space communication

In this dissertation, the estimation algorithms of time-varying frequency selective channel in modern wireless communication systems including WCDMA uplink, WCDMA downlink with space time transmit diversity and MIMO system are investigated.

本文主要研究在现代无线移动通信系统中如何估计同时存在频率选择性和时间选择性衰落的信道，包括WCDMA上行链路，采用双天线空时发射分集的WCDMA下行链路和MIMO系统。

互联网摘选

Research and Realization of Hardware Platform for Deep Space Communication Simulation System

深空通信仿真系统硬件平台研究与实现

互联网摘选

Pyongyang says it will fire what it communication communications satellite into space in within days.

平壤说它将在数日内将据称是通讯卫星的物体发射入太空.

互联网摘选

Analysis of vibratory mode confinement of space paraboloid communication antenna structure

空间抛物面状通讯天线振动模态浓缩现象分析

互联网摘选

Model and Simulation of Space Communication Infrastructure

空间通信设施模型与仿真

互联网摘选

Literary translation is not only an artistical recreative activity, but also a cultural communication and aesthetic activity across the time and space and the society.

文学翻译不仅是一种艺术再创作活动，更是一种跨时空、跨社会的文化交流与艺术审美活动。

互联网摘选

This paper combines the space-time coding technique and multicarrier communication into a novel MC-DS-CDMA method using multiple antenna transmitters.

该文将空时编码技术和多载波通信相结合，设计了一种新颖的基于多发射天线的MC-DS-CDMA方法。

互联网摘选

Space Time Coding combining diversity, coding and modulation, can effectively resist multipath fading in the channel and improve the capability of the system, so it will probably become the key technology of the 3rd generation of mobile communication system.

空时编码技术综合考虑分集、编码和调制，能有效对抗信道中的多径衰落和提高系统容量，必将成为第三代移动通信系统中的关键技术。

互联网摘选

Modulation and Channel Model Simulation in Deep Space Communication System

深空通信系统中的调制技术与信道模型仿真研究

互联网摘选

Study on image compression methods in deep space communication

应用于深空通信中的图像编码方法的研究

互联网摘选

Taking aim at the higher complexity of decoding AR4JA codes and the characters of space communication, a new protograph based rate compatible family of LDPC codes were constructed.

针对已有AR4JA码译码复杂度较高的问题，结合空间通信的特点，构造了一族新的基于原型图的码率兼容LDPC码。

互联网摘选

A New System Integrated of Communication and Radiolocation with Four Antennas Space time Modulation

一种新颖的四天线时空调制通信定位综合化系统

互联网摘选

Research on Combination Modulation and Demodulation Technology in Deep Space Communication

深空通信中组合调制解调技术的研究

互联网摘选

Pyongyang says it will fire what it calls a communication communications satellite into space within days.

平壤表示最近几天将向太空发射其称作的一颗通讯卫星.

互联网摘选

Deep space exploration means to the exploration of the moon or space and celestial bodies beyond the moon. The system which actualizes tracking, telemetry and command on the spaceflights is called deep space communication system.

深空探测是指对月球和比月球更远的天体和空间进行的探测，对实施深空探测的航天器进行测控通信的系统称为深空测控通信系统。

互联网摘选

In 1969, the Radio Amateur Satellite Corporation ( AMSAT) was created in order to foster ham radio enthusiasts' participation in space research and communication.

1969年，无线电业余卫星组织(AMSAT)成立，旨在培养无线电爱好者参与太空研究和交流。

六级真题- 2019年 6月 3卷 信息匹配

This paper mainly discusses the design ways of informal communication space in high-tech parks.

主要探讨高科技园区非正式交流空间的景观设计方法.

互联网摘选