扩频信号对蓄意干扰具有很强的抵抗力,除非对手知道跳频模式(Spread-spectrum signals are highly resistant to deliberate jamming unless the adversary has knowledge of the frequency-hopping pattern. )。 跳频所需的总带宽比仅使用一个载波频率传输相同信息所需的带宽要宽得多。但由于传输在任何给定时间只发生在该...
"频率跳变扩谱调制" (frequency hopping spread spectrum modulation)指跳变至某些信道频率的调制系统,而该等信道频率是从 …www.epdoc.cn|基于15个网页 2. 跳频扩频调制 CCSA:通信词典... ... 直序列扩频 Direct Sequence Spread Spectrum 跳频扩频调制 frequency hopping spread spectrum modula…www.ccsa.org.cn...
The system is particularly suitable for use in a cordless telephone system. The transceiver includes components for both direct sequence spread spectrum transmission and reception and for frequency hopping spread spectrum transmission and reception.BEAMISH, NORMAN, J.WALLEY, JOHN, S....
跳频技术 (Frequency-Hopping Spread Spectrum;FHSS)在同步、且同时的情况下,接受两端以特定型式的窄频载波来传送讯号,对于一个非特定的接受器,FHSS所产生的跳动讯号对它而言,只算是脉冲噪声。FHSS所展开的讯号可依特别设计来规避噪声或One-to-Many的非重复的频道,并且这些跳频讯号必须遵守FCC的要求,使用75个以上的跳...
spectrum (DSSS). in Frequency-Hopping Spread Spectrum (FHSS), different modulation frequencies are used in different periods of time. The signal is broadcast over a random series of radio frequencies, hopping from frequency to frequency at fixed intervals. ...
1 扩频通信的论文翻译Frequency Hopping Spread Spectrum (FHSS) vs. Direct Sequence Spread Spectrum (DSSS)in Broadband Wireless Access (BWA)and Wireless LAN (WLAN) by Sorin M. SCHWARTZ Director, Training & Documentation Scope In 1997 IEEE defined the 802.11 Wireless LAN (WLAN) standard, intended to...
Frequency-hopping spread spectrum (FHSS) is repeated switching of carrier frequency during radio transmission to reduce interference and avoid interception.
LoRa1121 supports LoRa and (G)FSK modulation in the sub-GHz and 2.4G frequency bands, as well as Sigfox® modulation in the sub-GHz band, and long-range frequency hopping spread spectrum (LR-FHSS) in the sub-GHz, 1.9-2.1GHz, and 2.4GHz ISM bands. The LR1121 meets the physical ...
frequency hopping spread spectrum 读音:美英 基本释义 调频扩频;技术;跳频扩频;跳频扩谱;跳频技术 分词解释 frequency频繁性 hopping卖力的,忙碌的v. 跳上[下]( hop的现在分词 ) spread& vi. 伸开 spectrum光谱 frequency hopping spread spectrum是什么意思 frequency hopping spread spectrum怎么读 frequency hopping ...
摘要: A solution for the precise and cost-effective generation of frequency-hopping spread-spectrum waveforms using digital frequency synthesis based on read-only-memories (ROM, PROM, EPROM) is studied. ...关键词: Spread spectrum communication Digital modulation Frequency modulation Prototypes Frequency...