frequency division modulation 中文意思是什麼

frequency division modulation 解釋
頻率分多路調制
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  • division : n 1 分，分開，分割；分劃，區分。2 分配；分派。3 分裂，（意見）不一致，傾軋。4 區域；〈英國〉選區...
  • modulation : n 調整，調節；（聲調的）抑揚，變化；【音樂】轉調，變調；【無線電】調制。 amplitude modulation 振...
  1. Orthogonal frequency division multiplexing ( ofdm ) is a multi - carrier modulation method

    正交頻分多路復用是一種多載波調制技術。
  2. On the other hand, recent advances in communication and modulation methodologice, as well as in adaptive digital signal processing and error detection and correction, have opened the way for the development of effective medium access control and physical layer protocols that support power line communications ( plc ) networks operating at speeds comparable to those obtained from specially wired and more recent wireless local area network in mid - 2001, an industrial standards organization called the homeplug powerline alliance, originally founded by 13 companies including cisco, motorola, intel, panasonic, and texas instruments, announced the completion of the homeplugl. o specification for a l. 0mb / s class in - home power line networking technology based on orthogonal frequency - division multiplexing ( ofdm )

    但是，近年來通信和調制技術的發展，特別是自適應數字信號處理和錯誤檢測及糾正技術，使電力線通信技術出現新的mac層和物理層協議，其性能可以和一些專用有線網路以及最近十年流行的無線局域網技術想媲美。在2001年，一個由13個公司（包括cisco ， motorola ， intel ， panasonic ， andtexasinstruments ）組成的組成的標準組織? ? homeplugpowerline聯盟，頒布了完整的homeplug1 . 0規范，改規范使基於正交頻分復用技術，主要針對10mb s室內電力線網路技術。
  3. Ofdm ( orthogonal frequency division multiplexing ) is a multi - carrier data modulation technology. though the conception of ofdm was brought forward many years ago, it is only in recent years that people recognize it as an excellent way of high speed, bidirectional, wireless data communication

    正交頻分復用（ ofdm ）技術是一種多載波數據調制技術，雖然ofdm的概念已經存在了很長時間，但是直到最近隨著多媒體業務的發展，它才被人們認識到是一種高速雙向無線數據通信的良好方法。
  4. Orthogonal frequency division multiplexing ( ofdm ) is a suitable digital modulation technique for broadband systems

    正交頻分復用（ ofdm ）技術是一種適用於寬帶系統的多載波數字調制技術。
  5. Orthogonal frequency division multiplexing is an effective multi - carrier modulation technique, in which synchronization is one the key ingredients

    而同步技術是ofdm系統實現的關鍵技術之一。
  6. In next mobile communication system to suffice more and more high - speed data service and demand of qos ( quality of service ) many new wireless link layer transport technologies are going to be used such as mimo ( multiple input multiple output ), ofdm ( orthogonal frequency division multiplexing ), channel coding and acm ( adaptive coding modulation ) etc. low density parity check ( ldpc ) codes were first discovered in 1960 ’ s which belong to linear block codes with their parity matrix being sparse

    下一代移動通信系統為了滿足移動用戶對高速、寬帶數據傳輸業務不斷增長和更高服務質量的要求，採用了許多新的無線鏈路傳輸技術，包括多天線發射和接收技術、正交頻分復用技術、通道糾錯編碼技術和自適應編碼調制技術等。上世紀60年代提出的低密度校驗碼，是一種校驗矩陣為稀疏矩陣的線性分組碼。
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