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- Wireless Spread Spectrum Communication and Its. 无线扩频通信及其应用。
- Pseudo random sequence has broad applications in stream cipher, channel coding, and spread spectrum communication. 伪随机序列在流密码、信道编码、频通信等领域有着广泛的应用.
- A novel scheme for enhancing antijamming capabilities of spread spectrum communication systems is proposed in the paper. 本文提出了一种用于提高扩谱通讯系统抗干扰能力的新方案。
- Sequences with good pseudorandom properties and large linear span are widely used in the CDMA spread spectrum communication and cryptography. 具有优良伪随机特性和较大线性复杂度的伪随机序列广泛应用于CDMA扩频通信和密码学中。
- A new chaotic spread spectrum communication system FFH-FMDCSK is presented, which is based on FMDCSK and fast frequency hopping techniques. 本文提出一种基于差分混沌频率调制(FMDCSK)的快速跳频扩谱通信系统(简称FFH-FMDCSK)。
- A new method of spread spectrum communication and modulation based on tag to interrogator link of RFID system is intro-duced in this paper. 本文提出了一种应用于射频识别系统从RFID标签到读卡器的反向链路通信的扩频解扩方法。
- The small center frequency difference between NBI and spread spectrum signal or the large NBI power will make spread spectrum communication invalid. 但当信道中窄带干扰(尤其是时变窄带干扰)的中心频率和直扩信号的中心频率近似,或功率远大于直扩信号功率时,直扩通信可能失效。
- In the last chapter of tbe article,BER that chaotic spread spectrum sequences apply in mobilesatellite spread spectrum communication system is studied. 最后结合移动卫星通信系统模型，把混饨扩频序列实际应用于移动卫星扩频通信系统中，相应分析了它的误码性能。
- The spread spectrum communication has advantages of anti-noise, anti-interaction and nice secrecy for the noise characteristic of PN sequence. 由于PN序列具有类噪声特点，使得扩频通信具有抗噪声、抗干扰、保密性能好等优点。
- Synchron ization is one of the key techniques in spread spectrum communication systems.The paper proposes a synchr onization scheme suited for common simulation software. 同步是扩频通信的关键技术之一，本文针对直扩系统，给出了一个利用通用仿真软件包对其进行仿真的方案。
- The Future of Spread Spectrum Communications in the Datong Coal Mine Group Co. 扩频通信技术在大同煤矿的应用前景。
- Spread spectrum communication is used widely in the CDMA system and military communication because it can suppress narrow-band interference (NBI) in the common degree. 直扩通信技术作为军用通信系统和CDMA通信系统的核心技术得到了广泛的应用,且直扩通信系统本身具有一定的窄带干扰抑制能力。
- Firstly, this thesis briefly introduces the spread spectrum communication systems and the developing narrowband interference suppression techniques at present. 但在一些强干扰情况下,不得不借助于信号处理技术来提高系统的性能,以弥补扩频增益的不足。
- In direct sequence spread spectrum communication system, enemy is assumed to detect whole PN sequence chip by chip and a modulated retransmitted interference is created. 在直接序列扩频通信系统中,假设敌方能够逐个比特地检测到整个PN序列,并产生一个调制的转发干扰。
- The technology of low voltage powerline carrier spread spectrum communication and the auto meter reading system based on it are introduced in this paper. 本文就低压电力线扩频载波技术及其在自动抄表中的应用进行了研究。
- In a spread spectrum communication system,pseudocode acquisition and tracking is the base of communication and the acquisition time has direct effect on system performance. 在扩频通信系统中,伪码捕获跟踪是通信的基础,捕获时间的长短直接影响系统性能。
- The performance of hybrid spread spectrum communication systems is compared with those of the frequency hopped systems and direct sequence spread spectrum communication systems. 并且将混合扩频通信系统与跳频通信系统和直接序列扩频通信系统的性能进行了分析、比较。
- By means of the good period correlation of pseudorandom code and using the synchronism technology, the data transmission ability of the spread spectrum communication system is effectively improved. 提出了一种多幅扩频技术，利用伪随机码良好的周期互相关性，采用同步技术，有效地提高了扩频通信系统数据传输能力。
- In this paper, through research on the relation of digital watermarking to spread spectrum communication, digital watermarking methods for digital docu ments of text, image and video are presented. 本文通过研究数字水印与扩频通信技术的关系，提出了文本、图像及视频等数字文档的数字水印方法.
- A new method based on Multi-code Direct Sequence Spread Spectrum(MC-DSSS)technology is proposed to insert a spread spectrum watermarking into a spread spectrum communication signal? 本文提出了一种基于多码扩频(MC-DSSS)技术的数字水印嵌入方法,即利用扩频码的正交性将扩频水印嵌入到扩频通信信号中。
