CN102724148B - Method, device and system for information channel estimating - Google Patents

Method, device and system for information channel estimating Download PDF

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CN102724148B
CN102724148B CN 201210228973 CN201210228973A CN102724148B CN 102724148 B CN102724148 B CN 102724148B CN 201210228973 CN201210228973 CN 201210228973 CN 201210228973 A CN201210228973 A CN 201210228973A CN 102724148 B CN102724148 B CN 102724148B
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signal
combined
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transmission
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CN102724148A (en
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方李明
拉斐尔·辛德瑞那
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华为技术有限公司
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Abstract

本发明公开了一种信道估计的方法,包括:当第K条线路新加入到已有的K-1条线路的组合中时,在第K条线路上加载所述已有的K-1条线路的发送信号的组合;测量所述被加载所述信号的组合后的第K条线路的信噪比;根据所述已有的K-1条线路的发送信号的组合的系数和所述测量的信噪比,计算所述被加载所述信号的组合后的第K条线路的串扰信道。 The present invention discloses a method of channel estimation, comprising: when a new article K line added to the existing composition of the K-1 lines, the load on the existing K-th strip line K-1 a combination of transmission line signal; loaded by measuring the signal to noise ratio of the K-th line of the combined signal; combination coefficient according to the existing K-1 pieces of transmission signal lines and the measurement SNR calculating crosstalk channels of line K article after said combining said signal being loaded. 还公开一种信道估计的装置和系统,本发明不需要重新设计设备,而且测量时间短,精度高且有很好的鲁棒性。 Also disclosed apparatus and system for channel estimation, the present invention does not require re-design of the apparatus, and the measuring time is short, high accuracy and good robustness.

Description

-种信道估计的方法、设备和系统 - the type of channel estimation methods, devices and systems

技术领域 FIELD

[0001] 本发明涉及网络通信领域,具体地说,涉及一种信道估计的方法、设备和系统。 [0001] The present invention relates to network communication field, and more particularly, to a method of channel estimation, devices and systems.

背景技术 Background technique

[0002] 数字用户线值SL)是一种W电话双绞线为传输介质的数据传输技术。 [0002] Digital Subscriber Line value SL) W is a telephone twisted pair data transmission technology transmission medium. X数字用户线(xDSL)作为该传输技术的组合,包括高速数字用户线(皿SL)、单线对高速数字用户线(S皿化)、非对称数字用户线(ADSL)等等。 X Digital Subscriber Line (xDSL) technology as a combination of the transmission, including high-speed digital subscriber line (SL dish), Single-pair High-speed Digital Subscriber Line (S of dish), Asymmetric Digital Subscriber Line (ADSL) and the like. 其中,除利用基带传输的甜D化等之外,采用通带传输的其它xD化利用频分复用技术,与传统电话业务(POT巧可共存于同一对双绞线上。 Wherein, in addition to D and so the use of sweet baseband transmission, the use of other xD passband transmission using frequency division multiplexing, and traditional telephone service (POT clever can coexist on the same twisted pair.

[0003] 随着通带传输的xD化使用的频带越来越高,高频段的串扰(化ossta化)问题也表现得尤为突出。 [0003] As the pass band of the transmission band used xD increasingly high, high frequency crosstalk (of ossta of) problem was particularly prominent. 现有技术提供一种向量数字用户线(vectored-DSL)技术解决xD化串扰问题,如图1所示。 Vector prior art to provide a digital subscriber line (vectored-DSL) technology to solve the problem of crosstalk xD, as shown in FIG. 在下行方向上,X是NX 1的联合收发设备(可W为数字用户线接入复用器DSLAM)发送的信号向量,y是NX 1的对端设备(可W为用户侧设备)接收的信号向量, n是NX 1的噪声向量。 In the downstream direction, X is NX 1 combined transceiver (W may be a digital subscriber line access multiplexer DSLAM) transmitted signal vector, y is the peer NX devices (W is a user side device) receives the signal 1 vector, n being NX 1 noise vector. 共享信道用信道传输矩阵表示为 Shared channel represented by a channel transfer matrix

[0004] [0004]

Figure CN102724148BD00051

[0005] hy (1《i《N,1《j《脚表示线对j对线对i的串扰传递函数,h。(1《i《脚表示线对i的信道传递函数,N为线对数,即用户数。通过在联合收发设备侧引入一个用W 表示的向量预编码器,则对端设备接收的信号向量为 [0005] hy (1 "i" N, 1 "j" foot represents pair j transmitted crosstalk pair i is a function, h. (1 "i" foot line representing the transfer function of the channel i, N is the wire pair signal vector number, i.e. the number of users by introducing the transceiver side a joint with a vector W represents the precoder, the receiving device is a peer

[0006] 歹二HWx + 打 [0006] bad play two HWx +

[0007] 若向量预编码器能使HW为一对角矩阵,如diag化),则可消除串扰。 [0007] If the vector pre-encoder can make HW is a diagonal matrix of such diag), the crosstalk can be eliminated. 为了消除串扰,必须先对信道进行估计,获得信道传输矩阵。 To cancel the crosstalk, channel must first estimate to obtain a channel transmission matrix.

[0008] 现有技术中,是利用信号误差来对信道进行估计,要求设备必须能够提供信号误差。 [0008] In the prior art, is to estimate the channel, the device must be able to provide the required signal using the error signal error. 然而,许多网上运行的设备不支持该个功能,无法利用信号误差来估计信道,从而不能进行串扰抵消。 However, many of the online operation of the device does not support this function, it can not take advantage of the error signal to estimate the channel, and thus can not be crosstalk cancellation.

发明内容 SUMMARY

[0009] 本发明实施例要解决的技术问题是:提供一种信道估计的方法、设备和系统,克服现有的信道估计技术要求设备必须能够提供信号误差的缺点。 Example Problem to be Solved [0009] The present invention is: to provide a channel estimation method, apparatus and system to overcome existing technical requirements for channel estimation apparatus must be able to signal errors disadvantages.

[0010] 为解决上述技术问题,本发明实施例提供一种信道估计的方法,包括:当第K条线路新加入已有的K-1条线路的向量组中时,在所述第K条线路上加载所述所述已有的K-1 条线路的发送信号的组合;测量加载了所述发送信号的组合的第K条线路的信噪比;根据所述已有的K-1条线路的发送信号的组合的系数和所述测量的信噪比,计算所述第K条线路的串扰信道。 [0010] To solve the above problems, embodiments provide a method of channel estimation according to the present invention, comprising: when the K-th vector set of new lines added to the existing K-1 lines, the article in the K composition K-1 line signal transmitting section of the line existing on the loading; measured SNR loaded article K line of the combined transmission signal; according to the existing K-1 section the combination coefficient of transmission signal lines and the measured SNR calculating the K-th line of the crosstalk channel.

Figure CN102724148BD00052

[0011] 本发明实施例还提供一种联合收发设备,包括: Example [0011] The present invention further provides a combined transceiver, comprising:

[0012] 加载单元,用于在第K条线路上加载已有的K-1条线路的发送信号的组合;所述第K条线路为新加入的线路; [0012] The loading unit for combining the K-1 transmission signal line of the article has been loaded on the K-th line; the line K-th line is newly added;

[0013] 接收单元,用于接收对端设备测量的所述加载了所述发送信号的组合的第K条线路的信噪比; [0013] a receiving unit, for receiving the end of the loading device measured signal to noise ratio of the K-th transmission lines of the combined signal;

[0014] 计算单元,用于根据所述已有的K-1条线路的发送信号的组合的系数和所述接收的信噪比,计算所述第K条线路的串扰信道。 [0014] calculation unit according to a combination coefficient of the existing K-1 pieces of transmission signal lines and the received SNR calculating the K-th line of the crosstalk channel.

[0015] 本发明实施例还提供一种信道估计的系统,,包括;联合收发设备和对端设备; Example [0015] The present invention also provides a channel estimation system ,, comprising; combined transceiver and the peer device;

[0016] 所述联合收发设备包括: The [0016] combined transmitting and receiving apparatus comprising:

[0017] 加载单元,用于在第K条线路上加载已有的K-1条线路的发送信号的组合;所述第K条线路为新加入的线路; [0017] The loading unit for combining the K-1 transmission signal line of the article has been loaded on the K-th line; the line K-th line is newly added;

[0018] 接收单元,用于接收对端设备测量的所述加载了所述信号的组合的第K条线路的信噪比; [0018] The receiving means for receiving the terminal apparatus measures the SNR of the loaded article K line of said combined signal;

[0019] 计算单元,用于根据所述已有的K-1条线路的发送信号的组合的系数和所述接收的信噪比,计算所述第K条线路的串扰信道; [0019] calculation unit according to a combination coefficient of the existing K-1 pieces of transmission signal lines and the received SNR calculating the crosstalk channels K-th line;

[0020] 所述对端设备,包括: [0020] the peer apparatus, comprising:

[0021] 测量单元,用于测量所述加载了所述信号的组合的第K条线路的信噪比; Section K SNR [0021] measurement means for measuring the loading of the combined signal line;

[0022] 发送单元,用于发送所述测量的信噪比至所述联合收发设备。 [0022] The transmitting unit to noise ratio for the transceiver device transmits the combined measurement.

[0023] 本发明实施例还提供一种联合收发设备,包括: Example [0023] The present invention further provides a combined transceiver, comprising:

[0024] 加载单元,用于在第K条线路上加载已有的K-1条线路的发送信号的组合;所述第K条线路为新加入的线路; [0024] The loading unit for combining the K-1 transmission signal line of the article has been loaded on the K-th line; the line K-th line is newly added;

[00巧]发送单元,用于发送所述已有的K-1条线路的发送信号的组合的系数至对端设备; [Qiao 00] transmitting means transmits the combined coefficient existing K-1 to the sending signal to the line for the peer device;

[0026] 接收单元,用于接收所述对端设备计算的所述加载了所述信号的组合的第K条线路的串扰信道。 [0026] a receiving unit, for receiving the end of the computing device loaded crosstalk channels article K line of said combined signal.

[0027] 本发明实施例还提供一种信道估计的系统,包括;联合收发设备和对端设备; Embodiment [0027] The present invention further provides a system for channel estimation, comprising; combined transceiver and the peer device;

[0028] 所述联合收发设备包括: [0028] The combined transceiver apparatus comprising:

[0029] 加载单元,用于在第K条线路上加载已有的K-1条线路的发送信号的组合;所述第K条线路为新加入的线路; [0029] The loading unit for combining the K-1 transmission signal line of the article has been loaded on the K-th line; the line K-th line is newly added;

[0030] 发送单元,用于发送所述已有的K-1条线路的发送信号的组合的系数至对端设备; [0030] The transmitting means transmits the combined coefficient for the existing K-1 to the sending signal line to the peer device;

[0031] 接收单元,用于接收所述对端设备计算的所述加载了所述信号的组合的第K条线路的串扰信道; [0031] a receiving unit, for receiving the end of the loading device calculates the crosstalk channels of the K-th line of the combined signal;

[0032] 所述对端设备,包括: [0032] the peer apparatus, comprising:

[0033] 测量单元,用于测量所述第K条线路的信噪比; [0033] The measuring unit for measuring a signal to noise ratio of the K-th line;

[0034] 接收单元,用于接收所述联合收发设备发送的所述已有的K-1条线路的发送信号的组合的系数; [0034] a receiving unit, the combined coefficients for the combined transmission of the transceiver device K-1 prior to the sending of a signal line of said receiving;

[00巧]计算单元,用于根据所述已有的K-1条线路的发送信号的组合的系数和所述测量的信噪比,计算所述第K条线路的串扰信道; [00 clever] calculation unit according to a combination coefficient of the existing K-1 pieces of transmission signal lines and the measured SNR calculating the crosstalk channels K-th line;

[0036] 发送单元,用于发送所述计算的串扰信道至所述联合收发设备。 [0036] The sending unit, configured to send the calculated crosstalk channels to said combined transmitter and receiver.

[0037] 由上述本发明实施例提供的技术方案可W看出,本发明提供一种信道估计的方法、设备和系统,利用现网的设备能提供信噪比(SNR)参数的特点,通过测量的SNR参数和加载的其他线路的发送信号的组合计算出线路的串扰特性。 [0037] The technical solution provided by the embodiment of the present invention W may be seen, the present invention provides a method, apparatus and system for channel estimation, using the existing network device can provide the characteristics of SNR (SNR) parameters, by combined SNR measurements and other parameters of the transmission signal calculated line load characteristic line crosstalk. 本发明实施例提供的技术方案,不需要重新设计设备,而且测量时间短,精度高且有很好的鲁棒性。 Technical solutions provided by the embodiments of the present invention, without redesigning equipment, but the measuring time is short, high accuracy and good robustness.

附图说明 BRIEF DESCRIPTION

[0038] 图1为现有技术中vectored-D化技术解决xD化串扰的示意图; [0038] FIG. 1 is a schematic diagram of the prior art technology to solve the vectored-D xD of crosstalk;

[0039] 图2为本发明实施例一信道估计的方法示意图; [0039] FIG. 2 is a schematic diagram of a channel estimation method of the embodiment of the present invention;

[0040] 图3为本发明实施例二信道估计的系统示意图; [0040] Fig 3 a schematic view of the system according to the second embodiment of the channel estimation of the present invention;

[0041] 图4为本发明实施例二联合收发设备的加载单元的结构示意图; [0041] FIG. 4 is a schematic configuration of the two combined transmitting and receiving apparatus according loading unit embodiment of the present invention;

[0042] 图5为本发明实施例H信道估计的系统示意图; [0042] FIG. 5 H channel estimation system embodiment of the present invention, a schematic diagram;

[0043] 图6为本发明实施例H的联合收发设备的加载单元的结构示意图。 [0043] FIG. 6 is a schematic view of the loading unit of embodiment H combined transceiver embodiment of the invention.

具体实施方式 Detailed ways

[0044] 本发明实施例,既可W适用于新用户上线时估计串扰信道,也可W适用于对串扰信道进行跟踪等场景。 [0044] Example embodiments of the present invention, when the estimated crosstalk channel W applied to both new users on line, can also be applied to W channel crosstalk scene tracking. W下均W新用户加入向量组(vector group)为例进行说明。 W W are the new user joins the group of vectors (vector group) as an example. 假设在一个向量组中已有K-1条线路,当第K条新线路要求加入该个向量组时,可W通过第K条线路上测量的信噪比(SNR)来估计出其他K-1条线路分别对第K条线路的串扰。 Assuming a vector group already lines K-1, K article when added to the new line in claim vectors group, W may be by ratio (SNR) measured at the K-th line to the estimated other K- a line crosstalk respectively to the article K line.

[0045] 如图2所示为本发明实施例一信道估计的方法示意图。 [0045] FIG. 2 shows a schematic view of the present invention a method of channel estimation embodiment. 本实施例进行信道估计的步骤如下: Step of the present embodiment, channel estimation is as follows:

[0046] 步骤101 ;在信道的一条线路上加载其它线路的发送信号的组合; [0046] Step 101; loading in combination with other signals transmitted on a line in the line channel;

[0047] 该步骤具体为联合收发设备在线路K的下行方向的某个子频带上,同时注入线路1至线路K-1的发送信号的全部或部分信号的组合。 [0047] This step is a particular transceiver in a combined sub-band in the downlink direction of line K, while injecting a combination of all or part of the signal K-1 to a line transmission signal line. 加载了哪些线路的信号,哪些线路对第K条线路的串扰就能被本发明实施例计算出来。 Which loading of signal lines, which lines crosstalk article K line can be calculated according to the present embodiment of the invention. 各个子频带上是并列进行上述处理的。 The above-described processing is performed in parallel on each subband.

[0048] 该里W加载线路1至线路K-1的发送信号的全部信号的组合为例。 [0048] W is loaded in the composition to a line K-1 all signal lines of the transmission signal as an example. 假设在线路K 上所需要的SNR测量次数为N,每个SNR测量需要持续L符号(symbol)的时间,其他的K-1 条线路已经进入showtime状态。 Suppose the number of measurements SNR required on line K is N, L each SNR measurement last symbol (symbol) of the time, the other K-1 lines already enter the state showtime. 假定在第n个SNR测量期间第i条线路上的第1个符号所需发送的信号为s,<">(/),那么在该线路上实际发送的信号为yW(/)。当第K条线路加入到向量组时,其他的线路继续发送原来的信号,则有: Signal is assumed that the n-th period of the i-th line of the first SNR measurement required symbol is transmitted s, < "> (/), then the signal on the line is actually transmitted yW (/). When the first when added to the K lines vector group, other lines continue to send original signals, there are:

[0049] 林'、(/)二矿、(/),Vi<K. [0049] Lin ', (/) two ore, (/), Vi <K.

[0050] 通过在第K条线路的发送信号上添加所有其他1到K-1条线路的发送信号的组合,则第K条线路被加载后的发送信号为: [0050] By adding a combination of all of the other transmission signals 1 to K-1 lines in the K-th transmission signal line, the line K-th transmission signal is loaded as:

[0051] x^(l) = sf(l) + ^zrsf(l). 1=\ [0051] x ^ (l) = sf (l) + ^ zrsf (l). 1 = \

[005引其中,zW为在第n个SNR测量期间第i条线路的组合系数,且满足: [Wherein lead 005, zW combination coefficient as the n-th period of the i-th line of the SNR measurement, and satisfies:

[0053] 却巧2=1. i=l [0053] Qiao but 2 = 1. I = l

[0054] 组合系数的绝对值的平方和为1,是本发明的一个优选实施例,还可为其它系数。 And the square of the absolute value of [0054] combining coefficients 1, it is a preferred embodiment of the present invention, but also for the other coefficients.

[00巧]e为步长,是为了使加载的信号对第K条线路的影响不至于产生额外的误码,该里要求加上加载的信号后在第K条线路的接收端的SNR容限不小于零。 [00 Qiao] E is the step size of the signal to effect loading of article K line without incurring additional errors, where required after adding the signal at the receiving end of the loaded article K line SNR margin not less than zero. 一般情况下,线路的信噪比容限设为6地,为了保险起见,应保证加载后第K条线路的接收端SNR降低不大于3. 5地。 In general, the SNR margin is defined as the line 6, in order to be safe, we should ensure that the receiving end after loading SNR article K line is reduced to not more than 3.5. 本实施例通过下面的公式来设置e,W满足上述要求: The present embodiment is provided by the following formula e, W meet the above requirements:

[0056] [0056]

Figure CN102724148BD00081

[0057] 其中,表示在第i条线路上的发送功率(联合收发设备已知各条线路的发送功率);没Wf表示第K条线路在未被加载信号时接收端的信噪比。 [0057] where it represents the i-th line of the transmission power (power transmission joint is known transceiver device of each line); Wf represents no article K line when not receiving end load signal to noise ratio.

[005引步骤102 ;巧帽被加载线路的信噪比; [Step 005 Primer 102; Qiao SNR cap is loaded line;

[0059] 该步骤具体为对端设备测量线路K的下行方向的上述相同子频带上的信噪比,信噪比是直接测量得到的。 [0059] The particular step is the same signal to noise ratio on the downlink subband-direction end of the apparatus for measuring the line K, the signal to noise ratio is measured directly.

[0060] 步骤103 ;根据其它线路的发送信号的组合的系数和测量的信噪比,计算被加载线路的串扰信道。 [0060] Step 103; The combination coefficient and the measured transmission signal to noise ratio of the other line, the line is loaded calculate crosstalk channels.

[0061] 该步骤具体为联合收发设备根据对端设备反馈的线路K被加载后的信噪比和其它线路的发送信号的组合的系数计算线路K的串扰信道;或者为联合收发设备将其它线路的发送信号的组合的系数发送至对端设备,对端设备根据测量的线路K被加载后的信噪比和接收的其它线路的发送信号的组合的系数计算线路K的串扰信道。 [0061] This step specifically for the joint line transceiver device calculates the combined coefficient K based on the SNR of the remote device feedback line K is loaded and the other transmission signal line crosstalk channels; or a combined transceiver to the other lines coefficients combined transmission signal is transmitted to the peer device calculates the crosstalk channels of line K coefficient combinations of other transmission signals and the received SNR line after the end of the device is loaded in accordance with the line K measured.

[0062] 计算被加载线路的串扰信道的推导过程如下: [0062] calculating the crosstalk channels of the loaded line is derived as follows:

[0063] 根据步骤101中第K条线路被加载后的发送信号的公式,则第K条线路的对端设备所接收的信号为: [0063] According to the formula of the transmission signal in step 101 the K-line is loaded, the terminal device of the K-th received signal line is:

Figure CN102724148BD00082

[0066] 其中,接收的信号功率为: [0066] where the received signal power as:

Figure CN102724148BD00083

[0069] 接收的噪声功率为: [0069] The received noise power is as follows:

Figure CN102724148BD00084

[0072] 其中,為表示背景噪声的功率。 [0072] where, is a background noise power.

[0073] 根据上述两个公式,当各条线路的发送功率相等时,即巧2 =式,第K条线路的对端设备所测量的SNR可W通过下式表示: [0073] According to the above two formulas, when the transmit power of each line is equal, i.e., the formula = 2 Qiao, the peer article K line measured SNR may be represented by the following formula W:

[0074] [0074]

Figure CN102724148BD00085

Figure CN102724148BD00086

Figure CN102724148BD00087

Figure CN102724148BD00088

Figure CN102724148BD00089

Figure CN102724148BD000810

Figure CN102724148BD00091

[0080] 定义5 =向…而_if,护"> =時。跑f巧二^巧",=z严。 [0080] Definition 5 = ... and to _if, care "> = time. Coincidentally two running f ^ clever", = z strict. 根据勾股定理,有"KK According to the Pythagorean theorem, there is "KK

[0081] [0081]

Figure CN102724148BD00092

[00的]将否和护。 [00] and will no protection. )分别分解为实部和虚部,即=Re巧}=Im巧},媒> =Re巧(">}, 巧砖",},则有 ) Are divided into a real part and an imaginary part, i.e., Qiao = Re}} = Im clever, mordant> = Re Qiao ( ">}, Qiao brick",}, there

Figure CN102724148BD00093

[0085] 其中,a=[叱,..屯&_1 ai,,..a…]T,b(",=[牠…峨-,巧)…姆jr。为了方便, 定义ai=[a]i ,却"i=[bW],.。 [0085] where, a = [hoot, .. Tun & _1 ai ,, .. a ...] T, b ( ", = [... it Bauer -, Qiao) ... jr Farm For convenience, definitions ai = [a]. i, but "i = [bW], .. 根据上述两个公式,可得 According to the above two formulas, available

[0086] I 否+ 沛。 [0086] I NO + Pei. '|:=闷|2 +|£护。 '|: = Nausea | 2 + | £ protection. |: +2^ bW 甘a. |: + 2 ^ bW Gan a.

[0087] 根据上式和前面SNR的表达式,有 [0087] The preceding expressions and formulas of SNR with

Figure CN102724148BD00094

Figure CN102724148BD00095

Figure CN102724148BD00096

Figure CN102724148BD00097

Figure CN102724148BD00098

[009引定义一个大小为MXN的矩阵P,且其元素Pm,n=的m,n满足 [009 MXN primers define a matrix of size P, and its elements Pm, n = m, n, satisfies

[0096] [0096]

Figure CN102724148BD00101

[0097] 它作为SNR的组合矩阵,有打《 [0097] The matrix composition as SNR, some playing "

Figure CN102724148BD00102

[0101] 对每一个n,都有一个上述形式的公式。 [0101] Equation for each n, has a form of the above. 将所有该些公式合并为一个矩阵,有 All that these formulas into a single matrix, there

[0102] [0102]

Figure CN102724148BD00103

[010引定义C = [C(1)...C(N)]T和B =比(l)...b(N)]H.因此,有 [010 primers defined C = [C (1) ... C (N)] T and B = ratio of (l) ... b (N)] H. Accordingly, there is

[0104] e PBa = Pc. [0104] e PBa = Pc.

[0105] 则a的最小二乘解为 [0105] is a least squares solution is

[010引a = e-ipinv(PB)化, [010 Primer a = e-ipinv (PB) of,

[0107] 其中,pinv(.)表示伪逆操作。 [0107] where, pinv (.) Indicates a pseudo-inverse operation. _ 月K ; _ May K;

[010引求解出a后,再根据二^和a =[布1...而,&_讯,1. . . a…i]T,就可W得到经过直Kk 接信道归一化的串扰信道,如下式表示: After [010 solved primer a, and then according to a two ^ a = [1 ... cloth and, _ & hearing, 1... A ... i] T, W can be obtained through direct contact channel Kk normalized crosstalk channel, expressed as follows:

[010引二口,'+知hx,K [010 two primers, 'know + hx, K

[0110] 根据上述推导,计算串扰信道的具体步骤如下: [0110] According to the above derivation, the specific steps of calculating crosstalk channels are as follows:

[0111] 选择合适的组合矩阵,根据各条线路上的发送信号的组合的系数,计算G = pinv(PB)P;根据各条线路上的发送信号的组合的系数和测量的SNR,计算C树二臺奋去而-去€2钟,叫;;根据上述计算结果,计算a = e -iGc ;最后,得出经直接信道h..- 归一化的串扰信道^ = A +知KW,所-。 [0111] select the appropriate combination of the matrix, a coefficient combination of the transmission signals on the respective lines, calculates G = pinv (PB) P; The coefficients and the measured combination of transmission signals on the lines the SNR, calculated for C two sets to the tree Fen - € to 2 minutes, based on the calculation result is called ;; calculating a = e -iGc; Finally, derived by direct channel h ..- normalized crosstalk channels known KW ^ = a + , the -.

[0112] 而当各条线路的发送功率不相等时,第K条线路的对端设备所测量的SNR可W通过下式表示: [0112] When the transmission power of each line are not equal, the peer article K line W measured SNR may be represented by the following formula:

Figure CN102724148BD00104

Figure CN102724148BD00105

Figure CN102724148BD00106

Figure CN102724148BD00107

Figure CN102724148BD00108

[011 引 [011 Cited

Figure CN102724148BD00111

[0116] 定义5二巧...是_,广瓜")=反;",…跑f A二^巧巧")=z,…巧根据勾股定理,有 [0116] 5 define two coincidence ... _ is widely melon ") = trans; ', ... ^ Qiaoqiao two running f A') = Z, ... clever the Pythagorean theorem, there

[0117] [0117]

Figure CN102724148BD00112

[om] 将5和巧">分别分解为实部和虚部,即"A,.二民6巧}二陆巧},巧=民e巧W}, 巧,二:Im拓(")}侧有 [OM] to 5 and clever "> are decomposed into a real part and an imaginary part, i.e." A ,. 6 clever two people two land}} Qiao, Qiao Qiao W is e} = China, Qiao, di: Im extension ( ") } side

Figure CN102724148BD00113

[0121] 其中,a =[如…如片凤,1... ai,K_i]i,b("> =[嫂…嫂一峨…礙一f为了方便,定义3i= [a] 1,巧"=阳W],..根据上述两个公式,可得 [0121] where, a = [... such as chicken pieces, 1 ... ai, K_i] i, b ( "> = [a-e Sao Sao ... ... f a obstacle for convenience, defined 3i = [a] 1, clever "Yang W is =], .. according to the above two formulas, available

[0122] [0122]

Figure CN102724148BD00114

[0123] 根据上式和前面SNR的表达式,有2 :• [0123] The preceding expressions and formulas of SNR with 2: •

[0131] 定义一个大小为MXN的矩阵P,且其元素Pm,"=[門m,。满足 [0131] define a matrix of size P MXN, and which elements Pm, "= [m ,. gate satisfies

[0132] [0132]

Figure CN102724148BD00115

[0133] 它作为SNR的组合矩阵,有 [0133] The SNR as a combined matrix, there

Figure CN102724148BD00116

Figure CN102724148BD00117

Figure CN102724148BD00118

Figure CN102724148BD00119

Figure CN102724148BD001110

Figure CN102724148BD001111

Figure CN102724148BD001112

Figure CN102724148BD001113

[0136] [0136]

Figure CN102724148BD00121

[0137] 对每一个n,都有一个上述形式的公式。 [0137] Equation for each n, has a form of the above. 将所有该些公式合并为一个矩阵,有[013 引 All of the plurality of formulas into a single matrix with [013 primer

Figure CN102724148BD00122

[0139] 定义C 二[c(i)...cW]嘴B 二比(i)...bW]H.因此,有 [0139] defines two C [c (i) ... cW] B = ratio of the nozzle (i) ... bW] H. Accordingly, there is

[0140] e PBa 二化. [0140] e PBa of the two.

[0141] 则a的最小二乘解为[014引a 二e-ipinv(J*B)Pc Least Square Solution [0141] a is as [a two primers 014 e-ipinv (J * B) Pc

[0143] 其中,pinv(.)表示伪逆操作。 [0143] where, pinv (.) Indicates a pseudo-inverse operation.

[0144] 求解出a后,再根据口/ - 巧和a二[过^,1. • • a^,K-1过1,1. • •过1,K-1],就可W得到经托K,K 过直接信道归一化的串扰信道,如下式表示: 托1 [0144] After the solved a, then according to the port / - and a clever bis [Guo ^, 1 • • a ^, K-1 through 1,1 • • over 1, K-1..], Can be obtained W Torr by K, K through the direct channel crosstalk normalized channel, expressed as follows: 1 Torr

[0145] = -〇,'+ [0145] = -〇, '+

[0146] 根据上述推导,此时计算串扰信道的具体步骤如下: [0146] According to the above derivation, the specific steps crosstalk channels calculated at this time is as follows:

[0147] 选择合适的组合矩阵,根据各条线路上的发送功率和发送信号的组合的系数,计算G = pinv (PB) P ;根据各条线路上的发送功率、发送信号的组合的系数和测量的SNR,计算 [0147] select the appropriate combination of the matrix, a coefficient combination of transmission power and transmitting signals on the respective lines, calculates G = pinv (PB) P; a coefficient combination of the transmission power on the lines, the transmission signal and measured SNR, calculated

Figure CN102724148BD00123

;根据上述计算结果,计算a = e -iGc ;最后,得出经直接信道归一化的串扰信道^二(。,+知KW)/巧,W。 ; Based on the calculation result, calculates a = e -iGc; Finally, directly obtained by the normalized channel crosstalk channels ^ b / Qiao, W (, + know KW.). K'k K'k

[014引为了使性能在普遍的情况下,性能最优,可W事先选择一个矩阵P和B。 [014 lead to performance in the general case, the optimal performance, W may be selected in advance and a matrix P B. 特别地进行如下的选择: In particular the following selection:

[0149] 定义归一化的离散余弦变换的系数如下: [0149] define the normalized discrete cosine transform coefficients is as follows:

[0150] [0150]

Figure CN102724148BD00124

[0151] 把上述的系数写成矩阵形式,并去掉第一行的直流项得: [0151] The above-described coefficient written in matrix form, and remove the DC term of the first row have:

[0152] [0152]

Figure CN102724148BD00125

[015引选定巧作为探测信号矩阵;B = U «。 [015 primer selected as the probe signal matrix clever; B = U «. 该样,芭=U;L:k_i + /巧。 The sample, para = U; L: k_i + / coincidence. .&'。 . & '. 化'_"。设定SNR Of '_. "Setting SNR

[0154] 组合矩阵为;P = U.之所W该么选择的理由是,在反馈回来的SNR受到干扰的时候使信道估计的误差最小。 [0154] matrix composition; P = W by reason of the U. What is selected so that when the channel SNR fed back by the estimated interference minimum error. 另外的一个原因是选择该样的矩阵可W使我们不需要计算PB Another reason is to select the kind of matrix W may be calculated so that we do not need PB

Figure CN102724148BD00126

Figure CN102724148BD00127

Figure CN102724148BD00128

Figure CN102724148BD00129

Figure CN102724148BD001210

矩阵乘积的伪逆。 Pseudo-inverse matrices. 在算法中的G矩阵可W直接通过矩阵P获得。 G matrix W algorithm may be obtained directly by a matrix P. 如下式。 The following equation. 该样可W降低算法的运算复杂度。 The sample W can reduce the computational complexity of the algorithm.

[0 巧引G = pinv(PB)P [0 巧6] = pinv(UU®)P [0 Qiao primer G = pinv (PB) P [0 Qiao 6] = pinv (UU®) P

[0157] = [0157] =

[015引另外,如果用户的数量是2的n次方的话,我们可W选择Walsh-Hadamard序列来生成矩阵B。 [015 cited Further, if the number of users is n-th power of 2, we can select the Walsh-Hadamard sequence W to generate matrix B. 该样的另一个好处是由于Walsh-Hadamard序列是有正负一构成,计算过程中的乘法就可W用简单的加减法来代替。 Another advantage of this kind is due to the Walsh-Hadamard sequence is composed of a positive and negative, multiplication calculation process W can be used in place of the simple subtraction. 当然只要满足本方法要求的任意矩阵B都可W正确的计算出信道矩阵,本方法并不限于上述的选择方法。 Of course, as long as the requirements of the method of any matrix W B can correctly calculate the channel matrix, the present method is not limited to the above selection method.

[0159] 利用不同的组合系数,重复步骤101和步骤102应不少于2K-1次,才能计算出所有其他K-1条线路对第K条线路的串扰。 [0159] using different combinations of coefficients, repeating steps 101 and 102 should be less than 2K-1 times to calculate all the other K-1 lines to crosstalk article K line. 上述重复步骤101和步骤102的次数,是根据加载的其他线路的个数(即要测量的串扰的个数)决定的。 The number of the repeating steps 101 and 102 is (i.e., the number of crosstalk to be measured) according to the number of other loaded lines determined.

[0160] 上述整个过程可W重复多次,不断更新串扰信道,重复的目的是为了提高精度或是进行线路跟踪。 [0160] The whole process can be repeated many times W, crosstalk channels constantly updated, repetitive purpose is to improve the accuracy for line or track.

[0161] 还可W根据计算出来的串扰信道,设计一阶近似的串扰抵消预补偿滤波器,如下式: [0161] W may be calculated according to the crosstalk channels, a design order approximation crosstalk cancellation pre-compensation filter, the following formula:

[0162] [0162]

Figure CN102724148BD00131

[016引其中,offdiag 狂)=X-diag 狂). [Wherein lead 016, offdiag mad) = X-diag mad).

[0164] 本实施例提供的信道估计的方法,通过测量的被加载线路的SNR参数和加载的其它线路的发送信号的组合,计算被加载线路的串扰特性。 Method [0164] The present embodiments provide channel estimation, the parameters are loaded by the combined SNR measured line and other lines of the transmission signal is loaded, calculating crosstalk characteristic line is loaded. 本实施例不需要重新设计设备,而且测量时间短,精度高且有很好的鲁棒性。 The present embodiment does not require re-design of the apparatus, and the measurement time is short, high accuracy and good robustness.

[0165] 如图3所示为本发明实施例二信道估计的系统示意图,该系统至少包括联合收发设备1和对端设备2。 [0165] As shown in Figure 3 present a schematic diagram of the system according to the second embodiment of the invention, channel estimation, the system comprising at least a transceiver device 1 and 2 combined peer device.

[0166] 其中,联合收发设备1包括;加载单元11,接收单元12和计算单元13。 [0166] wherein the joint comprises a transceiver; loading unit 11, receiving unit 12 and calculation unit 13. 加载单元11,用于在信道的一条线路上加载其它线路的发送信号的组合;接收单元12,用于接收对端设备测量的被加载线路的信噪比;计算单元13,用于根据其它线路的发送信号的组合的系数和接收的信噪比,计算被加载线路的串扰信道。 Loading unit 11 for loading a combination of signals sent on other lines in a line of a channel; receiving unit 12, for receiving the signal to noise ratio of the loaded line-side device measured; calculation unit 13, according to the other lines coefficients combined transmission signal and the received signal to noise ratio, calculating crosstalk channels of the loaded line.

[0167] 相应地,对端设备2包括测量单元21,发送单元22。 [0167] Accordingly, 21, transmitting unit 22 side device 2 includes a measuring unit. 测量单元21,用于测量所述被加载线路的信噪比;发送单元22,用于发送测量的信噪比至联合收发设备。 Measuring means 21 for measuring the SNR of the loaded line; and a sending unit 22, configured to send the measured SNR to a combined transmitter and receiver.

[016引如图4所示为本实施例联合收发设备的加载单元的结构示意图。 Schematic structural diagram of a transceiver shown in 4 cases of combined loading unit embodiment of the apparatus [016 introduced in FIG. 联合收发设备的加载单元11可W进一步包括;第一计算单元111和第一加载单元112。 The combined transceiver loading unit 11 may further comprise W; a first calculation unit 111 and a first loading unit 112. 第一计算单元111, 用于计算其它线路的发送信号的组合与步长的乘积;第一加载单元112,用于在被加载线路上加载其它线路的发送信号的组合与步长的乘积。 The first calculation unit 111, used in combination with the step size calculated from the product line of the other transmission signal; a first loading unit 112 for loading the product of step size in combination with the other transmission line signals on the line is loaded.

[0169] 第一计算单元111还可W进一步包括;第二计算单元1111,用于根据各条线路的 [0169] The first calculation unit 111 may further comprise W; second calculating unit 1111, for each line in accordance with

Figure CN102724148BD00132

发送功率和被加载线路未被加载时的信噪比计算步长。 SNR and transmission power line is not loaded are loaded calculation step.

[0170] 本实施例联合收发设备的计算单元13,还用于根据步长和各条线路的发送功率, 计算被加载线路的串扰信道。 [0170] Example embodiment of the present calculation unit 13 combined the transceiver device is further configured according to the step and the transmit power of each line, the line is loaded calculate crosstalk channels.

[017。 [017. 本实施例提供的信道估计的系统和设备,通过测量的被加载线路的SNR参数和加载的其它线路的发送信号的组合,计算被加载线路的串扰特性。 Channel estimates provided by the present embodiment of the system and apparatus, the parameters are loaded by the combined SNR measurement circuit and other signal transmission line load, calculating crosstalk characteristic line is loaded. 本实施例不需要重新设计设备,而且测量时间短,精度高且有很好的鲁棒性。 The present embodiment does not require re-design of the apparatus, and the measurement time is short, high accuracy and good robustness.

[0172] 如图5所示为本发明实施例H信道估计的系统示意图。 [0172] FIG embodiment of the present invention is a system diagram embodiment of a channel estimation H 5. 该系统至少包括联合收发设备3和对端设备4。 The system includes at least a transceiver device 3 and the joint end of the device 4.

[0173] 其中,联合收发设备3包括;加载单元31,发送单元32和接收单元33。 [0173] wherein the joint comprises a transceiver 3; loading unit 31, transmitting unit 32 and receiving unit 33. 加载单元31,用于在信道的一条线路上加载其它线路的发送信号的组合;发送单元32,用于发送所述其它线路的发送信号的组合的系数至对端设备;接收单元33,用于接收对端设备计算的被加载线路的串扰信道。 Loading unit 31 for loading a combination of other signals transmitted on a line in the line channel; a transmission unit 32, the transmission coefficient of the combined transmission signal to the other lines for the peer device; a receiving unit 33, for receiving the crosstalk channels of the loaded line of the peer computing device.

[0174] 相应地,对端设备4包括;测量单元41,接收单元42,计算单元43和发送单元44。 [0174] Accordingly, the peer device 4 comprises; a measuring unit 41, receiving unit 42, calculation unit 43 and transmission unit 44. 测量单元41,用于测量被加载线路的信噪比;接收单元42,用于接收联合收发设备发送的其它线路的发送信号的组合的系数;计算单元43,用于根据其它线路的发送信号的组合的系数和测量的信噪比,计算被加载线路的串扰信道;发送单元44,用于发送计算的串扰信道至联合收发设备。 A measuring unit 41 for measuring the SNR of the loaded line; a receiving unit 42, a combination of the coefficient of transmission signal lines receiving the other joint transceiver transmitting device; calculating unit 43, according to other lines of the transmission signal SNR measurement and combination coefficients, calculating crosstalk channels loaded line; sending unit 44, configured to send the calculated crosstalk channels to a combined transmitter and receiver.

[0175] 如图6所示为本实施例联合收发设备的加载单元的结构示意图。 [0175] FIG schematic structural diagram of a transceiver apparatus combined loading unit of the present embodiment shown in FIG 6. 联合收发设备的加载单元31可W进一步包括;第一计算单元311和第一加载单元312。 The combined transceiver loading unit 31 may further comprise W; a first calculating unit 311 and a first loading unit 312. 第一计算单元311, 用于计算其它线路的发送信号的组合与步长的乘积;第一加载单元312,用于在被加载线路上加载其它线路的发送信号的组合与步长的乘积。 A first calculation unit 311, used in combination with the step size calculated from the product line of the other transmission signal; a first loading unit 312 for loading the product of step size in combination with the other transmission line signals on the line is loaded.

[0176] 第一计算单元311还可W进一步包括;第二计算单元3111,用于根据各条线路的发送功率和被加载线路未被加载时的信噪比计算步长。 [0176] The first calculating unit 311 may further comprise W; second calculating means 3111 for calculating the step size when the transmit power of signal to noise ratio of each line and the load line is not loaded.

[0177] 本实施例联合收发设备3的发送单元32,还用于发送步长和各条线路的发送功率至对端设备。 Transmission unit 3 according to Embodiment combined transceiver [0177] 32 present further configured to send the step and transmit power of each line to the peer device.

[0178] 相应地,本实施例对端设备4的接收单元42,还用于接收联合收发设备发送的步长和各条线路的发送功率;计算单元43,还用于根据接收的步长和各条线路的发送功率, 计算被加载线路的串扰信道。 [0178] Accordingly, the present embodiment of the receiving unit 4 of the terminal device 42, the step of jointly transmitting transceiver and the transmission power of each line for receiving further; calculation unit 43, also according to the received step and transmission power of each of the lines, the line is loaded calculate crosstalk channels.

[0179] 本实施例提供的信道估计的系统和设备,通过测量的被加载线路的SNR参数和加载的其它线路的发送信号的组合,计算被加载线路的串扰特性。 [0179] The present embodiment provides a channel estimation system and apparatus, by combining the transmission signals of other lines is loaded and the SNR of the loaded line parameters measured, calculated crosstalk characteristic of the line is loaded. 本实施例不需要重新设计设备,而且测量时间短,精度高且有很好的鲁棒性。 The present embodiment does not require re-design of the apparatus, and the measurement time is short, high accuracy and good robustness.

[0180] W上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此, 任何熟悉本技术领域的技术人员在本发明掲露的技术范围内,可轻易想到的变化或替换, 都应涵盖在本发明的保护范围之内。 [0180] On the W, the present invention is merely preferred specific embodiments, but the scope of the present invention is not limited within this, any skilled in the art in the art in the technology of the present invention is exposed kei range, changes or replacements readily occur, shall fall within the protection scope of the present invention. 因此,本发明的保护范围应该W权利要求的保护范围为准。 Accordingly, the scope of the present invention W scope of the claims should prevail.

Claims (18)

1. 一种信道估计的方法,其特征在于,包括: 当第K条线路新加入已有的KI条线路的向量组时,在所述第K条线路上加载所述已有的KI条线路的发送信号的组合; 测量加载了所述发送信号的组合的第K条线路的信噪比; 根据所述已有的KI条线路的发送信号的组合的系数和所述测量的信噪比,计算所述第K条线路的串扰信道。 1. A method of channel estimation, characterized by comprising: when a new line is added K-th vector set existing lines of KI, KI loading the existing lines in the K-th line combined transmission signal; loaded article K measured SNR of the transmission line of the combined signal; combined transmission signals based on the coefficients of the existing lines KI and the measured signal to noise ratio, calculating a K-th line of the crosstalk channel.
2. 如权利要求1所述的一种信道估计的方法,其特征在于,在所述第K条线路上加载所述已有的KI条线路的发送信号的组合,具体包括:根据公式Xinl(Z) =Sr(ZHstizfW),在第K条线路的发送信号上添加已有的第1到第KI条线Z=I 路的发送信号的组合,其中,ε为步长,为在第η个SNR测量期间第i条线路的组合系数,为在第η个SNR测量期间第i条线路上的第1个符号所需发送的信号,χ^/;)为第K条线路上实际发送的信号。 A channel 2. The method according to claim 1 estimates, wherein the load combination of transmission signals KI lines existing on the K-th line, comprises: according to formula Xinl ( Z) = Sr (ZHstizfW), was added a combination of transmission signals has a first section line Z = I KI to the passage on the line K-th transmission signal, wherein, in steps [epsilon], to a first η combination coefficient i-th line during SNR measurement, the signal is in the first η i th line during a first SNR measurement desired symbol transmitted, χ ^ /;) is a signal actually transmitted on the line K-th .
3. 如权利要求2所述的一种信道估计的方法,其特征在于,所述#满足(Hf=1。 /=1 3. The method of channel estimation according to claim 2, characterized in that said satisfies # (Hf = 1. / = 1
4. 如权利要求2所述的一种信道估计的方法,其特征在于,所述ε满足ε=nVnl^5A^(〇) 其中,4:表示在第i条线路上的发送功率;表示第k条线路在未被加载信号时接收端的信噪比。 4. The method of channel estimation according to claim 2, characterized in that the [epsilon] satisfies ε = nVnl ^ 5A ^ (square) where 4: represents transmission power in the i-th line; represents k lines SNR at the receiving end the signal is not loaded.
5. 如权利要求2所述的一种信道估计的方法,所述ε被设置为一个值,使得在加载了发送信号的组合后第K条线路的接收端SNR降低值不大于3. 5dB。 A channel 5. The method according to claim 2 estimates, the ε is set to a value such that after loading a combination of transmission signals receiving end SNR decreases article K line is not greater than 3. 5dB.
6. 如权利要求1到5任一项所述的一种信道估计的方法,其特征在于,所述第K条线路的串扰信道为经所述第K条线路的直接信道归一化的串扰信道。 6. The method of any of 1-5 A channel estimation of one of the preceding claims, wherein the crosstalk channels of the K-th line is a direct channel through said K-th line is normalized crosstalk channel.
7. -种联合收发设备,其特征在于,包括: 加载单元,用于在第K条线路上加载已有的KI条线路的发送信号的组合;所述第K条线路为新加入的线路; 接收单元,用于接收对端设备测量的所述加载了所述发送信号的组合的第K条线路的信噪比; 计算单元,用于根据所述已有的KI条线路的发送信号的组合的系数和所述接收的信噪比,计算所述第K条线路的串扰信道。 7. - kind of combined transceiver, characterized by comprising: a loading unit configured to load a combination of signals sent on the existing K-th line KI lines; said K-th line is a line newly added; receiving means for receiving the end loading device measures the SNR of the K-th transmission lines combined signal; calculating means, for transmitting a signal according to a combination of the existing lines of KI coefficients and the received signal to noise ratio, calculating a K-th line of the crosstalk channel.
8. 如权利要求7所述的一种联合收发设备,其特征在于,所述加载单元包括: 第一计算单元,用于计算所述已有的KI条线路的发送信号的组合与步长的乘积; 第一加载单元,用于在所述第K条线路上加载所述已有的KI条线路的发送信号的组合与所述步长的乘积。 8. A combined transceiver apparatus according to claim 7, wherein the loading unit comprises: a first calculating means for calculating a step in combination with the existing transmission signal KI strip line length product; a first loading means for loading the combined length of the transmission signal KI existing lines with the product of step in the K-th line.
9. 如权利要求8所述的一种联合收发设备,其特征在于,所述第一计算单元进一步包括: 第二计算单元,用于根据各条线路的发送功率和所述第K条线路在未被加载所述发送信号的组合时的信噪比计算所述步长。 9. A combined transceiver apparatus according to claim 8, wherein the first calculating unit further comprises: a second calculating unit for the transmission power of each line and the line K-th the unloaded when the transmission of the combined signal to noise ratio calculating step.
10. 如权利要求9所述的一种联合收发设备,其特征在于,所述计算单元,还用于根据所述步长和所述各条线路的发送功率,计算所述第K条线路的串扰信道。 10. A combined transceiver apparatus according to claim 9, wherein said calculation unit further configured to transmit the power and the step size of each line, calculating the K-th line crosstalk channel.
11. 一种信道估计的系统,其特征在于,包括:联合收发设备和对端设备; 所述联合收发设备包括: 加载单元,用于在第K条线路上加载已有的KI条线路的发送信号的组合;所述第K条线路为新加入的线路; 接收单元,用于接收对端设备测量的所述加载了所述发送信号的组合的第K条线路的信噪比; 计算单元,用于根据所述已有的KI条线路的发送信号的组合的系数和所述接收的信噪比,计算所述第K条线路的串扰信道; 所述对端设备,包括: 测量单元,用于测量所述加载了所述发送信号的组合的第K条线路的信噪比; 发送单元,用于发送所述测量的信噪比至所述联合收发设备。 11. A channel estimation system, comprising: a transceiver device and a joint end of the device; and the combined transmitting and receiving apparatus comprising: a loading unit, configured to send an existing load on the line K-th lines of KI combined signal; said K-th line is a newly added line; receiving means for receiving the terminal apparatus measures the SNR of the loaded line K-th transmission of the combined signal; calculating means, the coefficients for the combination of the existing signal transmission lines KI and the received signal to noise ratio, calculating the crosstalk channels of line K article; the peer apparatus, comprising: a measuring unit, with measuring the load on the signal to noise ratio of the K-th transmission lines of the combined signal; transmitting means to signal to noise ratio for the transceiver device transmits the combined measurement.
12. 如权利要求11所述的一种信道估计的系统,其特征在于,所述计算单元,还用于根据步长和各条线路的发送功率,计算所述第K条线路的串扰信道。 12. A channel system according to claim 11 estimates, wherein the calculation unit is further configured according to the step and the transmit power of each line, calculating the K-th line of the crosstalk channel.
13.-种联合收发设备,其特征在于,包括: 加载单元,用于在第K条线路上加载已有的KI条线路的发送信号的组合;所述第K条线路为新加入的线路; 发送单元,用于发送所述已有的KI条线路的发送信号的组合的系数至对端设备; 接收单元,用于接收所述对端设备计算的所述加载了所述发送信号的组合的第K条线路的串扰信道。 13.- Joint species transceiver, characterized by comprising: a loading unit configured to load a combination of signals sent on the existing K-th line KI lines; said K-th line is a line newly added; transmission means for the combined coefficient KI conventional strip line transmission signal is transmitted to the peer device; receiving means for receiving the end of the computing device loaded with a combination of the transmitted signal section K crosstalk channel lines.
14. 如权利要求13所述的一种联合收发设备,其特征在于,所述加载单元包括: 第一计算单元,用于计算所述已有的KI条线路的发送信号的组合与步长的乘积; 第一加载单元,用于在所述第K条线路上加载所述已有的KI条线路的发送信号的组合与所述步长的乘积。 14. A combined transceiver apparatus according to claim 13, wherein the loading unit comprises: a first calculating means for calculating a step in combination with the existing transmission signal KI strip line length product; a first loading means for loading the combined length of the transmission signal KI existing lines with the product of step in the K-th line.
15. 如权利要求14所述的一种联合收发设备,其特征在于,所述第一计算单元进一步包括: 第二计算单元,用于根据各条线路的发送功率和所述第K条线路在未被加载所述发送信号的组合时的信噪比计算所述步长。 15. A combined transceiver apparatus according to claim 14, wherein the first calculating unit further comprises: a second calculating unit for the transmission power of each line and the line K-th the unloaded when the transmission of the combined signal to noise ratio calculating step.
16. 如权利要求15所述的一种联合收发设备,其特征在于,所述发送单元,还用于发送所述步长和所述各条线路的发送功率至所述对端设备。 16. A combined transceiver apparatus according to claim 15, wherein the sending unit is further configured to transmit the transmission power and the step size of each line to the peer device.
17.-种信道估计的系统,其特征在于,包括:联合收发设备和对端设备; 所述联合收发设备包括: 加载单元,用于在第K条线路上加载已有的KI条线路的发送信号的组合;所述第K条线路为新加入的线路; 发送单元,用于发送所述已有的KI条线路的发送信号的组合的系数至对端设备; 接收单元,用于接收所述对端设备计算的所述加载了所述发送信号的组合的第K条线路的串扰信道; 所述对端设备,包括: 测量单元,用于测量所述第K条线路的信噪比; 接收单元,用于接收所述联合收发设备发送的所述已有的KI条线路的发送信号的组合的系数; 计算单元,用于根据所述已有的KI条线路的发送信号的组合的系数和所述测量的信噪比,计算所述第K条线路的串扰信道; 发送单元,用于发送所述计算的串扰信道至所述联合收发设备。 17.- type of channel estimation system, characterized by comprising: a transceiver device and a joint peer device; the combined transmitting and receiving apparatus comprising: a loading unit, configured to send an existing load on the line K-th lines of KI combined signal; said K-th line is a newly added line; transmitting means for transmitting the coefficients of the combined signal prior to transmission lines of KI to the peer device; receiving means for receiving the the peer computing device loads the crosstalk channels of line K-th of the transmission of the combined signal; the peer apparatus, comprising: a measuring unit for measuring the signal to noise ratio of the K-th line; receiving means for receiving said combination coefficient transceiver transmitting said combined apparatus KI conventional signal transmission lines; calculating unit, a coefficient for the combined signal of the existing transmission lines and KI the measured signal to noise ratio, calculating the crosstalk channels of line K article; transmitting means for transmitting the calculated crosstalk channels to said combined transmitter and receiver.
18.如权利要求17所述的一种信道估计的系统,其特征在于,所述联合收发设备的发送单元,还用于发送步长和各条线路的发送功率至所述对端设备; 所述对端设备的计算单元,还用于根据所述步长和所述各条线路的发送功率,计算所述第K条线路的串扰信道。 18. A channel system according to claim 17 estimates, wherein said transmitting apparatus combined transceiver unit is further configured to send the step and transmit power to the terminal apparatus of each line; the said computing unit end device, according to the further steps and the transmit power of each line, calculating the K-th line of the crosstalk channel.
CN 201210228973 2008-02-28 2008-02-28 Method, device and system for information channel estimating CN102724148B (en)

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Citations (2)

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US6580752B1 (en) * 1998-12-08 2003-06-17 Globespanvirata, Inc. Alternative configurations for an ADSL system operating in a time duplex noise environment
WO2008009853A1 (en) * 2006-07-21 2008-01-24 France Telecom Method for estimating a channel in a coordinated system when a line is taken into operation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6580752B1 (en) * 1998-12-08 2003-06-17 Globespanvirata, Inc. Alternative configurations for an ADSL system operating in a time duplex noise environment
WO2008009853A1 (en) * 2006-07-21 2008-01-24 France Telecom Method for estimating a channel in a coordinated system when a line is taken into operation

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