△f = f·v·cosθ/c,f表示载波频率,5G/B5G朝着毫米波等高频段方向发展,因此多普勒拓展的影响将更显著.此外,Masssive MIMO的现有规模已达256维度,并将朝着上千的规模发展.值得注意的是,MIMO系统若要在容量上随天线数增加而线性递增,准确的信道估计必不可少.因此,时选信道的研究具有很高的实用价值.最近,一种新的调制方式OTFS(Orthogonal Time Frequency  Space)被提出,旨在解决双选信道所带来系统性能损失.与传统OFDM需要引入很高的复杂…

Noun. complacency n. 自得;自鸣得意 nomenclature  n. 专业术语:e.g. the nomenclature of music; 音乐的专门术语 Verb. abscond vt. 潜逃;逃跑; e.g. He absconded from the bank with all the money. bemoan vt. 对...抱怨:对...不满:e.g. ... and often researchers bemoan the lack of well-va…

Dead Fraction Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 1762   Accepted: 568 Description Mike is frantically scrambling to finish his thesis at the last minute. He needs to assemble all his research notes into vaguely coherent form…

Lara Croft, the fiercely independent daughter of a missing adventurer, must push herself beyond her limits when she discovers the island where her father disappeared. In this mysterious island, Lara finds a tomb with a very heavy door. To open the do…

时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 Lara Croft, the fiercely independent daughter of a missing adventurer, must push herself beyond her limits when she discovers the island where her father disappeared. In this mysterious island, Lara finds a tomb…

Emacs 安装配置使用教程 来源 https://www.jianshu.com/u/a27b97f900f7 序|Preface 先来一篇有趣的简介:Emacs和Vim:神的编辑器和编辑器之神 - 51CTO.COM 为何写这篇教程? 作为一个彻头彻尾的emacs新手,尽管有些薄弱的编程经验,但上手这么一个黑客级别的编辑器还是难免一段阵痛期.虽然网上有很多非常好的教程,比如这篇著名的文章,一年成为Emacs高手(像神一样使用编辑器),虽然提供了一个很好的学习框架,但具体的学习内容还是需要你自…

题目链接:https://hihocoder.com/problemset/problem/1829 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 Lara Croft, the fiercely independent daughter of a missing adventurer, must push herself beyond her limits when she discovers the island where her father disappe…

Tomb Raider https://hihocoder.com/problemset/problem/1829?sid=1394836 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 Lara Croft, the fiercely independent daughter of a missing adventurer, must push herself beyond her limits when she discovers the island where…

Dead Fraction Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 3478   Accepted: 1162 Description Mike is frantically scrambling to finish his thesis at the last minute. He needs to assemble all his research notes into vaguely coherent for…

任意门:http://hihocoder.com/problemset/problem/1829 Tomb Raider 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 Lara Croft, the fiercely independent daughter of a missing adventurer, must push herself beyond her limits when she discovers the island where her fath…