CN1452336A - Full-adaptive-weigh module intelligent antenna receiving method and device - Google Patents
Full-adaptive-weigh module intelligent antenna receiving method and device Download PDFInfo
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Abstract
An all adaptive-weigh-module weight update device for array antenna is composed of antenna array, RF channel, digital wave beam shaping unit, despreading-descrambling unit, error calculation unit, weight calculation unit and weight choosing unit. Its method includes front-end RF treating, weighting summerizing, conjugate multiplying with PN code, sending the resultant data and reference data to weight update module, choosing system weight for next period, and updating weight. Its advantages are high update effect and optimal received signal.
Description
Technical field
The present invention relates in a kind of radio honeycomb communication system, the Apparatus and method for that the adaptive control of antenna beam of employing array antenna carries out the reception and the transmission of desired signal, the present invention can be applied to adopt the data transmission system of code division multiple access (CDMA, the Code Division Multiple Access) cut-in method of any array way and any duplex mode.
Background technology
Code division multiple access (CDMA) is a kind of multiple access method, and it is based on spread spectrum and become another multi-address method that is applied to cellular wireless system except that existing FDMA (Frequency Division Multiple Access) and TDMA (Time Division MultipleAccess) method recently.Compare with existing method, CDMA has many advantages, and for example availability of frequency spectrum height, planning are simple etc.Just because of this, cdma system becomes main flow in the 3G (Third Generation) Moblie.
Adopt the system of CDMA method to mainly contain now: IS-95 (Q-CDMA) system, WCDMA (Wideband CodeDivision Multiple Access) system, the Cdma2000 system, TD-SCDMA (TimeDivision-Space-Code Division Multiple Access) system, TD-CDMA (Time Division-Code Division Multiple Access) system etc.Adopt many yards spread spectrums in these systems or claimed double-deck spreading code distribution technology, that is to say in these cdma systems, the spread spectrum mode of the up link from mobile subscriber to the base station can be divided into for two steps, the first step is with the good orthogonal function of cross-correlation performance (Walsh function, OVSF (Orthogonal Variable Spreading Factor) sign indicating number) as the channel code spread spectrum, might as well be called this step herein and add expansion, the recovery process of corresponding receiving terminal is called despreading; The autocorrelation performance of the unique distribution of second step each user of use is pseudo noise code (PN sequence preferably, the M sequence, the Gold sequence) further spread spectrum, can be called scrambling to second step herein, the recovery process of corresponding receiving terminal is called descrambling, above-mentioned pseudo noise code is called scrambler, distinguishes different mobile subscribers with scrambler.Equally, the spread spectrum mode of the down link in these systems from the base station to mobile subscriber is also divided the two same steps, and unique difference is that the scrambler in the up link is used for distinguishing base station or sub-district, the scrambler difference of different base stations or sub-district.In the digital radio communication system, owing to there is the interference of various noises, multipath and decline in the space channel, so the character of the received signal of receiver is not very good.For received signal effectively, adopted multiple technologies to improve the receptivity of system in the receiver system, as RAKE folding in the cdma system etc.
In cdma system, many users use identical frequency band to communicate.Owing to can not design mutual fully incoherent spreading code set, so still exist the phase mutual interference between the different user.In general, the number of users in a frequency band is many more, and interference level is just high more, and the communication quality of link is just poor more.Therefore, cdma system is an interference-limited wireless communication system, the number of channel that the frequency band of its each Rack can hold is limited, so aforesaid various technological means can only be brought up to capability of communication system to a certain degree, want to surpass this limit then must corresponding increase other resource.Space diversity is to increase power system capacity and the latest technology of improving systematic function, the analysis showed that in theory as long as correctly use one group of antenna, forms the new degree of freedom and space, just can increase power system capacity significantly.In addition, adopt space diversity can also reduce power consumption, increase anti-fading and antijamming capability, more effectively switch and better fail safe and system robustness.
In the existing cdma system, adopted pilot channel to transmit frequency pilot sign usually, dual mode is wherein arranged, a kind of is the dedicated pilot (channel) mode, the continuous pilot symbol transmitted of this mode.Another kind is to insert pilot channel system, and this mode is multiplexing in time frequency pilot sign and out of Memory symbol, and pilot symbol transmitted in the time period that has does not have frequency pilot sign to be sent out in the time period that has.
For the different spaces characteristic of further utilizing unlike signal improves systematic function, a lot of people have studied intelligent antenna technology, the array antenna technology of also challenging an opponent to a fight when two armies meet.Smart antenna adopts plural single antenna array element to form antenna array, the signal that each array element receives carries out being weighted summation with proper weight through after the radio frequency processing, just can reach the effect of directional reception, a weighted vector correspondence certain beam pattern.The essence of weighting is a kind of space filtering, and smart antenna also can be thought a kind of space division multiple access (SDMA, Space Division MultipleAccess) technology.In SDMA, pass through the aerial array received signal, and carry out digital beam forming (DBF, Digital Beam Forming), make the signal to noise ratio maximum of desired signal by Digital Signal Processing.This is by the phase place of adjusting the signal that aerial array received and amplitude desired signal to be strengthened by the addition summation, and other interference signal obtains weakening realization by the addition summation.
General antenna system structure as shown in Figure 1, the output signal of each bay and the output of the smart antenna processing by the smart antenna method obtains the corresponding one group of weights of each aerial array; These group weights multiply by after the antenna output, each results added just can be obtained the output of antenna system.Wireless signal enters system by aerial array 10, and wherein aerial array 10 is made of a plurality of bays (101-103).The signal of antenna output passes through radio-frequency channel (110-113) separately respectively, is weighted summation at signal synthesis unit 12, and the later system of input handles behind the formation one-dimensional signal.And the weights coefficient in the signal synthesis unit 12 is provided by smart antenna method module 13.
Smart antenna can divide three kinds substantially, and a kind of is the switched-beam smart antenna.This method is to preestablish the wave beam weight that some point to different directions, and reasonable those wave beam weight weighted results of selective reception signal are carried out subsequent treatment in communication process.This method simple in structure do not relate to matrix operation, is convenient to hardware and realizes.
Second kind is the part adaptive smart antenna, this implementation extracts desired user direction of arrival of signal angle information usually from the array signal that receives, form then and point to the wave beam that arrives deflection, weights also and then change if arrival direction angle (DOA, Direction Of Arrival) changes then.The criterion of this method is to make the desired user signal energy maximum that receives, and suppresses the interference of other direction simultaneously limitedly.
Another kind is the fully adaptive smart antenna, the weights of this antenna do not need to set in advance, bring in constant renewal in weights but press certain criterion according to the variation of signal space distribution character, the amplitude of weights and phase place can be upgraded freely, and the spatial character that this method can make full use of desired user signal and interference signal when update method restrains makes the Signal to Interference plus Noise Ratio of the signal that receives reach maximum.
Fully adaptive type smart antenna has following advantage in these three kinds of structures:
Fully adaptive type smart antenna is with respect to switched-beam type smart antenna, the received beam of its formation is narrower, " zero falls into " (promptly making signal strength signal intensity by weighted sum on main interference radiating way is zero) can formed on the main interference radiating way, and its tracking velocity is also higher.
Fully adaptive type smart antenna is with respect to part self-adaptation type smart antenna, and its algorithm is simple relatively, can not need matrix operation, and the data volume that computing needs is less, so right value update speed is higher, and corresponding tracking velocity is also higher.
Fully adaptive type intelligent antenna weight value formation method is divided into adaptive approach that study is arranged and blind adaptive approach.There is the adaptive approach of study to be meant and has known symbol sebolic addressing, the weights that corresponding its receiving sequence comes the adaptive learning antenna system to need.Blind adaptive approach is meant and does not comprise known symbol sebolic addressing in the input signal, regulates weights according to certain criterion self adaptation fully, makes the criterion value optimum.In blind adaptive approach, a kind of weighing apparatus modeling method is arranged, described weighing apparatus modeling method is to utilize only to have two kinds of possible symbols in the digital communication system :+1 and-1 characteristic carry out that adaptive weight adjusts.
For the adaptive approach that study is arranged, owing to wherein contain a large amount of Given informations, its convergence rate height, convergence might as well.In various cdma systems, generally there is pilot channel, can be used for carrying out adaptive learning.But the signal that actual reception arrives generally be I, Q two-way, and pilot signal only exists only among one the tunnel.Consider the influence of receiving phase, actual pilot energy generally all exists among two-way, need take all factors into consideration.After finishing the despreading descrambling of received signal, need get imaginary part (real part) computing to resulting signal.So, increase the difficulty that method is derived on the one hand, also can cause the loss of information on the other hand.
For blind adaptive approach, its relation with system signal is relative less, can use equally for the time that does not have pilot tone.But this method Given information deficiency, its possibility that erroneous judgement occurs is higher.
Summary of the invention
The present invention has been in order to have overcome two kinds of methods of the prior art shortcoming separately, solves two kinds of methods existing in prior art problem independently separately, proposed the following technical issues that need to address.
One of the technical problem to be solved in the present invention is to propose a kind of simple and effective array antenna full-adaptive-weigh module weight renewing method in conjunction with the advantage of two kinds of methods that is applicable to cdma system, make it both to be suitable for adopting the communication system of inserting pilot channel, also be suitable for adopting the communication system of dedicated pilot (channel).
Two of the technical problem to be solved in the present invention is that a kind of hardware size of proposition is less, realizes the also lower array antenna full-adaptive-weigh module right value update device of cost.
The present invention proposes a kind of array antenna full-adaptive-weigh module weight renewing method, may further comprise the steps:
First step radio-frequency front-end is handled, and is about to aerial wireless signal and is converted into baseband digital signal for subsequent module for processing;
Second step was weighted summation with resulting data with current wave beam weight;
The 3rd step is second signal that obtain of step and the conjugate multiplication of PN sign indicating number, obtains the information data behind the despreading descrambling;
The 4th step with second information data that obtain of step and corresponding reference signal (comprise respective antenna array element input signal, known pilot symbols and another road+1 and-1 symbol) etc. data send into the right value update module; Obtain the right value update coefficient of correspondence+1 and-1 respectively;
The 5th step was selected system's weights of next cycle;
The 6th step was carried out right value update for corresponding weights.
The present invention proposes a kind of array antenna full-adaptive-weigh module right value update device, comprising: aerial array, radio-frequency channel; It is characterized in that, comprise that also digital beam forming unit (20), despreading descrambling unit (21), error find the solution unit (22), weight calculation unit (23) and weights selected cell (24);
The signal that described digital beam forming unit is exported the radio-frequency channel with weights is weighted summation, outside the digital signal of its input receiving RF channel output, also the weights output with described right value update module (23) links to each other, and its output is linked the input of described despreading descrambling unit (21);
Described despreading descrambling unit is used to produce PN sign indicating number (comprising scrambler and channel code), and finishes the conjugate multiplication of input signal and PN sign indicating number, and its output connects error and finds the solution unit (22);
Described error is found the solution the unit and is produced known pilot symbols, and carries out asking for function with the error of input signal; Respectively there is a unit symbol+1 and-1 on corresponding another road in system, and they are independently; Its output offers weight calculation unit (23);
Described weight calculation unit (23), its input signal has: the circuit-switched data, the error signal data that contain pilot frequency information after the dateout of corresponding radio-frequency channel, the descrambling; Obtain one group of new complex-valued weights by the right value update algorithm, then weights selected cell (24) is sent in this cover complex-valued weights output;
Described weights selected cell (24) is used for determining the size of two weights, selects to change less weights variable quantity and exports to digital beam forming unit (20).
Above structure can directly apply to the cdma system of dedicated pilot.Be in the time of pilot tone for inserting navigation system, carry out the right value update operation.And for the no pilot tone stage, can not carry out right value update, perhaps all adopt the weighing apparatus modeling method to carry out adaptive weight value updating to two paths of signals.
Adopt the method for the invention and device, compared with prior art, adopt more effectively weight renewing method, reached raising system right value update reliability effect.
The method of the invention and device are compared with existing intelligent antenna technology, at first, combine the adaptive approach of study and the advantage of blind two kinds of methods of adaptive approach, can obtain more desirable adaptive weight value updating effect; Secondly, the present invention has directly realized the fully adaptive smart antenna solutions of received signal best performance, can not only form very strong beam gain at the arrival direction of desired user signal, and can adapt to the wireless signal environment, interference signal is made very objective compacting, received signal best performance of the present invention.
Description of drawings
Fig. 1 is the structural representation of general intelligence antenna;
Fig. 2 is the schematic diagram of the basic structure of apparatus of the present invention;
Fig. 3 is the flow chart of the inventive method;
Fig. 4 is the schematic vector diagram of time division multiplexing right value update among the present invention;
Fig. 5 is time division multiplexing right value update unit 23 and weights selected cell 24 structural representations among the present invention;
Fig. 6 is that the inventive method is at the time-multiplexed embodiment flow chart of WCDMA system;
Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme:
In the prior art, two kinds of methods of the adaptive approach of study and blind adaptive approach only select a road in the two-way baseband signal to carry out computing on Mathematical treatment, obtain weight renewing method.Do not make full use of the full detail of system like this, convergence rate and precision are lower.In order to reach the purpose that two kinds of methods combine, must select two paths of signals to carry out mathematical derivation simultaneously, and then reach higher convergence rate and better convergence precision.But because the symbol on the I road (data channel) in the real system is unknown, therefore needing to propose a kind of prior art does not have the yet system of selection of unwanted refreshing weight, finally determines the weights coefficient that the digital beam forming unit is adopted.Receiving in the time period of frequency pilot sign the situation of dedicated pilot (or have), the known pilot symbols that provides according to the upper strata is used and the corresponding spreading code spread spectrum of transmitting terminal, then with the sequence behind the spread spectrum as a road the reference symbol that has pilot channel.For with common another path channels that exists of pilot channel, adopt the weighing apparatus modeling method, respectively simultaneously with+1 and-1 as with reference to symbol, the reference symbol of two-way is synthesized two total reference symbols.At the reference symbol of answering+1 and-1, as list entries,, the array weights are carried out the renewal of steepest descent method respectively according to minimum mean square error criterion in a period of time with the receiving sequence that contains pilot frequency information before the despreading behind the descrambling.For resulting two weights coefficients, think to change little more realistic physical significance, this is kept system's weights as the next update cycle.So, combine having a few of two kinds of methods, avoided their deficiency, reach best convergence effect.This core of the present invention just place.
General antenna system structure as shown in Figure 1, the output signal of each bay and the output of the smart antenna processing by the smart antenna method obtains the corresponding one group of weights of each aerial array; These group weights multiply by after the antenna output, each results added just can be obtained the output of antenna system.Wireless signal enters system by aerial array 10, and wherein aerial array 10 is made of a plurality of bays (101-103).The signal of antenna output passes through radio-frequency channel (110-113) separately respectively, is weighted summation at signal synthesis unit 12, and the later system of input handles behind the formation one-dimensional signal.And the weights coefficient in the signal synthesis unit 12 is provided by smart antenna method module 13.
Apparatus structure of the present invention as shown in Figure 2, x among the figure
iFor the output signal of each radio frequency unit (i=1,2 ..., N, i are the bay number of antenna system); Y is the output signal after the weighting of process smart antenna, s
0Be the signal after the despreading descrambling, PN is the product signal of scrambler and channel code, s
rBe reference signal (symbol level) that e is the error signal of despreading descrambling result and reference signal, ω
iThe weights of the corresponding array element i that determines for smart antenna module (i=1,2 ..., N).
The present invention proposes a kind of array antenna fully adaptive weight value updating device as shown in Figure 2, comprising: aerial array, radio-frequency channel, and described aerial array comprises two or more bays, its output is received the input of radio-frequency channel; Described radio-frequency channel is corresponding with described aerial array, receives the signal from described aerial array, finishes low noise and amplifies, automatic gain control, demodulation, channel correcting, baseband-converted, A/D sampling, matched filtering; The output of all radio-frequency channels is received the input of digital beam forming unit on the one hand, receives the input of right value update module on the other hand; Weights in the digital beam forming unit are provided by the weights selected cell; It is characterized in that, comprise that also digital beam forming unit 20, despreading descrambling unit 21, error find the solution unit 22, weight calculation unit 23 and weights selected cell 24.For simplicity, omitted aerial array, the radio-frequency channel part that all has in the various antenna systems among Fig. 2.
The signal that described digital beam forming unit is exported the radio-frequency channel with weights is weighted summation, its input is except the digital signal of coming in the radio-frequency channel, also link to each other with the weights output of described right value update module 23, its output is linked the input of described despreading descrambling unit 21;
Described despreading descrambling unit is used to produce PN sign indicating number (comprising scrambler and channel code), and finishes the conjugate multiplication of input signal and PN sign indicating number.Its output connects error and finds the solution unit 22;
Described error is found the solution unit 22 and is produced known pilot symbols (Q road), and carries out asking for function with the error of input signal; Respectively there is a unit symbol+1 and-1 on corresponding another road (I road) in system, and they are independently, and its output offers weight calculation unit 23;
Described weight calculation unit 23, its input signal has: the circuit-switched data, the error signal data that contain pilot frequency information after the dateout of corresponding radio-frequency channel, the descrambling; Obtain one group of new complex-valued weights by the right value update algorithm, then weights selected cell 24 is sent in this cover complex-valued weights output;
Described weights selected cell 24 is determined the size of two weights, selects to change less weights variable quantity and exports to digital beam forming unit 20.
Fig. 3 is the flow chart of the inventive method.Wherein, the 4th step in the corresponding the inventive method of weights solution procedure is carried out in right respectively+1 and-1, and the information acquisition that promptly fully utilizes I, Q two-way is the ideal system convergence property more.And the 5th step in the corresponding the inventive method of weights selection step, the more close calculating weights of weights coefficient ratio of selection and current use, the stability of assurance system.This two the step be the characteristics that the present invention is different from other existing systems, their common guarantee the superperformance of system of the present invention.
Full-adaptive-weigh module intelligent antenna right value update apparatus and method in conjunction with among Fig. 2 and Fig. 3 can arrive the requirement of more excellent convergence rate and precision.But for the further cost of reduction system, when real system is realized, can also be based on time-division multiplex technology, in the regular hour section only to the weights coefficient right value update adaptively that is shifted.Consider that the relative right value update cycle of actual user's signal is slowly to change, this time-multiplexed method is feasible.With the WCDMA system is example, and the wave beam of the minimum that general array antenna can reach is about about 10 degree, and the inventive method just can reach convergence within a frame (10ms).The WCDMA system allow user's maximal rate be 500km/hr (kilometer/hour), supposing the system adopts the circular antenna array (allowing angle of coverage is 360 °) of 8 array elements.Adopt time-multiplexed system of the present invention can effective pickup range antenna for base station 127.5m (rice) to locate the highspeed user of 500km/hr as calculated.This index is enough to the requirement of the system that reaches.For the system that adopts the linear aerial array, because the angle that system need cover is littler, so convergence rate is faster.
The physical significance (supposing only to carry out self adaptation on both direction) of this time-division multiplexing method has been described at Fig. 4.Among Fig. 4,400 is the position of the weights correspondence of optimum, and 401 is the correspondence position of current weight.410 for adopting the together amount of the required change of refreshing weight of other each weights.421,422 carry out twice self adaptation for the method among the present invention distinguishes corresponding weights variable quantity, and 411 is the long and of this twice variation.As can be seen, 411 and 410 direction difference is very little, and through after the adaptive weight value updating repeatedly, each the parallel weights together time-multiplexed method of method for updating and serial all can converge to optimum weights correspondence position.
At the time division multiplexing of WCDMA system, a computing unit concrete structure of right value update unit 24 and weights selected cell 25 can adopt structure as shown in Figure 5 in the corresponding diagram 2.Comprising: the multiple signals selector 50 of Lian Jieing successively, it is output as the signal of corresponding weights array element to be updated; One dimension right value update computing unit 51, it is output as the variable quantity of right value update; Right value update unit 52, it is output as the weights after the renewal; And corresponding right value update/selected cell 53, on the one hand, control is selected in right value update unit 52, it is output as the system's weights after the renewal.
Wherein, the operation principle of corresponding one dimension right value update computing unit 51 is as follows, by mathematical derivation, obtains the formula of the lowest mean square criterion of the one dimension right value update under the WCDMA system condition:
ω(k+1)＝ω(k)+Δω(k)
Δ ω (k)=-μ grad (J (k)) and
Wherein, subscript R represents corresponding real, and subscript I represents the imaginary part of corresponding plural number.Replace the purpose that ω (k) reaches system's weights coefficient update by continuous with ω (k+1).
Take all factors into consideration the speed and the stability of right value update, each time slot upgrades weights, promptly can finish the once renewal of whole weights at M time slot.
At the flow chart of WCDMA system time division multiplexing implementation method as shown in Figure 6.At above time-multiplexed application, the inventive method is improved to following step:
First step radio-frequency front-end is handled, and is about to aerial wireless signal and is converted into baseband digital signal for subsequent module for processing;
Second step was weighted summation with resulting data with current wave beam weight;
The 3rd step was carried out conjugate multiplication with the PN sign indicating number to second signal that obtain of step, obtained the information data behind the despreading descrambling;
The 4th goes on foot the bay that selective sequential according to the rules needs refreshing weight;
The 5th step with the 3rd information data that obtain of step and corresponding reference signal (comprise respective antenna array element input signal, known pilot symbols and another road+1 and-1 symbol) etc. data send into the right value update module; Carrying out weights for corresponding weights calculates;
The 6th step selected to obtain the right value update coefficient of correspondence+1 and-1;
The weights coefficient of the 7th step update system.
Proposed a kind of learning adaptive among the present invention and received weight renewing method with the antenna system that weighing apparatus mould blind adaptive combines.This method can comprehensive two kinds of methods advantage, improved the adaptive convergence rate and the reliability of system.
The present invention also proposes a kind of implement device that only a bay is carried out adaptive optimization a moment.Can utilize time-division multiplex technology when hardware is realized, the hardware cost that greatly reduces has reduced the cost of system simultaneously.
Claims (7)
1, a kind of full-adaptive-weigh module intelligent antenna receiving method may further comprise the steps:
First step radio-frequency front-end is handled, and is about to aerial wireless signal and is converted into baseband digital signal for subsequent module for processing;
Second step was weighted summation with resulting data with current wave beam weight;
The 3rd step is second signal that obtain of step and the conjugate multiplication of PN sign indicating number, obtains the information data behind the despreading descrambling;
The 4th step was sent data such as second information data that obtain of step and corresponding reference signal into the right value update module; Obtain the right value update coefficient of correspondence+1 and-1 respectively;
The 5th step was selected system's weights of next cycle;
The 6th step was carried out right value update for corresponding weights.
2, full-adaptive-weigh module intelligent antenna receiving method as claimed in claim 1 is characterized in that: between the 3rd step and the 4th step, also comprise the bay of the required refreshing weight of selective sequential according to the rules.
3, full-adaptive-weigh module intelligent antenna receiving method as claimed in claim 1, it is characterized in that: described the 5th step is selected system's weights of next cycle, two weights coefficients that comprise more resulting correspondence+1 and-1 will change the system weights of little weights coefficient reservation as the next update cycle.
4, full-adaptive-weigh module intelligent antenna receiving method as claimed in claim 1 is characterized in that: described the 4th step corresponding reference signal comprise respective antenna array element input signal, known pilot symbols and another road+1 and-1 symbol or the like data.
5, a kind of full-adaptive-weigh module intelligent antenna receiving system comprises: aerial array, radio-frequency channel; It is characterized in that, comprise that also digital beam forming unit (20), despreading descrambling unit (21), error find the solution unit (22), weight calculation unit (23) and weights selected cell (24);
The signal that described digital beam forming unit is exported the radio-frequency channel with weights is weighted summation, outside the digital signal of its input receiving RF channel output, also the weights output with described right value update module (23) links to each other, and its output is linked the input of described despreading descrambling unit (21);
Described despreading descrambling unit is used to produce PN sign indicating number (comprising scrambler and channel code), and finishes the conjugate multiplication of input signal and PN sign indicating number, and its output connects error and finds the solution unit (22);
Described error is found the solution the unit and is produced known pilot symbols, and carries out asking for function with the error of input signal; Respectively there is a unit symbol+1 and-1 on corresponding another road in system, and they are independently; Its output offers weight calculation unit (23);
Described weight calculation unit (23), its input signal has: the circuit-switched data, the error signal data that contain pilot frequency information after the dateout of corresponding radio-frequency channel, the descrambling; Obtain one group of new complex-valued weights by the right value update algorithm, then weights selected cell (24) is sent in this cover complex-valued weights output;
Described weights selected cell (24) is used for determining the size of two weights, selects to change less weights variable quantity and exports to digital beam forming unit (20).
6, fully adaptive one weigh module intelligent antenna receiving system as claimed in claim 5, it is characterized in that, described weight calculation unit (23) can adopt following structure with described weights selected cell (24): the multiple signals selector (50) that is connected successively, and it is output as the signal of corresponding weights array element to be updated; One dimension right value update computing unit (51), it is output as the variable quantity of right value update: right value update unit (52), it is output as the weights after the renewal; And right value update/selected cell (53), described right value update/selected cell (53) one side is selected control by the weights of the bay of corresponding current selection to right value update unit (52), the system's weights after output is upgraded on the one hand.
7, fully adaptive one weigh module intelligent antenna receiving system as claimed in claim 5 is characterized in that, the one dimension right value update criterion of described one dimension right value update computing unit (51) is:
ω(k+1)＝ω(k)+△ω(k)
△ ω (k)=-μ grad (J (k)) and
Wherein, subscript R represents corresponding real, and subscript I represents the imaginary part of corresponding plural number, replaces the purpose that ω (k) reaches system's weights coefficient update by continuous with ω (k+1).
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| WO2006119686A1 (en) * | 2005-05-09 | 2006-11-16 | Shanghai Ultimate Power Communications Technology Co., Ltd. | Method for dynamic selecting array antenna structure |
| CN101257335B (en) * | 2007-03-02 | 2012-07-04 | 中兴通讯股份有限公司 | Method and apparatus for form-giving array antennas beams |
| CN102664649A (en) * | 2012-04-13 | 2012-09-12 | 华为技术有限公司 | Radiofrequency front-end module, wireless access network equipment and method for controlling same |
| CN103441788A (en) * | 2013-07-04 | 2013-12-11 | 中国电子科技集团公司第十研究所 | Feedback decision type large-dynamic self-adaption array antenna beam forming method |
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- 2001-12-19 CN CN 01139171 patent/CN1264294C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006119686A1 (en) * | 2005-05-09 | 2006-11-16 | Shanghai Ultimate Power Communications Technology Co., Ltd. | Method for dynamic selecting array antenna structure |
| CN101257335B (en) * | 2007-03-02 | 2012-07-04 | 中兴通讯股份有限公司 | Method and apparatus for form-giving array antennas beams |
| CN102664649A (en) * | 2012-04-13 | 2012-09-12 | 华为技术有限公司 | Radiofrequency front-end module, wireless access network equipment and method for controlling same |
| CN102664649B (en) * | 2012-04-13 | 2014-09-03 | 华为技术有限公司 | Radiofrequency front-end module, wireless access network equipment and method for controlling same |
| CN103441788A (en) * | 2013-07-04 | 2013-12-11 | 中国电子科技集团公司第十研究所 | Feedback decision type large-dynamic self-adaption array antenna beam forming method |
| CN103441788B (en) * | 2013-07-04 | 2016-02-24 | 中国电子科技集团公司第十研究所 | A kind of feedback deterministic Larger Dynamic adaptive array antenna beam synthesizing method |
| CN109727053A (en) * | 2017-10-31 | 2019-05-07 | 北京京东尚科信息技术有限公司 | The determination method, apparatus and computer readable storage medium that object is launched |
| CN110555965A (en) * | 2018-05-30 | 2019-12-10 | 立积电子股份有限公司 | Method, apparatus and processor readable medium for detecting the presence of an object in an environment |
| CN110555965B (en) * | 2018-05-30 | 2022-01-11 | 立积电子股份有限公司 | Method, apparatus and processor readable medium for detecting the presence of an object in an environment |
| CN111082843A (en) * | 2019-09-18 | 2020-04-28 | 熊军 | Method for realizing single carrier equalization aiming at intelligent multi-antenna beam forming |
| CN111082843B (en) * | 2019-09-18 | 2023-11-03 | 西安宇飞电子技术有限公司 | Method for realizing single carrier equalization aiming at intelligent multi-antenna beam forming |
| CN113567936A (en) * | 2021-07-29 | 2021-10-29 | 哈尔滨工业大学 | Single-channel multilink beam forming echo detection method based on m sequence |
| CN113567936B (en) * | 2021-07-29 | 2023-11-17 | 哈尔滨工业大学 | Single-channel multilink beam forming echo detection method based on m sequence |
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