fhss 中文意思是什麼

fhss 解釋
跳頻擴頻技術
  1. Frequence 902928mhz adjustable with the difference of the country work way fhss or fix frequence

    工作頻率： 902928mhz隨國家或地區不同可以調整
  2. Fhss has just welcomed her new principal early 2005. with a smooth transition, this drum troupe shall continue to produce wows … and oohs … with her own innovations

    輔華中學2005年才剛迎接了新一任的校長，經過順利地接棒，他們將會繼續為大家服務。
  3. 4. analyzed two types of spread spectrum ( dsss and fhss ) approved by the fcc based on the characteristic of phy layer ; then analyzed the characteristic and technology of the cck modulation and at last put forward an improved cck scheme that will increase the data rate of wlan to 16. 5mbps

    針對物理層的特點，討論了無線局域網的兩種擴頻技術? ? dsss和fhss ，分析比較了兩者的性能特點和適用的范圍，並探討了一種支持高數據數率的cck調制方式以及使速率能達到16 . 5mbps的cck改進方案； 5
  4. Frequency hopping spread spectrum fhss

    跳頻擴頻
  5. Fhss and dsss is the general spread spectrum method in 802. 11b standard, and have the stronger confidentiality and anti - interference

    跳頻擴頻（ fhss ）與直接序列擴頻（ dsss ）是802 . 11b標準常用的兩種擴頻方式，具有較強的保密性與抗干擾性。
  6. The drawback is that fhss is relatively slow, and in congested cities with a lot of radio traffic, range can be reduced

    其缺點是較慢，在有大量無線電流量的擁擠城市中，傳輸距離有限。
  7. Work style : fhss or single frequency

    射頻功率： 2032dbm可調
  8. Every few milliseconds, a fhss signal bounces between different specific points in a designated " spread " of the electromagnetic spectrum, reducing interference from other signals and making it very difficult to eavesdrop on the transmission

    每隔幾毫秒， fhss信號在指定「擴展」的電磁頻譜的不同頻率點上跳動，減少其它信號的干擾，使它在傳輸中難以被竊聽到。
  9. In this chapter, we began with the mac - layer and then briefly explained the three types of ieee 802. 11 physical ( phy ) layers ( frequency hopping spread spectrum ( fhss ) physical layer, direct sequence spread spectrum ( dsss ) physical layer and infrared ( or photonic ) physical layer )

    本章從mac層開始，簡要解釋了三種類型的ieee802 11物理層：跳頻擴譜（ fhss ）物理層、直接序列擴譜（ dsss ）物理層、紅外（或光子）物理層。
  10. In chapter three, the theory of particular anti - jamming technologies are analyzed, especially the spread spectrum ( ss ) is one of the most important anti - jamming technologies, including direct sequence spread spectrum ( dsss ), frequency hopping spread spectrum ( fhss ) and other improved technologies

    第三章研究了時域、頻域、功率域多種抗干擾技術的抗干擾機理和定量描述抗干擾能力的方法，其中擴展頻譜技術是主流的抗干擾技術，包括直接序列擴頻和跳頻技術以及它們的改進方案。
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