瑞利近似 的英文怎麼說
中文拼音 [ruìlìjìnsì]
瑞利近似
英文
rayleigh approximation- 瑞 : Ⅰ形容詞（吉祥） auspicious; luckyⅡ名詞1 （瑞玉） a jade tablet used as a token of authority and g...
- 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
- 瑞利 : 1 rayleigh （本名 john william strutt 1842 1919 英國物理學家及數學家 獲1704年諾貝爾物理獎）2 rayl...
- 近似 : approximate; similar; approach; approximation; roughness; propinquity
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The condition, under which the paraxial approximation is valid, is given. 4. starting from the rayleigh diffraction integral, the propagation equation of ultrashort pulsed beams in dispersive media has been derived without making the paraxial approximation and slowly varying envelope approximation ( svea ), which allows for relatively large angles
從瑞利衍射積分公式出發，未作慢變振幅近似和近軸近似的條件下，導出了等衍射長度超短脈沖高斯光束在色散介質中非近軸傳輸方程，可用來處理色散介質較大角度的傳輸。Based on the optimal sinr beamforming method, two slot allocation algorithms for asama, called as point - by - point optimizing ( ppo ) and global optimizing ( go ), are presented
對asama協議的通道利用率進行了近似分析，以on / off模型為業務源，在平坦瑞利衰落通道中對協議性能進行了模擬。The effectivity of the approximation of rayleigh wave in semi - infinite media to the plane mode in the stator transducer of saw motor with finite thickness ( much bigger than the wavelength of the saw ) is evaluated first time by us
首次探討了用瑞利波近似表面彈性波馬達定子換能器（厚度遠大於表面彈性波波長）平板振動模式的有效性。Based on these advantages we analyze the performance of constant - power variable - rate m - qam schemes for spectrally efficient data transmission over nmf channels. by introducing the adaptive modulation approach, we gain two things : 1 ) the error rate is kept at a constant level. 2 ) the achievable spectral efficiency comes within 5 db of the shannon capacity limit. at the last chapter, the presentation of a single base station and a single mobile scenario proved the feasibility of adaptive schemes
然後作者的精力轉入通道的自適應方案的研究中，首先通過研究發現nakagami衰落因子的適當調整可以近似於常見的瑞利衰落和萊斯衰落，接著研究在無線通道中採用三種不同自適應方案時的通道容量，研究表明速率的調整是增加通道容量的關鍵，在此基礎上，著重研究了離散變速率qam的情況，表明這種調制方案無論在頻帶利用率還是在系統平均誤碼率比其它情況提高很多。分享友人