modulation limiting 中文意思是什麼

modulation limiting 解釋
調制限制
  • 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...
  • limiting : adj. 限制（性）的，有限制力的，起限定作用的〈不涉及性質的各種定語如： several, four 等〉。
  1. This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller

    本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上，將通信理論中的直接序列擴頻技術（ dsss ）用於解決低壓電力線通信的干擾問題，主要研究內容如下： （ 1 ）用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析，分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析，驗證dsss技術在本系統中的可行性； （ 2 ）由dsss技術對濾波系統的要求，根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路； （ 3 ）用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路，構造出低壓電力線載波通信系統，並採用atmel公司的單片機設計了接收和發射電路的微控制器； （ 4 ）分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗，並對結果進行分析，驗證了dsss技術對干擾信號的抑制作用。
  2. The new method is a modified pts method, and can make good compromise between performance and computational complexity. the dissertation explores, by means of computer simulation, how the conventional method based on amplitude - limiting and filtering affects the performances of wavelet packet modulation signals, and presents a new method, namely, selective mapping / amplitude limiting / filtering method, which proves to be effective, simple, and have better ber performance

    並基於自子波變換和時間、尺度解析度的概念，從理論和模擬實驗兩方面對通道建模和時間/尺度rake接收機進行了分析，並與傳統的kake接收機進行了比較，結果表明時間/尺度聯合分集能有效地克服高速衰落多徑通道的影響。
  3. Green - mode which provides off - time modulation to linearly decrease the working frequency under light - load conditions and power limiting which will turn off the transistor when peak current of inductor reaches the threshold current

    同時該電路集成了能在輕負載情況下自動降低頻率的綠色模式以及能在電感峰值電流過高時關斷調整管的功率限制模塊，降低了系統的功耗。
  4. In 1980 ' s, a new economic field - eco - economics - births. it provides the direction of society developments the ecosystem economics thinks the economic system is the second stage system of ecosystem or sub - system of environment, emphasizing mankind social economic activities have to obey natural ecosystem regulation, limiting economic scale in the resources supply of ecosystem system and the ability of wastes modulation

    生態經濟觀認為經濟系統是生態系統或環境的亞系統或子系統（ sub - system ） ，強調人類社會經濟活動必須服從自然生態規律，將經濟規模限制在生態系統的資源供給和廢棄物調節能力之內，以維護生態系統結構和功能的穩定性，從而保證人類社會的生命支持基礎和社會經濟的可持續發展。
  5. Then limiting load is decreased. ( 6 ) horizontal load can increase the coefficients of the modulation of moment when value of is little while decrease it when is large

    （ 6 ）在中支座截面相對受壓區高度較小時，有水平荷載的框架其彎矩調幅系數要大於只有豎向荷載的框架。
  6. In this paper, a pwm - controlled fault current limiter is proposed. it is composed of a limiting reactor and a compensator capacitor, which is in parallel with a pulse width modulation ( pwm ) switched reactor

    本文在總結前人研究成果的基礎上，提出了一種基於脈寬調制原理（ pulsewidthmodulation ，縮寫為pwm ）技術的故障限流器（ pwm - fcl ） 。
  7. The frequency difference sensitivity of the modulation mode and the ability to overcome distortion by limiting amplitude of the signal and to overcome interference also affect the performance, too. in this paper, the relationship between the ability to overcome interference and the modulation mode is discussed at first. then the characters in some aspects specif ' ed above of some common modulation mode such as mfsk mpsk ofdm are studied. on this base, some according solutions to the problem of the different frequency - hopping system are put forward. in the past half of this paper, the realization scheme, pcrforemance and improving measures of ofdm are studied

    本文首先較詳細地討論了跳頻抗干擾的能力與調制制度的關系，接著分別研究了幾種常用調制方式（ mfsk ， mpsk ， ofdm ）上述幾方面的性質，針對各跳頻系統存在的問題提出了相應解決方案，在本論文後半部分重點討論了ofdm跳頻系統的實現方案、性能及改進措施。
  8. Automatic modulation limiting

    自動調制限制線路
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