
Limitation, realize wide receive and correctly obtain radio frames power envelope under dynamic range, and simplify the process flow of terminal,
Reduce hardware cost expense.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the schematic diagram that wide reception dynamic range is divided into 4 sections of narrow dynamic ranges of the embodiment of the present invention one；
Fig. 2 is that 4 gains are respectively adopted to receive 4 power envelope figures that signal obtains in the embodiment of the present invention one；
Fig. 3 is the correct power envelope figure after the fitting of the embodiment of the present invention one.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments；It should be noted that in the absence of conflict, in the application
Embodiment and embodiment in feature can be combined with each other.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Embodiment one: terminal is in the wide method for receiving dynamic range and obtaining radio frames power envelope
For the present embodiment is with the wide reception dynamic range of [- 105, a 3] dBm, illustrate how terminal obtains radio frames
Power envelope.Specific implementation step is described below in detail.
Step 1: the wide reception dynamic range of [- 105,3] dBm is divided into 4 sections of narrow dynamic ranges.
For every section narrow dynamic range, required in order to enable can be obtained using fixed gain and meet demodulation
Radio frames power envelope, length should be without departing from the dynamic mapping range of analog-digital converter.Assuming that the dynamic of analog-digital converter
Transformation range is 42dB, and the length that every section narrow dynamic range is arranged in the present embodiment as shown in Figure 1 is 33dBm, that is, reserves 9dB
Saturation range.In addition, for the seamless fitting power envelope of subsequent step energy, adjacent narrow dynamic range answers two two parts weights
Folded, in order to balance the grain fineness of power envelope, the length that the lap of adjacent narrow dynamic range is arranged is the present embodiment
8dBm.Then the width of [- 105,3] dBm receives dynamic range after dividing, 4 sections of obtained narrow dynamic ranges are as follows: [- 105, -72]
DBm, [- 80, -47] dBm, [- 55, -22] dBm and [- 30,3] dBm.
Step 2: choosing a reference power point from every section narrow dynamic range, and the ginseng is searched in reception gain table
The corresponding gain of power points is examined, 4 gains are obtained.
For the present embodiment in order to balance the grain fineness of power envelope, the interval being arranged between neighboring reference power points is equal to phase
The relative displacement length two-by-two of adjacent narrow dynamic range is that the length 33dBm of the narrow dynamic range of 25dBm(subtracts overlapping portion
The length 8dBm divided), 4 reference power points are -75, -50 respectively, then -25,0dBm are searched in reception gain table and obtained
Corresponding 4 gains.Obviously have:
(1) when the gain shift of use -75dBm, the correct amplitude of available [- 105, -72] dBm signal；
(2) when the gain shift of use -50dBm, the correct amplitude of available [- 80, -47] dBm signal；
(3) when the gain shift of use -25dBm, the correct amplitude of available [- 55, -22] dBm signal；
(4) when using the gain shift of 0dBm, the correct amplitude of available [- 30,3] dBdBm signal.
In this way by 4 reception gain gears of setting, the signal from -105dBm to 3dBm can access correct solution
Analysis.
Step 3: 4 gain receiver radio frames are respectively adopted in terminal, the corresponding power envelope of each gain is respectively obtained.
Fig. 2 be the present embodiment 4 reception gains are respectively adopted after, obtained 4 power envelopes.To this several power packets
Network is fitted, and obtains the energy envelope situation of the final preferable reaction signal of power envelope energy.
Step 4: corresponding 4 power envelopes of 4 gain shifts of fitting, obtain correct power envelope
Follow the principle for not allowing signal to overflow distortion, fitting power envelope curve.Approximating method of the present invention are as follows: in 4 function
A signal value is chosen in the current signal value of rate envelope as current demand signal exact value, the signal value is without departing from power where it
Narrow dynamic range where the corresponding reference power point of envelope.The present embodiment according to reference power point sequence from small to large successively
Judgement, since -75dBm gain shift, whether the current signal strength in the power envelope of judgement -75dBm gain shift is small
In -72dBm, if it is less than -72dBm, then the signal strength indication using -75dBm gain shift can accurately obtain signal
Power, if it is greater than or equal to -72dBm, theoretically setting -50dBm gain shift can more accurately obtain signal, then continue to sentence
The current signal strength of the power envelope of disconnected -50dBm gain shift, judgment criteria is as -75dBm gain shift, with this
Analogize, until finding current demand signal exact value.The signal exact value at final each moment constitutes a correct power
Envelope, as shown in Figure 3.
Similarly, step 4 can also successively judge according to the sequence of reference power point from big to small, from 0dBm gain shift
Start, judges whether the current signal strength in the power envelope of 0dBm gain shift is greater than -30dBm, if it is greater than -30dBm,
So can accurately obtain signal power using the signal strength indication of 0dBm gain shift, if it is less than or be equal to -30dBm,
Theoretically setting -25dBm gain shift can more accurately obtain signal, then continue the power envelope of judgement -25dBm gain shift
Current signal strength, judgment criteria as 0dBm gain shift, and so on, be until finding current demand signal right value
Only.
Embodiment two: terminal is in the wide device for receiving dynamic range and obtaining radio frames power envelope
The device of the present embodiment is located at terminal inner, including following part:
Width receives dynamic range division unit, is divided into k sections of narrow dynamic ranges for width to be received dynamic range, k >=2, often
The length of the narrow dynamic range of section is without departing from the dynamic mapping range of analog-digital converter, adjacent two two parts weight of narrow dynamic range
It is folded, wherein the length of every section narrow dynamic range is all the same, and the length of the lap two-by-two of adjacent narrow dynamic range is all the same；
Gain setting unit, for choosing a reference power point from every section narrow dynamic range, and in reception gain table
Middle lookup corresponding gain of reference power point, is obtained K gain, wherein and the interval between neighboring reference power points is identical,
It is equal to the relative displacement length two-by-two of adjacent narrow dynamic range；
Power envelope generation unit, it is corresponding to generate K power envelope for using the K gain receiver radio frames；
Power envelope fitting unit obtains correct power envelope for being fitted K power envelope, and the unit is according to K
The sequence of reference power point from small to large, successively judge the corresponding power envelope of current reference power points current signal value whether
The maximum value of narrow dynamic range where less than current reference power points, if it is less than then using the signal value as current demand signal standard
Really value, otherwise continues to judge next reference power point, until finding signal exact value.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
The various media that can store program code such as disk.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (12)
1. the method that terminal obtains radio frames power envelope under wide reception dynamic range, which is characterized in that the method includes
Following steps:
Width is received dynamic range and is divided into k sections of narrow dynamic ranges by a, and k >=2, the length of every section narrow dynamic range is without departing from modulus
The dynamic mapping range of converter, adjacent narrow dynamic range partly overlap two-by-two；
B chooses a reference power point from every section narrow dynamic range, and searches the reference power point pair in reception gain table
K gain is obtained in the gain answered；
C, the K gain receiver radio frames are respectively adopted in terminal, corresponding to generate K power envelope；
D, K power envelope of fitting obtain correct power envelope: a letter is chosen in the current signal value of K power envelope
Number value is used as current demand signal exact value, narrow dynamic where signal value reference power point corresponding without departing from power envelope where it
State range.
2. according to the method described in claim 1, it is characterized in that step a, the length of every section narrow dynamic range are all the same.
3. according to the method described in claim 2, it is characterized in that step a, the lap two-by-two of adjacent narrow dynamic range
Length is all the same.
4. according to the method described in claim 3, the interval between neighboring reference power points is identical, it is characterized in that step b
Equal to the relative displacement length two-by-two of adjacent narrow dynamic range.
5. one of method according to claims 1 to 4, which is characterized in that step c specifically: according to K reference power point
Sequence from small to large, successively judges whether the current signal value of the corresponding power envelope of current reference power points is less than current ginseng
The maximum value for examining the narrow dynamic range where power points, if it is less than then using the signal value as current demand signal exact value, otherwise
Continue to judge next reference power point, until finding signal exact value.
6. one of method according to claims 1 to 4, which is characterized in that step c specifically: according to K reference power point
Sequence from big to small, successively judges whether the current signal value of the corresponding power envelope of current reference power points is greater than current ginseng
The minimum value for examining the narrow dynamic range where power points, if it is greater than then using the signal value as current demand signal exact value, otherwise
Continue to judge next reference power point, until finding signal exact value.
7. the device that terminal obtains radio frames power envelope under wide reception dynamic range, which is characterized in that described device is located at
Terminal inner, including following part:
Width receives dynamic range division unit, is divided into k sections of narrow dynamic ranges for width to be received dynamic range, k >=2 are every section narrow
Without departing from the dynamic mapping range of analog-digital converter, adjacent narrow dynamic range partly overlaps the length of dynamic range two-by-two；
Gain setting unit for choosing a reference power point from every section narrow dynamic range, and is looked into reception gain table
The corresponding gain of reference power point is looked for, K gain is obtained；
Power envelope generation unit, it is corresponding to generate K power envelope for using the K gain receiver radio frames；
Power envelope fitting unit obtains correct power envelope for being fitted K power envelope: in working as K power envelope
A signal value is chosen in front signal value as current demand signal exact value, the signal value is corresponding without departing from power envelope where it
Narrow dynamic range where reference power point.
8. device according to claim 7, which is characterized in that every section narrow dynamic is arranged in wide reception dynamic range division unit
The length of range is all the same.
9. device according to claim 8, which is characterized in that wide reception dynamic range division unit setting adjacent narrow dynamic
The length of the lap two-by-two of range is all the same.
10. device according to claim 9, which is characterized in that gain setting unit is arranged between neighboring reference power points
Interval it is identical, be equal to the relative displacement length two-by-two of adjacent narrow dynamic range.
11. one of device according to claim 7~10, which is characterized in that power envelope fitting unit is referred to according to K
The sequence of power points from small to large, successively judges whether the current signal value of the corresponding power envelope of current reference power points is less than
The maximum value of narrow dynamic range where current reference power points, if it is less than then that the signal value is accurate as current demand signal
Value, otherwise continues to judge next reference power point, until finding signal exact value.
12. one of device according to claim 7~10, which is characterized in that power envelope fitting unit is referred to according to K
The sequence of power points from big to small, successively judges whether the current signal value of the corresponding power envelope of current reference power points is greater than
The minimum value of narrow dynamic range where current reference power points, if it is greater than then that the signal value is accurate as current demand signal
Value, otherwise continues to judge next reference power point, until finding signal exact value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410143028.0A CN104981006B (en) | 2014-04-10 | 2014-04-10 | Terminal is in the wide method and device for receiving dynamic range and obtaining radio frames power envelope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410143028.0A CN104981006B (en) | 2014-04-10 | 2014-04-10 | Terminal is in the wide method and device for receiving dynamic range and obtaining radio frames power envelope |
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| Publication Number | Publication Date |
|---|---|
| CN104981006A CN104981006A (en) | 2015-10-14 |
| CN104981006B true CN104981006B (en) | 2018-12-04 |
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| CN201410143028.0A Expired - Fee Related CN104981006B (en) | 2014-04-10 | 2014-04-10 | Terminal is in the wide method and device for receiving dynamic range and obtaining radio frames power envelope |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0812064A2 (en) * | 1996-06-03 | 1997-12-10 | Matsushita Electric Industrial Co., Ltd. | Reception automatic gain control system and method |
| CN1937419A (en) * | 2006-08-10 | 2007-03-28 | 华为技术有限公司 | Receiver and wireless signal receiving method |
| CN102857246A (en) * | 2012-09-17 | 2013-01-02 | 泰凌微电子（上海）有限公司 | Automatic gain control method and apparatus of constant envelope receiver |
| CN202906888U (en) * | 2012-09-17 | 2013-04-24 | 泰凌微电子（上海）有限公司 | Automatic gain control device for constant envelop receiver |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7127223B2 (en) * | 2004-09-09 | 2006-10-24 | Navini Networks, Inc. | Proactive gain control system for communications receivers |
-
2014
- 2014-04-10 CN CN201410143028.0A patent/CN104981006B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0812064A2 (en) * | 1996-06-03 | 1997-12-10 | Matsushita Electric Industrial Co., Ltd. | Reception automatic gain control system and method |
| CN1937419A (en) * | 2006-08-10 | 2007-03-28 | 华为技术有限公司 | Receiver and wireless signal receiving method |
| CN102857246A (en) * | 2012-09-17 | 2013-01-02 | 泰凌微电子（上海）有限公司 | Automatic gain control method and apparatus of constant envelope receiver |
| CN202906888U (en) * | 2012-09-17 | 2013-04-24 | 泰凌微电子（上海）有限公司 | Automatic gain control device for constant envelop receiver |
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| CN104981006A (en) | 2015-10-14 |
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