WO2011147157A1 - Method and device for simulating smart antenna array - Google Patents
Method and device for simulating smart antenna array Download PDFInfo
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- WO2011147157A1 WO2011147157A1 PCT/CN2010/078114 CN2010078114W WO2011147157A1 WO 2011147157 A1 WO2011147157 A1 WO 2011147157A1 CN 2010078114 W CN2010078114 W CN 2010078114W WO 2011147157 A1 WO2011147157 A1 WO 2011147157A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
Definitions
- the present invention relates to the field of communications, and in particular to a method and an apparatus for simulating a smart antenna array.
- a smart antenna in a Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system is composed of 8 or 6 antennas, unlike a conventional unicast antenna.
- the antenna array and by tracking the uplink signal arrival angle of the mobile station, shapes the downlink transmission signal. Specifically, that is, the downlink signal is formed into a narrow beam, and the direction of the beam is directed to the mobile station.
- the related technology provides a simulation technology based on the SCM model.
- the modeling of the smart antenna is simply to extend the SCM model to 8 or 6 antennas, that is, the array as a whole, for each antenna. Simulate the change in the angle of arrival, the scattering angle, and the path fading of its upstream signal.
- the inventors have found that the disadvantage of this scheme is that the complexity of implementation is high and the amount of computation is large.
- a primary object of the present invention is to provide a simulation method and apparatus for a smart antenna array to solve at least one of the above problems.
- a method for simulating a smart antenna array including: setting an angle of arrival of each antenna element of a smart antenna array such that a difference between arrival angles of adjacent two antenna elements is a fixed value Emulating the impulse response of the wireless channel of each antenna unit according to the preset attribute parameters of each antenna unit, wherein the preset attribute parameters include: the above-mentioned arrival angle; respectively, the input transmission signal and the wireless of each antenna unit obtained by simulation
- the impulse response of the channel is convoluted to generate a received signal of each antenna unit; the received signals of the respective antenna units are superimposed to obtain a received signal of the smart antenna array.
- a simulation apparatus for a smart antenna array including: a wireless channel generation module corresponding to each antenna unit of the smart antenna array, each of the wireless channel generation modules being respectively configured according to the corresponding antenna
- the preset attribute parameter of the unit simulates an impulse response of the wireless channel of the antenna unit, where the preset attribute parameter includes: an angle of arrival, and a difference in angle of arrival used by two wireless channel generating modules corresponding to two adjacent antenna units
- the value is a fixed value; a single antenna simulator corresponding to each antenna unit of the smart antenna array, and each single antenna simulator is used for respectively transmitting an impulse response and an input transmission signal of the wireless channel generation module corresponding to the corresponding antenna unit.
- Convolution is performed to generate a received signal of the antenna unit; and a mixer is configured to superimpose the received signals output by the respective single antenna emulators.
- FIG. 1 is a schematic structural diagram of a simulation device for a smart antenna array according to an embodiment of the present invention
- FIG. 2 is a schematic structural diagram of a simulation device for a smart antenna array according to a preferred embodiment of the present invention
- a schematic diagram of a structure of a wireless channel generating module of an embodiment and FIG.
- FIG. 4 is a flowchart of a method for simulating a smart antenna array according to an embodiment of the present invention.
- BEST MODE FOR CARRYING OUT THE INVENTION the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.
- 1 is a schematic structural diagram of a simulation apparatus of a smart antenna array according to an embodiment of the present invention, including: N radio channel generation modules 10, N single antenna emulators 20, and a mixer 30.
- Each of the wireless channel generating modules 10 respectively corresponds to one antenna unit of the smart antenna array, and each of the wireless channel generating modules 10 is configured to simulate an impulse response of the wireless channel of the antenna unit according to a preset attribute parameter of the corresponding antenna unit, where The N is the total number of the antenna elements of the simulated smart antenna array, and the preset attribute parameters include: an angle of arrival.
- two wireless channel generating modules corresponding to two adjacent antenna units in the smart antenna array 10 The difference in the angle of arrival used is a fixed value; each single antenna emulator 20 corresponds to one antenna unit of the smart antenna array, and each single antenna emulator 20 is coupled to a radio channel generating module 10, respectively.
- the antenna emulator 20 is configured to convolve the impulse response output by the radio channel generation module 10 corresponding to the corresponding antenna unit with the input transmission signal to generate a reception signal of the antenna unit; the mixer 30 and each single antenna emulator 20 Phase coupling for stacking the received signals output by each single antenna simulator 20 .
- N 6 or 8.
- the simulation device of the smart antenna array of the embodiment of the present invention when the wireless channel generating module 10 simulates the impulse response of the wireless channel, the difference of the angle of arrival used by the wireless channel generating module 10 corresponding to the two adjacent antenna units is fixed.
- the foregoing transmission signals input by the single antenna emulator 20 corresponding to each antenna unit are the same, and may be generated and input according to each simulation requirement.
- the transmission signal may be a random sequence, and the simulation generates a certain Baseband signals for TD-SCDMA users, etc.
- the wireless channel generating module 10 and the single antenna emulator 20 corresponding to each antenna unit may be integrated, that is, the function of the wireless channel generating module 10 is integrated in the single antenna emulator 20.
- each single-antenna emulator 20 includes two functional modules: an emulation module 200 and an arithmetic module 202, wherein the emulation module 200 is equivalent to the radio channel generating module 10 in FIG. 2, and is used to simulate the radio channel of the antenna unit.
- the impulse response, the operation module 202 is equivalent to the single-antenna simulator 20 in FIG. 3, for generating a received signal of the corresponding antenna unit by convolving the transmitted signal with the impulse response output by the simulation module 200, namely:
- R i (t) S(t) ® ch i (t) Where (0 represents the received signal on the antenna unit i, S(t) represents the transmitted signal, and ch represents the impulse response of the wireless channel corresponding to the antenna unit i.
- the transmitted signal ⁇ ) is used to simulate all antenna elements Single antenna emulator
- the transmission signal can be a random sequence, the generated baseband signal of a certain TD user, etc.; and the corresponding wireless channel (t) of each antenna unit
- the impulse response may be simulated in the single antenna simulator 20 by the preset attribute parameters of the antenna unit.
- the smart antenna array receives the total signal R(t).
- 3 is a block diagram showing the structure of each radio channel generating module 10 according to a preferred embodiment of the present invention. As shown in FIG.
- each wireless channel generation module 10 includes the same number of paths.
- each wireless channel generating module 10 may further include a direct path through which a direct-reaching radio wave exists between the antenna and the receiver. In the wireless channel generating module 10 shown in FIG.
- each path when simulating the impulse response of the wireless channel of the antenna unit, each path generates an initial channel according to the transmission angle parameter of the antenna unit and the preset angle of arrival parameter ⁇ .
- a sequence, and a pre-set power amplification factor of the antenna unit amplifies the initial channel sequence by a power amplifier; and then the delay devices of each path further delay according to the delay coefficient of the antenna unit, and finally, each initial channel sequence is based on The power spectral density of the Gaussian noise of the antenna unit is superimposed with Gaussian noise, thereby obtaining an impulse response of the wireless channel of the antenna unit.
- the transmission angle parameter of each path on each antenna unit.
- the angle of arrival parameter ⁇ ⁇ between the corresponding paths of adjacent antenna elements differs by a fixed value.
- the angle parameter ⁇ ⁇ of the different diameters of the same antenna is predetermined, and the values may be the same or different.
- the transmission angle parameters used by the wireless channel generation module 10 corresponding to each antenna unit. D , the power amplification factor, the delay coefficient and the power spectral density of the Gaussian noise are the same, and can be generated according to each simulation in practical applications.
- the angle of arrival parameter AOA used by the radio channel generating module 10 corresponding to each antenna unit satisfies the following relationship: the difference of the angle of arrival parameter 0 AOA used by the radio channel generating module 10 corresponding to the adjacent antenna unit is a fixed value.
- the angle of arrival parameters used by each of the wireless channel generating modules 10 are different.
- the fixed value is a constant, that is, the simulation device has the same fixed value in each simulation; or the fixed value may also be a function of the number of received user signals of the simulated smart antenna array, specifically,
- Step S402 setting an angle of arrival of each antenna element of the smart antenna array, so that two adjacent two The difference between the angles of arrival of the antenna elements is a fixed value;
- the fixed value can be a constant or a function of the number of user signals received by the smart antenna array.
- Step S404 Simulate impact responses of the wireless channels of the respective antenna units according to preset attribute parameters of the respective antenna units, where the preset attribute parameters include: an angle of arrival; for example, the wireless of each antenna unit may be simulated by using multiple tap models. The impulse response of the channel.
- Step S408 The received signals of the respective antenna elements are superimposed to obtain a received signal of the smart antenna array.
- the simulation method of the smart antenna array can set the angle of arrival of each antenna unit in the simulation by setting a fixed value of the phase difference of the arrival angles of the antenna elements, thereby ensuring the accuracy of the simulation and reducing the complexity of the simulation.
- the angles of arrival of the individual antenna elements are different from each other, so that the accuracy of the simulation can be further ensured.
- the following steps may be provided in accordance with the angle of arrival of the respective antenna elements: Step 1, the respective antenna elements disposed in the center of the antenna unit A is the angle of arrival; In practice, the simulation can be generated randomly each parameter A.
- the parameters used to simulate the impulse response of the wireless channel of each antenna unit may further include: the number L of the paths constituting the wireless channel, the transmission angle, and the power amplification factor Pi P L , the delay parameter Dela yi Delay L and the power spectral density ⁇ of the Gaussian noise.
- the same number of paths are set for each antenna element! ⁇ , the same emission angle, the same power amplification factor Pi P L , the same delay parameter
- Delayi Delay L and the power spectral density ⁇ of the same Gaussian noise can further reduce the complexity of the simulation calculation.
- the fixed value may be a constant, that is, the fixed value is the same each time the simulation is performed, or the fixed value may be different each time the simulation is performed, that is, the fixed value may be a receiving user on the smart antenna array.
- the following describes the angle of arrival of each antenna unit in two ways. Method 1: The angle of arrival parameter of each antenna unit is increased or decreased by using a constant. For example, the following steps can be used to set: Step 1 First, set the angle of arrival parameter ⁇ of the center antenna unit.
- Step 2 the first antenna element on the right side of the central antenna unit reaches the angle parameter ⁇ ⁇ zA + C, the first left antenna unit arrival angle parameter ⁇
- Step 3 Set the angle of arrival parameter of the first antenna unit on the right side of the center antenna unit Step 4, and so on, the second antenna unit arrival angle parameter on the right side of the center antenna unit
- the computing device may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
- the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module.
- the invention is not limited to any specific combination of hardware and software.
- the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.
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Abstract
A method and a device for simulating a smart antenna array are disclosed in the invention. The method includes: configuring an arrival angle of each antenna unit of the smart antenna array, and setting the difference between the arrival angles of two adjacent antenna units as a fixed value; simulating the radio channel impulse response of each antenna unit respectively based on the pre-set attribute parameters of each antenna unit, wherein the pre-set attribute parameters include the arrival angle; convoluting the inputted transmitting signal with the simulated radio channel impulse response of each antenna unit respectively, so as to generate the receiving signal of each antenna unit; adding the receiving signal of each antenna unit to obtain the receiving signal of the smart antenna array. The simulation accuracy can be assured according to the invention.
Description
智能天线阵列的仿真方法及装置 技术领域 本发明涉及通信领域， 具体而言， 涉及一种智能天线阵列的仿真方法及 装置。 背景技术 不 同 于传统的单才艮天线 ， 时分同 步码分多 址接入 ( Time Division-Synchronous Code Division Multiple Access, 简称为 TD-SCDMA )系 统中的智能天线是由 8根或者 6根天线所组成的天线阵列， 并且通过跟踪移 动台的上行信号到达角， 来对下行的发送信号进行赋形。 具体地， 即， 使得 下行信号形成窄波束， 并且波束的方向指向移动台。 从而使得天线与移动台 之间的无线链路能量集中， 能够有效地抵抗多径衰落， 减小下行信号对其它 用户的千扰， 从而增加了系统容量。 目前， 相关技术提供了一种基于 SCM模型的仿真技术， 对智能天线的 建模， 其方案是简单地将 SCM模型扩展到 8根或者 6根天线， 即将阵列视 为一个整体， 对每根天线模拟其上行信号的到达角、 散射角和路径衰落的变 化。 发明人发现， 这种方案的缺点是实现的复杂度较高， 运算量较大。 发明内容 本发明的主要目的在于提供一种智能天线阵列的仿真方法及装置， 以至 少解决上述问题之一。 根据本发明的一个方面， 提供了一种智能天线阵列的仿真方法， 包括： 设置智能天线阵列的各个天线单元的到达角， 使相邻两个天线单元的到达角 之间的差值为固定值； 根据各个天线单元的预设属性参数， 分别仿真各个天 线单元的无线信道的冲击响应， 其中， 预设属性参数包括： 上述到达角； 将 输入的发送信号分别与仿真得到的各个天线单元的无线信道的冲击响应进行 卷积， 生成各个天线单元的接收信号； 将各个天线单元的接收信号进行叠加， 得到智能天线阵列的接收信号。
根据本发明的另一方面， 提供了一种智能天线阵列的仿真装置， 包括： 与智能天线阵列的各个天线单元分别对应的无线信道生成模块， 各个无线信 道生成模块分别用于根据其对应的天线单元的预设属性参数仿真该天线单元 的无线信道的冲击响应， 其中， 该预设属性参数包括： 到达角， 且相邻两个 天线单元对应的两个无线信道生成模块使用的到达角的差值为固定值； 与智 能天线阵列的各个天线单元分别对应的单天线仿真器， 各个单天线仿真器分 别用于将与其对应的天线单元对应的无线信道生成模块输出的冲击响应与输 入的发送信号进行卷积， 生成该天线单元的接收信号； 以及混合器， 用于将 各个单天线仿真器输出的接收信号进行叠加。 通过本发明， 通过将相邻两个天线单元的到达角之间的差值设置为固定 值， 简化了仿真时各个天线单元的到达角生成方式， 从而降低了智能天线阵 列仿真的复杂度， 减少了仿真过程中的运算量， 并且在本发明中， 各个天线 单元的到达角相互关联， 从而保证了仿真的精确性。 附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部 分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的 不当限定。 在附图中： 图 1是 居本发明实施例的智能天线阵列的仿真装置的结构示意图； 图 2 是 居本发明优选实施例的智能天线阵列的仿真装置的结构示意 图； 图 3是 居本发明实施例的无线信道生成模块的结构示意图； 以及 图 4是 居本发明实施例的智能天线阵列的仿真方法的流程图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是， 在 不冲突的情况下， 本申请中的实施例及实施例中的特征可以相互组合。 图 1为 居本发明实施例的智能天线阵列的仿真装置的结构示意图， 包 括： N个无线信道生成模块 10、 N个单天线仿真器 20和混合器 30。 其中，
每个无线信道生成模块 10 分别与智能天线阵列的一个天线单元对应， 各个 无线信道生成模块 10 分别用于根据其对应的天线单元的预设属性参数仿真 该天线单元的无线信道的冲击响应， 其中， N为仿真的智能天线阵列的天线 单元的总数， 该预设属性参数包括： 到达角， 在本发明实施例中， 智能天线 阵列中相邻的两个天线单元对应的两个无线信道生成模块 10 使用的到达角 的差值为固定值； 每个单天线仿真器 20 分别与智能天线阵列的一个天线单 元对应， 每个单天线仿真器 20分别与一个无线信道生成模块 10相耦合， 各 个单天线仿真器 20用于将与其对应的天线单元对应的无线信道生成模块 10 输出的冲击响应与输入的发送信号进行卷积， 生成该天线单元的接收信号； 混合器 30与各个单天线仿真器 20相耦合， 用于将各个单天线仿真器 20输 出的接收信号进行叠加。 对于 TD-SCDMA系统的智能天线阵列而言， 上述 N=6或 8。 通过本发明实施例的上述智能天线阵列的仿真装置， 各个无线信道生成 模块 10 仿真无线信道的冲击响应时， 相邻两个天线单元对应的无线信道生 成模块 10 使用的到达角的差值为固定值， 从而使得仿真的各个天线单元之 间具有相互作用， 可以保证仿真的精确度， 同时还可以减少仿真的复杂度和 计算量。 在本发明优选实施例中， 对于各个天线单元对应的单天线仿真器 20 输 入的上述发送信号均相同， 可以根据每次仿真需要而产生并输入， 例如， 发 送信号可以是随机序列， 模拟产生某 TD-SCDMA用户的基带信号等。 在本发明优选实施例中， 如图 2所示， 各个天线单元对应的无线信道生 成模块 10和单天线仿真器 20可以合一设置， 即将无线信道生成模块 10的 功能集成在单天线仿真器 20中实现， 每个单天线仿真器 20包括两个功能模 块： 仿真模块 200和运算模块 202 , 其中， 仿真模块 200相当于图 2中的无 线信道生成模块 10 , 用于仿真天线单元的无线信道的冲击响应， 运算模块 202相当于图 3 中的单天线仿真器 20, 用于通过将发送信号与仿真模块 200 输出的冲击响应作卷积， 产生其对应的天线单元的接收信号， 即： TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a method and an apparatus for simulating a smart antenna array. BACKGROUND OF THE INVENTION A smart antenna in a Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system is composed of 8 or 6 antennas, unlike a conventional unicast antenna. The antenna array, and by tracking the uplink signal arrival angle of the mobile station, shapes the downlink transmission signal. Specifically, that is, the downlink signal is formed into a narrow beam, and the direction of the beam is directed to the mobile station. Thereby, the wireless link energy between the antenna and the mobile station is concentrated, and the multipath fading can be effectively resisted, and the interference of the downlink signal to other users is reduced, thereby increasing the system capacity. At present, the related technology provides a simulation technology based on the SCM model. The modeling of the smart antenna is simply to extend the SCM model to 8 or 6 antennas, that is, the array as a whole, for each antenna. Simulate the change in the angle of arrival, the scattering angle, and the path fading of its upstream signal. The inventors have found that the disadvantage of this scheme is that the complexity of implementation is high and the amount of computation is large. SUMMARY OF THE INVENTION A primary object of the present invention is to provide a simulation method and apparatus for a smart antenna array to solve at least one of the above problems. According to an aspect of the present invention, a method for simulating a smart antenna array is provided, including: setting an angle of arrival of each antenna element of a smart antenna array such that a difference between arrival angles of adjacent two antenna elements is a fixed value Emulating the impulse response of the wireless channel of each antenna unit according to the preset attribute parameters of each antenna unit, wherein the preset attribute parameters include: the above-mentioned arrival angle; respectively, the input transmission signal and the wireless of each antenna unit obtained by simulation The impulse response of the channel is convoluted to generate a received signal of each antenna unit; the received signals of the respective antenna units are superimposed to obtain a received signal of the smart antenna array. According to another aspect of the present invention, a simulation apparatus for a smart antenna array is provided, including: a wireless channel generation module corresponding to each antenna unit of the smart antenna array, each of the wireless channel generation modules being respectively configured according to the corresponding antenna The preset attribute parameter of the unit simulates an impulse response of the wireless channel of the antenna unit, where the preset attribute parameter includes: an angle of arrival, and a difference in angle of arrival used by two wireless channel generating modules corresponding to two adjacent antenna units The value is a fixed value; a single antenna simulator corresponding to each antenna unit of the smart antenna array, and each single antenna simulator is used for respectively transmitting an impulse response and an input transmission signal of the wireless channel generation module corresponding to the corresponding antenna unit. Convolution is performed to generate a received signal of the antenna unit; and a mixer is configured to superimpose the received signals output by the respective single antenna emulators. By the invention, by setting the difference between the arrival angles of two adjacent antenna elements to a fixed value, the generation angle of each antenna unit in the simulation is simplified, thereby reducing the complexity of the smart antenna array simulation and reducing The amount of calculation in the simulation process, and in the present invention, the angles of arrival of the respective antenna elements are correlated with each other, thereby ensuring the accuracy of the simulation. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 1 is a schematic structural diagram of a simulation device for a smart antenna array according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of a simulation device for a smart antenna array according to a preferred embodiment of the present invention; A schematic diagram of a structure of a wireless channel generating module of an embodiment; and FIG. 4 is a flowchart of a method for simulating a smart antenna array according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. 1 is a schematic structural diagram of a simulation apparatus of a smart antenna array according to an embodiment of the present invention, including: N radio channel generation modules 10, N single antenna emulators 20, and a mixer 30. among them, Each of the wireless channel generating modules 10 respectively corresponds to one antenna unit of the smart antenna array, and each of the wireless channel generating modules 10 is configured to simulate an impulse response of the wireless channel of the antenna unit according to a preset attribute parameter of the corresponding antenna unit, where The N is the total number of the antenna elements of the simulated smart antenna array, and the preset attribute parameters include: an angle of arrival. In the embodiment of the present invention, two wireless channel generating modules corresponding to two adjacent antenna units in the smart antenna array 10 The difference in the angle of arrival used is a fixed value; each single antenna emulator 20 corresponds to one antenna unit of the smart antenna array, and each single antenna emulator 20 is coupled to a radio channel generating module 10, respectively. The antenna emulator 20 is configured to convolve the impulse response output by the radio channel generation module 10 corresponding to the corresponding antenna unit with the input transmission signal to generate a reception signal of the antenna unit; the mixer 30 and each single antenna emulator 20 Phase coupling for stacking the received signals output by each single antenna simulator 20 . For a smart antenna array of a TD-SCDMA system, the above N = 6 or 8. According to the simulation device of the smart antenna array of the embodiment of the present invention, when the wireless channel generating module 10 simulates the impulse response of the wireless channel, the difference of the angle of arrival used by the wireless channel generating module 10 corresponding to the two adjacent antenna units is fixed. The value, so that the interaction between the various antenna elements of the simulation can ensure the accuracy of the simulation, and at the same time reduce the complexity and calculation of the simulation. In the preferred embodiment of the present invention, the foregoing transmission signals input by the single antenna emulator 20 corresponding to each antenna unit are the same, and may be generated and input according to each simulation requirement. For example, the transmission signal may be a random sequence, and the simulation generates a certain Baseband signals for TD-SCDMA users, etc. In the preferred embodiment of the present invention, as shown in FIG. 2, the wireless channel generating module 10 and the single antenna emulator 20 corresponding to each antenna unit may be integrated, that is, the function of the wireless channel generating module 10 is integrated in the single antenna emulator 20. In the implementation, each single-antenna emulator 20 includes two functional modules: an emulation module 200 and an arithmetic module 202, wherein the emulation module 200 is equivalent to the radio channel generating module 10 in FIG. 2, and is used to simulate the radio channel of the antenna unit. The impulse response, the operation module 202 is equivalent to the single-antenna simulator 20 in FIG. 3, for generating a received signal of the corresponding antenna unit by convolving the transmitted signal with the impulse response output by the simulation module 200, namely:
Ri (t) = S(t) ® chi (t)
其中， (0表示天线单元 i上的接收信号， S(t)表示发送信号， ch 示天线单元 i所对应的无线信道的冲击响应。 在实际应用中， 发送信号^ )对于仿真所有的天线单元的单天线仿真器R i (t) = S(t) ® ch i (t) Where (0 represents the received signal on the antenna unit i, S(t) represents the transmitted signal, and ch represents the impulse response of the wireless channel corresponding to the antenna unit i. In practical applications, the transmitted signal ^) is used to simulate all antenna elements Single antenna emulator
20都相同， 具体可以根据单次仿真需要而产生并输入， 例如， 发送信号可以 是随机序列， 模拟产生的某 TD用户的基带信号等； 而每个天线单元所对应的无线信道 (t)的冲击响应可以该天线单元的 预设属性参数在该单天线仿真器 20中仿真产生。 各个单天线仿真器 20仿真 得到的各单个天线单元上的接收信号传送至混合器 30 进行叠加， 例如， 可 以釆用时 i或叠力口： R(t) = R! (t) 由此， 获得智能天线阵列总的接收信号 R(t)。 图 3 为根据本发明优选实施例的各个无线信道生成模块 10的结构示意 图， 如图 3所示， 在本发明优选实施例中釆用多 tap模型模拟天线单元的无 线信道。 在图 3中， "径" 所指的即 tap, 即在本发明优选实施例中， 天线单 元的无线信道由为 L个径组成， 在实际应用中， L的具体取值可以才艮据每次 具体仿真实现来确定。 优选地， 在本发明优选实施例中， 各个无线信道生成 模块 10所包含的径的数量相同。 可选地， 在本发明优选实施例， 各个无线信道生成模块 10 还可以包含 直达径 ,通过直达径可以仿真天线和接收机之间存在有直接到达的无线电波。 在图 3所示的无线信道生成模块 10 中， 在仿真天线单元的无线信道的 冲击响应时，各个径根据该天线单元的发射角参数^ ^ 和预先设定的到达角 参数^ ^生成初始信道序列， 并 居预先设置的该天线单元的功率放大系数 将初始信道序列经功率放大器放大； 然后各个径的时延装置再根据该天线单 元的时延系数进行时延， 最后， 各个初始信道序列根据该天线单元的高斯噪 声的功率谱密度， 叠加高斯噪声， 从而得到该天线单元的无线信道的冲击响 应。
其中， 每个天线单元上各径的发射角参数 。 β 相同， 但相邻天线单元对 应径之间的到达角参数 θΑΟΑ相差一个固定值。 同一天线不同径的达角参数 θΑΟΑ是预先给定的， 其取值可以相同也可以不同。 在本发明优选实施例中， 各个天线单元对应的无线信道生成模块 10 使 用的发射角参数 。 D 、 功率放大系数、 时延系数和高斯噪声的功率谱密度均 相同， 实际应用中可以才艮据每次仿真生成。 而各个天线单元对应的无线信道 生成模块 10使用的到达角参数 AOA满足下面关系：相邻天线单元对应的无线 信道生成模块 10使用的到达角参数 0AOA的差值为固定值。 优选地， 各个无线信道生成模块 10使用的到达角参数^ ^各不相同。 优选地, 上述固定值为常数， 即该仿真装置在每次仿真时该固定值相同； 或者，该固定值也可以是仿真的智能天线阵列的接收用户信号的个数的函数， 具体地， 可以通过下式确定该固定值 C:
其中， η表示用户个数， A, =A ,
+ G - 1)C iJAS为预定的角度扩 展参数， 在仿真初始时给定的一个常数值， 例如， σΑ3 =5 ; 为预定的第 j 径上的信号功率， 在仿真初始化时预先给定， 例如， =1 , A 为智能天线阵 列中中心天线单元对应的无线信道生成模块 10使用的到达角。 图 4为 居本发明实施例的智能天线阵列的仿真方法的流程图， 包括以 下步骤 (步骤 S402 -步骤 S408 ): 步骤 S402 , 设置智能天线阵列的各个天线单元的到达角， 使相邻两个天 线单元的到达角之间的差值为固定值；
例如， 该固定值可以为常数， 也可以为智能天线阵列接收用户信号的个 数的函数。 步骤 S404 , 根据各个天线单元的预设属性参数， 分别仿真各个天线单元 的无线信道的冲击响应， 其中， 预设属性参数包括： 到达角； 例如， 可以釆用多 tap模型仿真各个天线单元的无线信道的冲击响应。 步骤 S406 ,将输入的发送信号分别与仿真得到的各个天线单元的无线信 道的冲击响应进行卷积， 生成各个天线单元的接收信号； 例如， 天线单元 i的接收信号为： Ri (t) = S(t) ® chi (t) 其中， (0表示天线单元 i上的接收信号， 表示发送信号， c/¾ (t)表 示天线单元 i所对应的无线信道的冲击响应。 步骤 S408 , 将各个天线单元的接收信号进行叠加， 得到智能天线阵列的 接收信号。 例如， 智能天线阵列的接收信号 R(t)为： R(t) = R! (t)。 通过本发明实施例提供的上述智能天线阵列的仿真方法， 可以通过设置 各天线单元的到达角间相差固定值的方式设置仿真时各天线单元的到达角， 既可以保证仿真的精度， 同时还可以减少仿真的复杂度。 在本发明优选实施例中， 设置的各个天线单元的到达角互不相同， 从而 可以进一步保证仿真的精度。 在本发明优选实施例中，可以按照以下步骤设置各个天线单元的到达角： 步骤 1 , 设置各个天线单元中中心天线单元的到达角为 A; 在实际应用中， 可以每次仿真可以随机生成参数 A。
步骤 2,设置中心天线单元右侧的第 n个天线单元的到达角为 A+nC ,设 置中心天线单元左侧的第 n个天线单元的到达角为 A-nC , 其中， n = N/2或 N/2 - 1 , N为智能天线阵列包含的天线总数， C为上述固定值。 通过上述方式设置各个天线单元的到达角， 可以进一步保证各个天线单 元的到达角的相关性， 并且， 可以将智能天线阵列中各个天线单元的到达角 均匀分布随机生成的某一个值左右， 进一步保证了仿真的精度。 在实际应用中， 仿真各个天线单元的无线信道的冲击响应时使用的参数 (即上述预设属性参数）还可以包括： 组成无线信道的径的个数 L、 发射角、 功率放大系数 Pi PL、 时延参数 Delayi DelayL以及高斯噪声的功率谱 密度 σ 。 在本发明优选实施例中， 为各个天线单元设置相同的径的数量！^、 相同的发射角 、 相同的功率放大系数 Pi PL , 相同的时延参数20 is the same, specifically can be generated and input according to a single simulation needs, for example, the transmission signal can be a random sequence, the generated baseband signal of a certain TD user, etc.; and the corresponding wireless channel (t) of each antenna unit The impulse response may be simulated in the single antenna simulator 20 by the preset attribute parameters of the antenna unit. The received signals on the individual antenna elements simulated by the respective single-antenna emulators 20 are transmitted to the mixer 30 for superposition, for example, when i or the overlapping force port is used: R(t) = R! (t) The smart antenna array receives the total signal R(t). 3 is a block diagram showing the structure of each radio channel generating module 10 according to a preferred embodiment of the present invention. As shown in FIG. 3, in the preferred embodiment of the present invention, a multi-tap model is used to simulate the radio channel of the antenna unit. In FIG. 3, the "path" refers to tap, that is, in the preferred embodiment of the present invention, the radio channel of the antenna unit is composed of L paths. In practical applications, the specific value of L can be calculated according to each Sub-specific simulation implementations are determined. Preferably, in a preferred embodiment of the present invention, each wireless channel generation module 10 includes the same number of paths. Optionally, in the preferred embodiment of the present invention, each wireless channel generating module 10 may further include a direct path through which a direct-reaching radio wave exists between the antenna and the receiver. In the wireless channel generating module 10 shown in FIG. 3, when simulating the impulse response of the wireless channel of the antenna unit, each path generates an initial channel according to the transmission angle parameter of the antenna unit and the preset angle of arrival parameter ^^. a sequence, and a pre-set power amplification factor of the antenna unit amplifies the initial channel sequence by a power amplifier; and then the delay devices of each path further delay according to the delay coefficient of the antenna unit, and finally, each initial channel sequence is based on The power spectral density of the Gaussian noise of the antenna unit is superimposed with Gaussian noise, thereby obtaining an impulse response of the wireless channel of the antenna unit. Wherein, the transmission angle parameter of each path on each antenna unit. β is the same, but the angle of arrival parameter θ ΑΟΑ between the corresponding paths of adjacent antenna elements differs by a fixed value. The angle parameter θ ΑΟΑ of the different diameters of the same antenna is predetermined, and the values may be the same or different. In a preferred embodiment of the present invention, the transmission angle parameters used by the wireless channel generation module 10 corresponding to each antenna unit. D , the power amplification factor, the delay coefficient and the power spectral density of the Gaussian noise are the same, and can be generated according to each simulation in practical applications. The angle of arrival parameter AOA used by the radio channel generating module 10 corresponding to each antenna unit satisfies the following relationship: the difference of the angle of arrival parameter 0 AOA used by the radio channel generating module 10 corresponding to the adjacent antenna unit is a fixed value. Preferably, the angle of arrival parameters used by each of the wireless channel generating modules 10 are different. Preferably, the fixed value is a constant, that is, the simulation device has the same fixed value in each simulation; or the fixed value may also be a function of the number of received user signals of the simulated smart antenna array, specifically, The fixed value C is determined by the following formula: Where η represents the number of users, A, =A, + G - 1) C iJ AS is a predetermined angle expansion parameter, a constant value given at the beginning of the simulation, for example, σ Α 3 = 5 ; the signal power at the predetermined j-th path, given in advance during simulation initialization For example, =1, A is the angle of arrival used by the wireless channel generation module 10 corresponding to the central antenna unit in the smart antenna array. 4 is a flowchart of a simulation method of a smart antenna array according to an embodiment of the present invention, including the following steps (step S402 - step S408): Step S402, setting an angle of arrival of each antenna element of the smart antenna array, so that two adjacent two The difference between the angles of arrival of the antenna elements is a fixed value; For example, the fixed value can be a constant or a function of the number of user signals received by the smart antenna array. Step S404: Simulate impact responses of the wireless channels of the respective antenna units according to preset attribute parameters of the respective antenna units, where the preset attribute parameters include: an angle of arrival; for example, the wireless of each antenna unit may be simulated by using multiple tap models. The impulse response of the channel. Step S406, convolving the input transmission signals with the simulated impulse responses of the wireless channels of the respective antenna units to generate received signals of the respective antenna units; for example, the received signals of the antenna unit i are: R i (t) = S(t) ® ch i (t) where (0 represents the received signal on the antenna unit i, indicating the transmitted signal, and c/3⁄4 (t) represents the impulse response of the wireless channel corresponding to the antenna unit i. Step S408, The received signals of the respective antenna elements are superimposed to obtain a received signal of the smart antenna array. For example, the received signal R(t) of the smart antenna array is: R(t) = R! (t). The simulation method of the smart antenna array can set the angle of arrival of each antenna unit in the simulation by setting a fixed value of the phase difference of the arrival angles of the antenna elements, thereby ensuring the accuracy of the simulation and reducing the complexity of the simulation. In a preferred embodiment of the invention, the angles of arrival of the individual antenna elements are different from each other, so that the accuracy of the simulation can be further ensured. In a preferred embodiment of the invention The following steps may be provided in accordance with the angle of arrival of the respective antenna elements: Step 1, the respective antenna elements disposed in the center of the antenna unit A is the angle of arrival; In practice, the simulation can be generated randomly each parameter A. Step 2: setting an angle of arrival of the nth antenna unit on the right side of the center antenna unit to A+nC, and setting an angle of arrival of the nth antenna unit on the left side of the center antenna unit to A-nC, where n = N/2 Or N/2 - 1 , N is the total number of antennas included in the smart antenna array, and C is the above fixed value. By setting the angle of arrival of each antenna unit in the above manner, the correlation of the angles of arrival of the antenna elements can be further ensured, and the angle of arrival of each antenna element in the smart antenna array can be evenly distributed around a randomly generated value, further ensuring The precision of the simulation. In practical applications, the parameters used to simulate the impulse response of the wireless channel of each antenna unit (ie, the preset attribute parameter) may further include: the number L of the paths constituting the wireless channel, the transmission angle, and the power amplification factor Pi P L , the delay parameter Dela yi Delay L and the power spectral density σ of the Gaussian noise. In a preferred embodiment of the invention, the same number of paths are set for each antenna element! ^, the same emission angle, the same power amplification factor Pi P L , the same delay parameter
Delayi DelayL以及相同的高斯噪声的功率谱密度 σ , 从而可以进一步减 少仿真计算的复杂度。 在本发明优选实施例中， 上述固定值可以为常数， 即每次仿真时该固定 值相同， 或者， 每次仿真时该固定值也可以不同， 即该固定值可以为智能天 线阵列上接收用户信号的个数的函数。 下面分别对釆用这两种方式设置各天 线单元的到达角进行说明。 方式一、 各天线单元的到达角参数^ ^间釆用常数加减， 例如， 可以按 照以下步 4聚设置： 步骤 1 , 首先设定中心天线单元的到达角参数^。^ = ， 具体的 Α值由每 次仿真实现中随机产生； 步骤 2, 中心天线单元右侧的第一个天线单元到达角参数^ ^ zA+C, 第 一个左侧的天线单元到达角参数^ 这里的 C值是一个常数， 在仿真 初始时设定， 例 ¾σ , C = 5 ° 。 步骤 3 , 依此类推， 中心天线单元右侧的第二个天线单元到达角参数 eAOA = +2C, 第一个左侧的天线单元到达角参数^ ^ = -2 , 右侧的第三个 天线单元到达角参数 ^ =A+3C , 第三个左侧的天线单元到达角参数
eAOA= --ic, ...... , 直至设置所有的天线单元的到达角参数。 釆用该方式设置天线单元的到达角， 由于相邻两个天线单元的到达角的 差值为常数， 对于每次仿真都相同， 从而可以进一步降低仿真的复杂度。 方式二、 各天线单元的到达角参数^ ^间釆用固定值加减， 但该固定值 是用户数的函数， 例如， 可以按照以下步骤设置： 步骤 1, 首先设定中心天线单元的到达角参数^。^= ， 具体的 A值由每 次仿真实现中随机产生； 步骤 2, 计算各天线单元的到达角之间的固定差值 B, B值是该天线上 接收用户信号的个数的函数， 计算公式为： Delayi Delay L and the power spectral density σ of the same Gaussian noise can further reduce the complexity of the simulation calculation. In a preferred embodiment of the present invention, the fixed value may be a constant, that is, the fixed value is the same each time the simulation is performed, or the fixed value may be different each time the simulation is performed, that is, the fixed value may be a receiving user on the smart antenna array. A function of the number of signals. The following describes the angle of arrival of each antenna unit in two ways. Method 1: The angle of arrival parameter of each antenna unit is increased or decreased by using a constant. For example, the following steps can be used to set: Step 1 First, set the angle of arrival parameter ^ of the center antenna unit. ^ = , the specific Α value is randomly generated in each simulation implementation; Step 2, the first antenna element on the right side of the central antenna unit reaches the angle parameter ^ ^ zA + C, the first left antenna unit arrival angle parameter ^ The C value here is a constant, set at the beginning of the simulation, for example 3⁄4σ, C = 5 °. Step 3, and so on, the second antenna element on the right side of the center antenna unit reaches the angle parameter e AOA = +2C, the first left antenna unit arrival angle parameter ^ ^ = -2 , the third on the right side Antenna unit arrival angle parameter ^ = A + 3C, the third left antenna unit arrival angle parameter e AOA = --ic, ...... , until the angle of arrival parameters of all antenna elements are set.设置Set the angle of arrival of the antenna unit in this way. Since the difference in the angle of arrival of the adjacent two antenna elements is constant, the simulation is the same for each simulation, so that the complexity of the simulation can be further reduced. In the second method, the angle of arrival parameter of each antenna unit is increased or decreased by a fixed value, but the fixed value is a function of the number of users. For example, the following steps can be set: Step 1. First, set the angle of arrival of the central antenna unit. Parameter ^. ^= , the specific A value is randomly generated in each simulation implementation; Step 2, calculating the fixed difference B between the arrival angles of the antenna elements, the B value is a function of the number of receiving user signals on the antenna, and calculating The formula is:
-10 -10
2=A + B, P2 = 10^; σΑ3=5 (度）。 步骤 3, 设置中心天线单元右侧的第一个天线单元的到达角参数
步骤 4, 依此类推， 中心天线单元右侧的第二个天线单元到达角参数2=A + B, P 2 = 10^; σΑ3 = 5 (degrees). Step 3: Set the angle of arrival parameter of the first antenna unit on the right side of the center antenna unit Step 4, and so on, the second antenna unit arrival angle parameter on the right side of the center antenna unit
0AOA=A+2C, 第一个左侧的天线单元到达角参数^ ^= -2 , 右侧的第三个 天线单元到达角参数^ 第三个左侧的天线单元到达角参数 0 AOA =A+2C, the first left antenna unit arrival angle parameter ^ ^= -2 , the third antenna unit arrival angle parameter on the right side ^ the third left antenna unit arrival angle parameter
0AOA=A-3C, ...... , 直至设置完所有的天线单元的到达角参数。 釆用这种方式设置各个天线单元的到达角， 将相邻两个天线单元的到达 角之差设置为天线接收用户信息个数的函数， 从而可以进一步提高仿真的精 度。
从以上的描述中， 可以看出， 在本发明实施例中， 通过^ 1相邻两个天线 单元的到达角之间的差值设置为固定值， 简化了仿真时各个天线单元的到达 角生成方式， 从而降低了智能天线阵列仿真的复杂度， 减少了仿真过程中的 运算量， 并且在本发明中， 各个天线单元的到达角相互关联， 从而保证了仿 真的精确性。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布 在多个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行的程 序代码来实现， 从而， 可以将它们存储在存储装置中由计算装置来执行， 并 且在某些情况下， 可以以不同于此处的顺序执行所示出或描述的步 4聚， 或者 将它们分别制作成各个集成电路模块， 或者将它们中的多个模块或步骤制作 成单个集成电路模块来实现。 这样， 本发明不限制于任何特定的硬件和软件 结合。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本 领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的^"神和 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护 范围之内。
0 AOA =A-3C, ...... , until the angle of arrival parameters of all antenna elements are set.设置 Set the angle of arrival of each antenna unit in this way, and set the difference between the arrival angles of the adjacent two antenna elements as a function of the number of user information received by the antenna, so that the accuracy of the simulation can be further improved. From the above description, it can be seen that in the embodiment of the present invention is generated by ^ the difference between the angle of arrival provided two adjacent antenna elements 1 to a fixed value, it simplifies the simulation angle of arrival of the respective antenna elements In this way, the complexity of the smart antenna array simulation is reduced, the amount of calculation in the simulation process is reduced, and in the present invention, the angles of arrival of the respective antenna elements are correlated with each other, thereby ensuring the accuracy of the simulation. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.
Claims
1. 一种智能天线阵列的仿真方法， 其特征在于， 包括： A simulation method for a smart antenna array, comprising:
设置智能天线阵列的各个天线单元的到达角， 使相邻两个天线单元 的到达角之间的差值为固定值； Setting an angle of arrival of each antenna element of the smart antenna array such that a difference between arrival angles of two adjacent antenna elements is a fixed value;
根据所述各个天线单元的预设属性参数， 分别仿真所述各个天线单 元的无线信道的冲击响应， 其中， 所述预设属性参数包括： 所述到达角； 将输入的发送信号分别与仿真得到的所述各个天线单元的无线信道 的冲击响应进行卷积， 生成所述各个天线单元的接收信号； Emulating the impulse response of the wireless channel of each antenna unit according to the preset attribute parameter of each antenna unit, where the preset attribute parameter includes: the angle of arrival; and respectively inputting the transmitted signal and the simulation result The impulse response of the wireless channel of each of the antenna units is convoluted to generate a received signal of each antenna unit;
将所述各个天线单元的接收信号进行叠加， 得到所述智能天线阵列 的接收信号。 The received signals of the respective antenna elements are superimposed to obtain a received signal of the smart antenna array.
2. 根据权利要求 1所述的方法， 其特征在于， 所述各个天线单元的到达角 互不 ^目同。 2. The method according to claim 1, wherein the angles of arrival of the respective antenna elements are different from each other.
3. 根据权利要求 2所述的方法， 其特征在于， 所述设置所述各个天线单元 的到达角包括： The method according to claim 2, wherein the setting the angle of arrival of each of the antenna elements comprises:
设置所述各个天线单元中中心天线单元的到达角为 A; 设置所述中心天线单元右侧的第 n个天线单元的到达角为 A+nC, 设置所述中心天线单元左侧的第 n个天线单元的到达角为 A-nC, 其中， n = N/2或 N/2 - 1 , N为所述智能天线阵列包含的天线总数， C为所述固 定值。 Setting an angle of arrival of the central antenna unit in each of the antenna elements to be A; setting an angle of arrival of the nth antenna unit on the right side of the central antenna unit to A+nC, and setting an nth side of the left side of the central antenna unit The angle of arrival of the antenna unit is A-nC, where n = N/2 or N/2 - 1 , where N is the total number of antennas included in the smart antenna array, and C is the fixed value.
4. 根据权利要求 3所述的方法， 其特征在于， 所述固定值为常数。 根据权利要求 3所述的方法， 其特征在于， 按照下式确定所述固定值 C: 4. Method according to claim 3, characterized in that the fixed value is a constant. The method according to claim 3, wherein the fixed value C is determined according to the following formula:
6. 居权利要求 1所述的方法， 其特征在于， 所述预设属性参数还包括： 组成天线单元的无线信道的径的数量、 发射角、 功率放大系数、 时延以 及高斯噪声的功率谱密度。 The method of claim 1, wherein the preset attribute parameter further comprises: a number of paths of the wireless channel constituting the antenna unit, an emission angle, a power amplification factor, a delay, and a power spectrum of Gaussian noise. density.
7. 根据权利要求 6所述的方法， 其特征在于， 在仿真所述各个天线单元的 天线信道的冲击响应之前， 所述方法还包括： 为所述各个天线单元设置 相同的径的数量、 相同的发射角、 相同的功率放大系数、 相同的时延以 及相同的高斯噪声的功率谱密度。 The method according to claim 6, wherein before simulating an impulse response of an antenna channel of each antenna unit, the method further comprises: setting the same number of paths and the same for each antenna unit The emission angle, the same power amplification factor, the same delay, and the power spectral density of the same Gaussian noise.
8. —种智能天线阵列的仿真装置， 其特征在于， 包括： 8. A simulation device for a smart antenna array, comprising:
与智能天线阵列的各个天线单元分别对应的无线信道生成模块， 各 个无线信道生成模块分别用于根据其对应的天线单元的预设属性参数仿 真该天线单元的无线信道的冲击响应， 其中， 所述预设属性参数包括： 到达角， 且相邻两个天线单元对应的两个无线信道生成模块使用的到达 角的差值为固定值； And a wireless channel generating module corresponding to each antenna unit of the smart antenna array, wherein each of the wireless channel generating modules is configured to simulate an impulse response of the wireless channel of the antenna unit according to a preset attribute parameter of the corresponding antenna unit, where The preset attribute parameters include: an angle of arrival, and the difference of the angles of arrival used by the two wireless channel generating modules corresponding to the two adjacent antenna units is a fixed value;
与智能天线阵列的各个天线单元分别对应的单天线仿真器， 各个单 天线仿真器分别用于将与其对应的天线单元对应的无线信道生成模块输 出的冲击响应与输入的发送信号进行卷积，生成该天线单元的接收信号； 以及 a single antenna simulator corresponding to each antenna unit of the smart antenna array, and each single antenna simulator is used for convolving the impulse response of the wireless channel generation module corresponding to the corresponding antenna unit with the input transmission signal, and generating The received signal of the antenna unit;
混合器， 用于将所述各个单天线仿真器输出的接收信号进行叠加。 a mixer for superimposing received signals output by the respective single antenna emulators.
9. 根据权利要求 8所述的装置， 其特征在于， 所述固定值为常数或按照下 式确定所述固定值 C: 9. The apparatus according to claim 8, wherein the fixed value is a constant or the fixed value C is determined according to the following formula:
其中， Μ 为所述智能天线阵列上接收用户信号的总数， A =A + Q - l)C , A 为所述智能天线阵列中中心天线单元对应的无线信道 生成模块使用的到达角， ixAS为预定的角度扩展参数， 为预定的第 径上的信号功率。 Where Μ is the total number of received user signals on the smart antenna array, A = A + Q - l) C , A is the wireless channel corresponding to the central antenna unit in the smart antenna array The angle of arrival used by the generating module, ix AS is a predetermined angular expansion parameter, which is the signal power at the predetermined first diameter.
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| CN101500254A (en) * | 2008-01-31 | 2009-08-05 | 中国移动通信集团公司 | Smart antenna performance test method, apparatus and system |
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| CN101087163A (en) * | 2006-06-07 | 2007-12-12 | 普天信息技术研究院 | A method for realizing intelligent antenna in TD-SCDMA system simulation |
| CN101262284A (en) * | 2007-03-05 | 2008-09-10 | 大唐移动通信设备有限公司 | A wireless channel simulation and testing method and device |
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