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[Communication-Mobile] ydtx DL : 0: 移动通信基本知识:从通信网的角度看，移动网可以看成是有线通信网的延伸，它由无线和有线两部分组成。无线部分提供用户终端的接入，利用有限的频率资源在空中可靠地传送话音和数据；有线部分完成网络功能，包括交换、用户管理、漫游、鉴权等，构成公众陆地移动通信网PLMN。从陆地移动通信的具体实现形式来分主要有模拟移动通信和数字移动通信这两部种。-Basic knowledge of mobile communications: From the perspective of communication networks, mobile networks can be seen as an extension of wired communication network, which is both wireless and wired components. Part of user terminals to provide wireless access, frequency of use of limited resources in the air and reliable transmission of voice and data wired part of the completion of network functions, including switching, subscriber management, roaming, authentication and so on, constitute a public land mobile communication network PLMN. From land-based mobile communications to the specific forms of the main points have analog and digital mobile communications that two kinds of mobile communication.
Date : 2026-01-09 Size : 211kb User : 卜玮
[Communication-Mobile] 19 DL : 0: An image is represented as a two-dimentional array of coefficients, each coefficient representing the brightness level in that point. When looking from a higher perspective, we can t differentiate between coefficients as more important ones, and lesser important ones. But thinking more intuitively, we can.
Date : 2026-01-09 Size : 8kb User : jemimah
[Communication-Mobile] Channel.Adaptive.Technology DL : 0: 本书从信道估计的角度出发,详细介绍了基于MIMO-OFDM技术的联合物理层和MAC层的跨层设计思想。-Book from the perspective of channel estimation, described in detail based on MIMO-OFDM technology, the physical layer and MAC layer of the joint cross-layer design.
Date : 2026-01-09 Size : 6.05mb User : zwb
[Communication-Mobile] 2014_HongX_ComMag_14_07_46 DL : 0: Cognitive Radio in 5G: A Perspective on Energy-Spectral Efficiency Trade-o-Cognitive Radio in 5G: A Perspective on Energy-Spectral Efficiency Trade-off
Date : 2026-01-09 Size : 157kb User : basma