narrow band communication system 中文意思是什麼

narrow band communication system 解釋
窄帶通信系統
  • narrow : adj 1 狹 窄 狹隘的 狹小的 (opp broad wide)。2 有限的 受限制的;有偏見的 氣量小的 心眼兒窄的;眼...
  • band : n 1 帶,繩;帶形物;箍;箍條;嵌條;鑲邊;鋸條; 〈pl 〉 (法官等的)寬領帶。2 束縛,羈絆;義務;...
  • communication : n. 1. 通訊,通知;交換;信息;書信,口信,通報。2. 傳達,傳授;傳播;傳染。3. 交通,交通機關;聯系,連絡(設備)。4. 【宗教】接受聖餐。
  • system : n 1 體系,系統;分類法;組織;設備,裝置。2 方式;方法;作業方法。3 制度;主義。4 次序,規律。5 ...
  1. Optical code division multiple access ( ocdma ) is a communication mode which introduces the code division multiple access ( cdma ) technology into optical fiber communication system. besides providing asynchronous communications access, ocdma system has many advantages, such as high capacity, security against interception, suppression of narrow band disturbances, capability in forming variable bit rate networks and multi - rate networks. it implies a great challenge for the development of future communication networks, especially all optical networks

    光碼分多址( ocdma )是將碼分多址( cdma )技術與大容量的光纖通信技術相結合的一種通信方式,其主要優點表現在如下幾個方面:允許多個用戶隨機地接入同一通道:可構成真正「透明」的全光通信網路;具有良好的安全性;允許可變速率或多速率傳輸,並可同時提供多種業務支持;具有優良好的抗干擾能力,並能夠充分地利用石英光纖的可用帶寬。
  2. The spread spectrum ( ss ) communication system has stronger ability of resisting jamming, narrow band, and multipath interference than that of the conservation communication systems

    擴頻通信系統與常規的通信系統相比,具有很強的抗人為干擾,抗窄帶干擾,抗多徑干擾的能力。
  3. This task uses the ds - ss technology, and researchs the important technologies, such as synchronization of ds - ss, rake receive, narrow - band interference suppression, etc. these technology are useful for the voice - band channel of hf. i designed one system of very low bit rate for hf data communication, and completed the softwave module design of the system. i get the result of system ' s simulator, it ' s useful for the system realization

    根據短波音頻帶寬通道的特點,重點對系統的擴頻同步技術、 rake接收技術和窄帶抗干擾技術進行了專題的研究。並根據自己多年的科研經驗,設計了一種具有實際意義的短波最低限度通信系統,並對實際的軟體實現進行了模塊化的設計。
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