CN102195668B - Mobile communication system, the performance of rake receiver fingers to lift configuration management method - Google Patents

Mobile communication system, the performance of rake receiver fingers to lift configuration management method Download PDF

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CN102195668B
CN102195668B CN 201010123447 CN201010123447A CN102195668B CN 102195668 B CN102195668 B CN 102195668B CN 201010123447 CN201010123447 CN 201010123447 CN 201010123447 A CN201010123447 A CN 201010123447A CN 102195668 B CN102195668 B CN 102195668B
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CN 201010123447
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CN102195668A (en )
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许大山
王玺政
吴宇鹏
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上海摩波彼克半导体有限公司
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Abstract

本发明涉及一种移动通信系统中实现耙型接收器性能提升的耙指配置管理方法,包括:耙型接收器接收无线通信信号并得到无符码间干扰波形、进行无功能耙指的侦测处理得到已经分配的无功能耙指、移除并回收该已经分配的无功能耙指。 The present invention relates to a mobile communication system implemented rake receiver finger to enhance performance configuration management method, comprising: a rake receiver for receiving a wireless communication signal and with no inter-symbol interference waveform, a non-functional finger detection treatment functions obtained already allocated finger without removing and recovering the non-functional already assigned fingers. 采用该种移动通信系统中耙型接收器性能提升的耙指配置管理方法,而系统性能得到了明显的改善,特别是在高信噪比或多重路径衰减机制的严苛通信环境中更加显示出了优势;同时,也可以因而节省宝贵的耙指的数目,节省下来的耙指可以被接收器再次使用,得到更进一步的系统效能改善;而且由于减少了多余的无功能耙指,可避免多余的软硬件处理功耗,从而最大限度的利用了系统资源,工作性能稳定可靠、适用范围较为广泛。 With this kind of mobile communication systems improve the performance of rake receiver fingers of the configuration management methods, and the system performance is significantly improved, especially in the more exhibit a high signal to noise ratio or multipath attenuation mechanism harsh communication environment advantage; the same time, and thus can save the number of fingers, the fingers can be saved by using a receiver again to give a further improvement in system performance; and by reducing the excess non-functional finger, can avoid unnecessary software and hardware processing power, to maximize the use of system resources, stable and reliable performance, the wider scope.

Description

移动通信系统中耙型接收器性能提升的耙指配置管理方法 Mobile communication system, the performance of rake receiver fingers to lift configuration management method

技术领域 FIELD

[0001] 本发明涉及移动通信领域,特别涉及移动通信系统的耙型接收器技术领域,具体是指一种移动通信系统中耙型接收器性能提升的耙指配置管理方法。 [0001] The present invention relates to the field of mobile communications, particularly to a technical field rake receiver of the mobile communication system, in particular to a mobile communication system, the performance of rake receiver fingers to lift configuration management method.

背景技术 Background technique

[0002] 直序扩频(DS)是一种扩频的技巧。 [0002] Direct Sequence Spread Spectrum (DS) is a spread spectrum technique. 经由直序扩频,传送信号会在一个宽的频率范围中被延展开来。 Via a direct sequence spread spectrum, signal is transmitted spreading itself over a wide frequency range. 这可以允许信号在严重干扰的环境中还能被侦测出来。 This may allow the signal in severe interference environments can be detected out. 通过使用直序扩频的技术,多个点对点的通信可以同时使用而不会被彼此所干扰影响。 By using direct sequence spread spectrum technology, a plurality of point to point communications may interfere with one another without being used simultaneously impact. 这种直序扩频信号同时共享同一块频谱的概念即为码分多址。 This direct sequence spread spectrum signals simultaneously share the same frequency spectrum is the concept of code division multiple access. 一些现代化的蜂窝式标准都是以码分多址为准则所发展出来的,像是3GPP - FDD标准系列(通常也称为宽带码分多址),3GPP 一TDD标准系列(通常也称为分时一同步码分多址)和3GPP2标准系列(通常也称为码分多址)。 Some modern cellular standards are based on Code Division Multiple Access criteria developed out of, such as 3GPP - FDD standard series (also commonly referred to as wideband code division multiple access), 3GPP TDD standard a series (also commonly referred to points when a synchronous code division multiple access) and 3GPP2 standard series (commonly referred to as Code Division Multiple Access).

[0003] 在无线通信系统里,从传送端传送出来的信号通常都会遭遇散射、反射、噪声和衰减等效应分散成多重路径抵达接收端,多重路径意指射频信号由传送端经由一个以上的路径到接收天线的传播现象如图一所示,多重路径成因通常是由大气层折射反射或地面物体(建筑物,山丘)反射。 [0003] In a wireless communication system, is transmitted from the transmitting side out signal typically will experience scattering effects, reflections, noise, attenuation and dispersion into the multi-path receiving terminal arrival, multipath is meant by the radio frequency signal transmitting end via one or more paths to the receiving antenna shown in FIG propagation phenomena a Cause is usually caused by atmospheric multipath reflection or refraction ground objects (buildings, hills) reflection. 这些效应会导致接收器在不同的时间接收到延迟传播及衰减的信号。 These effects will cause the receiver receives the signal attenuation and propagation delay at different times.

[0004] 多重路径会引发符码间相互干扰(inter — symbol interference)导致接收信号质量大幅降低,当多路径现象出现时,它通常是接收器所必须应付的一种重要通道非理想特性。 [0004] Multiple paths can lead to interference between codes (inter - symbol interference) results in significantly reduced quality of the received signal, when the multipath phenomenon, it is usually an important characteristic of non-ideal channel receiver must meet. 如同前面所叙述,由于传送的信号通过不同延迟的路径而来,接收到的信号是一个传送信号在时间轴上被涂抹的版本。 As previously described, since the signals transmitted by different paths from the delay, the received signal is a transmission signal is spread on the time axis version. 因为干扰的来源即为信号本身,与应付热噪声不同的是增强信号功率并无法有效解决多重路径所引发的符码间相互干扰,因此即便没有噪声出现的时候,传送的信号也很难从接收到的信号解回来。 Because the signal itself is the source of interference, thermal noise and to cope with different power and signal enhancement is not effectively resolve the interference between codes caused by multi-path, and therefore, even when no noise is present, a signal transmitted from the receiving difficult Solutions back signal. 多路径现象的另一个问题是通道对不同时间到达的信号会给予一个频率相依的增益。 Another problem is the phenomenon of multi-path channel to give a frequency-dependent gain signal arrival time will be different. 换句话说,传送信号的某些频率成份会被其它频率的信号所干扰。 In other words, certain frequency components of the transmission signal is an interference signal at other frequencies. 有时候接收器尽管离传送端很近,但信号衰减现象还是可能会严重到某个频率的信号整个消失不见。 Sometimes the receiver from the transmitter although very close, but the signal loss is likely to be a serious signal frequency of the entire disappear.

[0005] 在移动的环境中如手机在行驶于市区的车内,由不同路径而来的接收信号的衰减及相位变化是随机现象。 [0005] In the mobile environment, such as mobile phones in the car traveling in urban areas, the attenuation and phase variation of the received signal from different paths of a random phenomenon. 这类的随机现象的标准统计模型为雷利分布或雷利衰减(Rayleigh fading),若雷利分布加上一个很强的直线传播路径则称为莱辛分布或莱辛衰减(Rician fading)。 Standard statistical model of random phenomena such as Rayleigh fading or Rayleigh distribution (Rayleigh fading), if the Rayleigh distribution coupled with a strong straight propagation path is called Lessing Lessing distribution or attenuation (Rician fading). 信号传播时间也会随手机移动速度而变,移动越快则衰减及相位变化越快。 Signal propagation time will vary with the moving speed of a mobile phone, a mobile, the faster the attenuation and phase change faster.

[0006]多路径现象一般对接收器性能来说是不利的,然而,藉由良好的接收机架构及算法设计可有效利用多路径现象提升性能增益。 [0006] multipath phenomenon generally for receiver performance is unfavorable, however, with a good receiver architecture and algorithm design can effectively leverages multipath improve performance gain. 已知不同路径而来的信号承载相同的信息,如果某一路径如直线而来的信号遭物体完全挡住,接收机仍有机会可以从其它路径而来的信号取得传送的信息,此即为多样性增益(diversity gain)。 Known from the different paths of the signal carrying the same information, if a signal path such as a straight line from the object was completely blocked, the receiver may still have a chance to acquire information from the signal transmitted from the other path, that is, for various of gain (diversity gain).

[0007] 在扩频通信系统里,耙型接收器被广为使用来应付多重路径延迟所造成的符码间相互干扰,顾名思义耙型接收器是由一些耙指所组成,每根耙指是为了要提炼出每个特定无线信道路径的能量而存在。 [0007] In a spread spectrum communication system, the rake receiver is used widely to cope with multipath delay interference between codes caused, by definition rake receiver is composed by a number of fingers, each finger is in order to extract the energy of each particular radio channel path exists. 利用伪随机扰码(PN sequence)的特性,接收机可以找出信号相对的延迟时间用于耙指配置。 A pseudo-random scrambling code (PN sequence) characteristic, a receiver can find a relative delay time of the signal for finger configuration. 这些耙指的输出被结合在一起而形成软度量值(softvalue)以供接下来的译码器使用。 The finger outputs are combined together to form a soft metric (softvalue) decoder for subsequent use. 事实上,在码分多址、宽带码分多址和分时一同步码分多址标准中,以耙型接收器为基准的接收器是系统预设的接收器结构。 In fact, in CDMA, wideband code division multiple access and time division synchronous code division multiple access standard one, to rake receiver is a reference receiver is a receiver system default configuration.

[0008] 耙型接收器会分配多个耙指去追踪和解调多路径信号的成份。 [0008] The rake receiver is a plurality of fingers assigned to track and demodulate the multipath signal components. 一般来说,耙型接收器的耙指被分配给拥有比较强信号成份的多路径群。 Generally, the rake receiver fingers has a strong multi-path signal components are allocated to the group. 这意思即是说,第一根耙指被分配给拥有最强信号的路径;第二根耙指被分配给拥有第二强信号的路径,依此类推。 This means to say, the first finger root path has the strongest signal is assigned; a second path having a second finger is assigned to a strong signal, and so on. 这些耙指的输出被结合形成软度量值以提供给后面的译码器使用。 The finger outputs are combined to form a soft metric values ​​to provide to the back of the decoder used. 多个耙指软性合并的方法有选择多样性(select1n diversity),等增益合并(equal gain combining),及最大比例合并(maximum rat1 combining)。 A plurality of flexible fingers are selectively incorporated methods diversity (select1n diversity), equal gain combining (equal gain combining), and maximum ratio combining (maximum rat1 combining).

[0009] 耙指资源的配置对于耙型接收器的性能来说是一个很重要的课题,且已分配的耙指需要有效的方法追踪路径延迟时间的变化。 [0009] The finger allocation of resources is very important to the performance of a rake receiver for the subject, and changes the assigned fingers need for an effective way to track the path delay time. 现今很多文件都在讨论接收器如何配置耙指到适当的位置上,具体请参阅以下美国专利文献: Many documents are now discussing how to configure the receiver finger to the proper position, as described in the following U.S. Patents:

[0010] # US7190750,Rake receiver for tracking closely spaced multipath [0010] # US7190750, Rake receiver for tracking closely spaced multipath

[0011] # US5978423,Method and arrangement of signal tracking and aRake-receiver utilizing the arrangement [0011] # US5978423, Method and arrangement of signal tracking and aRake-receiver utilizing the arrangement

[0012] # US6078611, Rake receiver andIf^gmanagement method for spread spectrumcommunicat1n [0012] # US6078611, Rake receiver andIf ^ gmanagement method for spread spectrumcommunicat1n

[0013] # US20070098051, Rake receiver |E 指assignment based on signal pathconcentrat1n [0013] # US20070098051, Rake receiver | E refers to the assignment based on signal pathconcentrat1n

[0014] 这些专利文献主要的思想是从节省耙指的使用量观点去看的。 [0014] The main idea from the patent document is used in an amount finger saving point of view to see it. 耙指管理方面最严重的问题是多个分配的耙指因多重路径的变化及移动而重迭,这对系统效能有负面的影响。 Finger management of the most serious problem is more due to changes in the distribution of fingers and move multiple paths and overlap, which has a negative impact on system performance. 原因如下所述:对于某一路径分配超过一个耙指是浪费系统的资源并且降低接收信号质量;不同耙指结合而成的路径能量常用于控制不同的系统变量,像是估计信噪比及功率控制等,额外的耙指被使用去接收其它多路径成份将会得到比较好的系统效能。 The reason is as follows: a distribution path for more than one finger is a waste of system resources and reduces the quality of the received signal; bonded different fingers used to control the path of the energy systems of different variables, such as SNR and estimated power control, additional finger is used to receive the multipath components of the other will be a better system performance. 此外,结合迭合耙指的输出和非迭合耙指的输出将会导致错误率的增加,这是因为相较于非迭合耙指输出之下,较多且不当的权重将分配给迭合耙指路上获得的输出(具体请参阅美国专利文献:US7190750,Rake receiver for tracking closely spaced multipath)。 In addition, the combination of overlapping finger output and non-congruent finger output will result in increased error rate, because compared to the non-congruent finger below the output, not when more weight is assigned to Diego engagement finger outputs the obtained path (see particularly U.S. Patent Document: US7190750, rake receiver for tracking closely spaced multipath). 系统具有良好的控制耙指动作机制可在上述情境中获致更佳的性能。 A control system having good finger actuator mechanism of action may be eligible for better performance in the above context.

[0015] 由于噪声和多路径的效应,耙指的配置问题还有下述情况:系统分配耙指到一个接收不到信号而只有噪声的位置(亦或某路径信号突然消失)。 [0015] Since the effects of noise and multipath, the finger also problems following configuration: The system assigns fingers to not receive a noise-only signal and a position (a path signal or will suddenly disappeared). 这个错误的耙指配置将会造成系统效能的损失。 This error will cause the loss of fingers configured system performance. 比较少的文献在谈论上述的话题,这是因为大部分的文献都假设耙型接收器只有为数不多的耙指可供使用。 Less literature talking about the above topic, because most of the literature assumes that rake receiver that only a handful of fingers available. 但随着工业技术的成长,实际可用接收器的设计可能可以允许有越来越多的耙指使用在其中,因此耙指可使用的数目随着时间将渐渐的不再是个问题,特别是宽带码分多址标准支持六小区软切换,接收机至少需要有能力管理六个以上的耙指。 But with the growth of industrial technology, the actual available design of the receiver may be able to allow an increasing number of fingers used which, therefore the number of fingers that can be used over time will gradually no longer an issue, especially broadband CDMA standards support the six-cell soft handover, the receiver needs to have the ability to manage at least more than six fingers.

发明内容 SUMMARY

[0016] 本发明的目的是克服了上述现有技术中的缺点,提供一种能够明显改善系统性能、提高系统资源利用率、节省软硬件处理功耗、工作性能稳定可靠、适用范围较为广泛的移动通信系统中耙型接收器性能提升的耙指配置管理方法。 [0016] The object of the present invention is to overcome the disadvantages of the prior art described above, provide a significant improvement in system performance, improved utilization of system resources, hardware and software processing power saving, stable and reliable performance, the wider the scope of mobile communication system, the performance of rake receiver fingers to lift configuration management method.

[0017] 为了实现上述的目的,本发明的移动通信系统中耙型接收器性能提升的耙指配置管理方法如下: [0017] To achieve the above object, a mobile communication system of the present invention to enhance the performance of rake receiver fingers of configuration management as follows:

[0018] 该移动通信系统中实现耙型接收器性能提升的耙指配置管理方法,其主要特点是,所述的方法包括以下步骤: [0018] The mobile communication system implemented rake rake receiver performance lift finger configuration management method, its main features, the method comprising the steps of:

[0019] (I)耙型接收器接收无线通信信号,并基于该无线通信信号得到相应的无符码间干扰波形; [0019] (I) rake receiver for receiving a wireless communication signal, and a signal obtained based on the wireless communication between the respective codes without interference waveform;

[0020] (2)根据所述的无符码间干扰波形以及各个已经分配的耙指进行无功能耙指的侦测处理,并得到已经分配的无功能耙指; [0020] (2) According to the inter-symbol interference unsigned waveforms and each rake finger has been assigned for non-functional finger detection process, and has been assigned non-functional finger;

[0021] (3)所述的耙型接收器移除并回收该已经分配的无功能耙指。 [0021] (3) said rake receiver that has been assigned to remove and recover the non-functional finger.

[0022] 该移动通信系统中实现耙型接收器性能提升的耙指配置管理方法中的进行无功能耙指的侦测处理,包括以下步骤: [0022] The mobile communication system implemented rake rake receiver performance upgrade configuration management method refers to non-functional finger detection process, comprising the steps of:

[0023] (11)耙型接收器侦测各个已经分配的耙指中是否存在第一类型无功能耙指,该第一类型无功能耙指是由于该耙型接收器错误的通道能量侦测而分配的耙指,且该耙指接收并追踪单纯因为噪声所形成的假信号路径; [0023] (11) detects the respective rake receivers already assigned fingers in the presence or absence of a first type non-functional finger, the first type is non-functional due to the finger Rake receiver is the channel energy detection error allocated fingers, and the rake receiver and path tracking spurious noise simply because the formed;

[0024] (12)如果存在,则将该第一类型无功能耙指作为已经分配的无功能耙指记录下来; [0024] (12) if present, the type of the first non-functional finger has been assigned as a non-functional finger record;

[0025] (13)耙型接收器侦测各个已经分配的耙指中是否存在第二类型无功能耙指,该第二类型无功能耙指是由于该耙型接收器所分配的追踪强信号路径旁的副瓣信号的耙指; [0025] (13) detects the respective rake receivers already assigned fingers whether there is a second type of non-functional finger, the second finger type non-functional due to the strong signal tracking rake receiver is allocated finger next to the sidelobe signal path;

[0026] (14)如果存在,则将该第二类型无功能耙指作为已经分配的无功能耙指记录下来; [0026] (14) if present, the second type of non-functional finger has been assigned as non-functional finger record;

[0027] (15)耙型接收器侦测各个已经分配的耙指中是否存在第三类型无功能耙指,该第三类型无功能耙指是由于多路径漂移使得两个路径能量恰巧完全合并成一个路径的情形下彼此因为个别的多路径时序追踪机制而被相互阻碍的已经分配的两个耙指中的一个; [0027] (15) detects the respective rake receivers already assigned fingers whether there is a third type of non-functional finger, the third finger type is non-functional due to multipath energy drift paths such that two full consolidation happens next to a path of the case because the individual multi-path timing tracking mechanism are two mutually hinder each other rake fingers have been assigned to one;

[0028] (16)如果存在,则将该第三类型无功能耙指作为已经分配的无功能耙指记录下来。 [0028] (16) if present, the third type of non-functional finger has been assigned as non-functional finger recorded.

[0029] 该移动通信系统中实现耙型接收器性能提升的耙指配置管理方法中的耙型接收器侦测各个已经分配的耙指中是否存在第一类型无功能耙指,包括以下步骤: [0029] The mobile communication system implemented rake rake receiver performance lift finger rake receiver configuration management method of detecting each of the already assigned fingers in the presence or absence of the first type non-functional finger, comprising the steps of:

[0030] (21)耙型接收器依次判断各个已经分配的耙指所侦测到的信号能量是否小于系统预设的第一能量门限值Thl ; [0030] (21) sequentially rake receiver that determines whether each of the fingers have been assigned to the detected signal energy is less than the first energy threshold value preset by the system of Thl;

[0031] (22)如果是,则该耙指为第一类型无功能耙指。 [0031] (22) If so, the finger is a first finger type non-functional.

[0032] 该移动通信系统中实现耙型接收器性能提升的耙指配置管理方法中的系统预设的第一能量门限值Thl通过以下公式得到: [0032] The mobile communication system implemented rake receiver performance rake finger lift system configuration management method of the first predetermined threshold Thl energy obtained by the following formula:

[0033] Thl = K - A - 2B ; [0033] Thl = K - A - 2B;

[0034] 其中,K为该耙型接收机的全部接收信号的能量,A为导频信道能量差值,B为导频信号能量标准差。 [0034] where, K for all the energy of the received signal rake receiver, A is a pilot channel energy difference, B is the standard deviation of the pilot signal energy.

[0035] 该移动通信系统中实现耙型接收器性能提升的耙指配置管理方法中的无符码间干扰波形可以为升余弦波形,相应的滚边因子小于0.3,所述的导频信道能量差值为30dB,所述的导频信号能量标准差为ldB。 [0035] The mobile communication system rake implement a rake receiver that performance means disposed between management method without codes interference waveform may be raised cosine waveform corresponding trim factor is less than 0.3, the pilot channel energy difference is 30dB, the pilot signal energy standard deviation ldB.

[0036] 该移动通信系统中实现耙型接收器性能提升的耙指配置管理方法中的滚边因子为0.22。 [0036] The mobile communication system implemented rake rake receiver performance lift finger piping configuration management method factor of 0.22.

[0037] 该移动通信系统中实现耙型接收器性能提升的耙指配置管理方法中的耙型接收器侦测各个已经分配的耙指中是否存在第二类型无功能耙指,包括以下步骤: [0037] The mobile communication system implemented rake rake receiver performance lift finger rake receiver configuration management method of detecting each of the already assigned fingers whether there is a second type of non-functional finger, comprising the steps of:

[0038] (31)耙型接收器依次判断各个已经分配的耙指的位置与邻近耙指的位置之间是否满足以下关系: [0038] (31) sequentially rake receiver that determines whether each satisfies the following relationship between the finger has been assigned a position adjacent to the finger position:

[0039] I耙指位置一邻近耙指位置I < G — 0.125个码元; [0039] I position a finger adjacent the finger position I <G - 0.125 symbols;

[0040] 其中,G为副瓣信号的位置与相应的主瓣信号位置所相差的码元个数; [0040] wherein, G is the number of symbol element position sidelobe signal corresponding to the position of the main lobe signal phase difference;

[0041] (32)如果不满足,则选取下一个已经分配的耙指,并重复上述步骤(31); [0041] The lower (32) If not, select an already allocated finger, and repeating the above steps (31);

[0042] (33)如果满足,则判断该耙指所侦测到的信号能量是否小于该邻近耙指所侦测到的信号能量,且两者的差值不小于系统预设的第一能量门限差值Th2_l ; [0042] (33) If so, the finger is determined whether the detected signal energy is less than the energy of the signal detected by the adjacent fingers, and the difference between the two is not smaller than a first predetermined energy system threshold difference Th2_l;

[0043] (34)如果否,选取下一个已经分配的耙指,并重复上述步骤(31); [0043] (34) If not, the next select an already allocated finger, and repeating the above steps (31);

[0044] (35)如果是,则判断该耙指所侦测到的信号能量是否大于该耙指的位置之前0.5个码元位置处的信号能量,且两者的差值不小于系统预设的第二能量门限差值Th2_2,或者该耙指所侦测到的信号能量是否大于该耙指的位置之后0.5个码元位置处的信号能量,且两者的差值不小于系统预设的第二能量门限差值Th2_2 ; [0044] (35) before the signal energy at if so, determining whether the finger detected by the signal energy is greater than the finger position 0.5 yards cell location, and the difference between the two systems is not less than the preset a second energy threshold difference Th2_2, or whether the fingers to the detected signal energy is greater than the energy of the signal after the finger at a position 0.5 yards cell location, and the difference between the two systems is not less than the preset a second energy threshold difference Th2_2;

[0045] (36)如果否,则选取下一个已经分配的耙指,并重复上述步骤(31); [0045] The lower (36) if no, select an already allocated finger, and repeating the above steps (31);

[0046] (37)如果是,则该耙指为第二类型无功能耙指。 [0046] (37) If so, the finger is a second type of non-functional finger.

[0047] 该移动通信系统中实现耙型接收器性能提升的耙指配置管理方法中的无符码间干扰波形可以为升余弦波形,相应的滚边因子小于0.3,所述的第一能量门限差值Th2_l为13dB,所述的第二能量门限差值Th2_2为6dB。 [0047] The mobile communication system implemented rake rake receiver performance lifting means disposed between the management method of interference-free codes raised cosine waveform may be a waveform, corresponding trim factor is less than 0.3, the difference between a first energy threshold Th2_l value is 13dB, the second energy threshold difference Th2_2 is 6dB.

[0048] 该移动通信系统中实现耙型接收器性能提升的耙指配置管理方法中的滚边因子为0.22。 [0048] The mobile communication system implemented rake rake receiver performance lift finger piping configuration management method factor of 0.22.

[0049] 该移动通信系统中实现耙型接收器性能提升的耙指配置管理方法中的耙型接收器侦测各个已经分配的耙指中是否存在第三类型无功能耙指,包括以下步骤: [0049] The mobile communication system implemented rake rake receiver performance lift finger rake receiver configuration management method of detecting each of the already assigned fingers whether there is a third type of non-functional finger, comprising the steps of:

[0050] (41)耙型接收器从各个已经分配的耙指中任选两个耙指,判断该两个耙指之间是否相距至少一个码元,且该两个耙指之间是否存在比该两个耙指所侦测到的信号能量更强的能量峰值; [0050] (41) from the respective rake receivers have been assigned to any two fingers in the finger, it is determined whether the distance between the at least one symbol of the two fingers, and the presence or absence of the finger between the two peak ratio of the two fingers to the detected signal energy greater energy;

[0051] (42)如果否,则从各个已经分配的耙指中重新选取两个耙指,并重复上述步骤(41); [0051] (42) If not, from each of the already assigned fingers reselecting the two fingers, and repeating the above steps (41);

[0052] (43)如果是,则该两个耙指为疑似第三类型无功能耙指,判断位置靠前的耙指之前0.5个码元位置处的信号能量是否小于该位置靠前的耙指所侦测到的信号能量,且两者的差值不小于系统预设的第三能量门限值Th3,同时位置靠后的耙指之后0.5个码元位置处的信号能量是否小于该位置靠后的耙指所侦测到的信号能量,且两者的差值不小于系统预设的第三能量门限值Th3 ; [0052] (43) If so, then the two fingers of the third type non-functional pseudo finger, if the signal energy is determined at a position before the front of the finger position is less than 0.5 yards membered front of the rake position refers to a signal energy detected, and the difference between the two systems is not less than a preset third threshold value Th3 is energy, while after the rake by means of the signal energy at a position 0.5 symbols is smaller than the position of the position rearward finger detected by the signal energy, and the difference between the two systems is not less than a preset third threshold value Th3 is energy;

[0053] (44)如果否,则从各个已经分配的耙指中重新选取两个耙指,并重复上述步骤 [0053] (44) If not, from each of the already assigned fingers reselecting the two fingers, and repeat the above steps

(41); (41);

[0054] (45)如果是,则比较该两个耙指所侦测到的信号能量; [0054] (45) if so, comparing the two fingers to the detected signal energy;

[0055] (46)将其中信号能量较弱的耙指作为第三类型无功能耙指。 [0055] (46) where the signal energy is weak fingers as the third type non-functional finger.

[0056] 该移动通信系统中实现耙型接收器性能提升的耙指配置管理方法中的无符码间干扰波形可以为升余弦波形,相应的滚边因子小于0.3,所述的第三能量门限差值Th3为所述的疑似第三类型无功能耙指中侦测到的信号能量中相对小的值。 [0056] The mobile communication system implemented rake rake receiver performance lifting means disposed between the management method of interference-free codes raised cosine waveform may be a waveform, corresponding trim factor is less than 0.3, the difference between a third energy threshold value Th3 is suspected of the third type of non-functional finger signal energy detected in a relatively small value.

[0057] 该移动通信系统中实现耙型接收器性能提升的耙指配置管理方法中的滚边因子为0.22。 [0057] The mobile communication system implemented rake rake receiver performance lift finger piping configuration management method factor of 0.22.

[0058] 该移动通信系统中实现耙型接收器性能提升的耙指配置管理方法中的无符码间干扰波形也可以为根余弦(RRC)波形或者优化升余弦(Better Than Raised Cosine)波形。 [0058] The mobile communication system rake implement a rake receiver that performance means disposed between management method without codes interference waveform may be a waveform or optimized raised cosine (Better Than Raised Cosine) waveform root cosine (RRC).

[0059] 该移动通信系统中实现耙型接收器性能提升的耙指配置管理方法中的移动通信系统可以为CDMA移动通信系统、WCDMA移动通信系统、CDMA2000移动通信系统或者TD —SCDMA移动通信系统。 [0059] The mobile communication system implemented rake rake receiver performance upgrade system configuration management refers to a mobile communication method may be a CDMA mobile communication system, WCDMA mobile communication system, CDMA2000 or TD -SCDMA a mobile communication system a mobile communication system.

[0060] 采用了该发明的移动通信系统中耙型接收器性能提升的耙指配置管理方法,由于其中利用一些有用的判决规则进行无功能耙指的判别和移除、回收,从而系统性能得到了明显的改善,特别是在高信噪比或多重路径衰减机制的严苛通信环境中更加显示出了优势;同时,也可以因而节省宝贵的耙指的数目,节省下来的耙指可以被接收器再次使用,得到更进一步的系统效能改善;而且由于减少了多余的无功能耙指,可避免多余的软硬件处理功耗,从而最大限度的利用了系统资源,工作性能稳定可靠、适用范围较为广泛。 [0060] The mobile communication system of this invention to enhance the performance of rake receiver fingers of the configuration management methods, which utilize some useful since the decision rule for determination of non-functional finger and removal, recovery, to obtain system performance significantly improved, especially in the more exhibits the advantages of high signal to noise ratio or multipath attenuation mechanism harsh communication environment; the same time, thus saving valuable may be the number of fingers, the fingers saved may be received again, yielding further improve system performance; and by reducing the excess non-functional finger, to avoid unnecessary processing power consumption of hardware and software, to maximize the use of system resources, stable and reliable performance, more scope widely.

附图说明 BRIEF DESCRIPTION

[0061] 图1为现有技术中多路径干扰的通信系统区块示意图。 [0061] FIG. 1 is a schematic diagram of a communication system blocks prior art multi-path interference.

[0062] 图2为典型的宽带码分多址接收器示意图。 [0062] FIG. 2 is a schematic view of a typical WCDMA receiver.

[0063] 图3为本发明中所应用的耙型接收器结构示意图。 [0063] FIG. 3 is a schematic structure rake receiver invention is applied.

[0064]图4a〜4e分别为利用本发明的移动通信系统中耙型接收器性能提升的耙指配置管理方法进行各种无功能耙指判别实例示意图。 [0064] FIG 4a~4e respectively using the mobile communication system of the present invention to enhance the performance of rake receiver fingers of the configuration management method for determination of various non-functional finger schematic example.

[0065] 图5为本发明中的使用升余弦波形去展示IS1- free波形的零符号间干扰性质的示意图。 [0065] FIG. 5 of the present invention is the use of a raised cosine waveform diagram interference properties between null symbol waveform to show IS1- free.

具体实施方式 detailed description

[0066] 为了能够更清楚地理解本发明的技术内容,特举以下实施例详细说明。 [0066] In order to more clearly illustrate the technical details, several embodiments of the present invention, the following detailed description.

[0067] 请参阅图1所示,其中是多路径干扰的通信系统区块图。 [0067] Please refer to FIG. 1, a block diagram of a communication system wherein a multi-path interference. 在这种通信环境中,传送的信号在到达目的地前会被不同的障碍物所阻挡。 In this communication environment, transmitted signals before reaching the destination can be blocked by different obstacles. 因而在传送端和目的地端会产生出不同的传输路径,这些传输路径有不同的信号衰减、延迟和相位移。 Thus transmitting end and the destination end will produce different transmission paths, these paths have different transmission signal attenuation, delay and phase shift.

[0068] 再请参阅图2所示,其是一个典型被用来解调接收到信号的宽带码分多址接收器。 [0068] Referring again to FIG. 2, which is a typical signal is used to demodulate the received wideband code division multiple access receiver. 这个宽带码分多址接收器有以下的组成成分:把型接收器(rake receiver)、解频器(de — spreader)、解交错器(de — interleaver)和译码器(decoder)。 The wideband CDMA receiver has the following components: the type of the receiver (rake receiver), solution inverter (de - spreader), deinterleaver (de - interleaver) and a decoder (decoder). 把型接收器是用来处理多路径效应。 The receiver that is used to handle multipath. 解频器是利用正交码特性区出使用者信息,并区隔不同的使用者,这是码分多址系统所特有的装置。 Solution frequency characteristic of orthogonal code is the use of the user information area, and segments of different users, Code Division Multiple Access system, which is unique to the device. 解交错器和译码器在大部份的商业通信系统中都很常被使用。 Deinterleaver and decoder are most often used in commercial communication systems.

[0069] 再请参阅图3所示,其是一个耙型接收器的结构图。 [0069] Referring again to FIG. 3, which is a configuration diagram of a rake receiver. 它由一个路径搜寻器(pathsearcher),一个控制器,一些把指和一个结合器(combiner)所组成。 It consists of a path searcher (pathsearcher), a controller, and a number to refer to a combiner (Combiner is) composed. 路径搜寻器是用来侦测接收到的导频信号并且使用本地端参考时序所产生出的PN码去解频导频信号,接着路径搜寻器会根据解频导频信号后的信息建构出一个多路径信道的轮廓模型并且将这信道信息传送给控制器。 Path searcher is used to detect the received pilot signal using a PN code generated by the local side reference timing to a solution frequency of the pilot signal, then the search path information will pilot pilot pilot signal according to the solution construct a contour model multipath channel and these channel information to the controller. 控制器利用这个多路径信道的模型去分配一个或多个耙指以为了要搜集出信道路径中传送信号的能量。 The controller uses the model of the multipath channel to assign one or more fingers to collect energy that the transmission signal path of a channel. 例如,控制器分配第一根耙分配给拥有最强接收到信号强度的路径,第二根耙指被分配给拥有第二强接收到信号强度的路径,以此类推,直到全部的耙指都被分配完。 For example, the controller allocates a first root path has the strongest Rake assigned to the received signal strength, the second path has a second finger root strong received signal strength is allocated to, and so on, until all the fingers are already it has been assigned. 耙指的输出在结合器中被结合成软度量值以供接下来的装置所使用。 The finger outputs are combined in the combiner into a soft metric means for subsequent use.

[0070] 本发明的移动通信系统中实现耙型接收器性能提升的耙指配置管理方法,其中包括以下步骤: [0070] The mobile communication system of the present invention, the rake receiver performance achieved rake finger lift configuration management method, comprising the steps of:

[0071] (I)耙型接收器接收无线通信信号,并基于该无线通信信号得到相应的无符码间干扰波形; [0071] (I) rake receiver for receiving a wireless communication signal, and a signal obtained based on the wireless communication between the respective codes without interference waveform;

[0072] (2)根据所述的无符码间干扰波形以及各个已经分配的耙指进行无功能耙指的侦测处理,并得到已经分配的无功能耙指;该进行无功能耙指的侦测处理,包括以下步骤: [0072] (2) The interference waveforms and finger rake fingers have been assigned for each non-functional finger detection process between the free codes, and no function has been allocated; the finger to be non-functional detection process, comprising the steps of:

[0073] (a)耙型接收器侦测各个已经分配的耙指中是否存在第一类型无功能耙指,该第一类型无功能耙指是由于该耙型接收器错误的通道能量侦测而分配的耙指,且该耙指接收并追踪单纯因为噪声所形成的假信号路径;耙型接收器侦测各个已经分配的耙指中是否存在第一类型无功能耙指,包括以下步骤: [0073] (a) the respective rake receivers detect the already assigned fingers in the presence or absence of a first type non-functional finger, the first type is non-functional due to the finger Rake receiver is the channel energy detection error allocated fingers, and the rake receiver and path tracking spurious noise simply because the formed; rake receivers detect respective rake fingers have been assigned a first type if there are non-functional finger, comprising the steps of:

[0074] (i)耙型接收器依次判断各个已经分配的耙指所侦测到的信号能量是否小于系统预设的第一能量门限值Thl ;该第一能量门限值Thl通过以下公式得到: [0074] (i) sequentially rake receiver that determines whether each of the fingers have been assigned to the detected signal energy is less than a first predetermined system energy threshold Thl; the first energy threshold Thl by the following formula get:

[0075] Thl = K - A - 2B ; [0075] Thl = K - A - 2B;

[0076] 其中,K为该耙型接收机的全部接收信号的能量,A为导频信道能量差值,B为导频信号能量标准差;所述的无符码间干扰波形可以为升余弦波形,相应的滚边因子小于0.3,所述的导频信道能量差值为30dB,所述的导频信号能量标准差为IdB ; [0076] where, K for all the energy of the received signal rake receiver, A is the energy difference between the pilot channel, B is the standard deviation of the pilot signal energy; between the interference-free codes may be raised cosine waveform waveform corresponding trim factor is less than 0.3, the pilot channel energy difference is 30dB, the pilot signal energy is IdB standard deviation;

[0077] 所述的滚边因子优选可以为0.22,下同; According to [0077] trim factor may be preferably 0.22, the same below;

[0078] (ii)如果是,则该耙指为第一类型无功能耙指; [0078] (ii) if so, the type of the finger is a first non-functional finger;

[0079] (b)如果存在,则将该第一类型无功能耙指作为已经分配的无功能耙指记录下来; [0079] (b) if present, the type of the first non-functional finger has been assigned as a non-functional finger record;

[0080] (c)耙型接收器侦测各个已经分配的耙指中是否存在第二类型无功能耙指,该第二类型无功能耙指是由于该耙型接收器所分配的追踪强信号路径旁的副瓣信号的耙指;耙型接收器侦测各个已经分配的耙指中是否存在第二类型无功能耙指,包括以下步骤: [0080] (c) detecting the respective rake receivers already assigned fingers whether there is a second type of non-functional finger, the second finger type non-functional due to the strong signal tracking rake receiver is allocated finger next to the sidelobe signal path; rake receivers detect respective fingers have been assigned to the presence or absence of a second type of non-functional finger, comprising the steps of:

[0081] (i)耙型接收器依次判断各个已经分配的耙指的位置与邻近耙指的位置之间是否满足以下关系: [0081] (i) sequentially rake receiver that determines whether the following relationship is satisfied between the respective fingers have been assigned to a position adjacent the finger position:

[0082] I耙指位置一邻近耙指位置I < G — 0.125个码元; [0082] I position a finger adjacent the finger position I <G - 0.125 symbols;

[0083] 其中,G为副瓣信号的位置与相应的主瓣信号位置所相差的码元个数; [0083] wherein, G is the number of symbol element position sidelobe signal corresponding to the position of the main lobe signal phase difference;

[0084] (ii)如果不满足,则选取下一个已经分配的耙指,并重复上述步骤(i); [0084] (ii) if not, selecting the next one of the finger has been assigned, and repeat the above step (I);

[0085] (iii)如果满足,则判断该耙指所侦测到的信号能量是否小于该邻近耙指所侦测到的信号能量,且两者的差值不小于系统预设的第一能量门限差值Th2_l ; [0085] (iii) if so, it is determined whether the finger is detected by the signal energy is less than the energy of the signal detected by the adjacent fingers, and the difference between the two is not smaller than a first predetermined energy system threshold difference Th2_l;

[0086] (iv)如果否,选取下一个已经分配的耙指,并重复上述步骤⑴; [0086] (iv) if not, selecting an already allocated the next finger, and repeat the procedure ⑴;

[0087] (V)如果是,则判断该耙指所侦测到的信号能量是否大于该耙指的位置之前0.5个码元位置处的信号能量,且两者的差值不小于系统预设的第二能量门限差值Th2_2,或者该耙指所侦测到的信号能量是否大于该耙指的位置之后0.5个码元位置处的信号能量,且两者的差值不小于系统预设的第二能量门限差值Th2_2 ; [0087] (V) if so, determining whether the finger detected by the signal energy is greater than the energy of the signal at the position of 0.5 symbols before the position of the finger, and the difference between the two systems is not less than the preset a second energy threshold difference Th2_2, or whether the fingers to the detected signal energy is greater than the energy of the signal after the finger at a position 0.5 yards cell location, and the difference between the two systems is not less than the preset a second energy threshold difference Th2_2;

[0088] (vi)如果否,则选取下一个已经分配的耙指,并重复上述步骤⑴; [0088] (vi) If not, the next select an already allocated finger, and repeat the procedure ⑴;

[0089] (vii)如果是,则该耙指为第二类型无功能耙指; [0089] (vii) if so, the type of the finger is a second non-functional finger;

[0090] 其中,该无符码间干扰波形可以为升余弦波形,相应的滚边因子小于0.3,所述的第一能量门限差值Th2_l为13dB,所述的第二能量门限差值Th2_2为6dB ; [0090] wherein the waveform without intersymbol interference may be raised cosine waveform corresponding trim factor is less than 0.3, the difference between a first energy threshold Th2_l to 13dB, the second energy threshold of 6dB difference Th2_2 ;

[0091] (d)如果存在,则将该第二类型无功能耙指作为已经分配的无功能耙指记录下来; [0091] (d) if present, the second type of non-functional finger has been assigned as non-functional finger record;

[0092] (e)耙型接收器侦测各个已经分配的耙指中是否存在第三类型无功能耙指,该第三类型无功能耙指是由于多路径漂移使得两个路径能量恰巧完全合并成一个路径的情形下彼此因为个别的多路径时序追踪机制而被相互阻碍的已经分配的两个耙指中的一个;耙型接收器侦测各个已经分配的耙指中是否存在第三类型无功能耙指,包括以下步骤: [0092] (e) detecting the respective rake receivers already assigned fingers whether there is a third type of non-functional finger, the third finger is a type of non-functional full consolidation happens that the two drift due to multipath energy paths refers to the next in a case where a path timing as the individual multi-path tracking mechanism are two mutually hinder each other already assigned rake; rake receiver that detects whether or not there is a third type of each of the already assigned fingers finger function, comprising the steps of:

[0093] (i)耙型接收器从各个已经分配的耙指中任选两个耙指,判断该两个耙指之间是否相距至少一个码元,且该两个耙指之间是否存在比该两个耙指所侦测到的信号能量更强的能量峰值; [0093] (i) from the respective rake receivers have been assigned to any two fingers in the finger, it is determined whether the distance between the at least one symbol of the two fingers, and the presence or absence of the finger between the two peak ratio of the two fingers to the detected signal energy greater energy;

[0094] (ii)如果否,则从各个已经分配的耙指中重新选取两个耙指,并重复上述步骤(i); [0094] (ii) if not, from each of the already assigned fingers reselecting the two fingers, and repeating the above steps (I);

[0095] (iii)如果是,则该两个耙指为疑似第三类型无功能耙指,判断位置靠前的耙指之前0.5个码元位置处的信号能量是否小于该位置靠前的耙指所侦测到的信号能量,且两者的差值不小于系统预设的第三能量门限值Th3,同时位置靠后的耙指之后0.5个码元位置处的信号能量是否小于该位置靠后的耙指所侦测到的信号能量,且两者的差值不小于系统预设的第三能量门限值Th3 ; [0095] (iii) If so, then the two fingers of the third type non-functional pseudo finger, the finger front position determination whether the signal energy at 0.5 yards before cell location is less than the position of the front rake refers to a signal energy detected, and the difference between the two systems is not less than a preset third threshold value Th3 is energy, while after the rake by means of the signal energy at a position 0.5 symbols is smaller than the position of the position rearward finger detected by the signal energy, and the difference between the two systems is not less than a preset third threshold value Th3 is energy;

[0096] (iv)如果否,则从各个已经分配的耙指中重新选取两个耙指,并重复上述步骤 [0096] (iv) if not, from each of the already assigned fingers reselecting the two fingers, and repeat the above steps

(i); (I);

[0097] (V)如果是,则比较该两个耙指所侦测到的信号能量; [0097] (V) if so, comparing the two fingers to the detected energy signal;

[0098] (vi)将其中信号能量较弱的耙指作为第三类型无功能耙指; [0098] (vi) where the signal energy is weak fingers as the third type non-functional finger;

[0099] 其中,该无符码间干扰波形可以为升余弦波形,相应的滚边因子小于0.3,所述的第三能量门限差值Th3为所述的疑似第三类型无功能耙指中侦测到的信号能量中相对小的值; [0099] wherein the waveform without intersymbol interference may be raised cosine waveform corresponding trim factor is less than 0.3, the difference between a third energy threshold Th3, the suspected third finger type detected in nonfunctional signal energy to a relatively small value;

[0100] (f)如果存在,则将该第三类型无功能耙指作为已经分配的无功能耙指记录下来; [0100] (f) if present, the third type of non-functional finger has been assigned as non-functional finger record;

[0101] (3)所述的耙型接收器移除并回收该已经分配的无功能耙指。 [0101] (3) said rake receiver that has been assigned to remove and recover the non-functional finger.

[0102] 不仅如此,该移动通信系统中实现耙型接收器性能提升的耙指配置管理方法中的无符码间干扰波形也可以为根余弦(RRC)波形或者优化升余弦(Better Than RaisedCosine)波形。 [0102] Moreover, the mobile communication system implemented rake receiver performance lifted finger disposed between management method without codes interference waveform may be a waveform or optimized raised cosine (Better Than RaisedCosine) root cosine (RRC) waveform.

[0103] 同时,该移动通信系统可以为CDMA移动通信系统、WCDMA移动通信系统、CDMA2000移动通信系统或者TD - SCDMA移动通信系统。 [0103] Meanwhile, the mobile communication system may be a CDMA mobile communication system, WCDMA mobile communication system, CDMA2000 mobile communication system or a TD - SCDMA mobile communication system.

[0104] 在实际使用当中,本发明可以应用在以码分(code divis1n)为准则的标准中,像是宽带码分多址(3GPP标准的99/4/5/6/7系列和更新的系列)、分时一同步码分多址(TD - SCDMA)和码分多址(IS - 95/IS 一2000和更新的系列)等。 [0104] In actual use, the present invention may be applied to code division (code divis1n) in the standard criteria, such as Wideband CDMA (3GPP standard series and updates 99/4/5/6/7 series), a time division synchronous code division multiple access (TD - SCDMA) and Code division Multiple Access (iS - 95 / iS-2000, and newer series).

[0105] 本发明主要考虑到在影响系统效能的所有可能因素中,除了能够使用的耙指数目夕卜,移除不需要的耙指将是最重要的一个因素,移除耙指的问题在未来将会越来越重要,从而给出了有效的且可用硬件实现的解决方案。 [0105] The present invention in consideration of all the factors that may affect system performance, in addition to the rake Bu Xi index entry can be used to remove unwanted finger will be the most important factor, removing problems fingers the future will become increasingly important to give a solution effective and available hardware. 在解决移除耙指的问题后,从而获得了大幅度的系统效能改善。 After removing the finger to solve the problem, to obtain a significant performance improvement system.

[0106]由于可使用耙指数量的限制,在现有技术中比较少着墨在讨论移除耙指的问题上。 [0106] Since the number of fingers may be used to limit, in the prior art discussed in the less inked fingers removal problem. 随着可使用的耙指资源的增加,移除耙指在限制耙型接收器效能的课题上逐渐扮演着一个很重要的角色。 With the increase of available rake fingers of resources, gradually removing finger plays a very important role in limiting the effectiveness of the rake receiver that issue. 因此本发明提出一些有用的判决规则解决移除耙指的问题。 Thus, the present invention provides some useful decision rules to solve the problem of removing the finger. 在解决移除耙指所遭遇到的问题后,预期系统性能将有明显的改善。 After removing finger to solve the problem encountered, expected system performance will be significantly improved. 此外回收的耙指将使接收机有最大的耙指重分配的资源并且只用必要的耙指还可节省软硬件处理功耗。 Also recovered finger receiver will have the greatest resource reallocation of the finger and also saves only the necessary software and hardware processing power with fingers.

[0107] 本发明的方法是基于利用无符码干扰(IS1- free)波形的特性,从而能够判定哪里有要被移除的耙指和这是哪一类要被移除的耙指(在本发明中称之为”无功能耙指”)。 [0107] The method of the present invention is based on the waveform characteristic codes without using interference (IS1- free), whereby there can be determined where the finger to be removed and this is what kind of finger to be removed (in in the present invention, it referred to as "non-functional fingers"). 无符码干扰波形是一种满足奈奎斯特符号间干扰准则的波形。 No codes interference waveform is a waveform of the Nyquist criterion is satisfied symbol interference. 在通信中,当奈奎斯特符号间干扰准则被应用于基频滤波器中时,本发明可以把输入符号串当成受到权重的脉冲(Dirac delta)去模拟。 In communication, when the inter-symbol interference Nyquist criterion is applied to the baseband filter, the present invention can be input symbol string as the weight impulse (Dirac delta) to simulate. 当基频滤波器满足奈奎斯特符号间干扰准则时,符号可以在一个有缓和响应的有限频带里传送而不会受到符号间干扰。 When the baseband filter to meet inter-symbol interference Nyquist criterion, symbol may have a limited frequency band in response to ease without being transmitted in a inter-symbol interference. 这类的基频滤波器有升余弦(RaisedCosine)滤波器(符号串通过升余弦滤波器后形成升余弦波形)或是理想上的sine滤波器。 Such a fundamental frequency with a raised cosine filter (RaisedCosine) filter (string of symbols formed by raised cosine waveform raised cosine filter) or over the sine filter. 图五即为升余弦波形。 Figure V is the raised cosine waveform. 在图五中,有连续三个升余弦波形,Rl〜R3,用来显示出传送符号在取样时的零符号间干扰性质。 In FIG. Fifth, there are three successive raised cosine waveform, Rl~R3, to exhibit properties of interference between transmitted symbols during sampling of the null symbol. 在此一个升余弦波形对应一个传送的信号。 Here a raised cosine waveform corresponding to a transmitted signal. 在取样时间=O码元时,中间的波形(R2)是在它最大值时被取样,而其它两个波形(Rl和R3)在这时间点的取样值的和为0,因此Rl和R3没有贡献符号间干扰给R2。 The symbol sampling time = O, the intermediate waveform (R2) is a maximum value when it is sampled at the other two waveforms (Rl and R3) at this time point and the sample value is 0, Rl and R3 are thus no inter-symbol interference contribution to R2. 以宽带码分多址标准为例,采用root — raised cosine (RRC)滤波器传送输出信号,接收机采用相同的RRC匹配滤波器,合并传送段及接收端滤波器即为RC波型,在某些条件下可达成无符码干扰的效果。 In WCDMA standards, for example, using the root - raised cosine (RRC) filter transmits the output signal of the receiver matched filter using the same RRC, combined delivery and the receiver section RC filter is the wave, in a codes may be achieved without interference effects under these conditions.

[0108] 在本发明中有三个特别要声明的: [0108] There are three particular declared in the present invention:

[0109] (I)本发明利用无符号间干扰波形的共通特性侦测无功能耙指,因此本发明的判决法则可适用于任何无符码间干扰波形(ISI — free pulse)。 [0109] (I) of the present invention without using the inter-symbol interference waveform common feature detecting non-functional finger, so decision rule is applicable to the present invention without any inter-operator interference waveform (ISI - free pulse). 因此本发明包括所有使用的无符码间干扰波形的任何标准/系统里。 Accordingly the present invention include any of the standard / non-system in all codes used in the interfering wave. 实际应用上,无符码间干扰波形像是RRC波形,升余弦(Raised Cosine)波形和Better Than Raised Cosine波形(具体请参阅NCBeaulieu, CCTan, and M.0.DamenA 'better than> Nyquist pulse,,IEEE Commun.Lett.,vol.5,pp.367-368,Sept.2001.)。 Practice, the inter-symbol interference waveform unsigned waveform such as RRC, raised cosine (Raised Cosine) waveform and Better Than Raised Cosine waveform (see particularly NCBeaulieu, CCTan, and M.0.DamenA 'better than> Nyquist pulse ,, IEEE Commun.Lett., vol.5, pp.367-368, Sept.2001.). 换句话说,本发明包括所有传送器/接收器滤波器使用满足奈奎斯特符号间干扰准则的系统。 In other words, the present invention includes all transmitter / receiver system of interference filters satisfying the Nyquist criterion between symbols.

[0110](注:CDMA2000 使用0.07 滚边因子(roll — off factor) RRC 滤波器(具体请参阅:3gpp2C.S0002-E, “Physcial Layer Standard for cdma2000Spread SpectrumSystems”,V1.0),TD — SCDMA及WCDMA则采用0.22滚边因子的RRC滤波器。)具体请参阅以下文献: [0110] (Note: CDMA2000 Use 0.07 factor piping (roll - off factor) RRC filter (see specifically: 3gpp2C.S0002-E, "Physcial Layer Standard for cdma2000Spread SpectrumSystems", V1.0), TD - SCDMA and WCDMA . trim factor 0.22 is adopted RRC filter) specifically refer to the following documents:

[0111] # 3gpp TS25.105, aBase Stat1n (BS) rad1 transmiss1n andrecept1n(TDD) ”,V6.8.0,2009-05 [0111] # 3gpp TS25.105, aBase Stat1n (BS) rad1 transmiss1n andrecept1n (TDD) ", V6.8.0,2009-05

[0112] # 3gpp TS25.104, aBase Stat1n (BS) rad1 transmiss1n andrecept1n(FDD) ”,V6.8.0,2009-06 [0112] # 3gpp TS25.104, aBase Stat1n (BS) rad1 transmiss1n andrecept1n (FDD) ", V6.8.0,2009-06

[0113] (2)再判定完无功能耙指后,任何的耙指移除机制都可以被使用,所以本发明包括所有可能的耙指移除机制。 [0113] (2) After completion of re-determined nonfunctional fingers, any fingers removal mechanisms can be used, the present invention includes all possible fingers removal mechanism. 无功能耙指判别到移除最快可以在一个导频符号(Pilotsymbol)时间内完成。 No function to remove the fastest finger determination can be done in a pilot symbol (Pilotsymbol) time.

[0114] (3)本发明并没有对耙型接收器预设任何条件限制,所以可以应用在任何以耙型接收器为基础的通信环境接收器。 [0114] (3) The present invention is not restricted to any preconditions rake receiver that can be applied to any basic Rake receiver is a communications environment receiver.

[0115] 本发明中,在控制器分配耙指后,控制模块尚须提供耙指能量结合权重,耙指位置移动位置,耙指合并保护,分配或回收耙指。 [0115] In the present invention, the controller allocates the fingers, yet the control module provides energy finger binding weight, finger position movement position, the finger merge protection, distribution or recycling fingers. 理论上耙指会被分配给多路径里含有比较强信号成分的路径以搜集出信道路径中传送信号的能量(假如耙指够的话,基本上一个信号路径会被分配一个耙指)。 Theoretically finger is assigned to a multipath path contains a relatively strong signal component to collect the energy of the transmission signal path of a channel (if fingers enough, basically, a signal path is assigned a finger). 但是由于噪声,多路径飘移和衰减的缘故,耙指分配或是多路径时序追踪机制有可能随机的分配耙指到错误的位置(在此称这种耙指为无功能耙指)。 However, due to noise, drift and multipath fading because of finger assignment or multi-path timing tracking mechanisms may randomly assigned to the wrong finger position (here call this finger is non-functional finger). 这些不该分配耙指出现后,将会造成整体系统效能的损失。 These should not be assigned finger appears, will result in the loss of overall system performance. 本发明将所有无功能耙指分成三类去讨论: The present invention features all none fingers to discuss divided into three categories:

[0116].type I无功能把指--第一类型无功能I巴指 [0116] .type I nonfunctional refers to - a first non-functional type I bar means

[0117].type II无功能把指--第二类型无功能I巴指 [0117] .type II refers to non-functional - a second non-functional type I bar means

[0118].type III无功能把指--第三类型无功能I巴指 [0118] .type III nonfunctional refers to - a third type I non-functional finger bar

[0119] 其中,type I无功能耙指是接收机因错误的通道能量侦测而分配耙指去接收并追踪单纯因为噪声所形成的假信号路径。 [0119] wherein, type I is a non-functional finger receiver channel energy detection errors due fingers assigned to track and false signal receiving path formed simply because noise.

[0120] type II无功能耙指是接收机分配耙指去追踪一个有很强信号路径旁的副瓣信号(side - lobe signal),因为系统侦测到在副瓣的位置上有很强的部分信号出现。 [0120] type II are non-functional finger receiver fingers assigned to track a sidelobe signal path next to a strong signal (side - lobe signal), since the system has detected a strong position on the sidelobes part of the signal occurs.

[0121] type III无功能耙指是指有两个该被分配的耙指,由于多路径漂移会两个路径能量恰巧完全合并成一个路径的缘故,导致这两根耙指都往同一根路径前进。 [0121] type III refers to a non-functional finger assigned two of the fingers, the drift due to multipath energy will happen exactly two paths merge into one path's sake, which leads to the two fingers have a same path go ahead. 但他们彼此会因为个别的多路径时序追踪机制而被对方所阻碍。 But they each other because of the individual multi-path timing tracking mechanism is hindered by the other party. 以上三类无功能耙指是无关且独立的问题需由接收机耙指控制器进行应付。 Three or more non-functional and the finger is irrelevant issues to be independent from the receiver to cope with the finger controller.

[0122] 由于耙指对整个系统的影响和耙指所能侦测到信号振幅大小成正比,因此type I无功能耙指对整个系统造成的效果非常小。 [0122] Since the fingers impact on the overall system and can detect the finger signal amplitude proportional to the size, type I and therefore no effect on the function of the finger is very small due to the overall system. 假使想要判定type I无功能耙指在何处的话,有个非常简单的方法可以达成这个目的:只要设立一个绝对的门限值(threshold)去判定即可。 If you want to determine type I nonfunctional fingers where, then there is a very simple way of doing this: as long as the establishment of an absolute threshold (threshold) is determined to go. 假如耙指所侦测到信号能量比门限值来的小的话,那本发明即判定这个耙指为typeI无功能I巴指。 If the finger is detected signal energy smaller than the threshold values, then the present invention has determined that the finger is no function I typeI bar means.

[0123] 假设type I无功能把指导频信道能量比全部接收信号(1 = KdBm)小为AdB且导频信号能量标准差为BdB,则门限值应设置于Thl = K — A — 2BdBm。 [0123] Suppose type I no function to guide the pilot channel energy ratio of all the received signals (1 = KdBm) small as AdB and a pilot signal energy of the standard deviation of BdB, the threshold value should be set to a Thl = K - 2BdBm - A. 在假设接收信号为高斯分布的情况下,本发明有97%的机会能除去(避免)type I无功能把指。 In the case of assuming that the received signal is a Gaussian distribution, the present invention has a 97% chance of removal (avoid) type I refers to non-functional. 在路径搜寻器方面避免分配耙指到能量小于K 一A — 4dBm的路径上,这样能保证3%左右的误判的机率,一般而言A = 30dB,B = ldB。 Assign fingers to avoid energy is less than a K A path searcher aspect - the probability of the path 4dBm, this will ensure that misjudgment about 3%, generally A = 30dB, B = ldB. 判定type I无功能fE指在何处的算法如下所示: No decision algorithm function fE refers to type I where as follows:

[0124] If (耙指能量< Thl) [0124] If (the finger energy <Thl)

[0125] {此把指为type I无功能把指。 [0125] {This refers to the type I refers to non-functional. } }

[0126] 移除所有type I无功能I巴指 [0126] Remove all type I nonfunctional I refer to Pakistan

[0127] 请参阅图4a所示,其中表示某个type II无功能耙指的情境,耙指I被分配到RC波形的副瓣上,本发明必须要移除这个耙指,由图可知副瓣位置约距离主瓣(main — lobe)G个码元并且比主瓣小CdB (G跟C与选择的无符码波形及参数有关)。 [0127] Please refer to FIG. 4a, which represents a type II non-functional finger context, the finger is assigned to I sidelobes RC waveform, the present invention is necessary to remove the finger, the sub apparent from FIG. valve position of the main lobe from about (main - lobe) G symbols and (G with C and no codes and parameters related to the selected waveform) smaller than the main lobe CdB. type II无功能耙指通常发生于较强的路径,因此本发明可以把门限值设为CdB小于主瓣能量,值得一提的是type I无功能把指侦测机制并无法应用于type II无功能把指。 No type II usually occurs in the finger functional strong path, the present invention can CdB door limit value smaller than the main lobe energy, it is worth mentioning that the non-functional type I mechanism and the detection means can not be applied without type II It refers to the function. 此外还需检查两个过零点如图4a的zl及z2分别距离旁瓣约为0.5个码元,所以总结来说有两个门限值:Th2_l=CdB和Th2_2 = DdBo下列算法可用来应付type II无功能f巴指: Further examination need two zero crossings FIG zl 4a and z2 are each from about 0.5 symbols sidelobe, so there are two threshold conclusion: Th2_l = CdB and Th2_2 = DdBo following algorithm can be used to cope with the type no function f II bar means:

[0128] If (下列四个条件同时成立) [0128] If (the following four conditions are true)

[0129] {此把指为type II无功能把指} [0129] {refer to this function as the means no type II}

[0130] 移除所有无功能耙指 [0130] Remove all non-functional finger

[0131] 条件一:I耙指位置一邻近耙指位置I < G — 0.125码元; [0131] Condition a: I position a finger adjacent the finger position I <G - 0.125 symbols;

[0132] 条件二:符合条件一的耙指Th2_ldB小于邻近耙指; [0132] Condition II: Eligible Th2_ldB less than one finger adjacent the finger;

[0133] 条件三:符合条件一、二的耙指比前0.5码元位置的能量大Th2_2dB ; [0133] Three conditions: a rake qualified, refers to two larger than the energy of the symbol position with 0.5 Th2_2dB;

[0134] 条件四:符合条件一、二的耙指比后0.5码元位置的能量大Th2_2dB。 [0134] Condition IV: a qualified, two fingers after 0.5 yards element than the position of the large energy Th2_2dB.

[0135] 一般而言,对于一个具有滚边因子0.22的RC波型,C和D应分别设为13dB及6dB。 [0135] In general, for a trim factor of 0.22 with an RC waveform, C and D should be set to 13dB and 6dB, respectively. 根据仿真结果,Th2_l = 6dB可得到好的侦测性能并有97%以上的机会侦测到typell耙指及3%的误判率,根据仿真结果,如果输入信号的信噪比为10dB,一个typell杷指将会降低耙型接收器输出信噪比达1.2dB。 According to the simulation results, Th2_l = 6dB better detection performance can be obtained and more than 97% chance, and the finger detected typell false positive rate of 3%, based on the simulation result, if the input signal to noise ratio is 10dB, a typell loquat means will reduce the rake receiver output signal to noise ratio of 1.2dB.

[0136] 再请参阅图4b所示,其中表示type III无功能耙指,两个耙指争逐同一个极大能量点nzl但两者皆因耙指重迭保护机制无法前进,(由前面描述已知耙指重迭保护机制是必要的)。 [0136] Referring again to FIG. 4b, where no type III represents a functional finger, two finger chasing the same maximum power point nzl but both because the fingers can not move forward overlap protection mechanism, (from the front description of known finger overlap is necessary protection mechanisms). 要应付type III f巴指,本发明希望: To cope with the type III f bar means, the present invention is intended:

[0137] (I)如果两个耙指争逐同一个能量极大点,其中一个必须被移除。 [0137] (I) if two fingers scramble point with a maximum energy, one of which must be removed. 存在的耙指会在很短的时间内的锁上且成为合法的耙指。 The existence of fingers will be locked in a very short period of time and become a legitimate finger.

[0138] (2)如果两个耙指各自指向两个信号路径相距一个码元,本发明会希望两个耙指续存。 [0138] (2) If the two fingers away from each point to two signal paths one symbol, the present invention will want to renew the two fingers. 此种情况两个耙指会因为信号路径的变化有时会靠近有时会拉远,如图4c及4d所不O This case two fingers because of the variation of the signal path is sometimes close sometimes remote, 4c and 4d are not O in FIG.

[0139] 如果接收机错判前者(I)为后者(2)或者误判后者为前者会发生和种状况呢? [0139] If the receiver misjudged the former (I) for the latter (2) or miscarriage of justice occurs and the latter for the former kind of situation? 如果(I)被判断成(2),type III耙指续存反之会回收正常的耙指,所以后者被判断成前者是应该尽量避免的。 If (I) is determined as (2), type III finger surviving Conversely recycles normal finger, the latter is judged as the former should be avoided. 利用判断前后0.5码元的能量且设定门限值为Th3 = EdB,可以得到下列的typeIII把指侦测判断式: Analyzing element before and after using 0.5 yards energy threshold is set and Th3 = EdB, can be obtained following typeIII detection means determines the formula:

[0140] If ((任两个耙指相距一个码元)且(两个耙指中间有个能量更强的能量峰值)) [0140] If ((two fingers away from any one symbol) and the (middle two fingers of energy more energy peaks a))

[0141] {两个耙指被列入疑似typeIII耙指之列} [0141] {finger are two fingers included in the list of suspected typeIII}

[0142] If (两个耙指为疑似typeIII并争逐同一个峰值) [0142] If (as suspected typeIII two fingers and chasing the same peak)

[0143] { [0143] {

[0144] If (半个码元前的能量<耙指能量一Th3dB) [0144] If (half of the symbol energy before <a finger energy Th3dB)

[0145] {这是个领先的(左手边)的type III耙指} [0145] {This is leading (left-hand side) of the finger type III}

[0146] If (半个码元后的能量<耙指能量一Th3dB) [0146] If (half of the symbol energy after <a finger energy Th3dB)

[0147] {这是个落后的(右手边)的type III耙指} [0147] {This is a backward (right hand side) of the finger type III}

[0148] } [0148]}

[0149] 移除两个type III I巴指中能量较弱的。 [0149] removal of two type III I bar energy weaker fingers.

[0150] 在本发明中所提出的A到E及G参数是针对0.22滚边因子的RC波型最佳化,一般而言可适用于小于0.3滚边因子的RC波型。 [0150] A proposed in the present invention and E to G parameter is 0.22 for the RC-wave trim optimization factor, generally less than 0.3 may be applied to an RC waveform trim factor. 再者,类似的作法可以应用在任何其它的无符码间干扰波型上。 Moreover, a similar approach can be applied between any other codes without interfering wave.

[0151] 利用文中所提出的算法,本发明接下来提供一些具体实施例验证是否有效。 [0151] using the algorithm proposed in this paper, the present invention provides the following embodiments some embodiments verify valid.

[0152] 在图4a到4e,其中选择0.22滚边因子的RC波型且没有加入噪声。 [0152] In Figures 4a to 4e, wherein RC is selected waveform factor 0.22 piping without added noise. 图4a中,耙指2被分配到t = 0,码元两边各有一个过零点nzl及nz2 ( — 0.5及+0.5码元),把指I被分配到t =一1.5码元上并且有两个过零点zl及z2分别位于t =一2及一I码元。 In Figure 4a, finger 2 is assigned to t = 0, the symbols on each side of a zero crossing nzl and nz2 (- 0.5 and +0.5 symbol), is allocated to the means I to 1.5 t = the symbol and has two zero crossings zl and z2 are respectively located, and a t = a 2 I symbol. 利用提出的算法本发明可以判断此为type II无功能耙指:1)耙指I及耙指2相距1.5个码元且耙指I的两边有过零点zl及z2 ;耙指I的能量比耙指2小14dB且耙指I能量比zl及z2能量大6dB。 Algorithm uses proposed in the present invention may be determined here, type II non-functional finger: 1) the finger I and finger 2 at least 1.5 symbols and the finger I of both sides of the zero crossing zl and Z2; fingers I energy than finger 2 and the finger I 14dB less energy larger than energy zl and z2 6dB. 以上所有特征皆指向type II,因此接收机可以立即判断并移除此type II无功能I巴指。 All the above features are directed type II, and thus the receiver may immediately judge no function to remove this type II I bar means.

[0153] 在图4b里,有两个耙指(耙指I和耙指2)分别在时间=一0.5和0.5码元处。 [0153] In Figure 4b, there are two finger (finger I and finger 2), respectively, at a time = 0.5 and 0.5 at symbols. 对于耙指I而言,有一个邻近的过零点(zl)在时间=一I码元和一个邻近非破零的点(nzl)在时间=O码元处。 I For purposes of the finger, have a near zero crossings (ZL) at time I = a neighboring symbols and a non-zero break point (NZL) at time = O at symbols. 对于耙指2而言,有一个邻近的过零点(z2)在时间=I码元和一个邻近非破零的点(nzl)在时间=O码元处。 For purposes of the finger 2, it has a near zero crossings (Z2) = I at time adjacent symbols and a non-zero break point (NZL) at time = O at symbols. 遵照上述判定不该分配把指在何处的算法,把指I和耙指2被判定为type III无功能耙指。 Should the determination in accordance with the assignment algorithm where the finger, the finger I and finger 2 is determined to be non-functional finger type III. 更仔细的说明如下,耙指I和耙指2是相距I码元;在把指I和把指2间有一个能量尖峰值比起这两个把指的能量还要大;把指I (zl,nzl)和耙指2(z2,nzl)皆各有一个邻近破零和一个邻近非破零的点。 More closely described below, the finger I and finger 2 are separated by the symbol I; I and the finger in the finger 2 has a peak energy value than the mean energy of these two larger; refers to I ( zl, nzl) and finger 2 (z2, nzl) are each adjacent to a break near zero and a non-zero point of break. 因为这些条件和上述判定不该分配把指在何处算法中的判定type III无功能把指条件吻合,因此把指I和把指2会被判定为type III无功能把指。 Because of these conditions and the determination means determines not to assign the non-functional type III where the algorithm refers to conditions consistent with the above, and therefore the means I and the means 2 will be determined as a function of the type III without fingers. 在type III无功能把指被判定后,稍后把指I或把指2其中一个耙指会被移除。 After the non-functional type III, refers to the determination, the later refers to refers to I or 2, wherein a finger is removed.

[0154] 在图4c〜4e中,本发明举一个多路径环境由两根信号路径所组成的情形。 [0154] In FIG 4c~4e, the present invention is held by the case of a multi-path environment composed of two signal paths. 图4c和图4d之间的差异只是在于传送信号符号的不同。 The difference between 4c and 4d different only in that the signals transmitted symbols. 图4c和图4e之间的差异则是被分配的耙指数目不同。 The difference between 4c and 4e are different index allocated rake head. 图4c和图4d可以用来跟图4b做比较以强化本发明判定type III不该分配耙指的论点。 4c and 4d of Figure 4b can be used for comparison with the present invention is determined to strengthen type III fingers assigned should argument. 在这三个图中,蓝色虚线的图形分别表示两根信号路径的信号;蓝色实线的图形代表两根信号路径结合而成的信号波形。 In these three figures, dotted blue pattern signal represent two signal paths; signal waveform graph represents two signal paths of the solid blue line bonded.

[0155] 在图4c里,有两个耙指(耙指I和耙指2)分别在时间=一I和0码元处。 [0155] In FIG. 4c, there are two finger (finger I and finger 2), respectively, at time = a, and 0 at symbols I. 对于耙指I而言,有两个邻近的非过零点(nzl和nz2)分别在时间=一1.5码元和一0.5码元处。 For finger I, there are two adjacent non-zero-crossing (and Nz2 NZL) respectively at time = -1.5 and -0.5 symbols at a symbol. 对于耙指2而言,也有两个邻近的非过零点(nz2和nz3)分别在时间=一0.5码元和0.5码元处。 For purposes of the finger 2, there are two non-adjacent zero crossings (Nz2 and NZ3), respectively, at time = -0.5 and 0.5 symbols at a symbol. 这跟本发明算法中判定type III无功能把指条件不吻合(两个把指皆各需有一个邻近破零和一个邻近非破零的点),因此耙指I和耙指2不会被判定为type III无功能牵巴指。 This is determined with the algorithm of the present invention, the non-functional type III without stapling means (the means are two each of the need for a break near zero and a zero point adjacent the non-break), so the finger I and finger 2 will not be determined to be non-functional type III led Palestinian fingers.

[0156] 在图4d里,算法中判定type III无功能f巴指其中之一条件(两个把指皆各需有一个邻近破零和一个邻近非破零的点)吻合,然而在这两个耙指间并无能量尖峰值比起这两个牵巴指的能量还要大,因此把指I和把指2不会被判定为type III无功能把指。 [0156] In Figure 4d, the algorithm determines that no type III function f bar means wherein one of the conditions (the two means are each required to have a near zero and a break point adjacent the non-zero-breaking) coincide, but in both rake fingers is not a peak energy values ​​than two retractor bar means energy larger, and therefore the means I and the means 2 will not be determined to refer to non-type III function. 事实上,牵巴指I和IE指2也确实不是type III无功能f巴指 In fact, the retractor bar means I and IE does not also refer to two non-functional type III bar means f

[0157] 在图4e里,有三个耙指(耙指1,耙指2,耙指3)分别位于时间=一1.5、一0.5、0.5码元处。 [0157] In FIG. 4e, there are three fingers (finger 1, finger 2, finger 3) are located in a time = 1.5, 0.5, 0.5 a at symbols. 对于耙指I而言,有一个邻近破零的点(zl)在时间=一2码元和一个邻近非破零的点(nzl)在时间=一I码元处。 I For purposes of the finger, there is a break near the zero point (ZL) = time and a second symbol of a neighboring non-zero break point (NZL) = a time at symbols I. 对于耙指3而言,有一个邻近破零的点(z2)在时间=I码元和一个邻近非破零的点(nz2)在时间=O码元处。 For the purposes of the finger 3, there is a break near the zero point (Z2) = I at time adjacent symbols and a non-zero break point (Nz2) at time = O at symbols. 对于耙指2而言,有两个邻近非破零的点(nzl和nz2)分别在时间=一1、0码元处。 For finger 2, there are two adjacent non-zero break point (NZL and Nz2) respectively at a time = 0 at symbols. 对于耙指I和耙指3而言,因为两个耙指间的条件和算法中的判定type III无功能耙指条件吻合,因此耙指I和耙指3会被判定为type III无功能把指。 For the finger I and finger 3, it is determined as non-functional condition and type III algorithms two fingers in rake finger condition is met, so the finger I and finger 3 are determined as a function of the type III None finger. 当判定完type III无功能把指后,本发明可以使用任何可能的耙指移除机制去移除掉耙指I或是耙指3其中一个。 After completion of the non-functional type III determination means, the present invention may be used to remove any possible mechanism to remove the finger away finger I or 3, wherein a finger.

[0158] 关于与本发明相关的其它参考文献,还请参阅以下美国专利文献: [0158] For other references related to the present invention, also see the following U.S. Patent documents:

[0159] US7184462,Method and apparatus for configuring a Rake receiver。 [0159] US7184462, Method and apparatus for configuring a Rake receiver.

[0160] 采用本发明方法的有益效果如下: [0160] The method of the present invention, the following advantageous effects:

[0161] (I)本发明可藉由移除无功能耙指来获得系统效能的改善,特别是在高信噪比或多重路径衰减机制的严苛通信环境中。 [0161] (I) of the present invention by removing non-functional finger to improved system performance, especially at high signal attenuation or multi-path communication mechanism harsh environments.

[0162] (2)此外本发明也可以因而节省耙指的数目。 [0162] (2) In the present invention thus may save the number of fingers. 节省下来的耙指可以被接收器再次使用,得到更进一步的系统效能改善。 Saved finger receivers may be used again to give further improve system performance.

[0163] (3)少了多余的无功能耙指,可避免多余的软硬件处理功耗。 [0163] (3) less unwanted non-functional finger, can avoid redundant hardware processing power.

[0164] 采用了该发明的移动通信系统中耙型接收器性能提升的耙指配置管理方法,由于其中利用一些有用的判决规则进行无功能耙指的判别和移除、回收,从而系统性能得到了明显的改善,特别是在高信噪比或多重路径衰减机制的严苛通信环境中更加显示出了优势;同时,也可以因而节省宝贵的耙指的数目,节省下来的耙指可以被接收器再次使用,得到更进一步的系统效能改善;而且由于减少了多余的无功能耙指,可避免多余的软硬件处理功耗,从而最大限度的利用了系统资源,工作性能稳定可靠、适用范围较为广泛。 [0164] The mobile communication system of this invention to enhance the performance of rake receiver fingers of the configuration management methods, which utilize some useful since the decision rule for determination of non-functional finger and removal, recovery, to obtain system performance significantly improved, especially in the more exhibits the advantages of high signal to noise ratio or multipath attenuation mechanism harsh communication environment; the same time, thus saving valuable may be the number of fingers, the fingers saved may be received again, yielding further improve system performance; and by reducing the excess non-functional finger, to avoid unnecessary processing power consumption of hardware and software, to maximize the use of system resources, stable and reliable performance, more scope widely.

[0165] 在此说明书中,本发明已参照其特定的实施例作了描述。 [0165] In this specification, the present invention has been described with reference to specific embodiments thereof. 但是,很显然仍可以作出各种修改和变换而不背离本发明的精神和范围。 However, it is still apparent that various modifications and variations can be made without departing from the spirit and scope of the invention. 因此,说明书和附图应被认为是说明性的而非限制性的。 Accordingly, the specification and drawings are to be regarded as illustrative rather than restrictive.

Claims (10)

  1. 1.一种移动通信系统中实现耙型接收器性能提升的耙指配置管理方法,其特征在于,所述的方法包括以下步骤: (1)耙型接收器接收无线通信信号,并基于该无线通信信号得到相应的无符码间干扰波形; (2)根据所述的无符码间干扰波形以及各个已经分配的耙指进行无功能耙指的侦测处理,并得到已经分配的无功能耙指; 进行无功能耙指的侦测处理,包括以下步骤: (a)耙型接收器侦测各个已经分配的耙指中是否存在第一类型无功能耙指; 侦测第一类型无功能耙指,包括以下步骤: (21)耙型接收器依次判断各个已经分配的耙指所侦测到的信号能量是否小于系统预设的第一能量门限值Thl ; (22)如果是,则该耙指为第一类型无功能耙指; (b)如果存在,则将该第一类型无功能耙指作为已经分配的无功能耙指记录下来; (c)耙型接收器侦测各个已经分配的耙指中是否 A mobile communication system rake implement a rake receiver that refers to the configuration of the performance management method, wherein said method comprises the steps of: (1) rake receiver for receiving a wireless communication signal, and based on the radio to give the corresponding communication signal without inter symbol interference waveforms; (2) non-functional finger detection processing in accordance with the inter-symbol interference unsigned waveforms and each rake finger has been assigned, and give no function has been assigned to the rake It refers to; be non-functional finger detection process, comprising the steps of: (a) detecting the respective rake receivers already assigned fingers in the presence or absence of a first type non-functional finger; detecting a first type function without rake means, comprising the steps of: (21) sequentially rake receiver that determines whether each of the fingers have been assigned to the detected signal energy is less than a first predetermined system energy threshold Thl; (22) If so, then the a first finger type non-functional finger; (b) if present, the type of the first non-functional finger has been assigned as a non-functional finger record; (c) detecting the respective rake receivers have been assigned whether the finger 在第二类型无功能耙指; 侦测第二类型无功能耙指,包括以下步骤: (31)耙型接收器依次判断各个已经分配的耙指的位置与邻近耙指的位置之间是否满足以下关系: 耙指位置一邻近耙指位置I < G — 0.125个码元; 其中,G为副瓣信号的位置与相应的主瓣信号位置所相差的码元个数; (32)如果不满足,则选取下一个已经分配的耙指,并重复上述步骤(31); (33)如果满足,则判断该耙指所侦测到的信号能量是否小于该邻近耙指所侦测到的信号能量,且两者的差值不小于系统预设的第一能量门限差值Th2_l ; (34)如果否,选取下一个已经分配的耙指,并重复上述步骤(31); (35)如果是,则判断该耙指所侦测到的信号能量是否大于该耙指的位置之前0.5个码元位置处的信号能量,且两者的差值不小于系统预设的第二能量门限差值Th2_2,或者该耙指所侦测到的信号能量是否大于 In the second type of non-functional finger; detecting a second type of non-functional finger, comprising the steps of: (31) rake receiver is successively judged whether the individual has been allocated between the finger and the adjacent finger position location the following relationship: a finger position adjacent the finger position I <G - 0.125 symbols; wherein, G is the number of symbol element position sidelobe signal corresponding to the position of the main lobe signal phase difference; (32) If the condition , the next select an already allocated finger, and repeating the above steps (31); (33), if satisfied, it is determined whether the finger is detected by the signal energy is less than the signal energy detected by the proximity to the finger and the difference between the two systems is not less than the first energy threshold preset tolerance values ​​Th2_l; (34) if no, select an already allocated the next finger, and repeating the above steps (31); (35) if it is, it is determined whether the finger detected by the signal energy is greater than the energy of the signal at the position of 0.5 symbols before the position of the finger, and the difference between the two systems is not less than a second predetermined energy threshold difference Th2_2, Alternatively the fingers to the detected signal energy is greater than 该耙指的位置之后0.5个码元位置处的信号能量,且两者的差值不小于系统预设的第二能量门限差值Th2_2 ; (36)如果否,则选取下一个已经分配的耙指,并重复上述步骤(31); (37)如果是,则该耙指为第二类型无功能耙指; (d)如果存在,则将该第二类型无功能耙指作为已经分配的无功能耙指记录下来; (e)耙型接收器侦测各个已经分配的耙指中是否存在第三类型无功能耙指; 侦测第三类型无功能耙指,包括以下步骤: (41)耙型接收器从各个已经分配的耙指中任选两个耙指,判断该两个耙指之间是否相距至少一个码元,且该两个耙指之间是否存在比该两个耙指所侦测到的信号能量更强的能量峰值; (42)如果否,则从各个已经分配的耙指中重新选取两个耙指,并重复上述步骤(41); (43)如果是,则该两个耙指为疑似第三类型无功能耙指,判断位置靠前的耙指之前0.5个 After the signal energy at the finger position 0.5 yards cell location, and the difference between the two systems is not less than a second predetermined energy threshold difference Th2_2; lower (36) if no, select an already allocated harrow It means, and repeating the above steps (31); (37) If so, the finger is a second non-functional finger type; (d) if present, the second type of non-functional finger has been assigned as a non- function fingers recorded; (e) detecting the respective rake receivers already assigned fingers whether there is a third type of non-functional finger; the third type detect non-functional finger, comprising the steps of: (41) harrow rake type receiver from the already assigned fingers each optionally two fingers, it is determined whether the distance between the at least one symbol of the two fingers, and the presence or absence of two fingers between the ratio of the two rake means more energy peak detected signal energy; (42) If not, from each of the already assigned fingers reselecting the two fingers, and repeating the above steps (41); (43) If so, then the before the finger is suspected two third type non-functional finger, the finger front position determination 0.5 码元位置处的信号能量是否小于该位置靠前的耙指所侦测到的信号能量,且两者的差值不小于系统预设的第三能量门限值Th3,同时位置靠后的耙指之后0.5个码元位置处的信号能量是否小于该位置靠后的耙指所侦测到的信号能量,且两者的差值不小于系统预设的第三能量门限值Th3; (44)如果否,则从各个已经分配的耙指中重新选取两个耙指,并重复上述步骤(41); (45)如果是,则比较该两个耙指所侦测到的信号能量; (46)将其中信号能量较弱的耙指作为第三类型无功能耙指; (f)如果存在,则将该第三类型无功能耙指作为已经分配的无功能耙指记录下来; (3)所述的耙型接收器移除并回收该已经分配的无功能耙指。 If the signal energy is smaller than at a symbol position signal energy detected by the finger position to the front, and the difference between the two systems is not less than the preset third threshold value Th3 is the energy, while the rear position against the rake after 0.5 refers to a signal energy at symbol positions after the signal energy is smaller than the position of the finger is detected by, and the difference between the two systems is not less than a third predetermined energy threshold value Th3; (44 ) If not, from each of the already assigned fingers reselecting the two fingers, and repeating the above steps (41); (45) if so, comparing the two fingers to the detected signal energy; ( 46) wherein the weak signal energy as a third finger type non-functional finger; (f) if present, the third type of non-functional finger has been assigned as non-functional finger record; (3) the rake receiver that has been assigned to remove and recover the non-functional finger.
  2. 2.根据权利要求1所述的移动通信系统中实现耙型接收器性能提升的耙指配置管理方法,其特征在于,所述的系统预设的第一能量门限值Thl通过以下公式得到: Thl = K - A - 2B ; 其中,K为耙型接收机的全部接收信号的能量,A为导频信道能量差值,B为导频信号能量标准差。 The mobile communication system of claim 1 implemented in the rake receiver performance lifted finger configuration management method, wherein the system preset first threshold value Thl energy obtained by the following equation claims: Thl = K - a - 2B; wherein, K is the total received signal energy of rake receiver, a is a pilot channel energy difference, B is the standard deviation of the pilot signal energy.
  3. 3.根据权利要求2所述的移动通信系统中实现耙型接收器性能提升的耙指配置管理方法,其特征在于,所述的无符码间干扰波形为升余弦波形,相应的滚边因子小于0.3,所述的导频信道能量差值为30dB,所述的导频信号能量标准差为ldB。 The mobile communication system of claim 2 Rake Receiver to achieve performance improvement finger configuration management method, wherein, among said codes interference waveform is a non-raised cosine waveform corresponding to claim trim factor is less than 0.3, a difference channel energy of the pilot is 30dB, the pilot signal energy standard deviation ldB.
  4. 4.根据权利要求3所述的移动通信系统中实现耙型接收器性能提升的耙指配置管理方法,其特征在于,所述的滚边因子为0.22。 4. The mobile communication system of claim 3 implemented in the rake receiver performance lifted finger configuration management method, wherein said factor is 0.22 piping claims.
  5. 5.根据权利要求1所述的移动通信系统中实现耙型接收器性能提升的耙指配置管理方法,其特征在于,所述的无符码间干扰波形为升余弦波形,相应的滚边因子小于0.3,所述的第一能量门限差值Th2_l为13dB,所述的第二能量门限差值Th2_2为6dB。 The mobile communication system of claim 1 implemented in a rake type receiver performance lifted finger configuration management method, wherein, among said codes interference waveform is a non-raised cosine waveform corresponding to claim trim factor is less than 0.3, the difference between a first energy threshold Th2_l to 13dB, the second energy threshold difference Th2_2 is 6dB.
  6. 6.根据权利要求5所述的移动通信系统中实现耙型接收器性能提升的耙指配置管理方法,其特征在于,所述的滚边因子为0.22。 6. The mobile communication system according to the Rake Receiver to achieve performance improvement finger configuration management method, wherein, the sewing machine according to claim factor is 0.22.
  7. 7.根据权利要求1所述的移动通信系统中实现耙型接收器性能提升的耙指配置管理方法,其特征在于,所述的无符码间干扰波形为升余弦波形,相应的滚边因子小于0.3,所述的第三能量门限差值Th3为所述的疑似第三类型无功能耙指中侦测到的信号能量中相对小的值。 The mobile communication system of claim 1 implemented in a rake type receiver performance lifted finger configuration management method, wherein, among said codes interference waveform is a non-raised cosine waveform corresponding to claim trim factor is less than 0.3, said third energy threshold Th3, the difference of the type of non-functional rake suspected third detected signal energy in a relatively small value means.
  8. 8.根据权利要求7所述的移动通信系统中实现耙型接收器性能提升的耙指配置管理方法,其特征在于,所述的滚边因子为0.22。 The mobile communication system of claim 7 implemented in the performance of rake receiver fingers to lift configuration management method, wherein, the sewing machine according to claim factor is 0.22.
  9. 9.根据权利要求1、2中任一项所述的移动通信系统中实现耙型接收器性能提升的耙指配置管理方法,其特征在于,所述的无符码间干扰波形为根余弦波形或者优化升余弦波形。 The mobile communication system 1 according to any one of the rake receivers to achieve performance improvement finger configuration management method according to claim, characterized in that, between the non-interference waveform codes root cosine waveform or optimizing raised cosine waveform.
  10. 10.根据权利要求1至8中任一项所述的移动通信系统中实现耙型接收器性能提升的耙指配置管理方法,其特征在于,所述的移动通信系统为CDMA移动通信系统、WCDMA移动通信系统、CDMA2000移动通信系统或者TD — SCDMA移动通信系统。 The mobile communication system according to any one of 1 to 8 implemented in the rake receiver performance lifted finger configuration management method, characterized in that the mobile communication system is a CDMA mobile communication system according to claim, WCDMA mobile communication system, CDMA2000 mobile communication system or a TD - SCDMA mobile communication system.
CN 201010123447 2010-03-12 2010-03-12 Mobile communication system, the performance of rake receiver fingers to lift configuration management method CN102195668B (en)

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Publication number Priority date Publication date Assignee Title
CN1883142A (en) * 2003-09-30 2006-12-20 美商内数位科技公司 Rake-based CDMA receivers for multiple receiver antennas
CN101594170A (en) * 2003-03-13 2009-12-02 美商内数位科技公司 Wireless communication method and system for assigning multi-paths to rake receiver fingers

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WO2004021581A3 (en) * 2002-08-29 2004-12-23 Zyray Wireless Inc Adaptive pilot interference cancellation in cdma systems

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Publication number Priority date Publication date Assignee Title
CN101594170A (en) * 2003-03-13 2009-12-02 美商内数位科技公司 Wireless communication method and system for assigning multi-paths to rake receiver fingers
CN1883142A (en) * 2003-09-30 2006-12-20 美商内数位科技公司 Rake-based CDMA receivers for multiple receiver antennas

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