space-ground communication

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

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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。

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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。

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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

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。

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