WO2012031492A1 - Method and user equipment for acquiring orthogonal variable spreading factor code - Google Patents

Method and user equipment for acquiring orthogonal variable spreading factor code Download PDF

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Publication number
WO2012031492A1
WO2012031492A1 PCT/CN2011/075000 CN2011075000W WO2012031492A1 WO 2012031492 A1 WO2012031492 A1 WO 2012031492A1 CN 2011075000 W CN2011075000 W CN 2011075000W WO 2012031492 A1 WO2012031492 A1 WO 2012031492A1
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Prior art keywords
spreading factor
accumulated
orthogonal variable
value
variable spreading
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PCT/CN2011/075000
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French (fr)
Chinese (zh)
Inventor
彭念
吴更石
孙凤宇
朱芳菲
余硕军
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华为终端有限公司
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Priority to CN2010102765122A priority Critical patent/CN101944931B/en
Priority to CN201010276512.2 priority
Application filed by 华为终端有限公司 filed Critical 华为终端有限公司
Publication of WO2012031492A1 publication Critical patent/WO2012031492A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69Spread spectrum techniques
    • H04B1/707Spread spectrum techniques using direct sequence modulation
    • H04B1/7073Synchronisation aspects
    • H04B1/7075Synchronisation aspects with code phase acquisition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J13/00Code division multiplex systems
    • H04J13/0007Code type
    • H04J13/004Orthogonal
    • H04J13/0044OVSF [orthogonal variable spreading factor]

Abstract

A method for acquiring Orthogonal Variable Spreading Factor codes is disclosed in the invention. The method includes: descrambling the received signals (101); respectively correlating the descrambled receipt signals with the second to the 256th Orthogonal Variable Spreading Factor codes which have a spreading factor of 256 (102); respectively accumulating the correlation values of the 255 paths of correlated signals within a length of 256 (103); respectively accumulating and averaging, within a length of a first predetermined value, the 255 paths of signals of which the correlation values are accumulated (104); respectively acquiring the energy of the 255 paths of signals accumulated and averaged, and then respectively accumulating and averaging the acquired energy of the 255 paths of signals within a length of a second predetermined value (105); and acquiring the Orthogonal Variable Spreading Factor code of the auxiliary pilot according to the energy of the 255 paths of signals which are accumulated and averaged within a length of the second predetermined value (106). The present invention can make the user equipment, which does not support Multiple Input Multiple Output, acquire the Orthogonal Variable Spreading Factor code of the auxiliary pilot according to the received signals.

Description

获得正交可变扩频因子码的方法和用户设备  Method and user equipment for obtaining orthogonal variable spreading factor code
本申请要求于 2010年 9月 7日提交中国专利局、 申请号为 201010276512.2、 发明名称为"获得正交可变扩频因子码的方法和用户设备"的中国专利申请的 优先权, 其全部内容通过引用结合在本申请中。  This application claims priority to Chinese Patent Application No. 201010276512.2, entitled "Method and User Equipment for Obtaining Orthogonal Variable Spreading Factor Codes", filed on September 7, 2010, the entire contents of which is hereby incorporated by reference. This is incorporated herein by reference.
技术领域 Technical field
本发明涉及移动通信技术领域,具体涉及一种获得正交可变扩频因子码的 方法和用户设备。  The present invention relates to the field of mobile communication technologies, and in particular, to a method and user equipment for obtaining an orthogonal variable spreading factor code.
背景技术 Background technique
在宽带码分多址( Wideband Code Division Multiple Access, WCDMA ) 系 统中, 导频信道是固定速率的下行物理信道, 其用于传送导频符号。  In Wideband Code Division Multiple Access (WCDMA) systems, the pilot channel is a fixed rate downlink physical channel used to transmit pilot symbols.
在 WCDMA系统中, 基站如果使用双天线发射 , 则可以通过主辅导频模 式来发射导频符号。基站通过主天线发送主导频, 主导频的正交可变扩频因子 码 ( Orthogonal Variable Spreading Factor code, OVSF )为 0, 基站还通过辅天 线发送辅导频, 辅导频的 OVSF是基站通过信令告知用户设备。  In a WCDMA system, if the base station transmits using dual antennas, the pilot symbols can be transmitted through the primary pilot frequency mode. The base station transmits the pilot frequency through the primary antenna, and the Orthogonal Variable Spreading Factor Code (OVSF) of the dominant frequency is 0. The base station also sends the pilot frequency through the auxiliary antenna, and the OVSF of the pilot frequency is notified by the base station by signaling. User equipment.
发明人在研究现有技术的过程中发现, 在配置为主辅导频模式的小区内, 若用户设备不支持多入多出 ( Multiple Input Multiple Output, MIMO ), 无法接 收到基站发送的信令, 从而无法获得本小区的辅导频的 OVSF, 因而无法消除 来自基站辅天线的干扰。  In the process of studying the prior art, the inventor finds that, in a cell configured for the primary mode, if the user equipment does not support multiple input multiple output (MIMO), the signaling sent by the base station cannot be received. Therefore, the OVSF of the tuner frequency of the own cell cannot be obtained, and thus the interference from the secondary antenna of the base station cannot be eliminated.
如果邻小区配置为主辅导频模式,那么本小区的用户设备无法获得邻小区 的辅导频的 OVSF, 因而无法消除来自邻小区基站辅天线的干扰。  If the neighboring cell is configured in the primary mode, the user equipment of the cell cannot obtain the OVSF of the neighboring cell, and thus the interference from the secondary antenna of the neighboring cell cannot be eliminated.
发明内容 Summary of the invention
本发明实施例提供一种可以使得不支持多入多出的用户设备获得正交可 变扩频因子码的方法以及用户设备。  The embodiments of the present invention provide a method and a user equipment that can obtain an orthogonal variable spreading factor code for a user equipment that does not support multiple input and multiple output.
为解决上述技术问题, 本发明实施例是通过以下技术方案来实现的: 本发明实施例提供的获得正交可变扩频因子码的方法, 包括:  To solve the above technical problem, the embodiment of the present invention is implemented by the following technical solutions: The method for obtaining an orthogonal variable spreading factor code provided by the embodiment of the present invention includes:
对接收信号进行解扰;  De-scrambling the received signal;
将解扰后的接收信号与第 2到 256种扩频因子为 256的正交可变扩频因子 码分别进行相关;  The descrambled received signal is correlated with the second to 256 orthogonal variable spreading factor codes having a spreading factor of 256;
对相关后的 255路信号分别进行长度为 256的相关值累加; 对相关值累加后的 255路信号分别进行长度为第一预设值的累加平均; 分别获得 255路第一预设值累加平均后的信号的能量,将获得的 255路能 量信号分别进行长度为第二预设值的累加平均; Accumulating correlation values of length 256 for the associated 255 signals; The 255 signals accumulated after the correlation values are respectively subjected to an accumulated average of the first preset value; respectively, the energy of the 255 channels of the first preset value is obtained, and the obtained 255 energy signals are respectively lengthened. The cumulative average of the second preset values;
根据 255 路第二预设值累加平均后的能量信号获得辅导频的正交可变扩 频因子码。  The orthogonal variable spreading factor code of the tuner frequency is obtained by accumulating the averaged energy signal according to the 255 second preset value.
本发明实施例还提供一种获得正交可变扩频因子码的方法, 其包括: 对接收信号进行解扰; 相关, 所述 k为正整数;  An embodiment of the present invention further provides a method for obtaining an orthogonal variable spreading factor code, including: descrambling a received signal; and correlating, the k is a positive integer;
对相关后的 k路信号分别进行长度为 k的相关值累加;  Accumulating correlation values of length k for the correlated k-channel signals;
对相关值累加后的 k路信号分别进行长度为第三预设值的累加平均; 分别获得 k路第三预设值累加平均后的信号的能量,将获得的 k路能量信 号分别进行长度为第四预设值的累加平均;  The k-channel signals accumulated by the correlation values are respectively subjected to an accumulated average of the third preset value; respectively, the energy of the signal obtained by accumulating and averaging the third preset value of the k-channel is obtained, and the obtained k-channel energy signals are respectively lengthened as The cumulative average of the fourth preset value;
根据 k路第四预设值累加平均后的能量信号获得生成辅导频的正交可变 扩频因子码且扩频因子为 k的第一正交可变扩频因子码;  Obtaining an averaged energy signal according to a fourth preset value of the kth path to obtain a first orthogonal variable spreading factor code that generates an orthogonal variable spreading factor code of the tuner frequency and a spreading factor of k;
将所述第一正交可变扩频因子码生成的扩频因子为 256 的正交可变扩频 因子中第 2到第 256/k个正交可变扩频因子码分别与所述解扰后的接收信号进 行相关;  Generating, by the first orthogonal variable spreading factor code, a second to 256/k orthogonal variable spreading factor codes of orthogonal variable spreading factors of 256 and the solution The received signal after the disturbance is correlated;
对相关后的 256/k- 1路信号分别进行长度为 256的相关值累加;  Accumulating correlation values of length 256 for the correlated 256/k-1 signals;
对相关值累加后的 256/k-l 路信号分别进行长度为第五预设值的累加平 均;  The 256/k-l signals accumulated after the correlation values are respectively accumulated and accumulated to a fifth preset value;
分别获得 256/k-l路第五预设值累加平均后的信号的能量, 将获得的能量 信号分别进行长度为第六预设值的累加平均;  Obtaining the energy of the signal after the averaging of the fifth preset value of 256/k-l, respectively, and performing the accumulated average of the length of the sixth preset value;
根据 256/k-l路第六预设值的累加平均后的能量信号获得辅导频的正交可 变扩频因子码。  The orthogonal variable spreading factor code of the tuner frequency is obtained according to the accumulated averaged energy signal of the sixth preset value of 256/k-l.
本发明实施例还提供一种用户设备, 其包括:  An embodiment of the present invention further provides a user equipment, including:
第一接收单元 , 用于对接收信号进行解扰;  a first receiving unit, configured to descramble the received signal;
第一相关单元, 用于将解扰后的接收信号与第 2到 256种扩频因子为 256 的正交可变扩频因子码分别进行相关; 第一相关值累加单元, 用于对相关后的 255 路信号分别进行长度为 256 的相关值累加; a first correlation unit, configured to correlate the descrambled received signal with the second to 256 orthogonal variable spreading factor codes having a spreading factor of 256; The first correlation value accumulating unit is configured to accumulate correlation values of length 256 for the related 255 signals respectively;
第一累加平均单元,用于对相关值累加后的 255路信号分别进行长度为第 一预设值的累加平均;  The first accumulated averaging unit is configured to perform an accumulated average of the first preset value for the 255 channels after the correlation value is accumulated;
第一获得单元, 用于分别获得 255 路第一预设值累加平均后的信号的能 量;  a first obtaining unit, configured to respectively obtain energy of a signal obtained by cumulatively averaging 255 first preset values;
第二累加平均单元,用于将获得的 255路能量信号分别进行长度为第二预 设值的累加平均;  a second accumulated averaging unit, configured to perform the cumulative average of the obtained 255 energy signals for the second preset value;
第二获得单元,用于根据 255路第二预设值累加平均后的能量信号获得辅 导频的正交可变扩频因子码。  And a second obtaining unit, configured to obtain an orthogonal variable spreading factor code of the auxiliary pilot according to the 255 channel second preset value accumulated and averaged energy signals.
本发明实施例还提供一种用户设备, 其包括:  An embodiment of the present invention further provides a user equipment, including:
第二接收单元, 用于对接收信号进行解扰;  a second receiving unit, configured to descramble the received signal;
第二相关单元,用于将解扰后的接收信号与 k种扩频因子为 k的正交可变 扩频因子码分别进行相关, 所述 k为正整数;  a second correlation unit, configured to correlate the descrambled received signal with k orthogonal transform spread factor codes having a spreading factor of k, wherein the k is a positive integer;
第二相关值累加单元,用于对相关后的 k路信号分别进行长度为 k的相关 值累加;  a second correlation value accumulating unit for accumulating correlation values of length k for the correlated k-channel signals;
第三累加平均单元,用于对相关值累加后的 k路信号分别进行长度为第三 预设值的累加平均;  a third accumulated averaging unit, configured to perform an accumulated average of a third preset value for the k-channel signals accumulated by the correlation values;
第三获得单元, 用于分别获得 k路第三预设值累加平均后的信号的能量; 第四累加平均单元,用于将获得的 k路能量信号分别进行长度为第四预设 值的累加平均;  a third obtaining unit, configured to respectively obtain the energy of the signal obtained by accumulating the average of the k-th third preset value; and the fourth accumulating averaging unit is configured to separately accumulate the obtained k-way energy signals to a fourth preset value Average
第四获得单元,用于根据 k路第四预设值累加平均后的能量信号获得生成 辅导频的正交可变扩频因子码且扩频因子为 k的第一正交可变扩频因子码; 所述第二相关单元还用于将所述第一正交可变扩频因子码生成的扩频因 子为 256的正交可变扩频因子中第 2到第 256/k个正交可变扩频因子分别与所 述解扰后的接收信号进行相关;  a fourth obtaining unit, configured to obtain, according to the accumulated energy signal of the fourth preset value of the k path, a first orthogonal variable spreading factor that generates an orthogonal variable spreading factor code of the tuner frequency and a spreading factor of k The second correlation unit is further configured to use the first orthogonal variable spreading factor code to generate a spreading factor of 256 to the 256th to the 256th orthogonal orthogonal spreading factors The variable spreading factor is respectively correlated with the descrambled received signal;
所述第二相关值累加单元还用于对相关后的 256/k-l路信号分别进行长度 为 256的相关值累加;  The second correlation value accumulating unit is further configured to accumulate correlation values of length 256 for the correlated 256/k-1 channel signals respectively;
所述第三累加平均单元还用于对相关值累加后的 256/k-l路信号分别进行 长度为第五预设值的累加平均; The third accumulated averaging unit is further configured to separately perform 256/kl road signals after the correlation values are accumulated. The cumulative average of the fifth preset value;
所述第三获得单元还用于分别获得 256/k-l路第五预设值累加平均后的信 号的能量, 将获得的能量信号分别进行长度为第六预设值的累加平均;  The third obtaining unit is further configured to obtain the energy of the signal after the 256/k-l fifth preset value is accumulated and averaged, and respectively perform the accumulated energy averages of the sixth preset value;
所述第四获得单元还用于根据 256/k- 1路第六预设值的累加平均后的能量 信号获得辅导频的正交可变扩频因子码。  The fourth obtaining unit is further configured to obtain an orthogonal variable spreading factor code of the tuner frequency according to the accumulated averaged energy signal of the sixth preset value of 256/k-1.
本发明实施例通过将解扰后的信号与 255种扩频因子为 256的 OVSF进行 相关并进行相关值累加,可以使得其它信道的干扰得到一定程度的抵消,从而 使得辅导频发送固定符号的性质得到增强,相关值累加后的信号能量更大,进 而可以根据第二预设值累加平均后的能量信号来获得辅导频的 OVSF码,使得 不支持多入多出的用户设备可以根据接收到的信号获得辅导频的 OVSF码。 附图说明  In the embodiment of the present invention, by correlating the descrambled signal with 255 OVSFs with a spreading factor of 256 and accumulating the correlation values, the interference of other channels can be cancelled to a certain extent, so that the nature of the fixed symbol is transmitted by the tuner frequency. Obtained, the signal energy after the correlation value is accumulated is larger, and the OVSF code of the tuner frequency can be obtained by accumulating the averaged energy signal according to the second preset value, so that the user equipment that does not support multiple input and multiple output can be received according to the received The signal obtains the OVSF code of the tuner frequency. DRAWINGS
为了更清楚地说明本发明实施例中的技术方案,下面将对现有技术和实施 例中所需要使用的附图作简单地介绍,显而易见地, 下面描述中的附图仅仅是 本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的 前提下, 还可以根据这些附图获得其它的附图。  In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the prior art and the embodiments will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative work.
图 1是本发明实施例一提供的获得正交可变扩频因子码的方法流程图; 图 2是本发明实施例二提供的获得正交可变扩频因子码的方法流程图; 图 3是本发明实施例三提供的用户设备的结构示意图;  1 is a flowchart of a method for obtaining an orthogonal variable spreading factor code according to Embodiment 1 of the present invention; FIG. 2 is a flowchart of a method for obtaining an orthogonal variable spreading factor code according to Embodiment 2 of the present invention; Is a schematic structural diagram of a user equipment provided by Embodiment 3 of the present invention;
图 4是本发明实施例四提供的用户设备的结构示意图。  FIG. 4 is a schematic structural diagram of a user equipment according to Embodiment 4 of the present invention.
具体实施方式 detailed description
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是 全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造 性劳动前提下所获得的所有其它实施例, 都属于本发明保护的范围。  BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.
本发明提供了一种获得正交可变扩频因子码的方法和用户设备。为了更好 的理解本发明的技术方案 ,下面结合附图对本发明提供的实施例进行详细地描 述。  The present invention provides a method and user equipment for obtaining an orthogonal variable spreading factor code. In order to better understand the technical solutions of the present invention, the embodiments provided by the present invention will be described in detail below with reference to the accompanying drawings.
参见图 1, 图 1是本发明实施例一提供的获得正交可变扩频因子码的方法 的流程图。 在本发明实施例中, 用户设备接收基站发射的信号,基站发射的信号中插 进行扩频, 本发明实施例提供的获得正交可变扩频因子码的方法可以包括:Referring to FIG. 1, FIG. 1 is a flowchart of a method for obtaining an orthogonal variable spreading factor code according to Embodiment 1 of the present invention. In the embodiment of the present invention, the user equipment receives the signal transmitted by the base station, and the signal transmitted by the base station is inserted into the signal for spreading. The method for obtaining the orthogonal variable spreading factor code provided by the embodiment of the present invention may include:
101、 对接收信号进行解扰。 101. De-scramble the received signal.
具体的, 用户设备对接收到的信号进行解扰。  Specifically, the user equipment descrambles the received signal.
102、 将解扰后的接收信号与第 2到 256种扩频因子为 256的正交可变扩 频因子码分别进行相关。  102. Correlate the descrambled received signal with the second to 256 orthogonal variable spreading factor codes having a spreading factor of 256.
具体的, 用户设备将解扰后的接收信号与第 2到 256种扩频因子为 256 的正交可变扩频因子码分别进行相关, 得到 255路相关后的信号。  Specifically, the user equipment correlates the descrambled received signal with the second to 256 orthogonal variable spreading factor codes having a spreading factor of 256, to obtain 255 related signals.
在本发明实施例中,第 1种扩频因子为 256的正交可变扩频因子码为主导 频在发射端进行扩频时使用的正交可变扩频因子码。  In the embodiment of the present invention, the first orthogonal variable spreading factor code having a spreading factor of 256 is an orthogonal variable spreading factor code used when the pilot frequency is spread at the transmitting end.
103、 对相关后的 255路信号分别进行长度为 256的相关值累加。  103. Accumulate correlation values of length 256 for the associated 255 signals.
具体的,用户设备可以对相关后的 255路信号分别进行长度为 256的相关 值累加, 从而实现对 SF=256的正交可变扩频因子码的解扩。  Specifically, the user equipment may accumulate correlation values of length 256 for the associated 255 signals, thereby implementing despreading of the orthogonal variable spreading factor code of SF=256.
104、 对相关值累加后的 255路信号分别进行长度为第一预设值的累加平 均。  104. The 255 signals accumulated after the correlation values are respectively accumulated and accumulated to the first preset value.
具体的,用户设备对相关值累加后的 255路信号分别进行长度为第一预设 值的累加平均。 其中, 累加平均的目的是提高接收信号的质量, 第一预设值可 以根据信道变化快慢来确定, 若信道变化越快则第一预设值越小,信道变化越 慢, 则第一预设值越大。  Specifically, the 255 channels of the user equipment accumulating the correlation values respectively perform an accumulated average of the first preset value. The purpose of the accumulated average is to improve the quality of the received signal. The first preset value may be determined according to the speed of the channel change. If the channel change is faster, the first preset value is smaller, and the channel change is slower, the first preset is The value is larger.
105、分别获得 255路第一预设值累加平均后的信号的能量,将获得的 255 路能量信号分别进行长度为第二预设值的累加平均。  105. Obtain the energy of the 255 channel first preset value cumulatively averaged, and respectively obtain the 255 energy signals to perform an accumulated average of the second preset value.
具体的, 用户设备分别获得 255路第一预设值累加平均后的信号的能量, 然后将获得的 255路能量信号分别进行长度为第二预设值的累加平均。  Specifically, the user equipment obtains the energy of the 255 channel first preset value accumulated and averaged, and then obtains the accumulated 255 energy signals into an accumulated average of the second preset value.
其中, 本发明实施例进行累加平均可以降低信号中噪声能量的变化范围, 降低噪声对最终的判决结果的影响。第二预设值可以根据具体的实施代价来确 定, 若需要获得更精确的正交可变扩频因子码, 则设置较大的第二预设值。  Wherein, the cumulative averaging of the embodiment of the invention can reduce the variation range of the noise energy in the signal, and reduce the influence of the noise on the final decision result. The second preset value may be determined according to a specific implementation cost. If a more accurate orthogonal variable spreading factor code is required, a larger second preset value is set.
106、 根据 255路第二预设值累加平均后的能量信号获得辅导频的正交可 变扩频因子码。 具体的,用户设备根据 255路第二预设值累加平均后的能量信号获得辅导 频的正交可变扩频因子码。 106. Acquire an orthogonal variable spreading factor code of the tuner frequency according to the 255 channel second preset value cumulatively averaging the energy signal. Specifically, the user equipment obtains the orthogonal variable spreading factor code of the tuner frequency according to the 255 channel second preset value accumulated and averaged energy signal.
在本发明实施例中, 由于 OVSF码之间是正交的,使用正确的 OVSF码对 解扰后信号进行解扩得到的信号会具有较高的能量, 另外, 由于辅导频发射的 是固定符号, 而除了主导频外其它信道发送的不是固定符号,本发明实施例通 加,可以使得其它信道的干扰得到一定程度的抵消,从而使得辅导频发送固定 符号的性质得到增强,相关值累加后的信号能量更大,进而可以根据第二预设 值累加平均后的能量信号来获得辅导频的 OVSF码,使得不支持多入多出的用 户设备可以根据接收到的信号获得辅导频的 OVSF码。  In the embodiment of the present invention, since the OVSF codes are orthogonal, the signal obtained by despreading the descrambled signal by using the correct OVSF code has higher energy, and in addition, since the tuner frequency is fixed symbol In addition to the fixed frequency, other channels are not fixed symbols, and the embodiments of the present invention can increase the interference of other channels to a certain extent, so that the nature of the fixed frequency of the supplementary frequency is enhanced, and the correlation values are accumulated. The signal energy is larger, and the OVSF code of the tuner frequency can be obtained by accumulating the averaged energy signal according to the second preset value, so that the user equipment that does not support multiple input and multiple output can obtain the OVSF code of the tuner frequency according to the received signal.
本发明实施例提供的获取正交可变扩频因子码的方法可以使用在当前小 区配置为主辅导频模式下, 此时不支持 MIMO的用户设备在获得本小区辅导 频的 OVSF之后, 可以根据辅导频的 OVSF消除基站辅天线的干扰。 另夕卜, 本 发明实施例还可以使用在邻小区配置为主辅导频模式的场景中,那么本小区的 用户设备获取的邻小区的辅导频的 OVSF, 从而 据邻小区的辅导频的 OVSF 消除邻小区基站辅天线的干扰。  The method for obtaining the orthogonal variable spreading factor code provided by the embodiment of the present invention may be used in the current cell configuration as the primary tuner frequency mode, and the user equipment that does not support MIMO may obtain the OVSF of the cell tuner frequency according to the OVSF of the cell. The OVSF of the tuner frequency eliminates the interference of the base station auxiliary antenna. In addition, the embodiment of the present invention may also be used in the scenario where the neighboring cell is configured as the primary tuner mode, and then the OVSF of the neighboring cell obtained by the user equipment of the cell is used, so that the OVSF of the neighboring cell is eliminated. Interference from the auxiliary antenna of the neighboring cell base station.
进一步的,本发明实施例一提供的获得正交可变扩频因子码的方法中,根 据 255 路第二预设值累加平均后的能量信号获得辅导频的正交可变扩频因子 码的步骤具体通过以下方式来实现:  Further, in the method for obtaining an orthogonal variable spreading factor code according to Embodiment 1 of the present invention, the orthogonal variable spreading factor code of the tuner frequency is obtained according to the 255 second preset value accumulated and averaged energy signals. The steps are specifically implemented in the following ways:
1 )若 255路第二预设值累加平均后的能量信号的当前值中的最大值 Ml 大于次大值 M2的第一预设倍数, 则获得最大值 Ml对应的正交可变扩频因子 码。  1) If the maximum value M1 of the current values of the 255-channel second preset value cumulatively averaged is greater than the first predetermined multiple of the next largest value M2, the orthogonal variable spreading factor corresponding to the maximum value M1 is obtained. code.
具体的,用户设备可以获得 255路第二预设值累加平均后的能量信号的当 前值中的最大值 Ml以及次大值 M2。 若最大值 Ml大于次大值 M2的第一预 因子码, 用户设备即可获得最大值 Ml对应的正交可变扩频因子码。  Specifically, the user equipment can obtain the maximum value M1 and the next largest value M2 of the current values of the 255 channels of the second preset value cumulatively averaged. If the maximum value M1 is greater than the first pre-factor code of the next largest value M2, the user equipment can obtain the orthogonal variable spreading factor code corresponding to the maximum value M1.
2 )连续获得预设 N个周期内 255路第二预设值累加平均后的能量信号的 N个最大值, 若 N个最大值中相同的最大值连续出现的次数大于或等于第一 预设次数,且相同的最大值对应的正交可变扩频因子码相同, 则获得最大值对 应的正交可变扩频因子码。 2) continuously obtaining N maximum values of the energy signals after the 255 channel second preset values are accumulated and averaged in the preset N periods, if the same maximum value of the N maximum values continuously appears is greater than or equal to the first preset The number of times, and the same maximum value corresponds to the same orthogonal variable spreading factor code, then the maximum value is obtained. The orthogonal variable spreading factor code should be used.
本发明实施例中,第一预设次数和第一预设倍数可以根据判决的准确度来 确定, 若要求本发明实施例获取的辅导频的正交可变扩频因子码的准确度较 高, 则设置较大的第一预设次数和第一预设倍数,反之设置较小的第一预设次 数和第一预设倍数。  In the embodiment of the present invention, the first preset number of times and the first preset multiple number may be determined according to the accuracy of the decision, and the accuracy of the orthogonal variable spreading factor code of the tuner frequency obtained by the embodiment of the present invention is required to be higher. And setting a larger first preset number and a first preset multiple, and vice versa setting a smaller first preset number and a first preset multiple.
需要指出的是,本发明实施例中根据 255路第二预设值累加平均后的能量 可以使用其它的方法。  It should be noted that, in the embodiment of the present invention, other methods may be used to accumulate the averaged energy according to the 255 second preset value.
在本发明实施例中,在获得辅导频的正交可变扩频因子码之后,可以根据 辅导频的正交可变扩频因子码对接收信号进行加扰解扩,并对解扰解扩后的信 号进行信道估计 , 从而消除基站辅天线发射的信号产生的干扰。  In the embodiment of the present invention, after obtaining the orthogonal variable spreading factor code of the tuner frequency, the received signal may be scrambled and despread according to the orthogonal variable spreading factor code of the tuner frequency, and the descrambling and despreading is performed. The latter signal is subjected to channel estimation, thereby eliminating interference generated by signals transmitted by the base station auxiliary antenna.
为更伴细的理解本发明实施例,下面给出根据获得的辅导频的正交可变扩 频因子码来消除基站辅天线发射的信号产生的干扰的具体推导过程。  For a more detailed understanding of the embodiments of the present invention, a specific derivation process for canceling the interference generated by the signal transmitted by the base station auxiliary antenna according to the obtained orthogonal variable spreading factor code of the pilot frequency is given below.
用户设备接收信号可以表示为:  The user equipment receives the signal and can be expressed as:
κ  κ
r = Hx + ^H x + n  r = Hx + ^H x + n
z=l 其中, r是接收信号, X是期望信号, H是期望信号的信道, xi为干扰信 号, Hi干扰信号的信道, n是高斯白噪声。 那么线性最小均方误差 ( Linear Minimum Mean Square Error, LMMSE ) 算法均衡矢量可以表示为:  z = l where r is the received signal, X is the desired signal, H is the channel of the desired signal, xi is the interference signal, the channel of the Hi interference signal, and n is the Gaussian white noise. Then the Linear Minimum Mean Square Error (LMMSE) algorithm equalization vector can be expressed as:
= H H ΗΗ¾ + Η^σ^ + σ„2Ι 其中, 为期望信号功率, 为第 i个干扰信号功率, σ "为噪声功率。 Rxy是发送信号和接收信号的互相关矩阵, Ryy是接收信号的自相关矩阵, HH 是信道估计矩阵的共轭转置矩阵, I代表单位阵。 由于信道估计矩阵是通过导频得到的,只有知道了导频的 OVSF才能对正 确地对导频进行解扰解扩, 进而信道估计, 进而求得均衡矢量进行干扰消除。 = HH ΗΗ3⁄4 + Η^σ^ + σ„ 2 Ι where, for the desired signal power, the ith interference signal power, σ "is the noise power. Rxy is a cross-correlation matrix of the transmitted signal and the received signal, Ryy is the autocorrelation matrix of the received signal, HH is the conjugate transposed matrix of the channel estimation matrix, and I represents the unit matrix. Since the channel estimation matrix is obtained by the pilot, only the OVSF that knows the pilot can correctly despread and despread the pilot, and then estimate the channel, and then obtain the equalization vector for interference cancellation.
本发明实施例使用均衡矢量对接收信号进行滤波,滤波后的信号为 y=wr, 即消除干扰后的信号。  In the embodiment of the present invention, the received signal is filtered by using an equalization vector, and the filtered signal is y=wr, that is, the signal after the interference is eliminated.
实施例二  Embodiment 2
参见图 2, 图 2是本发明实施例二提供的获得正交可变扩频因子码的方法 流程图。  Referring to FIG. 2, FIG. 2 is a flowchart of a method for obtaining an orthogonal variable spreading factor code according to Embodiment 2 of the present invention.
在本发明实施例二提供的获得正交可变扩频因子码的方法可以包括: The method for obtaining an orthogonal variable spreading factor code provided in Embodiment 2 of the present invention may include:
201、 对接收信号进行解扰。 201. Perform descrambling on the received signal.
具体的, 步骤 201的执行过程和上述实施例一中的步骤 101相同,详情参 见上述实施例一。  Specifically, the execution process of step 201 is the same as step 101 in the first embodiment. For details, refer to the first embodiment.
202、 将解扰后的接收信号与 k种扩频因子为 k的正交可变扩频因子码分 别进行相关, k为正整数。  202. Correlate the descrambled received signal with k orthogonal variable spreading factor codes with a spreading factor of k, where k is a positive integer.
在本发明实施例中, 用户设备将解扰后的接收信号与 k种扩频因子为 k 的正交可变扩频因子码分别进行相关, k为正整数, 得到 k路相关后的信号。 其中, 扩频因子 k可以取 2、 4、 8、 16、 32、 64或 128。  In the embodiment of the present invention, the user equipment correlates the descrambled received signal with k orthogonal variable spreading factor codes having a spreading factor of k, and k is a positive integer, and obtains a k-path correlated signal. Wherein, the spreading factor k can be 2, 4, 8, 16, 32, 64 or 128.
203、 对相关后的 k路信号分别进行长度为 k的相关值累加。  203. Accumulate correlation values of length k for the correlated k-channel signals.
具体的, 用户设备对相关后的 k路信号分别进行长度为 k的相关值累加, 从而实现对 SF=k的正交可变扩频因子码的解扩。  Specifically, the user equipment accumulates correlation values of length k for the associated k-channel signals, thereby implementing despreading of the orthogonal variable spreading factor code of SF=k.
204、对相关值累加后的 k路信号分别进行长度为第三预设值的累加平均。 具体的 ,用户设备对相关值累加后的 k路信号分别进行长度为第三预设值 的累加平均。 其中, 累加平均的目的是提高接收信号的质量。 第三预设值可以 根据信道变化快慢来确定,若信道变化越快则第三预设值越小,信道变化越慢, 则第三预设值越大。  204. The k-channel signals accumulated by the correlation values are respectively subjected to an accumulated average of the third preset value. Specifically, the k-channel signal accumulated by the user equipment for the correlation value is respectively subjected to an accumulated average of the third preset value. Among them, the purpose of accumulating the average is to improve the quality of the received signal. The third preset value may be determined according to the channel change speed. If the channel change is faster, the third preset value is smaller, and the channel change is slower, the third preset value is larger.
205、 分别获得 k路第三预设值累加平均后的信号的能量, 将获得的 k路 能量信号分别进行长度为第四预设值的累加平均。  205. Acquire energy of the signal obtained by accumulating and averaging the third preset value of the k-channel, respectively, and perform the cumulative average of the k-way energy signals with the length of the fourth preset value.
具体的, 用户设备可以分别获得 k路第三预设值累加平均后的信号的能 量, 将获得的 k路能量信号分别进行长度为第四预设值的累加平均。  Specifically, the user equipment can obtain the energy of the signal accumulated and averaged by the third preset value of the k-channel, and respectively obtain the accumulated energy of the k-way energy signal with the length of the fourth preset value.
其中,进行累加平均可以降低信号中噪声能量的变化范围, 降低噪声对最 终的判决结果的影响。 第四预设值可以根据具体的实施代价来确定, 若需要获 得更精确的正交可变扩频因子码, 则设置较大的第四预设值。 Among them, the cumulative average can reduce the variation range of noise energy in the signal, and reduce the noise to the most The impact of the final judgment result. The fourth preset value may be determined according to a specific implementation cost. If a more accurate orthogonal variable spreading factor code is needed, a larger fourth preset value is set.
206、 根据 k路第四预设值累加平均后的能量信号获得满足第二预设条件 的第一正交可变扩频因子码。  206. Acquire, according to the fourth preset value of the kth path, the first orthogonal variable spreading factor code that satisfies the second preset condition.
在本发明实施例中,由于辅导频发送的是固定的符号且 OVSF码之间是正 交的。通过将接收信号与 k种扩频因子为 k的 OVSF码进行相关和相关值累加, 使得其它信道使用的 OVSF码对辅导频的干扰减小,因而辅导频发送固定符号 的性质得到增强, 进而可以根据第二预设值累加平均后的能量信号来获得 OVSF码树上生成辅导频 OVSF码的 SF=k的 OVSF码。  In the embodiment of the present invention, since the tuner frequency is transmitted, the symbols are orthogonal and the OVSF codes are orthogonal. By correlating the received signal with the OVSF codes of k kinds of spreading factors k, and accumulating the correlation values, the interference of the OVSF codes used by other channels to the tuner frequency is reduced, and thus the nature of the fixed frequency of the supplementary frequency transmission is enhanced, and thus The OVSF code of the SF=k generating the tuner frequency OVSF code on the OVSF code tree is obtained by accumulating the averaged energy signal according to the second preset value.
在本发明实施例中,在执行步骤 206后, 即可获知辅导频的 OVSF码的范 围是第一正交可变扩频因子码所生成的 SF=265中的正交可变扩频因子码。  In the embodiment of the present invention, after performing step 206, it can be known that the range of the OVSF code of the tuner frequency is the orthogonal variable spreading factor code in the SF=265 generated by the first orthogonal variable spreading factor code. .
207、 将第一正交可变扩频因子码生成的扩频因子为 256的正交可变扩频 因子码中第 2到第 256/k个正交可变扩频因子码分别与解扰后的接收信号进行 相关。  207. The second to the 256th/k orthogonal variable spreading factor codes in the orthogonal variable spreading factor code with a spreading factor of 256 generated by the first orthogonal variable spreading factor code and the descrambling respectively The received signal is correlated.
其中,第一正交可变扩频因子码生成的扩频因子为 256的正交可变扩频因 子码的数量为 256/k, 用户设备将 256/k个 SF-256的正交可变扩频因子码中第 2到第 256/k个正交可变扩频因子码分别与解扰后的接收信号进行相关。另外, 256/k表示 256除以 k, "/,, 表示除号。 频因子码。  The number of orthogonal variable spreading factor codes with a spreading factor of 256 generated by the first orthogonal variable spreading factor code is 256/k, and the user equipment will orthogonally variable 256/k SF-256. The 2nd to 256th/kth orthogonal variable spreading factor codes in the spreading factor code are respectively correlated with the descrambled received signal. In addition, 256/k means 256 divided by k, "/,, represents the division number. Frequency factor code.
208、 对相关后的 256/k-l路信号分别进行长度为 256的相关值累加。 在本发明实施例中, 进行相关值累加后可以实现对 SF=256的正交可变扩 频因子码的解扩。 其中, 256/k-l表示 256除以 k的商减 1。  208. Accumulate correlation values of length 256 for the correlated 256/k-l channels respectively. In the embodiment of the present invention, the despreading of the orthogonal variable spreading factor code of SF=256 can be implemented after the correlation value is accumulated. Where 256/k-l represents the quotient minus 1 of 256 divided by k.
209、对相关值累加后的 256/k-l路信号分别进行长度为第五预设值的累加 平均。  209. Perform an accumulated average of the fifth preset value for the 256/k-l signal accumulated by the correlation value.
用户设备对相关值累加后的 256/k-l路信号分别进行长度为第五预设值的 累加平均。 其中, 累加平均的目的是提高接收信号的质量, 第五预设值可以根 据信道变化快慢来确定, 若信道变化越快则第五预设值越小, 信道变化越慢, 则第五预设值越大。 210、分别获得 256/k-l路第五预设值累加平均后的信号的能量,将获得的 能量信号分别进行长度为第六预设值的累加平均。 The 256/kl channel signals accumulated by the user equipment for the correlation values are respectively subjected to an accumulated average of the fifth preset value. The purpose of the accumulated average is to improve the quality of the received signal. The fifth preset value may be determined according to the speed of the channel change. If the channel change is faster, the fifth preset value is smaller, and the channel change is slower, the fifth preset is The value is larger. 210. Obtain the energy of the signal after the averaging of the fifth preset value of the 256/kl road, and respectively obtain the energy signals to perform the cumulative average of the sixth preset value.
其中,进行累加平均可以降低信号中噪声能量的变化范围, 降低噪声对最 终的判决结果的影响。 第六预设值可以根据具体的实施代价来确定, 若需要获 得更精确的正交可变扩频因子码, 则设置较大的第六预设值。  Among them, performing the cumulative averaging can reduce the variation range of the noise energy in the signal and reduce the influence of noise on the final decision result. The sixth preset value may be determined according to a specific implementation cost. If a more accurate orthogonal variable spreading factor code is required, a larger sixth preset value is set.
211、根据 256/k-l路第六预设值的累加平均后的能量信号获得辅导频的正 交可变扩频因子码。  211. Obtain a orthogonal variable spreading factor code of the tuner frequency according to the accumulated average energy signal of the sixth preset value of 256/k-l.
具体的, 用户设备可以获得 256/k-l路第六预设值累加平均后的能量信号 的当前值中的最大值 L1 以及次大值 L2, 若 L1大于 L2的第二预设倍数, 则 码, 用户设备获得最大值 L1对应的正交可变扩频因子码。  Specifically, the user equipment can obtain the maximum value L1 and the second largest value L2 of the current value of the energy signal after the 256/kl way sixth preset value is accumulated and averaged, and if L1 is greater than the second preset multiple of L2, the code, The user equipment obtains an orthogonal variable spreading factor code corresponding to the maximum value L1.
另夕卜,本发明实施例在执行步骤 211时还可以连续获得预设 N个周期内 k 路第四预设值累加平均后的能量信号的 N个最大值, N为大于 1的整数。若 N 个最大值中相同的最大值连续出现的次数大于或等于第二预设次数,且相同的 最大值对应的正交可变扩频因子码相同,则该最大值对应的正交可变扩频因子 码为辅导频的正交可变扩频因子码,用户设备获得相同的最大值对应的扩频因 子为 k的第一正交可变扩频因子码。  In addition, when performing step 211, the embodiment of the present invention may further obtain N maximum values of the energy signals accumulated and averaged by the fourth preset value of the k-channel in the preset N periods, where N is an integer greater than 1. If the number of consecutive occurrences of the same maximum of the N maximum values is greater than or equal to the second predetermined number of times, and the orthogonal variable spreading factor codes corresponding to the same maximum value are the same, the orthogonal variable corresponding to the maximum value The spreading factor code is an orthogonal variable spreading factor code of the tuner frequency, and the user equipment obtains a first orthogonal variable spreading factor code with a spreading factor of k corresponding to the same maximum value.
在本发明实施例中, 由于 OVSF码之间是正交的,使用正确的 OVSF码对 解扰后信号进行解扩得到的信号会具有较高的能量, 另外, 由于辅导频发射的 是固定符号, 而除了主导频外其它信道发送的不是固定符号,本发明实施例通 过将解扰后的信号与 256/k-l种扩频因子为 256的 OVSF进行相关并进行相关 值累加,可以使得其它信道的干扰得到一定程度的抵消,从而使得辅导频发送 固定符号的性质得到增强,相关值累加后的信号能量更大,进而可以才 据第二 预设值累加平均后的能量信号来获得辅导频的 OVSF码,使得不支持多入多出 的用户设备可以根据接收到的信号获得辅导频的 OVSF码。  In the embodiment of the present invention, since the OVSF codes are orthogonal, the signal obtained by despreading the descrambled signal by using the correct OVSF code has higher energy, and in addition, since the tuner frequency is fixed symbol In the embodiment of the present invention, the descrambled signal is correlated with 256/kl OVSF with a spreading factor of 256 and the correlation value is accumulated, so that other channels can be made. The interference is offset to a certain extent, so that the nature of the fixed frequency of the tuner frequency transmission is enhanced, and the signal energy of the correlation value is increased, and the OVSF of the tuner frequency can be obtained by accumulating the averaged energy signal according to the second preset value. The code enables the user equipment that does not support multiple input and multiple output to obtain the OVSF code of the tuner frequency according to the received signal.
相对于本发明实施例一,本发明实施例二需要对解扰后的信号与正交可变 扩频因子码相关的次数为 k-l+256/k次, 相对于实施例一中需要进行 255次相 关相比 ,本发明实施例二提供的获取辅导频的正交可变扩频因子码的实现代价 较小。 进一步的, 在本发明实施例二提供的获得正交可变扩频因子码的方法中, 上述根据 k路第四预设值累加平均后的能量信号获得满足第二预设条件的第 一正交可变扩频因子码(步骤 206 )具体可以通过如下方式来实现: With respect to the first embodiment of the present invention, the number of times that the descrambled signal and the orthogonal variable spreading factor code are related is k-l+256/k times, which is required in the first embodiment. Compared with the 255 correlations, the implementation of the orthogonal variable spreading factor code for obtaining the tuner frequency provided by the second embodiment of the present invention is relatively inexpensive. Further, in the method for obtaining an orthogonal variable spreading factor code provided by the second embodiment of the present invention, the energy signal obtained by accumulating and averaging according to the fourth preset value of the k road obtains the first positive condition that satisfies the second preset condition. The variable spreading factor code (step 206) can be specifically implemented as follows:
1 )若1^路第四预设值累加平均后的能量信号的当前值中的最大值 L1大于 次大值 L2的第二预设倍数, 则获得最大值 L1对应的扩频因子为 k的第一正 交可变扩频因子码。  1) If the maximum value L1 of the current value of the energy signal after the fourth preset value of the 1^ way is greater than the second predetermined multiple of the next largest value L2, the spreading factor corresponding to the maximum value L1 is obtained as k A first orthogonal variable spreading factor code.
具体的,用户设备可以获得 k路第二预设值累加平均后的能量信号的当前 值中的最大值 L1 以及次大值 L2。 若最大值 L1大于次大值 L2的第二预设倍 码, 用户设备即可获得最大值 L1对应的正交可变扩频因子码。  Specifically, the user equipment can obtain the maximum value L1 and the next largest value L2 in the current value of the energy signal after the second preset value of the k-way is cumulatively averaged. If the maximum value L1 is greater than the second predetermined multiple of the next largest value L2, the user equipment can obtain the orthogonal variable spreading factor code corresponding to the maximum value L1.
2 )连续获得预设 N个周期内 k路第四预设值累加平均后的能量信号的 N 个最大值, 若 N个最大值中相同的最大值连续出现的次数大于或等于第二预 设次数,且相同的最大值对应的正交可变扩频因子码相同, 则获得相同的最大 值对应的扩频因子为 k的第一正交可变扩频因子码, N为大于 1的整数。  2) continuously obtaining N maximum values of the energy signals accumulated and averaged by the fourth preset value of the k-channel in the preset N periods, if the same maximum number of consecutive occurrences of the N maximum values is greater than or equal to the second preset If the number of times and the same maximum value correspond to the orthogonal variable spreading factor codes, obtain the first orthogonal variable spreading factor code with the same maximum value and the spreading factor k, and N is an integer greater than 1. .
本发明实施例中 ,第二预设次数可以根据和第二预设倍数可以根据判决的 准确度来确定,若要求本发明实施例获取的辅导频的正交可变扩频因子码的准 确度较高, 则设置较大的第二预设次数和第二预设倍数,反之设置较小的第二 预设次数和第二预设倍数。  In the embodiment of the present invention, the second preset number of times may be determined according to the accuracy of the decision according to the second preset multiple, and the accuracy of the orthogonal variable spreading factor code of the tuner frequency obtained by the embodiment of the present invention is required. If it is higher, a larger second preset number and a second preset multiple are set, and a smaller second preset number and a second preset multiple are set.
需要指出的是,本发明实施例中根据 k路第四预设值累加平均后的能量信 以使用其它的方法。  It should be noted that in the embodiment of the present invention, the energy signals accumulated by the fourth preset value of the k-way are used to use other methods.
以上对本发明实施例提供的获得正交可变扩频因子码的方法进行了详细 介绍, 下面再给出和本发明方法实施例对应的装置。  The method for obtaining the orthogonal variable spreading factor code provided by the embodiment of the present invention is described in detail above, and the device corresponding to the embodiment of the method of the present invention is further given below.
实施例三  Embodiment 3
参见图 3 , 图 3是本发明实施例三提供的用户设备的结构示意图。  Referring to FIG. 3, FIG. 3 is a schematic structural diagram of a user equipment according to Embodiment 3 of the present invention.
本发明实施例三提供的用户设备包括:  The user equipment provided in Embodiment 3 of the present invention includes:
第一接收单元 301 , 用于对接收信号进行解扰;  The first receiving unit 301 is configured to perform descrambling on the received signal.
第一相关单元 302, 用于将解扰后的接收信号与第 2到 256种扩频因子为 256的正交可变扩频因子码分别进行相关; 第一相关值累加单元 303 ,用于对相关后的 255路信号分别进行长度为 256 的相关值累加; a first correlation unit 302, configured to separately correlate the descrambled received signal with the second to 256 orthogonal variable spreading factor codes having a spreading factor of 256; The first correlation value accumulating unit 303 is configured to accumulate correlation values of length 256 for the related 255 channels, respectively;
第一累加平均单元 304, 用于对相关值累加后的 255路信号分别进行长度 为第一预设值的累加平均;  The first accumulated averaging unit 304 is configured to perform an accumulated average of the first preset value for the 255 channels after the correlation value is accumulated;
第一获得单元 305, 用于分别获得 255路第一预设值累加平均后的信号的 The first obtaining unit 305 is configured to obtain, respectively, 255 channels of the first preset value accumulated and averaged signals
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第二累加平均单元 306, 用于将获得的 255路能量信号分别进行长度为第 二预设值的累加平均;  The second accumulated averaging unit 306 is configured to perform the cumulative average of the obtained 255 energy signals for the second preset value;
第二获得单元 307, 用于根据 255路第二预设值累加平均后的能量信号获 得辅导频的正交可变扩频因子码。  The second obtaining unit 307 is configured to obtain an orthogonal variable spreading factor code of the tuner frequency according to the 255 channel second preset value accumulated and averaged energy signals.
本发明实施例三提供的用户设备可以使用在前述对应的实施例一提供的 获得正交可变扩频因子码的方法中,详细执行过程参见上述方法实施例,在此 不再重复描述。  The user equipment provided in the third embodiment of the present invention may be used in the method for obtaining the orthogonal variable spreading factor code provided in the foregoing corresponding embodiment. For the detailed execution process, refer to the foregoing method embodiment, and the description is not repeated herein.
进一步的,在本发明实施例三提供的用户设备中, 第二获得单元 307根据 255路第二预设值累加平均后的能量信号获得辅导频的正交可变扩频因子码 , 包括:  Further, in the user equipment provided in the third embodiment of the present invention, the second obtaining unit 307 obtains the orthogonal variable spreading factor code of the tuner frequency according to the 255 channel second preset value accumulated and averaged energy signals, including:
第二获得单元 307具体用于在 k路第四预设值累加平均后的能量信号的当 前值中的最大值 Ml 大于次大值 M2的第一预设倍数时, 则获得所述最大值 Ml对应的扩频因子为 k的第一正交可变扩频因子码; 或者, 连续获得预设 N 个周期内 k路第四预设值累加平均后的能量信号的 N个最大值, 若 N个最大 值中相同的最大值连续出现的次数大于或等于第一预设次数,且所述相同的最 大值对应的正交可变扩频因子码相同,则获得所述相同的最大值对应的扩频因 子为 k的第一正交可变扩频因子码, 所述 N为大于 1的正整数。  The second obtaining unit 307 is specifically configured to obtain the maximum value M1 when the maximum value M1 of the current values of the energy signals after the averaging of the k-th fourth preset value is greater than the first preset multiple of the second largest value M2. Corresponding spreading factor of k is the first orthogonal variable spreading factor code of k; or, continuously obtaining N maximum values of the energy signals accumulated and averaged by the fourth preset value of the kth channel in the preset N periods, if N If the same maximum value of the maximum values is consecutively greater than or equal to the first preset number of times, and the orthogonal maximum spreading factor codes corresponding to the same maximum value are the same, the same maximum value is obtained. A first orthogonal variable spreading factor code having a spreading factor of k, the N being a positive integer greater than one.
参见图 4, 图 4是本发明实施例四提供的用户设备的结构示意图。  Referring to FIG. 4, FIG. 4 is a schematic structural diagram of a user equipment according to Embodiment 4 of the present invention.
本发明实施例四提供的用户设备包括:  The user equipment provided in Embodiment 4 of the present invention includes:
第二接收单元 401, 用于对接收信号进行解扰;  a second receiving unit 401, configured to descramble the received signal;
第二相关单元 402, 用于将解扰后的接收信号与 k种扩频因子为 k的正交 可变扩频因子码分别进行相关, 所述 k为正整数;  a second correlation unit 402, configured to correlate the descrambled received signal with k orthogonal spreading factor codes having a spreading factor of k, where k is a positive integer;
第二相关值累加单元 403 , 用于对相关后的 k路信号分别进行长度为 k的 相关值累加; a second correlation value accumulating unit 403, configured to perform length k on the correlated k-channel signals Related values are accumulated;
第三累加平均单元 404, 用于对相关值累加后的 k路信号分别进行长度为 第三预设值的累加平均;  The third accumulated averaging unit 404 is configured to perform an accumulated average of the third preset value for the k-channel signals accumulated by the correlation values;
第三获得单元 405 , 用于分别获得 k路第三预设值累加平均后的信号的能 量;  a third obtaining unit 405, configured to obtain energy of the signal after the k-way third preset value is accumulated and averaged respectively;
第四累加平均单元 406, 用于将获得的 k路能量信号分别进行长度为第四 预设值的累加平均;  a fourth accumulated averaging unit 406, configured to perform the accumulated average of the obtained k-way energy signals to a fourth preset value;
第四获得单元 407 , 用于根据 k路第四预设值累加平均后的能量信号获得 生成辅导频的正交可变扩频因子码且扩频因子为 k的第一正交可变扩频因子 码;  a fourth obtaining unit 407, configured to obtain an orthogonal variable spreading factor code for generating a tuner frequency and a first orthogonal variable spreading factor with a spreading factor of k according to the energy signal accumulated by the fourth preset value of the k path Factor code
所述第二相关单元 402还用于将所述第一正交可变扩频因子码生成的扩 频因子为 256的正交可变扩频因子中第 2到第 256/k个正交可变扩频因子分别 与所述解扰后的接收信号进行相关;  The second correlation unit 402 is further configured to use the first orthogonal variable spreading factor code to generate a spreading factor of 256 to the 256th to the 256th/k orthogonality of the orthogonal variable spreading factor. a variable spreading factor is respectively associated with the descrambled received signal;
所述第二相关值累加单元 403还用于对相关后的 256/k-l路信号分别进行 长度为 256的相关值累加;  The second correlation value accumulating unit 403 is further configured to accumulate correlation values of length 256 for the correlated 256/k-1 channel signals respectively;
所述第三累加平均单元 404还用于对相关值累加后的 256/k-l路信号分别 进行长度为第五预设值的累加平均;  The third accumulated averaging unit 404 is further configured to perform an accumulated average of the 256/k-l road signals accumulated by the correlation values to a fifth preset value;
所述第三获得单元 405还用于分别获得 256/k-l路第五预设值累加平均后 的信号的能量, 将获得的能量信号分别进行长度为第六预设值的累加平均; 所述第四获得单元 407还用于根据 256/k-l路第六预设值的累加平均后的 能量信号获得辅导频的正交可变扩频因子码。  The third obtaining unit 405 is further configured to obtain the energy of the signal after the averaging of the 256/kl fifth preset value, and respectively obtain the energy signals to perform an accumulated average of the sixth preset value; The four obtaining unit 407 is further configured to obtain an orthogonal variable spreading factor code of the tuner frequency according to the accumulated averaged energy signal of the sixth preset value of 256/kl.
本发明实施例四提供的用户设备可以使用在前述对应的实施例二提供的 获得正交可变扩频因子码的方法中,详细执行过程参见上述方法实施例,在此 不再重复描述。  The user equipment provided in the fourth embodiment of the present invention may be used in the method for obtaining the orthogonal variable spreading factor code provided in the foregoing corresponding embodiment 2. For the detailed execution process, refer to the foregoing method embodiment, and the description is not repeated herein.
进一步的,在本发明实施例四提供的用户设备中, 第四获得单元 407获得 根据 k路第四预设值累加平均后的能量信号获得生成辅导频的正交可变扩频 因子码且扩频因子为 k的第一正交可变扩频因子码, 包括:  Further, in the user equipment provided in the fourth embodiment of the present invention, the fourth obtaining unit 407 obtains an orthogonal variable spreading factor code that generates the tuner frequency according to the energy signal accumulated and averaged according to the fourth preset value of the k road. A first orthogonal variable spreading factor code having a frequency factor of k, comprising:
第四获得单元 407具体用于在 k路第四预设值累加平均后的能量信号的当 前值中的最大值 Ml 大于次大值 M2的第二预设倍数时, 则获得所述最大值 Ml对应的扩频因子为 k的第一正交可变扩频因子码, 或者 The fourth obtaining unit 407 is specifically configured to obtain the maximum value when the maximum value M1 of the current value of the energy signal after the fourth predetermined value is cumulatively averaged is greater than the second predetermined multiple of the second largest value M2. a first orthogonal variable spreading factor code corresponding to a spreading factor of M1, or
第四获得单元 407连续获得预设 N个周期内 k路第四预设值累加平均后 的能量信号的 N个最大值, 若 N个最大值中相同的最大值连续出现的次数大 于或等于第二预设次数,且相同的最大值对应的正交可变扩频因子码相同, 则 获得所述相同的最大值对应的扩频因子为 k的第一正交可变扩频因子码, N 为大于 1的正整数。  The fourth obtaining unit 407 continuously obtains N maximum values of the energy signals accumulated and averaged by the fourth preset value of the k roads in the preset N periods, if the same maximum number of consecutive occurrences of the N maximum values is greater than or equal to the first If the orthogonal variable spreading factor codes corresponding to the same maximum value are the same, the first orthogonal variable spreading factor code with the spreading factor corresponding to the same maximum value is obtained, N Is a positive integer greater than one.
需要说明的是,上述用户设备中各单元之间的信息交互、执行过程等内容, 由于与本发明方法实施例基于同一构思,具体内容可参见本发明方法实施例中 的叙述, 此处不再赘述。  It should be noted that the information exchange, the execution process, and the like between the units in the user equipment are based on the same concept as the method embodiment of the present invention. For details, refer to the description in the method embodiment of the present invention. Narration.
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程, 是可以通过计算机程序来指令相关的硬件来完成,的程序可存储于计算机可读 取存储介质中,该程序在执行时,可包括如上述各方法的实施例的流程。其中, 的存储介质可为磁碟、 光盘、 只读存储记忆体(Read-Only Memory, ROM ) 或随才 储记忆体 ( Random Access Memory, RAM )等。  A person skilled in the art can understand that all or part of the process of implementing the above embodiments can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. The flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
以上对本发明提供的获得正交可变扩频因子码的方法和用户设备进行了 详细介绍, 对于本领域的一般技术人员, 依据本发明实施例的思想, 在具体实 施方式及应用范围上均会有改变之处,本说明书内容不应理解为对本发明的限 制。  The method for obtaining the orthogonal variable spreading factor code and the user equipment provided by the present invention are described in detail above. For those skilled in the art, according to the idea of the embodiment of the present invention, the specific implementation manner and the application range are The contents of this specification are not to be construed as limiting the invention.

Claims

权 利 要 求 Rights request
1、 一种获得正交可变扩频因子码的方法, 其特征在于, 包括:  A method for obtaining an orthogonal variable spreading factor code, comprising:
对接收信号进行解扰;  De-scrambling the received signal;
将解扰后的接收信号与第 2到 256种扩频因子为 256的正交可变扩频因子 码分别进行相关;  The descrambled received signal is correlated with the second to 256 orthogonal variable spreading factor codes having a spreading factor of 256;
对相关后的 255路信号分别进行长度为 256的相关值累加;  Accumulating correlation values of length 256 for the associated 255 signals;
对相关值累加后的 255路信号分别进行长度为第一预设值的累加平均; 分别获得 255路第一预设值累加平均后的信号的能量,将获得的 255路能 量信号分别进行长度为第二预设值的累加平均;  The 255 signals accumulated after the correlation values are respectively subjected to an accumulated average of the first preset value; respectively, the energy of the 255 channels of the first preset value is obtained, and the obtained 255 energy signals are respectively lengthened. The cumulative average of the second preset values;
根据 255 路第二预设值累加平均后的能量信号获得辅导频的正交可变扩 频因子码。  The orthogonal variable spreading factor code of the tuner frequency is obtained by accumulating the averaged energy signal according to the 255 second preset value.
2、 根据权利要求 1所述的方法, 其特征在于, 所述根据 255路第二预设 值累加平均后的能量信号获得辅导频的正交可变扩频因子码 , 包括:  The method according to claim 1, wherein the orthogonally variable spreading factor code of the tuner frequency is obtained by accumulating the averaged energy signal according to the 255 second preset value, including:
若 255路第二预设值累加平均后的能量信号的当前值中的最大值 Ml大于 次大值 M2的第一预设倍数, 则获得所述最大值 Ml对应的正交可变扩频因子 码, 或者  Obtaining an orthogonal variable spreading factor corresponding to the maximum value M1 if a maximum value M1 of the current values of the 255-channel second preset values is greater than a first predetermined multiple of the second largest value M2 Code, or
连续获得预设 N个周期内 255路第二预设值累加平均后的能量信号的 N 个最大值, 若 N个最大值中相同的最大值连续出现的次数大于或等于第一预 设次数,且所述相同的最大值对应的正交可变扩频因子码相同, 则获得所述相 同的最大值对应的正交可变扩频因子码, 所述 N为大于 1的正整数。  The N maximum values of the energy signals accumulated by the 255 second preset values in the preset N periods are continuously obtained, and if the same maximum number of the N maximum values continuously appears is greater than or equal to the first preset number, And the orthogonal variable spreading factor codes corresponding to the same maximum value are the same, and the orthogonal variable spreading factor codes corresponding to the same maximum value are obtained, where N is a positive integer greater than 1.
3、 一种获得正交可变扩频因子码的方法, 其特征在于, 包括:  3. A method for obtaining an orthogonal variable spreading factor code, comprising:
对接收信号进行解扰; 相关, 所述 k为正整数;  Desmuting the received signal; correlation, the k is a positive integer;
对相关后的 k路信号分别进行长度为 k的相关值累加;  Accumulating correlation values of length k for the correlated k-channel signals;
对相关值累加后的 k路信号分别进行长度为第三预设值的累加平均; 分别获得 k路第三预设值累加平均后的信号的能量,将获得的 k路能量信 号分别进行长度为第四预设值的累加平均;  The k-channel signals accumulated by the correlation values are respectively subjected to an accumulated average of the third preset value; respectively, the energy of the signal obtained by accumulating and averaging the third preset value of the k-channel is obtained, and the obtained k-channel energy signals are respectively lengthened as The cumulative average of the fourth preset value;
根据 k路第四预设值累加平均后的能量信号获得生成辅导频的正交可变 扩频因子码且扩频因子为 k的第一正交可变扩频因子码; Obtaining an orthogonal variable of the generated tuner frequency according to the energy signal accumulated by averaging the fourth preset value of the k road a first orthogonal variable spreading factor code having a spreading factor code and a spreading factor of k;
将所述第一正交可变扩频因子码生成的扩频因子为 256 的正交可变扩频 因子中第 2到第 256/k个正交可变扩频因子码分别与所述解扰后的接收信号进 行相关;  Generating, by the first orthogonal variable spreading factor code, a second to 256/k orthogonal variable spreading factor codes of orthogonal variable spreading factors of 256 and the solution The received signal after the disturbance is correlated;
对相关后的 256/k- 1路信号分别进行长度为 256的相关值累加;  Accumulating correlation values of length 256 for the correlated 256/k-1 signals;
对相关值累加后的 256/k-l 路信号分别进行长度为第五预设值的累加平 均;  The 256/k-l signals accumulated after the correlation values are respectively accumulated and accumulated to a fifth preset value;
分别获得 256/k-l路第五预设值累加平均后的信号的能量, 将获得的能量 信号分别进行长度为第六预设值的累加平均;  Obtaining the energy of the signal after the averaging of the fifth preset value of 256/k-l, respectively, and performing the accumulated average of the length of the sixth preset value;
根据 256/k-l路第六预设值的累加平均后的能量信号获得辅导频的正交可 变扩频因子码。  The orthogonal variable spreading factor code of the tuner frequency is obtained according to the accumulated averaged energy signal of the sixth preset value of 256/k-l.
4、 根据权利要求 3所述的方法, 其特征在于, 所述根据 k路第四预设值 累加平均后的能量信号获得生成辅导频的正交可变扩频因子码且扩频因子为 k的第一正交可变扩频因子码, 包括:  The method according to claim 3, wherein the accumulating and averaging the energy signal according to the fourth preset value of the k path obtains an orthogonal variable spreading factor code for generating a tuner frequency and the spreading factor is k The first orthogonal variable spreading factor code includes:
若 k路第四预设值累加平均后的能量信号的当前值中的最大值 L1大于次 大值 L2的第二预设倍数, 则获得所述最大值 L1对应的扩频因子为 k的第一 正交可变扩频因子码, 或者  If the maximum value L1 of the current value of the energy signal after the fourth predetermined value of the k-way is added is greater than the second predetermined multiple of the second largest value L2, the first spreading factor corresponding to the maximum value L1 is obtained. An orthogonal variable spreading factor code, or
连续获得预设 N个周期内 k路第四预设值累加平均后的能量信号的 N个 最大值, 若 N个最大值中相同的最大值连续出现的次数大于或等于第一预设 次数,且所述相同的最大值对应的正交可变扩频因子码相同, 则获得所述相同 的最大值对应的扩频因子为 k的第一正交可变扩频因子码, 所述 N为大于 1 的整数。  The N maximum values of the energy signals accumulated and averaged by the fourth preset value of the k roads in the preset N periods are continuously obtained, and if the same maximum number of the N maximum values continuously appears is greater than or equal to the first preset number of times, And the orthogonal variable spreading factor codes corresponding to the same maximum value are the same, and obtaining a first orthogonal variable spreading factor code with a spreading factor of k corresponding to the same maximum value, where N is An integer greater than 1.
5、 一种用户设备, 其特征在于, 包括:  5. A user equipment, comprising:
第一接收单元 , 用于对接收信号进行解扰;  a first receiving unit, configured to descramble the received signal;
第一相关单元, 用于将解扰后的接收信号与第 2到 256种扩频因子为 256 的正交可变扩频因子码分别进行相关;  a first correlation unit, configured to separately correlate the descrambled received signal with the second to 256 orthogonal variable spreading factor codes having a spreading factor of 256;
第一相关值累加单元, 用于对相关后的 255 路信号分别进行长度为 256 的相关值累加;  a first correlation value accumulating unit, configured to accumulate correlation values of length 256 for the correlated 255 signals respectively;
第一累加平均单元,用于对相关值累加后的 255路信号分别进行长度为第 一预设值的累加平均; The first accumulated averaging unit is configured to perform the length of the 255 signals after the correlation values are accumulated a cumulative average of a preset value;
第一获得单元, 用于分别获得 255 路第一预设值累加平均后的信号的能 量;  a first obtaining unit, configured to respectively obtain energy of a signal obtained by cumulatively averaging 255 first preset values;
第二累加平均单元,用于将获得的 255路能量信号分别进行长度为第二预 设值的累加平均;  a second accumulated averaging unit, configured to perform the cumulative average of the obtained 255 energy signals for the second preset value;
第二获得单元,用于根据 255路第二预设值累加平均后的能量信号获得辅 导频的正交可变扩频因子码。  And a second obtaining unit, configured to obtain an orthogonal variable spreading factor code of the auxiliary pilot according to the 255 channel second preset value accumulated and averaged energy signals.
6、 根据权利要求 5所述的用户设备, 其特征在于, 所述第二获得单元根 据 255 路第二预设值累加平均后的能量信号获得辅导频的正交可变扩频因子 码, 包括:  The user equipment according to claim 5, wherein the second obtaining unit obtains an orthogonal variable spreading factor code of the tuner frequency according to the 255 second preset value accumulated and averaged energy signals, including :
第二获得单元在 k路第四预设值累加平均后的能量信号的当前值中的最 大值 Ml大于次大值 M2的第二预设倍数时, 则获得所述最大值 Ml对应的扩 频因子为 k的第一正交可变扩频因子码; 或者,  Obtaining the maximum value M1 corresponding to the maximum value M1 when the maximum value M1 of the current value of the energy signal after the fourth predetermined value is cumulatively averaged by the second obtaining unit is greater than the second predetermined multiple of the second largest value M2 a first orthogonal variable spreading factor code having a factor of k; or
第二获得单元连续获得预设 N个周期内 k路第四预设值累加平均后的能 量信号的 N个最大值, 若 N个最大值中相同的最大值连续出现的次数大于或 等于第二预设次数,且所述相同的最大值对应的正交可变扩频因子码相同, 则 获得所述相同的最大值对应的扩频因子为 k的第一正交可变扩频因子码,所述 N为大于 1的正整数。  The second obtaining unit continuously obtains N maximum values of the energy signals accumulated and averaged by the fourth preset value of the kth path in the preset N periods, if the same maximum number of consecutive occurrences of the N maximum values is greater than or equal to the second a preset number of times, and the orthogonal variable spreading factor codes corresponding to the same maximum value are the same, and obtaining a first orthogonal variable spreading factor code with a spreading factor of k corresponding to the same maximum value, The N is a positive integer greater than one.
7、 一种用户设备, 其特征在于, 包括:  7. A user equipment, comprising:
第二接收单元, 用于对接收信号进行解扰;  a second receiving unit, configured to descramble the received signal;
第二相关单元,用于将解扰后的接收信号与 k种扩频因子为 k的正交可变 扩频因子码分别进行相关, 所述 k为正整数;  a second correlation unit, configured to correlate the descrambled received signal with k orthogonal transform spread factor codes having a spreading factor of k, wherein the k is a positive integer;
第二相关值累加单元,用于对相关后的 k路信号分别进行长度为 k的相关 值累加;  a second correlation value accumulating unit for accumulating correlation values of length k for the correlated k-channel signals;
第三累加平均单元,用于对相关值累加后的 k路信号分别进行长度为第三 预设值的累加平均;  a third accumulated averaging unit, configured to perform an accumulated average of a third preset value for the k-channel signals accumulated by the correlation values;
第三获得单元, 用于分别获得 k路第三预设值累加平均后的信号的能量; 第四累加平均单元,用于将获得的 k路能量信号分别进行长度为第四预设 值的累加平均; 第四获得单元,用于根据 k路第四预设值累加平均后的能量信号获得生成 辅导频的正交可变扩频因子码且扩频因子为 k的第一正交可变扩频因子码; 所述第二相关单元还用于将所述第一正交可变扩频因子码生成的扩频因 子为 256的正交可变扩频因子中第 2到第 256/k个正交可变扩频因子分别与所 述解扰后的接收信号进行相关; a third obtaining unit, configured to respectively obtain the energy of the signal obtained by accumulating the average of the k-th third preset value; and the fourth accumulating averaging unit is configured to separately accumulate the obtained k-way energy signals to a fourth preset value average; a fourth obtaining unit, configured to obtain, according to the accumulated energy signal of the fourth preset value of the k path, a first orthogonal variable spreading factor that generates an orthogonal variable spreading factor code of the tuner frequency and a spreading factor of k The second correlation unit is further configured to use the first orthogonal variable spreading factor code to generate a spreading factor of 256 to the 256th to the 256th orthogonal orthogonal spreading factors The variable spreading factor is respectively correlated with the descrambled received signal;
所述第二相关值累加单元还用于对相关后的 256/k-l路信号分别进行长度 为 256的相关值累加;  The second correlation value accumulating unit is further configured to accumulate correlation values of length 256 for the correlated 256/k-1 channel signals respectively;
所述第三累加平均单元还用于对相关值累加后的 256/k-l路信号分别进行 长度为第五预设值的累加平均;  The third accumulated averaging unit is further configured to perform an accumulated average of the fifth preset value by using the 256/k-l road signals accumulated by the correlation values;
所述第三获得单元还用于分别获得 256/k-l路第五预设值累加平均后的信 号的能量, 将获得的能量信号分别进行长度为第六预设值的累加平均;  The third obtaining unit is further configured to obtain the energy of the signal after the 256/k-l fifth preset value is accumulated and averaged, and respectively perform the accumulated energy averages of the sixth preset value;
所述第四获得单元还用于根据 256/k-l路第六预设值的累加平均后的能量 信号获得辅导频的正交可变扩频因子码。  The fourth obtaining unit is further configured to obtain an orthogonal variable spreading factor code of the tuner frequency according to the accumulated averaged energy signal of the sixth preset value of 256/k-1.
8、 根据权利要求 7所述的用户设备, 其特征在于, 所述第四获得单元获 得根据 k路第四预设值累加平均后的能量信号获得生成辅导频的正交可变扩 频因子码且扩频因子为 k的第一正交可变扩频因子码, 包括:  The user equipment according to claim 7, wherein the fourth obtaining unit obtains an orthogonal variable spreading factor code for generating a tuner frequency according to the energy signal accumulated and averaged according to the fourth preset value of the k road. And the first orthogonal variable spreading factor code of the spreading factor is k, including:
所述第四获得单元在 k路第四预设值累加平均后的能量信号的当前值中 的最大值 L1大于次大值 L2的第二预设倍数时, 则获得所述最大值 L1对应的 扩频因子为 k的第一正交可变扩频因子码, 或者  Obtaining, according to the maximum value L1, the maximum value L1 of the current value of the energy signal after the fourth preset value is cumulatively averaged by the fourth obtaining unit is greater than the second preset multiple of the second largest value L2 a first orthogonal variable spreading factor code having a spreading factor of k, or
所述第四获得单元连续获得预设 N个周期内 k路第四预设值累加平均后 的能量信号的 N个最大值, 若 N个最大值中相同的最大值连续出现的次数大 于或等于第二预设次数, 且所述相同的最大值对应的正交可变扩频因子码相 同, 则获得所述相同的最大值对应的扩频因子为 k 的第一正交可变扩频因子 码, 所述 N为大于 1的正整数。  The fourth obtaining unit continuously obtains N maximum values of the energy signals accumulated and averaged by the fourth preset value of the kth path in the preset N periods, if the same maximum number of consecutive occurrences of the N maximum values is greater than or equal to a second predetermined number of times, and the orthogonal variable spreading factor codes corresponding to the same maximum value are the same, and obtaining a first orthogonal variable spreading factor with a spreading factor of k corresponding to the same maximum value Code, the N being a positive integer greater than one.
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