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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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LED驱动-123
说明： ws2812驱动程序，stm32f103zet6(Ws2812 driver, stm32f103zet6)
- 2020-06-21 12:00:02下载
- 积分：1
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李氏指数
说明： 一个完整的李亚普诺夫指数计算的程序，用于混沌系统的李氏指数计算。(A complete program of Lyapunov index calculation is used for the calculation of Lyapunov index of chaotic system.)
- 2019-12-15 12:36:08下载
- 积分：1
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1-s2.0-S0094576507003682-main
VEGA, the European small launcher: Development status, future
perspectives, and applications
- 2020-06-22 12:40:01下载
- 积分：1
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这是数据库的教程,是某重点大学的非常专业的讲稿,
这是数据库的教程,是某重点大学的非常专业的讲稿,-This is the Directory database is a key university in a very professional script,
- 2022-12-24 06:40:06下载
- 积分：1
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第七次课--视频图像DCT处理及水印嵌入
熟悉IIC协议总线协议，采用IIC总线对图像采集传感器寄存器进行配置，并转换为RGB565格式。
利用异步FIFO完成从摄像头输出端到SDRAM 和SDRAM 到VGA 接口各跨时钟域信号的传输和处理。
利用 SDRAM 接口模块的设计，实现了刷新、读写等操作；为提高SDRAM 的读写带宽，均采用突发连续读写数据方式；并采用乒乓操作实现 CMOS 摄像头与VGA的帧率匹配。
利用双线性插值方法实现对图像640×480到1024×768的放大操作。
完成VGA显示接口设计。(Familiar with IIC protocol bus protocol, IIC bus is used to configure the register of image acquisition sensor and convert it into RGB565 format.
Asynchronous FIFO is used to transmit and process signals across clock domain from camera output to SDRAM and SDRAM to VGA interface.
With the design of SDRAM interface module, refresh, read and write operations are realized. In order to improve the read and write bandwidth of SDRAM, burst continuous read and write data mode is adopted, and table tennis operation is used to achieve frame rate matching between CMOS camera and VGA.
The bilinear interpolation method is used to enlarge the image from 640*480 to 1024*768.
Complete the VGA display interface design.)
- 2020-06-25 04:00:02下载
- 积分：1
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fft
说明： 假设对截断信号 进行采样，设采样间隔为0.5 s。利用离散傅立叶变换和FFT绘制频谱的Matlab实现(Suppose the truncated signal is sampled, and the sampling interval is 0.5 s. Matlab realization of spectrum drawing using discrete Fourier transform and FFT)
- 2021-02-10 09:26:21下载
- 积分：1
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测试工作能力，究竟什么方向适合你。很准的，而且很权威
测试工作能力，究竟什么方向适合你。很准的，而且很权威-Test the ability to work, what the direction for you. Very accurate and very authoritative
- 2022-08-20 22:49:02下载
- 积分：1
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baseP_Qpfc
运用P-Q分解法自编的潮流计算程序,可计算简单电力系统的潮流(PQ using the trend of self-decomposition program)
- 2009-04-02 14:08:55下载
- 积分：1
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Applied_Nonlinear_Control_Slotine
Applied Nonlinear Control,
Slotine
- 2010-02-01 19:10:08下载
- 积分：1
