universal carrier 中文意思是什麼

universal carrier 解釋
通用運輸工具
  • universal : adj 1 宇宙的,萬有的,萬物的;完全的,絕對的;全世界的。 2 人類全體的,萬人的;全面的,普及的,普...
  • carrier : n 1 運送人,搬夫;負荷者;使役,〈美國〉信差,郵遞員;送報人;〈英國〉運輸行,運輸業者。2 傳書鴿...
  1. Universal bulk carrier ub

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  2. This dissertation adopts a universal digital ds / dmpsk modulation and demodulation scheme which is based on fpga. this scheme adopts quadrature balanceable modulation, intermediate frequency sampling, digital matched filtering, delay differential demodulation techniques and so on. it directly processes the digital signals on intermediate frequency without down - conversion, and doesn ’ t need pseudo random codes synchronization and carrier wave extraction circuits

    本文採用了一種基於fpga的通用數字調制解調方案,該方案在調制端採用了正交平衡調制技術,在解調端採用了中頻帶通采樣、數字匹配濾波、延時差分解調等技術,直接在中頻上進行數字信號處理,不需要進行下變頻,也不需要增加額外的偽隨機碼同步捕獲和載波提取電路。
  3. Universal bulk carrier

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  4. Under the same restriction of a universal sdr hardware platform, the demodulation of linear modulated waveform, continuous phase ( no - linear ) modulated waveform, and multi - carrier modulated waveform, are investigated. corresponding to those three modulation schemes, bust mode mpsk, omsk, and ofdm signals are taken as the examples to implement a multi - mode sdr receiver, and results are presented

    本文在軟體無線電通用硬體平臺結構下,分析了線性調制方式、非線性連續相位調制方式和多載波調制的軟體接收機實現問題,分別以突發模式mpsk調制、 gmsk調制、 ofdm調制模式為對象,給出了具體的多模式接收實現方法和模擬結果。
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