The next generation mobile communication 4g called will support very high data transmission rate. It's necessary to introduce technology with high frequency utilization in limited frequency spectrum.
未来的新一代移动通信系统4g需要提供极高的数据速率，在有限的频谱下提供尽可能高的传输速率，这就需要采用高频谱利用率技术。
Due to its high spectrum utilization and good capability of preventing muti - path interference, OFDM is regarded as the core technology in Beyond 3g mobile communication system.
OFDM技术以其高的频谱利用率和良好的抗多径干扰能力，被看作是3G以后移动通信的主流技术。
On conditions of the current technology, the thesis puts forward a new high dynamic and whole digital spread spectrum receiver which is based on the high density programmable logic devices.
根据现有的软硬件技术条件，结合实际需要，本论文提出并详细分析了一种新的基于高密度可编程逻辑器件的高动态全数字解扩接收机系统。
Ozone sterilization technology has been widely used in manufacturing pharmacy for sterilization and disinfection due to its high efficiency, broad spectrum and no residue.
臭氧灭菌具有高效、广谱、无残留的优点，现被广泛使用于药品生产过程的消毒灭菌。
The steed abundant frequency spectrum company is devotes to the human health enterprise, the collection branch, the labor, the trade to a body's high technology and new technology enterprise.
骏丰频谱公司是致力于人类健康事业，集科、工、贸于一体的高新技术企业。
This thesis comes from the National High-Technology Research and Development Program ("863"Program):The evaluation and testing of Dynamic Spectrum Sharing technology.
本论文来源于“863”计划重点课题——“动态频谱资源共享技术评估与测试”。
Hybrid spread spectrum, rake and multiple data compressing technology are used to realize air to ground mass high-speed, anti-jamming multiple data transmission.
采用复合编码扩频技术、隐分集技术以及多媒体数据压缩技术，实现了空地大容量高速、抗干扰多媒体数据传输。
Hybrid spread spectrum, rake and multiple data compressing technology are used to realize air to ground mass high-speed, anti-jamming multiple data transmission.
采用复合编码扩频技术、隐分集技术以及多媒体数据压缩技术，实现了空地大容量高速、抗干扰多媒体数据传输。
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