CN1953361B - A method and system for sending multiple carrier frequency signal - Google Patents

A method and system for sending multiple carrier frequency signal Download PDF

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CN1953361B
CN1953361B CN 200510109411 CN200510109411A CN1953361B CN 1953361 B CN1953361 B CN 1953361B CN 200510109411 CN200510109411 CN 200510109411 CN 200510109411 A CN200510109411 A CN 200510109411A CN 1953361 B CN1953361 B CN 1953361B
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carrier
signal
phase
frequency
means
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CN1953361A (en
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孙建勋
张艳
邓猛
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大唐移动通信设备有限公司
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Abstract

The invention relates to a method for sending multi-carrier signal. Wherein, it comprises that: generating the base band time slit of each carrier frequency; fixing the phase drift fact needed by eachcarrier wave; multiplying said base band time slit signal with relative phase drift factor; reflecting the drifted base band time slit signal. The invention also discloses a relative system, which comprises a base band time slit signal generator, carrier modulator, phase drifter, signal layer device, radio modulator. The invention can effectively reduce the signal peak/average ratio in multi-carrier TD-SCDMA.

Description

发送多载频信号的方法及系统 Multi carrier frequency transmission method and system signals

技术领域 FIELD

[0001] 本发明涉及移动通信技术领域,具体涉及一种发送多载频信号的方法及系统。 [0001] The present invention relates to the technical field of mobile communications, particularly to a method and system for transmitting multi-carrier signals.

背景技术 Background technique

[0002] 在移动通信系统中,使用多载波技术,可以使基站设备能够支持更多的用户量或提供更大的覆盖范围,提高系统容量,从而使基站数目和站址大幅度减少,使系统运营商减少投资。 [0002] In a mobile communication system, a multi-carrier technology, the base station apparatus can be made to support more users, or an amount to provide greater coverage, increase the system capacity, so that the number of base stations and location, substantial reduction of the system operators to reduce investment.

[0003] TD-SCDMA(时分-同步码分多址)系统是目前3GPP标准的三大主流技术之一。 [0003] TD-SCDMA (Time Division - Synchronous Code Division Multiple Access) system is one of three major techniques 3GPP standard. TD-SCDMA采用TDD(时分双工)方式,可实现上下行资源的非对称分配,具有很高的频带利用率,是一种理想的蜂窝网分组数据传输系统。 TD-SCDMA uses TDD (Time Division Duplex) mode, can be realized asymmetric uplink and downlink resource allocation with high bandwidth efficiency, is an ideal cellular packet data transmission system. 在3GPP规范Rlease 5版本中,TD-SCDMA系统的HSDPA最大分组数据传输速率为2. 8M bps。 In the 3GPP Specification version Rlease 5, HSDPA packet data transmission, the maximum rate for the TD-SCDMA system 2. 8M bps.

[00CH] TD-SCDMA时隙信号共848个chip (码片),其结构如图1所示: [00CH] TD-SCDMA time slot signal 848 Total Chip (chips), the structure shown in Figure 1:

[0005] 其中,突发信号中部的midamble (训练序列)是用来进行信道估计的,两边的数据 [0005] wherein, in the middle of the midamble burst signal (training sequence) is used for channel estimation, data on both sides

块用来传送业务数据。 Block used to transmit traffic data.

[0006] 上述信道估计码midamble是按以下方式生成的: [0006] The channel estimates midamble code is generated in the following manner:

[0007] 对于同一个小区的同一个时隙,给定一个基本的中间码作为基本码,不同的用户采用这个相同基本码的不同的循环移位版本作为它的信道估计码。 [0007] For the same time slot of the same cell, given a basic midamble as a basic code and different users using the same basic code different cyclically shifted version as its channel estimation code. 由同一个单独的基本码mP导出的K个特定的中间码mp(k) ;k = 1, • • • , K,构成中间码码集,简称为码集。 mp by the same single base code derived from the K mP specific midamble (k); k = 1, • • •, K, code set constituting the intermediate code, referred to as the code set. [0008] 根据现有TD-SCDMA多载波方案,对于同一小区支持的多个载波有如下约定:主载波和辅载波使用相同的扰码和基本midamble(训练序列)码,对于多载波小区,射频端共用一套发射机。 [0008] According to the prior TD-SCDMA multi-carrier scheme, the same cells for the plurality of carriers support the following rules: the primary and secondary carriers using the same scrambling code and the midamble basic (training sequence) code for multi-carrier cell, RF end a common transmitter. 现有多载波TD-SCDMA系统时隙信号形成如图2所示: Conventional multi-carrier TD-SCDMA system shown in Figure 2 slot signals are formed:

[0009] 各个载波的基本midamble码位置是完全对齐的,同时每个载波的基本midamble码都为相同的二进制序列向量。 [0009] The basic midamble code position each carrier is aligned perfectly, while the basic midamble codes are the same for each carrier of the binary sequence vector.

[0010] 多个基本midamble码相同的载波作为基带信号,还需要经过两次调制:载波调制(或者称为中频调制)和射频调制。 [0010] plurality of carriers the same basic midamble code as a baseband signal, after two further modulated: carrier modulation (or referred to as a modulated intermediate frequency) and RF modulation. 其中,载波调制是将各载波信号调制到不同的频率上;射频调制是将经过载波调制后的中频宽带信号调制到射频上。 Wherein the respective carrier modulation carrier signal is modulated onto a different frequency; RF modulator is modulated wideband signal through the intermediate frequency modulated onto the radio frequency carrier. 经过射频调制后的高频信号经由天线发送出去。 After the high-frequency modulated radio frequency signal transmitted via the antenna.

[0011] 由于TD-SCDMA是同步系统,这样在发射端基本midamble码部分就会出现由于峰峰迭加而产生较大的峰值功率,使整个时隙信号峰均比太大,会使得射频信号进入非线性区,从而产生失真和较强的频谱泄露,降低系统性能。 [0011] Since the TD-SCDMA system is synchronized, so that the basic midamble code at the transmitter portion will be greater due to the superposition of the peak-peak power, peak to average ratio of the entire slot signals is too large, such that the RF signal into the nonlinear region, resulting in strong distortion and spectral leakage, degrading system performance.

[0012] 为了降低信号峰均比,减小信号失真和频谱泄露,现有技术中主要有以下几种方法:块编码方法;削波方法;降低概率的方法。 [0012] In order to reduce PAR signal to reduce signal distortion and spectral leakage, the prior art has the following major methods: block coding method; clipping method; method of reducing the probability. 对于TD-SCDMA系统,块编码的方法实现起来非常复杂。 For TD-SCDMA system, block coding method is very complicated to implement. 削波的方法是对幅度较大的载波或者所有载波进行削减或者压縮来降低峰均比,通常有两种实现方案:一种是在基带处理中,对基带信号就进行限幅削波,另一种是在射频部分用削波器件对信号进行限幅。 Clipping method is much different carriers or all carriers or cuts to reduce the PAPR compression, there are usually two implementations: one is in the baseband, the baseband signal is clipped clipping, another signal is clipped with a clipping device in the radio frequency portion. 这两种方案都会使信号波形变形,损失大信号的精度,对于系统的性能影响较大。 Both programs will cause a signal waveform distortion, large signal loss of accuracy, a greater impact on the performance of the system. 而降低概率的方法中主要有部分发射序列和选择映射两种方案,对于不同的系统,其实现上是不相同的。 The main method for reducing the probability of emitting part sequences and selectable mapping two options, for different systems, their implementation is not the same. 目前,对于TD-SCDMA系统,还没有具体有效的改善多载波信号峰均比的方案。 At present, TD-SCDMA system, there is no specific effective improvement multicarrier signal PAPR scheme.

发明内容 SUMMARY

[0013] 本发明的目的是提供一种发送多载频信号的方法,以克服现有技术中多载波信号发射时由于多个载波采用相同的midamble码,从而产生较强的ACLR,影响系统性能的缺点,在多载波TD-SCDMA系统中,简单有效地降低多载波信号峰均比。 [0013] The object of the present invention is to provide a method for transmitting multi-frequency signals, to overcome the prior art multi-carrier signal due to transmitting the plurality of carriers with the same midamble code, thereby producing stronger the ACLR, affect system performance disadvantage, in the multi-carrier TD-SCDMA system, easily and effectively reduce the PAPR of multi-carrier signals.

[0014] 本发明的另一个目的是提供一种发送多载频信号的系统,以降低多载波信号发射 [0014] Another object of the present invention is to provide a multi-carrier signal transmission system, in order to reduce the multi-carrier signal transmitting

时的信号峰均比,提高系统性能。 When the signal PAR, improve system performance.

[0015] 为此,本发明提供如下的技术方案: [0015] To this end, the present invention provides the following technical solution:

[0016] —种发送多载频信号的方法,包括以下步骤: [0016] - the multi-frequency signal transmission method of species, comprising the steps of:

[0017] A、生成各载频的基带时隙信号; [0017] A, generates a baseband signal of each time slot of a carrier frequency;

[0018] B、确定各载波信号需要偏转的相位偏转因子; [0018] B, determines the phase of each carrier signal requires deflection deflection factor;

[0019] C、将所述各载频的基带时隙信号乘以对应的相位偏转因子; [0019] C, the baseband signal of each slot is multiplied by a carrier frequency corresponding to a phase shift factors;

[0020] D、对偏转后的基带时隙信号进行发射处理。 [0020] D, slots baseband transmit signal processing deflected.

[0021] 可选地,所述步骤B具体为: [0021] Optionally, the step B specifically comprises:

[0022] 预先为各载波分配固定的相位偏转因子。 [0022] The pre-deflection factor assigned to each carrier of fixed phase.

[0023] 可选地,所述步骤B具体为: [0023] Optionally, the step B specifically comprises:

[0024] Bl、按预定规则对各载波编号; [0024] Bl, according to a predetermined rule for each carrier number;

[0025] B2、根据载波个数N及各载波编号n确定各载波的相位偏转因子为:~^~, n = 0,1,2,.••Nl。 [0025] B2, each carrier is determined according to the phase-shift factor N the number of carriers and each carrier number of n: ~ ^ ~, n = 0,1,2 ,. •• Nl.

[0026] 可选地,所述步骤B1具体为:按照各载波的频率大小顺序对各载波编号。 [0026] Alternatively, the step B1 is specifically: the frequency in accordance with the order number of the respective carriers each carrier. [0027] 可选地,所述步骤Bl具体为: [0028] 获取系统中心频点; [0027] Alternatively, the step Bl is specifically: [0028] Center frequency acquisition system;

[0029] 按照各载波频点与中心频点的差值大小对各载波编号。 [0029] The size of each difference in accordance with the carrier frequency and the center frequency of the respective carrier numbers.

[0030] 可选地,所述步骤C具体为:将所述各载频的整个基带时隙信号乘以对应的相位偏转因子。 [0030] Optionally, the Step C: the entire baseband signal of each slot is multiplied by a carrier frequency corresponding to a phase shift factors.

[0031] 可选地,所述步骤C具体为:将所述各载频的基带时隙信号的midamble信号部分乘以对应的相位偏转因子。 [0031] Optionally, the Step C: the midamble portion of the baseband signal in the frequency slot signals each multiplied by the corresponding carrier phase shift factors.

[0032] —种发送多载频信号的系统,所述系统包括: [0032] - Multi-species transmission carrier frequency signals, the system comprising:

[0033] 与各载波对应的基带时隙信号生成装置,用于生成各载频的基带时隙信号; [0034] 与各载波对应的载波调制装置,用于将各基带时隙信号调制到不同的频率上; [0035] 信号叠加装置,分别耦合于各载波调制装置,用于对调制到不同频率上的载波信号进行叠加处理; [0033] The baseband signal generating means corresponding to the timeslot of each carrier for generating a baseband signal of each carrier frequency time slots; [0034] each carrier corresponding to the carrier modulating means for modulating each baseband signal time slot to a different the frequency; [0035] the signal adding means, respectively coupled to the respective carrier modulation means for modulating onto a carrier signal of a different frequency superposition processing;

[0036] 射频调制装置,耦合于所述信号叠加装置,用于将叠加后的多载波信号调制到射频上,并通过天线发送出去; [0036] RF modulator means, coupled to said signal superimposition means for modulating the multi-carrier signal superimposed on the radio frequency, and transmitted through the antenna;

[0037] 与各载波对应的相位偏转装置,分别耦合于对应的所述基带时隙信号生成装置和所述载波调制装置,用于使所述基带时隙信号生成装置输出的基带时隙信号产生相位偏转。 [0037] and the phase of each carrier corresponding to the deflection means, respectively coupled to a corresponding time slot of the base band signal generating means and said carrier modulation means, for causing the slot base band signal generating means outputs a baseband signal generating slot phase-shifted.

[0038] 优选地,所述系统进一步包括: [0038] Preferably, the system further comprising:

[0039] 分配装置,分别耦合于各相位偏转装置,用于为各载波分配对应的相位偏转因子。 [0039] The dispensing means are coupled to each phase of the deflection means for deflecting factor corresponding to each assigned carrier phase. [0040] 优选地,所述系统进一步包括: [0040] Preferably, the system further comprising:

[0041] 偏转因子计算装置,耦合于所述分配装置,用于根据载波个数计算各载波对应的相位偏转因子。 [0041] The deflection factor calculating means, coupled to said dispensing means, for deflecting the number of carriers calculated for each factor corresponding to the phase of the carrier according to.

[0042] 由以上本发明提供的技术方案可以看出,本发明在TD-SCDMA系统中,对各载波基带时隙信号分别乘以一个确定的相位偏转因子,并且使各载波对应的相位偏转因子与载波频率有唯一的对应关系,从而降低了射频信号峰峰迭加的概率,降低了信号峰均比,改善了射频端发射性能。 [0042] provided by the above aspect of the present invention can be seen, the present invention in the TD-SCDMA system, the time slot for each carrier baseband signal is multiplied by a factor to determine the phase of the deflection, and the deflection of each carrier corresponding to a phase factor there is a unique correspondence between the carrier frequency, thereby reducing the probability of a radio frequency signal superimposed peak reduced signal PAPR, performance improved RF transmitter end. 由于各载波对应的相位偏转因子与载波频率具有唯一的对应关系,因此用户端接收信号时,也只需根据该对应关系,即可计算出工作载波上需要恢复的相位偏移, 得出各载波采用的基本midamble码,进行信道估计,获得所需信号。 Since each carrier corresponding to the carrier frequency and phase shift factors having a unique correspondence relationship, thus when receiving signals, according to the correspondence only, the UE can calculate the phase shift needed to recover the work carrier, each carrier obtained the basic midamble code used, channel estimation, to obtain the desired signal. 整个时隙乘以相位偏转的方案,因为TD-SCDMA系统接收端采用的是相干检测方法,如联合检测技术,所以用户端不用知道相位偏转的信息,不用做任何改动,不需要任何逆操作,这给系统实现带来了很大的好处。 The entire slot is multiplied by the phase-shifted programs, because TD-SCDMA system, the receiving end uses coherent detection methods, such as joint detection technique, the user terminal need not know the information of the phase of deflection, without any changes, without any reverse operation, this gives the system implementation has brought great benefits.

附图说明 BRIEF DESCRIPTION

[0043] 图1是TD-SCDMA时隙信号结构示意图; [0043] FIG. 1 is a schematic structure of a signal slot TD-SCDMA;

[0044] 图2是现有多载波TD-SCDMA系统时隙信号形成过程示意图; [0044] FIG. 2 is a diagram of a conventional multi-carrier TD-SCDMA system slot signals forming process;

[0045] 图3是本发明方法的实现流程图; [0045] FIG. 3 is a flow chart for implementing the method of the present invention;

[0046] 图4是有三个载波时各相位偏转因子分布示意图; [0046] FIG. 4 is a schematic view of the distribution of each of the phase-shift factor when three carriers;

[0047] 图5是本发明系统的第一实施例原理框图; [0047] FIG. 5 is a block diagram of a first embodiment of the inventive system;

[0048] 图6是本发明系统的第二实施例原理框图; [0048] FIG. 6 is a block diagram of a second embodiment of the inventive system;

[0049] 图7是本发明系统的第三实施例原理框图。 [0049] FIG. 7 is a block diagram of a third embodiment of the present system.

具体实施方式 Detailed ways

[0050] 本发明的核心在于在TD-SCDMA系统中,对各载波基带时隙信号分别乘以一个确定的相位偏转因子,并且使各载波对应的相位偏转因子与载波频率有唯一的对应关系。 [0050] The core of the invention lies in the TD-SCDMA system, the time slots for each carrier baseband signal is multiplied by a factor to determine the phase of the deflection, and the phase of each carrier corresponding to the carrier frequency of the deflection factor unique correspondence. 然后,对偏转后的基带时隙信号再进行发射处理,以降低射频信号峰峰叠加出现较大峰值的概率。 Then, the baseband signal slot deflected further transmission processing, in order to reduce the probability of a larger radio frequency signal peak is superimposed peaks.

[0051] 为了使本技术领域的人员更好地理解本发明方案,下面结合附图和实施方式对本发明作进一步的详细说明。 [0051] In order to make those skilled in the art a better understanding of the invention, the accompanying drawings and the following embodiments described in detail further embodiment of the present invention.

[0052] 参照图3,图3示出了本发明方法的实现流程,包括以下步骤: [0053] 步骤301 :生成各载频的基带时隙信号。 [0052] Referring to FIG 3, FIG. 3 shows an implementation flow of a method of the present invention, comprising the steps of: [0053] Step 301: generate a baseband signal of each carrier frequency time slots.

[0054] 根据TD-SCDMA标准的规定和业务数据,生成各个载频的基带时隙信号。 [0054] The TD-SCDMA standard and the predetermined service data, generates a baseband carrier frequency signal of each time slot. [0055] 步骤302 :确定各载波信号需要偏转的相位偏转因子。 [0055] Step 302: determining the phase of each carrier signal requires deflection deflection factor.

[0056] 可以预先为各载波分配一个固定的相位偏转因子,分配原则是:尽量使在midamble信号部分多个载波相位达到一致或者差别很小的概率减小,也即使各个载波信号叠加在一起出现较大峰值的概率减小。 [0056] may be pre-assigned a fixed phase factor for the deflection of each carrier, the allocation principle is: as far as possible to achieve the same or a small difference in the probability of a plurality of parts to reduce the carrier phase midamble signals, even if the respective carrier signals appear superposed It decreases the probability of larger peaks.

5[0057] 在实际应用中,在确定了系统载频的个数,以及各个载频的频率差后,可以通过仿真来确定各个载频的相位偏转因子。 5 [0057] In a practical application, the system determines the number of carrier frequencies and each carrier frequency after the frequency difference, the carrier frequency may be determined by simulation of each phase-shift factor.

[0058] 载波个数N确定后,根据各个载波频率的相对大小,预先给各个载波分配一个固定的相位偏转因子。 After [0058] N the number of carriers is determined based on the relative size of each carrier frequency, a fixed pre-allocated to each carrier phase shift factors.

[0059] 比如,某小区支持的载波数为3时,可以根据载波频率的大小设定相位偏转因子 [0059] For example, a number of carriers supporting the cell 3 is to be set according to the phase of the deflection factor in the size of the carrier frequency

为:e +o. 5Pi, e , e +o. 5Pi,其中,e可以是任意值;再比如,某小区支持的载波数为4时, It is: e + o 5Pi, e, e + o 5Pi, wherein, E may be any value; another example, when the number of carriers in a cell 4 is supported,.

设定各载波对应的相位偏转因子为:9 +0. 575859PI, e , e , e +0. 575859PI。 Setting the phase of each carrier corresponding to the deflection factor:. 9 +0 575859PI, e, e, e +0 575859PI.. 需要说明的 It should be noted

是,示例中所选取的相位都是多载波相位旋转过程中各载波相位的一个快照,并且是多载 Is a snapshot of each of the examples of the carrier phase is the phase of the selected phase rotation in a multi-carrier, multi-carrier, and

波情况下使Midamble部分的峰值最小的最佳相位取值中的一个。 Midamble portion so that the waves when the peak value of the minimum optimum phase one. 这样的最佳相位至少还 Such optimum phase also at least

存在一个相对于e轴共轭的取值。 E value exists with respect to the axis a conjugated. 最佳相位的取值不是唯一的,但其他的取值都是在上述 Optimum phase value is not unique, but other values ​​are in the above

最佳取值基础上,附加了载波频率经过一定的时间形成的相位旋转之后的结果。 Based on the optimum value, the result is added after the phase rotation of the carrier frequency after a certain time of formation. 此外,除了最佳取值外,还可以取非最佳值, 一样可以降低多载波峰均值比,只是效果相对差一些。 Further, in addition to the optimum value, the optimum value may also be negated, as multi-carrier can be reduced peak to average ratio, but the relative difference in some of the effects.

[0060] 还可以根据载波个数使各载波对应的相位偏转因子在一个圆周上均匀分布。 [0060] The carrier may also each corresponding to a phase shift factors uniformly distributed over the circumference according to a number of carriers. 根据 according to

频点的个数N,计算各载波信号对应的相位偏转因子为:"^tt^, n = 0, 1, 2,... Nl。这样, Frequency point number N, calculates the signal corresponding to each of the carrier phase-shift factor:. "^ Tt ^, n = 0, 1, 2, ... Nl so,

各载频的相位偏转因子均匀分布在单位圆周上,这种相位分布可以使各个载波的midamble 信号的峰值叠加后不再出现峰峰值,减小了多载频信号峰峰出现的概率,从而降低了多载频信号的峰均比。 Each carrier frequency phase shift factors evenly distributed on the unit circle, such a phase distribution may be the peak of the midamble signal of each carrier after the peak is no longer superposed to reduce the probability of a multi-carrier signal peak occurring, thereby reducing PAR multi-carrier frequency signal.

[0061] 对各载波可以根据其频率的大小,从低到高,或者从高到低,进行排序,也可以按照各载波的频点与系统中心频点的差值大小对各载波编号。 [0061] according to the size of each carrier frequency from low to high or high to low, sorted according to size difference may each carrier frequency and the center frequency of the system number for each carrier.

[0062] 这样,根据各载波的编号即可确定其对应的相位偏转因子,也就是说,各载波与相位偏转因子有唯一的对应关系。 [0062] In this way, each carrier can be determined which corresponds to the number of phase-shift factor based, that is, each carrier phase-shift factor has unique correspondence.

[0063] 步骤303 :将各载频的基带时隙信号乘以对应的相位偏转因子。 [0063] Step 303: a baseband signal of each slot is multiplied by a carrier frequency corresponding to a phase shift factors.

[0064] 由于TD-SCDMA系统射频信号产生较强的ACLR(邻信道泄露功率比)的根本原因 [0064] Since the TD-SCDMA system radio frequency signal generated stronger the ACLR (adjacent channel leakage power ratio) of the root cause of

在于各载波使用相同的扰码和基本midamble码,在信号叠加时产生了较强的信号峰值功 In that each carrier using the same scrambling code and basic midamble code, a stronger signal is generated when the peak power signal superimposed

率。 rate. 而通过将各载频的基带时隙信号乘以不同的相位偏转因子,使各载波信号的相位产生 Through slot baseband signal is multiplied by a carrier frequency of each different phase shift factors, the phase of each carrier signal generated

不同的偏转,可以有效地减少出现较大峰值的概率。 Different deflection, can effectively reduce the probability of a larger peak.

[0065] 可以将整个时隙信号都乘以相位偏转因子,也可以只在midamble信号部分乘以对应的相位偏转因子。 [0065] can be the entire slot signals are multiplied by a phase-shift factor may be multiplied by a factor corresponding to the phase-shift only midamble signal portions.

[0066] 如果在整个基带时隙信号(包括两个数据部分和midamble)都乘以相位偏转因子,那么因为终端是相干检测,如联合检测,那么终端就不用做任何变化,也不用知道本载频的相位偏转因子,而不影响终端的信号检测。 [0066] If the entire slot baseband signal (the midamble and two data portions) are multiplied by the phase-shift factor, because the terminal is then coherent detection, joint detection, then the terminal would not have to make any changes, they do not know the present carrier frequency phase shift factors, without affecting the signal detection terminal.

[0067] 如果只是在基带时隙信号的midamle码部分乘以相位偏转因子,数据部分不乘, [0067] If only the baseband signal, code slot portion midamle phase-shift factor is multiplied, the data do not take part,

那么终端必须知道所使用的载频的相位偏转因子。 Then the terminal must know the phase-shift factor used carrier frequency.

[0068] 步骤304 :对偏转后的基带时隙信号进行发射处理。 [0068] Step 304: baseband signal deflection slot for transmission processing.

[0069] 前面已经提到,基带时隙信号在发射时还需要经过两次调制:载波调制(或者称为中频调制)和射频调制。 [0069] As already mentioned, the baseband signal at the transmitting time slot will also be required after two modulated: carrier modulation (or referred to as a modulated intermediate frequency) and RF modulation. 其中,载波调制是将各载波信号调制到不同的频率上;射频调制是将经过载波调制后的中频宽带信号调制到射频上。 Wherein the respective carrier modulation carrier signal is modulated onto a different frequency; RF modulator is modulated wideband signal through the intermediate frequency modulated onto the radio frequency carrier. 经过射频调制后的高频信号经由天线发送出去。 After the high-frequency modulated radio frequency signal transmitted via the antenna.

6[0070] 终端在接收基站的发射信号时,需要知道本终端在当前频点下接收的信号使用的相位偏转因子,以便解调出正确的用户信号。 6 [0070] The terminal receives the base station transmitted signal, this terminal needs to know the point at the current received frequency signal phase-shift factor used to correct the demodulated user signals.

[0071] 如果采用相位偏转因子均匀分布于圆周上的方式来分配各载波对应的相位偏转因子,由于各载波对应的相位偏转因子按照频率的相对大小关系自动分配,因此,终端只需知道当前小区配置的频点个数N,通过自己的载频的频率在所有载频中的位置,就能获知本终端在当前频率下接收的信号使用的相位偏转因子。 [0071] If the phase-shift factor uniformly distributed manner on the circumference of each carrier allocated corresponding phase shift factors, since the phase of each carrier corresponding to the shift factors assigned according to the relative magnitude versus frequency, therefore, the terminal only needs to know the current cell Configuring the number of frequency points N, the frequency of their position in the carrier frequency of all carrier frequencies, the phase of the signal can be known using a terminal according to the current received frequency shift factors.

[0072] 如果采用固定分配相位偏转因子的方式,也就是说,各载波对应的相位偏转因子并不是均匀地分布在一个圆周上,这些相位偏转因子可以相同,也可以不同。 [0072] If the phase-shifted manner fixed allocation factors, i.e., corresponding to each carrier phase shift factors are not evenly distributed on a circle, these phase-shift factor may be the same or different. 这时,就需要基站将分配的相位偏转因子通过系统消息通知终端,以使终端根据在当前频率下接收的信号使用的相位偏转因子解调出正确的用户信号。 In this case, the base station needs to be assigned by the phase shift factors system message informs the terminal, so that the terminal according to the current phase of the received signal using a frequency shift factors correct demodulated user signals.

[0073] 下面以3个载频为例,进一步详细说明本发明方法的处理过程。 [0073] In the following three carrier frequencies, for example, described in further detail processing method of the present invention.

[0074] 首先,根据N二3计算出各个载频的相位偏转因子为:e邓(j0), e邓(j2PI/3), [0074] First, the phase-shift factor calculated in accordance with the carrier frequency of each N = 3 as: e Tang (j0), e Deng (j2PI / 3),

exp(j4PI/3),其中,PI = 3. 1415926,为数学常数。 exp (j4PI / 3), where, PI = 3. 1415926, is a mathematical constant.

[0075] 各载频的相位偏转因子分布如图4所示。 [0075] Each phase shift factors carrier distribution shown in Fig.

[0076] 然后,根据各载频的频率大小确定各自的相位偏转因子,载频1的基带时隙信号乘以相位偏转因子e邓(j0),载频2的基带时隙信号乘以相位偏转因子e邓(J2PI/3),载频3的基带时隙信号乘以相位偏转因子e邓(j4PI/3); [0076] Then, the respective determined phase shift factors, the carrier frequency time slot baseband signal is multiplied by a phase factor e deflection Deng (J0), a baseband signal 2 in the carrier frequency time slots according to the size of each frequency is multiplied by a carrier frequency phase-shift Deng factor e (J2PI / 3), the carrier frequency time slots 3 baseband signal is multiplied by a phase factor e deflection Deng (j4PI / 3);

[0077] 各载频基带时隙信号分别乘以各自的相位偏转因子,然后进行数字中频处理,各 [0077] The baseband carrier frequency of each time slot signals are multiplied by the respective phase shift factors, then the digital IF processing, each

载波信号叠加在一起形成多载波信号,进行射频调制,通过天线发射出去。 Carrier signal superimposed together to form a multi-carrier signal, modulated radio frequency, through the antenna out.

[0078] 图5示出了本发明系统的第一实施例的原理框图: [0078] FIG. 5 shows the principle of a first embodiment of the present invention is a block diagram of the system:

[0079] 如果系统同时有N个载波信号需要发射,则对应于每个载波,有与该载波相应的基带时隙信号生成装置、相位偏转装置和载波调制装置。 [0079] If there are N carriers system also needs to transmit signals, each corresponding to the carrier, the carrier has a corresponding time slot baseband signal generating means, carrier phase modulation means and the deflection means.

[0080] 如图5所示,对应于载波l,基带时隙信号生成装置Sll生成该载波的基带时隙信 [0080] As shown in FIG 5, L corresponding to the carrier, the baseband signal generating means slot Sll generated channel time slot group of the carrier tape

号,然后,由相位偏转装置S12使基带时隙信号生成装置Sll输出的基带时隙信号产生相位 Number, then the deflection means S12 by the phase of the baseband signal Sll slot generating means outputs a baseband signal to generate a phase slots

偏转,然后再由载波调制装置S13将偏转后的基带时隙信号调制到相应的频率上。 Deflection means then modulated by a carrier signal S13 to the slot modulating baseband deflected to the corresponding frequency.

[0081] 对应于载波2,基带时隙信号生成装置S21生成该载波的基带时隙信号,然后,由 [0081] corresponding to the carrier 2, the baseband signal generating means slot S21 generates a baseband signal time slot of the carrier, and then, by the

相位偏转装置S22使基带时隙信号生成装置S21输出的基带时隙信号产生相位偏转,然后 Deflecting means S22 that the time slot phase signal generating means outputs a baseband S21 slot signals phase-shifted to produce baseband, and

再由载波调制装置S23将偏转后的基带时隙信号调制到相应的频率上。 Then modulated by a carrier means S23 baseband signal time slot to deflect the respective frequency modulated.

[0082] 对应于载波N,基带时隙信号生成装置SN1生成该载波的基带时隙信号,然后,由 [0082] corresponding to a carrier N, slot baseband signal generating means generates the carrier SN1 slot baseband signal, and then, by the

相位偏转装置SN2使基带时隙信号生成装置SN1输出的基带时隙信号产生相位偏转,然后 Deflecting means in slot SN2 phase signal generating means outputs SN1 slot baseband signals phase-shifted to produce baseband, and

再由载波调制装置SN3将偏转后的基带时隙信号调制到相应的频率上。 Then modulated by a carrier means SN3 slot baseband signal modulated onto the corresponding deflection frequencies.

[0083] 信号叠加装置S4对调制到不同频率上的载波信号进行叠加处理,由于各相位偏 [0083] S4 modulated signal superimposition means into a different frequency carrier signal superposition processing, since the phase bias

转装置对各基带时隙信号进行了不同的相位偏转,因此,在多个信号叠加时,多个载波信号 Transfer means for each baseband signal slots of different phase-shift, and therefore, when the plurality of superimposed signals, a plurality of carrier signals

midamble部分峰峰值叠加产生较强信号峰值功率的概率就会大大降低,提高了系统发射性能。 Probability peak superposition midamble portion signal stronger peak power will be greatly reduced, improving the emission performance of the system.

[0084] 所有载波信号经过叠加处理后,由一套射频调制装置S15将叠加后的多载波信号调制到射频上,并通过天线发送出去。 [0084] After all the carrier signal superposition processing, multi-carrier signal modulated by a set of RF modulation means S15 are superimposed on a radio frequency, and transmitted through an antenna.

[0085] 在该实施例中,各相位偏转装置对输入的基带时隙信号产生固定的相位偏转。 [0085] In this embodiment, each phase deflection device deflecting a fixed phase baseband signal input slot. [0086] 为了提高系统的灵活性,也可以对各载波随机分配其对应的相位偏转因子。 [0086] In order to improve the flexibility of the system, which may be randomly assigned to each carrier wave corresponding to a phase shift factors.

7[0087] 参照图6所示的本发明系统的第二实施例的原理框图: 7 [0087] The schematic block diagram of a second embodiment of the system according to the present invention shown in FIG. 6 with reference to:

[0088] 由分配装置S6为各相位偏转装置分配各载波对应的相位偏转因子,这些相位偏转因子中可以有相同、也可以有不同,比如,有2个载波时,设置其对应的相位偏转因子分别为PI/2,0,2个载波时相位可以任意;有3个载波时,设置其对应的相位偏转因 [0088] by the dispensing means S6 for the phase-shift means for allocating each carrier corresponding to a phase shift factors, these phase-shift factor may have the same or different, for example, there are 2 carriers, provided that the corresponding phase shift factors are arbitrary phase when the PI / 2,0,2 carriers; when the carrier 3, is provided by its corresponding phase-shifted

子分别为e+o.5Pi, e, e+o.5Pi ;有4个载波时,设置其对应的相位偏转因子分别为 Sub are e + o.5Pi, e, e + o.5Pi; 4 carriers when setting the corresponding phase shift factors are

9+0. 575859PI, e, e, e+0. 575859PI。 9 + 0. 575859PI, e, e, e + 0. 575859PI. 这样,可以使系统根据不同的实际应用需要,灵活 In this way, you can make the system depending on the actual needs, flexible

地设置各载波对应的相位偏转因子,由相位偏转装置将输入的基带时隙信号和对应的相位偏转因子相乘,使基带时隙信号产生相位偏转,减少多载波信号在叠加时产生峰峰值的概率。 Provided corresponding to each carrier phase shift factors, the deflection means by a phase group with the input signal and the corresponding time slot phase shift factors multiplied by the baseband signal generating phase-shift slot, multi-carrier signal to reduce the peak generated when superimposed probability.

[0089] 为了进一步降低多载波信号在叠加时峰均比的值,可以使各载波对应的相位偏转因子均匀分布于一个圆周上,如图4所示。 [0089] In order to further reduce the value of the multi-carrier signal superimposed PAPR allows the respective corresponding carrier phase shift factors uniformly distributed on a circle, as shown in FIG.

[0090] 参照图7所示的本发明系统的第三实施例的原理框图: [0090] The schematic block diagram of a third embodiment of the system according to the present invention shown in FIG. 7 with reference to:

[0091] 首先由偏转因子计算装置S7根据载波个数N及各载波的编号计算各载波对应的?7氺2tt [0091] The first factor is calculated by the deflection computing apparatus according to the numbering S7 N the number of carriers and each carrier of each carrier corresponding to? 7 Shui 2tt

相位偏转因子:~^7~, n = 0, 1, 2,. . . Nl,其中,n是载波编号。 Phase-shift factor: ~ ^ 7 ~, n = 0, 1, 2 ,. Nl, wherein, n being a carrier number... 载波编号可以按照频率大 Carrier frequency in accordance with a large number can be

小顺序进行编号,也可以按照各频点和系统中心频点的差值的大小关系来编号,当然也可以采用其他的编号方式,根据实际需要选择。 Small numbered sequentially, each may be in accordance with the system frequency and the center frequency difference of the magnitude relation numbered, although other numbering may be used, selected according to actual needs.

[0092] 偏转因子计算装置S7计算出各载波对应的相位偏转因子后,发送给分配装置S6, 再由分配装置S6为各相位偏转装置将各载波对应的相位偏转因子发送给各相位偏转装置,相位偏转装置将输入的基带时隙信号乘上相应的相位偏转因子,使基带时隙信号产生相位偏转,再将偏转后的基带时隙信号发送给信号叠加装置,对多载波信号进行叠加处理, 最后,经过射频调制装置将叠加后的多载波信号调制到射频上,并通过天线发送出去。 [0092] The deflection factor calculating means S7 calculated for each carrier corresponding to the phase of the deflection factor, transmitted to the dispensing means S6, then the dispensing means S6 for the phase-shift means of each carrier corresponding to a phase shift factors transmitted to each phase deflection means, the baseband signal phase slot deflection means input by the corresponding phase shift factors, the time slot of the baseband signal to generate a phase deflection, slot transmission baseband signal to the deflection signal and then superimposing means for superimposing multicarrier signal processing, Finally, after the multi-carrier signal modulated radio frequency modulation means is superimposed on the radio frequency, and transmitted through an antenna. [0093] 在终端接收信号时,由于各相位偏转因子与载波具有一定的对应关系,因此,终端可以很容易地根据在当前频率下接收的信号使用的相位偏转因子解调出正确的用户信号。 [0093] Upon receiving the signal, since the phase-shift factor and a carrier having a certain relationship, and therefore, the terminal can easily demodulate the deflection factor in the correct user terminal according to the phase of the received signal at the current frequency of the signal used. [0094] 如果在发射端整个时隙信号都乘以了相位偏转因子,则终端采用相干检测方法进行信号检测时,不用做任何变化,即可正确检测信号。 When [0094] If the entire slot at the transmitting end phase-shift signal is multiplied by a factor, the terminal uses a coherent detection method for signal detection, without making any changes, the signal can be correctly detected.

[0095] 虽然通过实施例描绘了本发明,本领域普通技术人员知道,本发明有许多变形和变化而不脱离本发明的精神,希望所附的权利要求包括这些变形和变化而不脱离本发明的精神。 [0095] Although the present invention is depicted by way of example, those of ordinary skill in the art know that there are many modifications and variations of the present invention without departing from the spirit of the invention, it intended that the appended claims cover such modifications and variations are possible without departing from the present invention the spirit of.

Claims (10)

  1. 一种发送多载频信号的方法,其特征在于,包括以下步骤:A、生成各载频的基带时隙信号;B、确定各载波信号需要偏转的相位偏转因子;C、将所述各载频的基带时隙信号乘以对应的相位偏转因子;D、对偏转后的基带时隙信号进行发射处理。 A transmission method of multi-frequency carrier signal, characterized by comprising the steps of: A, generates a baseband signal of each time slot of a carrier frequency; B, each carrier signal determining a phase shift factors required deflection; C, each carrying the the baseband signal in the frequency slot is multiplied by the corresponding phase shift factors; D, slots baseband transmit signal processing deflected.
  2. 2. 根据权利要求1所述的方法,其特征在于,所述步骤B具体为:预先为各载波分配固定的相位偏转因子。 2. The method according to claim 1, wherein the step B specifically comprises: a pre-allocated to each carrier of fixed phase shift factors.
  3. 3. 根据权利要求1所述的方法,其特征在于,所述步骤B具体为:Bl、按预定规则对各载波编号;B2、根据载波个数N及各载波编号n确定各载波的相位偏转因子为: 3. The method according to claim 1, wherein said step B is: Bl, ID for each carrier according to a predetermined rule; B2, determining a phase of each carrier in accordance with the number of carriers N and each deflection carrier numbers n factor:
  4. 4. 根据权利要求3所述的方法,其特征在于,所述步骤B1具体为:按照各载波的频率大小顺序对各载波编号。 4. The method according to claim 3, wherein the step B1 is specifically: the order according to the frequency of each carrier number for each carrier.
  5. 5. 根据权利要求3所述的方法,其特征在于,所述步骤B1具体为:获取系统中心频点;按照各载波频点与中心频点的差值大小对各载波编号。 5. The method according to claim 3, wherein said step B1: obtaining center frequency systems; by the difference between the size of each of the carrier frequency and the center frequency of the respective carrier numbers.
  6. 6. 根据权利要求1所述的方法,其特征在于,所述步骤C具体为:将所述各载频的整个基带时隙信号乘以对应的相位偏转因子。 6. The method according to claim 1, wherein said Step C: the entire baseband signal of each slot is multiplied by a carrier frequency corresponding to a phase shift factors.
  7. 7. 根据权利要求1所述的方法,其特征在于,所述步骤C具体为:将所述各载频的基带时隙信号的midamble信号部分乘以对应的相位偏转因子。 7. The method according to claim 1, wherein said Step C: the midamble portion of the baseband signal in the frequency slot signals each multiplied by the corresponding carrier phase shift factors.
  8. 8. —种发送多载频信号的系统,所述系统包括:与各载波对应的基带时隙信号生成装置,用于生成各载频的基带时隙信号;与各载波对应的载波调制装置,用于将各基带时隙信号调制到不同的频率上;信号叠加装置,分别耦合于各载波调制装置,用于对调制到不同频率上的载波信号进行叠加处理;射频调制装置,耦合于所述信号叠加装置,用于将叠加后的多载波信号调制到射频上,并通过天线发送出去;其特征在于,所述系统还包括:与各载波对应的相位偏转装置,分别耦合于对应的所述基带时隙信号生成装置和所述载波调制装置,用于使所述基带时隙信号生成装置输出的基带时隙信号产生相位偏转。 8. - kind of multi-carrier transmission system, pilot signal, the system comprising: a carrier corresponding to each slot baseband signal generating means for generating a baseband signal of each carrier frequency time slots; carriers corresponding to the respective carrier modulation means, time slots for each of the baseband signal is modulated onto a different frequency; said RF modulating means, coupled to; signal adding means, respectively coupled to the respective carrier modulation means for modulating onto a carrier signal of a different frequency superposition processing signal superimposition means for modulating the multi-carrier signal superimposed on a radio frequency, and transmitted through the antenna; wherein, said system further comprising: a phase of each carrier corresponding to the deflection means, respectively coupled to the corresponding baseband signal generating means and said slot-carrier modulation means, for causing the slot base band signal generating means outputs the generated baseband signals phase-shifted slot.
  9. 9. 根据权利要求8所述的系统,其特征在于,所述系统进一步包括:分配装置,分别耦合于各相位偏转装置,用于为各载波分配对应的相位偏转因子。 9. The system according to claim 8, characterized in that, the system further comprising: dispensing means, respectively coupled to each phase of the deflection means for deflecting factor corresponding to each assigned carrier phase.
  10. 10. 根据权利要求8或9所述的系统,其特征在于,所述系统进一步包括:偏转因子计算装置,耦合于所述分配装置,用于根据载波个数计算各载波对应的相位偏转因子。 10. The system of claim 8 or claim 9, characterized in that the system further comprises: a deflection factor calculating means, coupled to said assignment means for calculating the phase of each carrier corresponding to the number of carriers in accordance with the deflection factor.
CN 200510109411 2005-10-18 2005-10-18 A method and system for sending multiple carrier frequency signal CN1953361B (en)

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CN101359945B (en) 2007-07-30 2012-04-18 大唐移动通信设备有限公司 Method and apparatus lowering peak average ratio
CN101383794B (en) 2007-09-06 2010-12-29 大唐移动通信设备有限公司 Method and apparatus lowering peak average ratio
CN100559786C (en) 2007-10-22 2009-11-11 清华大学 Frequency division multiple address access method of time-domain synchronous orthogonal frequency division multiplexing system
CN101442336B (en) 2007-11-19 2012-11-14 大唐移动通信设备有限公司 Method and apparatus for reducing peak-to-average ratio
CN101534274B (en) 2008-03-12 2011-07-20 大唐移动通信设备有限公司 Method for reducing peak-to-average power ratio in mobile communication system and device thereof
WO2010139095A1 (en) * 2009-06-05 2010-12-09 Telefonaktiebolaget L M Ericsson (Publ) Method of and base station for reducing peak - to - average power ratio for a multicarrier transmission
CN101984615A (en) * 2010-11-19 2011-03-09 京信通信系统(中国)有限公司 Device for reducing peak-to-average power ratio and method and application thereof
WO2012100377A1 (en) * 2011-01-30 2012-08-02 Telefonaktiebolaget L M Ericsson (Publ) A method and arrangement for training sequence allocation

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