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大规模MIMO系统研究进展
说明： 随着无线通信技术的快速发展和智能手机的迅速普及，人们对数据传输速率提出了更高的需
求。为进一步提高数据传输速率，通过增加基站天线数目构建大规模ＭＩＭＯ系统，是一种高效而相对
便捷的方式。大规模ＭＩＭＯ系统能深度发掘空间维的自由度，使得基站能够利用同一时频资源服务于
多个用户。本文探讨了大规模ＭＩＭＯ系统的导频污染问题及解决方案、适用于大规模ＭＩＭＯ系统的
信道模型以及低复杂度的传输技术与实现方法三项关键技术。与现有ＭＩＭＯ系统相比，大规模ＭＩＭＯ
系统能显著提高频谱效率、能量效率和系统的鲁棒性能。作为第五代移动通信（５Ｇ）最具潜力的研究内
容之一，大规模ＭＩＭＯ无线通信技术已引起国内外的广泛关注，但相关研究工作尚处在起步阶段，还有
大量的技术难点需要进一步突破。(so that the base station can use the same time-frequency resources to serve
Multiple users.In this paper, pilot frequency pollution of large scale MIMO system and its solution are discussed
Channel model, low complexity transmission technology and implementation method are three key technologies.Large scale MIMO compared to existing MIMO systems
The spectrum efficiency, energy efficiency and robust performance of the system can be significantly improved.As the fifth generation mobile communication (5G) has the most potential within the research)
- 2020-10-23 15:27:22下载
- 积分：1
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电机控制
电机控制是指，对电机的启动、加速、运转、减速及停止进行的控制。根据不同电机的类型及电机的使用场合有不同的要求及目的。对于电动机，通过电机控制，达到电机快速启动、快速响应、高效率、高转矩输出及高过载能力的目的。(Motor control refers to the control of starting, accelerating, running, decelerating and stopping of motor. There are different requirements and purposes according to different types of motors and the use occasions of motors. For motor, through motor control, the purpose of fast starting, fast response, high efficiency, high torque output and high overload capacity of motor is achieved.)
- 2018-12-08 21:03:47下载
- 积分：1
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WT_PV_Load_Scenario
说明： 蒙特卡洛生成关于风电光伏的初始场景，然后在进行缩减实现场景集的提取(Monte Carlo generates the initial scenes about wind photovoltaic, and then reduces them to extract scene sets.)
- 2018-12-31 20:06:21下载
- 积分：1
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这是一个用ppt做的软件工程实习有关的资料
这是一个用ppt做的软件工程实习有关的资料-This is a ppt to do with software engineering internship-related information
- 2023-01-24 04:40:03下载
- 积分：1
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ajax组件，使.net开发更加舒坦，增加了用户体验友好度
ajax组件，使.net开发更加舒坦，增加了用户体验友好度-ajax components, so that. net development of more加舒坦, an increase of the user experience friendly
- 2022-05-13 11:09:21下载
- 积分：1
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用PIC16F887做的4个触摸按键的例程
用PIC16F887做的4个触摸按键的例程-M-TOUCH SAMPLE CODE FOR PIC16F887
- 2022-06-12 13:09:46下载
- 积分：1
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06945348
Slip-ratio-based methods are commonly used to control
the wheel torque such that the wheel dynamics is stabilized
and the desired traction/braking force is attained; however,
slip-ratio-based controllers are incompetent for precise longitudinal
tire force tracking due to nonparametric tire model uncertainties.
- 2019-05-09 17:08:15下载
- 积分：1
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cse5805,you can see,car
cse5805,you can see,car
- 2022-07-10 14:03:37下载
- 积分：1
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Mail-list
实现通讯录的存储和呼叫功能，并且能实现按呼叫次数或者按姓名进行排序，在visual studio 2008中可直接运行(Address book and call to achieve the storage function, and can achieve the number of calls or by sorting by name, in visual studio 2008 can be run directly)
- 2011-11-09 09:38:27下载
- 积分：1
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050308_fixed
风力发电机的模型，采用电力仿真软件设计，参数比较适合。(wind energy conversion system PSCAD)
- 2012-10-02 11:26:57下载
- 积分：1
