TWI281795B - Blind signal separation using signal path selection - Google Patents

Abstract

A communications device for separating source signals provided by M signal sources includes an antenna array comprising N elements for forming at least N antenna beams for receiving at least N different summations of the M source signals, with N and M being greater than 2. A controller is connected to the antenna array for selectively forming the at least N antenna beams. A blind signal separation processor forms a mixing matrix comprising up to the at least N different summations of the M source signals. The blind signal separation processor also determines if the different summations of the M source signals are correlated or statistically independent, and if not, then cooperates with the controller for forming different beams for receiving new different summations of the M source signals to replace the different summations of the M source signals that are not correlated or statistically independent in the mixing matrix. The desired source signals are separated from the mixing matrix by the blind signal separation processor.

Description

1281795 IX. INSTRUCTIONS: The present invention relates to the signal processing separation (B S S ) technique, which divides the _ source ^ inch (four) (four) blind signal, and mixes and separates your straw. The prior art is related to the separation - the signal system contains a mixture of source signals: two::: apostrophe' where the rainbow information is executed. ,. A limited number of cases related to politics should be familiar with the individual at the banquet, cocktails with syncope and personal benefits. The frequency book grandchildren, who are coexisting in the same spectrum by the four eves, are plagued by RF transmitters. Common channel is expected to only worsen with low power year after year, such as blue = network unlicensed wireless technology. - His personal domain 3. The commonly used blind signal separation techniques are principal component analysis (PCA), independent component analysis (ICA) and single value decomposition (SVD). Principal component analysis involves the source signal first- and second moment statistics' and the signal-to-noise ratio used for the source signal is very good. In addition, the independent component analysis is performed using the third and fourth moment statistics of the source signal after the principal component analysis process. Alternatively, the single value decomposition can be used to separate the source signal from the source signal mixture based on its eigenvalues. Regardless of the blind signal separation technique applied, complex sensors are used to receive signals from each source. Different source signal mixtures. Each sensor is fed with a source signal mixture of 7 1281795. Usually, the receiver does not know the channel coefficients and the original source signal. The unique summation of the signals is used to assemble the mixing matrix. A suitable blind signal separation technique is then applied to the mixing matrix to separate the expected source 彳a number from the source signal mixture. As an example, U.S. Patent No. 6,799,170 discloses the use of independent component analysis to separate an independent source signal from a source signal mixture. The complex sensor receives the source signal mixture, and the processor takes a sample of the source signal mixture at any time and stores each sample as a data vector to create a data set. Each sensor is a source signal mixture whose output source signal is uniquely summed. The independent component analysis module performs an independent component analysis of the poor vector to separate the independent source signals in the source signal mixture from the other signals. The sensors are spatially separated from one another, and the processor creates a data set for each sensor to create a data set. The \^17 patent also discloses that the sensor number N is equal to or greater than the source number M, that is, the N>M can aggregate the data set. One problem with this is that as the number of sources M increases, the number of sensors N also increases. The small ^ portable communication device has a small available volume for a large number of sensors N. It is also a problem for the user to measure the outside of the communication device. η Wu Guo Patent No. 6,931,362 discloses another method of separating and separating signals using a blind signal. The disclosed blind signal separation technique forms a mixing matrix with a matrix of weights that can minimize the mean square error caused by interfering emission chirp and Gaussian noise. This blending weight maximizes the signal interference noise ratio. As with the '17G Patent' sensors, they are also spatially separated from each other, and the sensor number N is equal to or greater than the source number M to assemble the mixing matrix. Furthermore, each sensing system provides a mixing matrix that is single to produce an A-area area to the portable communication device 8 1281795. SUMMARY OF THE INVENTION The present invention is directed to providing a communication stimuli comprising a small antenna array that can receive a mixture of source signals by a blind nick separation technique to isolate a desired source signal. According to this and other objects, features and advantages of the present invention, a source signal provided by a separate source of signal is provided by a communication device that can receive an antenna array of different sums of the source signals. - A receiver or receiver component is coupled to the antenna array and a blind signal separation processor is coupled to the receiver to form a mixing matrix. The hybrid matrix includes different summations of the source signals received by the = line array. The blind signal separation process then separates the expected source signal from the mixing matrix. In addition to the use of spatial separation sensors to provide different summation of the source signals for the hybrid matrix, small antenna arrays can be used instead. For portable communication devices, blind signal separation techniques can be used because the antenna array provides more than one input to the mixing matrix - still maintaining tightness. In particular, path selection can be used to provide different signal summations for blind signal separation processing. The path selection is performed such that all source numbers used to assemble the mixing matrix are summed (first and second moments) and/or statistics (second and fourth moments) independently. That is, the antenna beam is selectively formed - the incident signal is selectively selected to provide a mixed matrix source signal to add up to replace the sum that is not associated and/or statistically independent. The antenna array may comprise an N antenna element to receive]V [source signal at least N not 9 1281795

In addition, N and Μ are greater than 2 〇—Batch 丨 叮 叮 叮, 士 A 里 从 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 4 wood-receiver component, is connected to the current green Gui Shao N笊 her death to ° Hai antenna array to receive the source signal to the "mesh separation processor, is connected to the receiving cry, and? The source signal is at least 2 N differently mixed matrix: The target signal separation processing H can also be different depending on the source money: association or statistical independence, if not, then operate with the controller to form = receive m5#b new different sum Different beams are used to replace the non-f-related listener unique sources in the mixing matrix. The expected source signals are separated from the mixing matrix by the blind signal separation processor. In another embodiment, the receiver component may comprise N耙The receivers, each of the sinister receivers #include a different total of the multiplexed signals that can be received for the respective antenna elements connected thereto, and the different signal components can be selected. The blind signal separation processor can be connected to The N-type receiver is used to form a mixing matrix, and the U may include at least N different sums of at least N different demultiplexed signals. The combined matrix has an order equal to kN. 70 pieces of N antennas can be correlated Union. The N The associated antenna element can include an N active antenna element such that the antenna array can form a phase array. Alternatively, the N associated antenna element can include at least one active antenna element, and at most N-1 passive antenna elements enable the antenna array to form a switch The beam antenna is linear. The blind signal separation processor can separate the expected source signal from the mixing matrix based on at least one of principal component analysis, independent component analysis and single value decomposition. One enhancement relates to the ability to receive additional signals

Claims (1)

1281795 X. Application phase, -", the communication 裒] [: The communication of the source signal provided by the MI Tiger source is connected to the column, and includes the N component that can form at least the N antenna beam; N is different, N and Μ are greater than 2, and the antenna is connected to the antenna array to selectively form the at least Ν at least 组件 ^ component 'connected to the antenna array' to receive the summation of the source signal V iN; Package: off: Reason: Connect to the receiver component to form a mixing matrix that is also added by the separation processor. If the blind signal is vetoed, the summation of the signal is independent or statistically independent, and the same operation To form a new independent node ' bundle that can receive the source signal to replace the uncorrelated or statistically independent 5 Μ source signals in the mixing matrix, and to separate the expected source signal and the mixing matrix. The package 2 includes a communication device such as the scope of the //If range, wherein the receiver group has a long-term "" reception ☆, each type of receiver includes an antenna device that can be connected to a σ σ The received source signal is differently summed, and the k-way finger of the 2-way component is generated; and the blind signal separation processor is connected: the N-type receiver forms the hybrid matrix, and the hybrid matrix may include the μ source The signal is at least N differently plus at least kN different multipath components, 57 1281795 The hybrid matrix has a ranking equal to kN. :. Please request the communication device of item 1 of the patent scope, .... The communication device of the first item of the Kifi range, wherein the mixed matrix section κ ώ兮, the blind signal separation processor can separate the Μ source 唬 from the hybrid matrix. A communication device that declares the work of the patent scope, where Ν>Μ. Feng: The person assuming the patent communication device of the first paragraph, wherein the antenna element comprises an associated antenna element. ^ A communication device of claim 6 of the patent gas cell, wherein the Ν-related element comprises a Ν active antenna element such that the phase array. The communication device of claim 6, wherein the ν correlation: "4" component comprises at least - an active antenna element, and at most a plurality of 被动-1 passive antennas, such that the antenna array forms a switching beam antenna. The communication device of claim 2, wherein at least two of the ν antenna members are associated with different polarities. The communication device of claim 9 wherein the different polarities are orthogonal to each other. The communication device of claim 1 further includes an elevation controller that selectively changes an elevation angle of at least one of the Ν antenna beams to generate at least one additional antenna to add at least one additional sum of the Μ source signals Receiving; wherein the receiver component also receives the at least one additional different sum of the source signal using the at least one additional antenna beam; and/or the middle of the image forming the hybrid matrix Included in the source letter 58 1281795 9 0.. L 7 The at least one additional sum of the tigers. ^ 12 · The communication device of claim 11 wherein the elevation control The apparatus can selectively change the elevation angle of the N antenna field type such that an N-attachment: line field type is received to receive the M-source signal U with different summations, and the ordering of the mixing matrix is now equal to 2N. The communication device of item 11, wherein the elevation angle _ is cut relative to the N antenna... independently controlling to change the elevation angle of the N antenna field type, so that == receiving the N of the _ signal is additionally different, the order of the mixing matrix Now equal to 2kN. The communication device of claim 11 wherein the antenna array J b 3 - the ground plane; and wherein the antenna element comprises: an active antenna element adjacent to the ground plane; = a plurality of passive antenna elements near the ground plane, an upper half of each passive antenna element and a corresponding lower half, an upper variable reactance load connecting the upper half to the ground plane to change an antenna pattern Azimuth; Thousand planes, the elevation controller includes a variable reactance load for each of the lower parts to connect, and the spring element is adjusted to reduce the lower variable reactance to ^ ° to § hai Ground plane, The field type is moved in the direction of the elevation angle. ^ Among them, the line of the item i of the patent term of the claim is included in the ―, /, adjacent to the N antenna element, and the antenna array is also Wherein the elevation control 59 1281795 !=: _ the controllable RF suppression coil of the ground plane, and the RF suppression coil is used to move the antenna beam in the elevation direction. 'Separate the communication device of the first item, wherein the Blind signal port component analysis (PCA), independent component analysis (ICA), and single matrix separation, based on one of the methods, the expected source signal and the hybrid species: the Sangzhi-communication device to separate (4) the signal source, The communication device includes a day-to-day array of dry N connections to the antenna - a blind signal separation processor coupled to the receiver component and the receiver component of the antenna array, the method comprising: 'receiving at the train The at least two different signals of the source signal are added to her, _ to 2; ^ to ^ Ν the antenna element of the antenna beam, Ν & Μ:: 7 into the at least Ν antenna beam to respond to the controller; and ... source signal At least Ν different sum Provided to the receiver component; processed by the 5th-camera signal separation processor by the at least one of the source signals, the processing packet:: read if the source signal is different, whether the summation is different or not Statistically independent, operating in conjunction with the controller to form different beams for different summation of the source signals, and no correlation or statistics. 60 1281795 separates the expected source signal from the mixing matrix. 1 8 · If the patented rib cage contains N-type receivers, each of which is connected to the method, wherein the receiver component is connected to the 接收-type receiving thief containing k 耙 finger to be different for the selected k; The measuring unit is connected to the receiver by two;, !, " the tiger separating processor is connected to the source signal, at least ==== matrix, the mixing, the matrix contains at least kN of the 々 々 々 加 加 加For different multipath components, this combination matrix has a rank equal to kN. For example, the method of claim 17 of the patent scope, wherein N,. * t ^^^ The signal K is separated from the mixed matrix by the binocular L#b separation process. ☆ The M source can be used as the method of claim 17 of the patent scope, wherein N>M. The method of claim 17, wherein the tlN antenna element 丨卞匕3 N is associated with the antenna element. The antenna I3 is as in the method of claim 22, wherein the U-related joint array package ... the moving antenna element 'such that the antenna array forms a phase ^ ^ ^ 22 ^ ^ ^ t Μ N ^ „ 亓 , , 3 y The active antenna element and the N-1 passive antenna are configured such that the antenna array forms a switched beam antenna. The method of claim 17, wherein the at least two of the N pieces are associated with different polarities 26' The method of claim 17, wherein the communication device enters 61 1281795 f'V::package:-elevation controller' selectively selects at least one of the N antenna beams, In order to generate at least one additional antenna beam, the M source signal J is added to receive a different sum; the receiver component also causes the receiver component to receive the "source signal at least - additional includes two -4 signal separation processing The device forms the hybrid matrix to at least 3 different counts. 27. As reported in the Scope of the Patent Application, the elevation angle of the Ν antenna pattern can be selectively changed such that: ; hai = ^ : the line field type to receive the source signal is now equal to 2N. J force, , and heart 忒 this combination moment 28. If the first item of the patent application scope is divided into the relative line element < the elevation controller is used to change the two or '1 area of the Ν antenna field type The independent control field type to receive the signal of the source signal can be generated (4) plus the antenna. The ordering is now equal to 2kN. 5 plus total, the matrix of the hybrid. 29. If the scope of the patent application is 17th, the treatment is based on principal component analysis (PCA), independence, ..., and the blind value separation (SVD) is at least one of them. - Vertical component analysis (ICA) and single mixed matrix separation. :,,,,,,,,,,,,,