spread spectrum systems 中文意思是什麼

spread spectrum systems 解釋
分散光譜系統
  • spread : vt （spread）1 伸開，伸長（手臂等），展開，張開（帆等），打開（地圖等）；鋪開（氈子等），展寬，展...
  • spectrum : n. （pl. -tra ）1. 【物理學】譜，光譜；波譜；能譜，質譜。2. 【無線電】射頻頻譜；無線電（信號）頻譜。3. 【心理學】（眼睛的）余像；殘像。4. 〈轉義〉范圍，幅度；（連續的）系列。
  • systems : 國體
  1. The spread spectrum sequences based on spatiotemporal chaotic systems

    基於時空混沌的擴頻序列產生方法
  2. Over the air service provisioning of mobile stations in spread spectrum systems

    頻譜擴展系統中移動站的空中服務保障
  3. Ss - aw distribution automation using distribution line carrier systems - part 5 - 3 : lower layer profilers - spread spectrum adaptive wideband profile

    採用配電線載波的配電自動化第5 - 3部分:低層協議集自適應寬帶擴頻
  4. Cck, dqpsk are concluded as the best spread spectrum / modulation techniques in wireless image communication systems. 1 imbps and 300 meter range can be obtained using orinoco wireless network card based on eee802. 11b wlans, which specifies cck, dbpsk, dqpsk techniques

    這種網卡採用直序擴頻和cck 、 dbpsk 、 dqpsk調制方式，工作在2 . 4ghz頻段，數據傳輸速率為11mbps ，傳輸距離最遠達300米。
  5. In addition, hybrid spread - spectrum communication system is propitious to enhance anti - jamming performance of the system that is make up of direct sequence ( ds ) and frequency hopping ( fh ), and it can satisfy the require of anti - jamming of systems. it concentrate their virtue and overcome shortage in single spread spectrum style. this paper discusses the aspect in detail

    另外，將擴頻技術中應用最廣泛的兩項技術直序擴頻（ ds ）和跳頻（ fh ）結合在一起，構成混合擴頻通信系統，有利於提高系統的抗干擾性能，更能滿足系統抗干擾的要求，而且將跳頻系統和直擴系統的優點集中起來，克服了單一擴頻方式的不足。
  6. I - cdma spread spectrum systems air interface standard - stage 3 text

    I - cdma擴展光譜系統空中介面標準.階段3文本
  7. In modern communication, direct sequence spread spectrum communications was widely used in the fields of telemetering and telecontrol systems, because of low interception probability, its high noise resistance and good security

    在現代通信中，直接序列擴頻通信技術以其截獲概率低、抗干擾性強、保密性高等優點，在航天測控領域得到了廣泛的應用。
  8. In addition, bit error rate ( ber ) performance of the m - ary orthogonal spread spectrum system based on i bit quantization is analyzed in this paper and the formula of ber is obtained. by comparing it with other several systems, some concerned conclusions about this kind of system are gained

    為了進一步的降低系統的規模，本文還就基於硬判決解調的多進制擴頻系統的性能進行分析和研究，得出了同步捕獲性能和誤比特性能與用戶數及信噪比的關系公式，並將其與其它幾種系統進行了比較，得出了有關的結論。
  9. Then, introducing something about spread spectrum technique. and deciding to select direct - sequence spread spectrum ( ds ) in underwater acoustic communications by comparing ds to fh according to the properties of underwater acoustic channels. after that, discussing something about rake receiver, simulating the path - search algorithms, synchronization circuits and rake receiver in low speed underwater acoustic communications and analyzing some major factors influencing the performance of systems

    然後介紹了rake接收技術的基本原理，並對rake接收系統中的路徑搜索和同步系統進行了討論和模擬分析，另外還對rake接收技術在低速水聲通信系統中的應用作了模擬分析，並討論了一些影響rake接收系統性能的主要因素。
  10. Enhanced variable rate codec speech service option 3 for wideband spread spectrum digital systems

    寬帶頻譜擴展數字系統用增強的可變率編譯碼器語音服務選擇3
  11. Evrc 3 software distribution for tia - 127 - a - enhanced variable rate codec speech service option 3 for wideband spread spectrum digital systems

    Tia - 127 - a的軟體配置.寬帶頻譜擴展數字系統用增強的可變率編譯碼器
  12. Ss - ffh distribution automation using distribution line carrier systems - part 5 - 5 : lower layer profilers - spread spectrum - fast frequency hopping ss - ffm profile

    採用配電線載波的配電自動化.第5 - 5部分:低層協議集.快速跳頻擴頻通信
  13. The technology of direct sequence spread spectrum / code division multipul access ( dsss / cdma ) are applied in the broadband code division multiplex wireless communication systems, which means transmitting data at the rate of 2. 048mbps using four e1 lines within the band of 20mhz. in this paper, the theory of the whole debice is first analysized specified for the system asic design and optimizing its performance

    寬帶碼分復用無線傳輸系統是採用直接序列擴頻/碼分多址（ dsss / cdma ）技術，在20mhz頻帶內實現四路2 . 048mbps的e1鏈路數據速率的無線傳輸。本文首先分析了整個數傳設備實現原理，針對系統asic設計和優化整機集成性能出發，提出並實現了基於fpga控制pm4314e1晶元的介面模塊完成對e1鏈路信號的監控和告警功能的改進方案。
  14. Pseudo - random sequences with optimal properties such as correlation, high linear spans, balance and long period are widely used in cdma system, spread spectrum and hopping communication systems

    具有優良相關性，大線性復雜度，平衡性，長周期的偽隨機序列廣泛應用於cdma系統，擴跳頻通信系統。
  15. Acquisition and code tracing for spread spectrum communication systems

    擴頻通信系統相位的捕獲與跟蹤技術
  16. An algorithm for the suppression of narrowband interference in the direct sequence spread - spectrum ( dsss ) systems is presented

    摘要提出了直接序列擴頻通信系統中抑制窄帶干擾的一種演算法。
  17. This paper describes a spread spectrum receiver, which is equipment in self - determination outer measuring systems. it consists of two parts : fast capture and track systems. its main function is receiving capture scout demodulation and transmit spread spectrum signal coming from the objects

    本論文所研究的擴頻接收機是自主外測系統中的關鍵設備，由快捕和跟蹤兩部分組成，其主要功能是對來自目標的擴頻信號進行接收、捕獲、跟蹤解調和轉發。
  18. Short message services for spread spectrum systems

    頻譜擴展系統簡訊服務
  19. Service option standard for wideband spread spectrum systems

    寬帶擴頻系統的業務選項標準
  20. Spread spectrum systems

    分散光譜系統
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