fading loss 中文意思是什麼
fading loss
解釋
衰落損耗-
Sweetpotato storage root flesh contains the active compositions which can make the anthocyanins color fading, the pigment loss could reach more than 50 %
摘要甘薯薯肉內含有能使花青素分解退色的活性物質，在甘薯勻漿中可導致一半以上的色素損失，嚴重影響了色素提取效率。 -
As the application of rake receivers with multitaps is widely used in cellularcdma systems for exploiting path diversity, the closed - loop power control schemesshould make use of the multitap rake receivers for tracking the power variation dueto path loss, slow fading, and fast fading
同時，本文給出的自適應變步長閉環功率控制演算法利用rake接收機跟蹤通道的變化，與傳統的固定步長閉環功率控制相比獲得了較小的ebi0標準差。 -
Abstract : by comparing the channel capacities hetwem orthogonal space - time block coding and multi - antenna array system over rayleigh fading channel, some capacity loss for orthogonal space - time block coding is obtained, which is a function of the code rate, the rank of channel matrix and the number of transmitter and receive antennas, although the system of orthogonal space - time block codes is simple and easy to implemented. if is also shown that there is no capacity loss only if both the code rate and the channel matrix rank are all one
文摘:在研究瑞利衰落條件下正交空時分組編碼通道容量的基礎上，將其與多發送多接收天線系統的通道容量進行了比較.比較結果表明，正交空時分組碼雖編碼簡單，易於實現，但在通道容量方面存在較大的損失，損失的程度與編碼碼率、通道矩陣的秩及收發天線數等因素有關.進一步研究表明只有當編碼碼率和通道矩陣的秩都為1時，才沒有通道容量的損失 -
The significant capacity loss of the spinel limn2o4 during cycling hereby prevents its wider use as cathode materials for lithium secondary batteries. there are two main factors resulting in fading capacity and poor cyclability, one is the jahn - teller distortion of mn3 +, and the other is mn dissolution to electrolyte. the main objects of this paper are to resolved these key problems effecting on the performance of batteries
針對limn _ 2o _ 4正極材料在電化學循環過程中發生jahn - teller畸變和mn在電解液中溶解這兩個導致容量衰減和循環性能劣化的關鍵問題，分別採用陰陽離子復合摻雜和尖晶石晶粒表面包裹兩種措施，對尖晶石結構limn _ 2o _ 4正極材料進行了改性研究。 -
A simulation and modeling mechanism is studied and proposed for multirate transmission protocol. based on the wlan that adopts ofdm transmission technique, we first assumed that the small - scall fading and multipath in ofdm sub - channel is rayleigh, and large - scale path loss could be described by bi - linearity model, and then we analyzed the rationality
基於採用ofdm傳輸技術的wlan ，我們假設ofdm子通道的小尺度衰落服從rayleigh分佈，路徑損耗可以用雙線性模型描述，並對假設的合理性進行了分析，將決定速率切換的誤幀率等物理層性能參數和媒質控制協議有機地結合在一起，對多速率傳輸建模進行了有意的探索。 -
This article is a review of the status of china international relations studies, asserting that beneath the apparent flourishing of this field is a weakness of this discipline featuring the " loss of balance " in the context of pluralism, the " progressive " ideology and fading of sense of skepticism, the absence of the spirit of taking science as the cause, etc
摘要本文對中國國際關系學的現狀做了檢討與反省，認為在看到繁榮興盛外表的同時，必須承認這門學科發展的不充分性和其他缺陷，如多元化趨勢化下的「失重」問題， 「進步」意識和質疑意識淡漠的問題， 「以科學為業」之精神缺乏的問題，等等。 -
The propagation characteristics of underwater acoustic channels and their influences on long - range information transmission are studied thoroughly. based on the sonar equation, the optimal frequency band is abtained. from the calculation about transmission loss, the source level is forecasted. based on the random time varying channel theory, the fading characteristics of long - range underwater acoustic channels are analyzed
系統、深入地研究了水聲通道特性及其對水聲遠程信息傳輸系統的影響；從聲納方程出發，確定了系統的最佳工作頻段；在聲傳播損失計算的基礎上，給出了聲源級的預報；基於時變通道理論，描述了遠程水聲通道的衰落特性。 -
At the same time, analysis of effects of gaussian distributed and uniform distributed feedback error of the channel fading behavior on throughput performance of adaptive mqam reveals that the obvious throughput loss shall be observed as far as the error exceeds certain limit
同時，高斯分佈和均勻分佈的通道衰落信息反饋誤差對自適應mqam吞吐量性能影響的研究表明，當誤差超過一定程度時，自適應系統吞吐量性能明顯下降。 -
In this part, the two anterior chapters mainly discuss the various basic theories used by the designing for the propagation paths of the electric wave. the theories include the computation methods for the fade and the loss of various propagation paths and obstructions, the engineering estimation methods of the flat fading and frequency selected fading, the designing methods of space diversity and frequency diversity, etc. at the same time, the special designing method of the sea - across path is discussed in detail
本文首先闡述了微波中繼通信工程設計中的相關知識，其中前兩章主要論述了線路設計中所用到的種種理論基礎知識，包括對于各種路徑情況、障礙情況的衰落與損耗的不同計算方法，平衰落與選擇性衰落中斷率的估算方法，天線分集和頻率分集技術的理論知識和設計方法等等。
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