reduction carrier 中文意思是什麼
reduction carrier
解釋
還原載體-
Reduction of licence fee for the mobile carrier licences
調低移動傳送者牌照牌照費的諮詢文件 -
Public consultation on reduction of licence fee for the carrier licences
調低傳送者牌照的牌照費公眾諮詢 -
Multiband transmission permits a reduction in error probability in exchange for at least a twofold increase in bandwidth and carrier power
多頻帶寬傳輸能降低誤差概率，但其代價是速度及載波功率至少增加一倍 -
We studied the mechanism of the visible light - induced domain switching in the lithium niobate crystals, and considered that the main factor is the movement of light - induced carrier, which modified the local electric field in the crystals and then resulted in the reduction of the domain switching voltage
探尋了可見光誘導鈮酸鋰晶體疇反轉的形成機制，認為光誘導晶體疇反轉的主要原因是光激載流子遷移改變了晶體內部的局域電場，造成了晶體極化反轉電壓的降低。 -
Effect of the carrier of - zeolite on the reduction olefin catalysts performance by water - steaming treatment
沸石載體對降烯烴催化劑性能的影響 -
Consultation on proposed reduction of licence fee for fixed carrier licences operating external telecommunications services only
調低只提供對外服務的固定傳送者牌照費諮詢 -
Space - time block codes ( stbc ) based on orthogonal design has attracts enough attentions in its applications in mimo - ofdm systems for its full diversity exploiting and low coding / decoding complexity. these applications include not only system performance improvement, but also reduction of the peak to average power ratio in mimo - ofdm systems. under these backgrounds, this paper first studies space - time block codes under the single carrier, flat fading situation, discusses the encoding / decoding principle and its performance under different channels. then, the author focused on the performance of space - time codes under time selective and frequency selective channels, uncovered the fundamental cause of how maximum doppler shift and power delay profile influences the performance of space - time codes through deduction and simulation
在上述背景下，本文以單載波，平坦衰落通道下的空時分組碼為切入點，深入分析了其編譯碼原理和在不同通道情況下的性能;以此為基礎，後文展開了對空時分組碼在多載波，時間選擇性和頻率選擇性衰落通道下的性能研究，通過理論推導和充分的模擬，揭示了空時/頻分組碼在時頻選擇性衰落通道中的性能變化的根本原因;在以上對多載波系統中空時分組碼的研究的過程中，作者發現了空時分組碼在降低系統峰平比方面應用的可行性，提出了一種降低峰平比的新方法。
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