NetManager(NetM) 是电信网络管理系统。用于操作、管理和维护EWSD与SURPASS的所有网元，以及其它具有SNMP或Q3接口的网络设备。NetManager能够自动完成话务统计和分析，同时还能提供安全有效的远程访问方式。

Random matrix theory has found many applications in physics, statistics and engineering since its inception. Although early developments were motivated by practical experimental problems, random matrices are now used in fields as diverse as Riemann hypothesis, stochastic differential equations, condensed matter physics, statistical physics, chaotic systems, numerical linear algebra, neural networks, multivariate statistics, information theory, signal processing and small-world networks. This article provides a tutorial on random matrices which provides an overview of the theory and brings together in one source the most significant results recently obtained. Furthermore, the application of random matrix theory to the fundamental limits of wireless communication channels is described in depth. ### 随机矩阵理论与无线通信 #### 随机矩阵理论概述 随机矩阵理论(Random Matrix Theory, RMT)自其诞生以来，在物理学、统计学以及工程领域中找到了广泛的应用。起初，这一领域的研究主要受到实际实验问题的启发，但随着时间的发展，随机矩阵的应用已经扩展到了包括黎曼假设、随机微分方程、凝聚态物理、统计物理、混沌系统、数值线性代数、神经网络、多元统计、信息论、信号处理以及小世界网络等多个领域。 #### 随机矩阵理论的关键概念 随机矩阵是指矩阵中的元素是随机变量的矩阵。这一理论的核心在于研究这些随机矩阵的统计性质。其中最重要的两个方面包括： 1. **谱分布**：指的是矩阵特征值的分布情况，这对于理解系统的稳定性及其响应特性至关重要。 2. **相关函数**：描述了不同特征值之间的相互依赖关系，这对于理解复杂系统的内部结构非常关键。 #### 随机矩阵理论在无线通信中的应用 随机矩阵理论在无线通信领域的应用主要集中在理解和分析无线通信信道的基本极限上。具体来说，它可以帮助我们解决以下几个关键问题： 1. **多天线系统（MIMO）**：在多输入多输出(MIMO)系统中，发送端和接收端都配备了多个天线。随机矩阵理论可以用来分析这种系统的容量性能，尤其是在高斯信道模型下。 2. **信道容量**：利用随机矩阵理论，我们可以更准确地评估无线信道的最大传输速率或信道容量。这对于设计高效的数据传输方案非常重要。 3. **干扰分析**：在存在多个用户的情况下，随机矩阵理论可用于分析干扰的影响，并设计有效的干扰抑制技术。 4. **多用户检测**：在多用户环境中，通过分析随机矩阵的特性，可以提高系统的检测性能和整体效率。 #### 随机矩阵理论的技术细节 - **韦尔奇-贝里定理(Wigner’s Semicircle Law)**：这是随机矩阵理论中最著名的定理之一，描述了实对称随机矩阵特征值的分布规律。这一发现对于理解大量随机矩阵的共同特征至关重要。 - **马尔钦科夫斯基-帕斯特尔尼克分布(Marchenko-Pastur Distribution)**：这是一种描述随机矩阵特征值分布的另一种模型，尤其适用于描述具有相关性的数据集。 - **自由概率论(Free Probability Theory)**：这是一种更高级的理论框架，它可以用来处理更复杂的随机矩阵模型，特别是当矩阵之间不独立时。 #### 结论 通过上述分析可以看出，随机矩阵理论不仅在理论上有着深厚的基础，而且在实际应用中也展现出了巨大的潜力。特别是在无线通信领域，通过对随机矩阵的研究，不仅可以更深入地理解通信系统的性能限制，还可以为设计更加高效可靠的通信系统提供重要的理论支持和技术指导。随着该领域研究的不断深入，预计未来还会有更多创新性的成果出现，进一步推动无线通信技术的发展。

goldsmith 无线通信英文版的答案，答案里还有matlab程序，非常适合自学。

Turbo+Coding+for+Satellite+and+Wireless+Communications

该书详细讲解了MIMO信息理论、误码率分析及接受分集理论

The book is designed to serve as a text for a first-year graduate-level course for students in electrical engineering. It is also designed to serve as a text for self-study and as a reference book for the practicing engineer involved in the design and analysis of digital communications systems. As to background, we presume that the reader has a thorough understanding of basic calculus and elementary linear systems theory and prior knowledge of probability and stochastic processes.

Hiroshi Harada, Ramjee Prasad的经典书籍，这部分主要是对OFDM的讲解，希望对大家有用哦！

Digital_communications__5th_Edition

This is an IEEE classic reissue of the book published by John Wiley & Sons in 1974.This definitive text and reference covers all aspects of microwave mobile systems design. Encompassing ten years of advanced research in the field, it reviews basic microwave theory, explains how cellular systems work and presents useful techniques for effective systems development. Key features include: complete coverage of microwave propagation techniques to design successful cellular systems, extensive chapters covering the broad fundamentals of microwave usage in mobile radio propagation and the functions of mobile radio antennas, comprehensive treatment of modulation methods, interference, noise, layout and control of high-capacity systems, and more! The return of this classic volume should be welcomed by all those seeking an authoritative and complete source of information on this emerging technology.

This is an IEEE classic reissue of the book published by John Wiley & Sons in 1974.This definitive text and reference covers all aspects of microwave mobile systems design. Encompassing ten years of advanced research in the field, it reviews basic microwave theory, explains how cellular systems work and presents useful techniques for effective systems development. Key features include: complete coverage of microwave propagation techniques to design successful cellular systems, extensive chapters covering the broad fundamentals of microwave usage in mobile radio propagation and the functions of mobile radio antennas, comprehensive treatment of modulation methods, interference, noise, layout and control of high-capacity systems, and more! The return of this classic volume should be welcomed by all those seeking an authoritative and complete source of information on this emerging technology.