The iso / mpeg - audio layer iii digital audio compression scheme is the most powerful of the three audio compression algorithms standardized in iso / mpeg dis - 111 72 . even at very low bit - rate of only 64kb / s , layer iii is one of the most excellent compression tools for applications such as real - time network radio and high fidelity music . this paper describes a study on algorithm simulation of mpeg / audio compression layer iii Mpeg / audiolayer提供了iso / mpegdis - 11172標準的三個音頻壓縮方案中最強的壓縮能力,即使工作于64kbps ,仍能保證高品質的音響效果,是需要以低碼率傳送數字高保真音頻信號的應用領域的理想工具。
It uses the new traffic matrix , current virtual topology situation and physical topology situation as input , compute a new virtual topology as output under the constraint which is the number of the different lightpahts between the old and new virtual topologies is not larger than the parameter nrange . in this chapter , i have implemented the algorithm by myself and a thoughfull study of two key procedures has been studied and the result of the algorithm simulation has been analyzed . we can get a new virtual topology by the virtual topology reconfiguration 我們通過虛拓撲重配置算法得到了一個新的虛拓撲,但新舊虛拓撲的過渡仍然是一個很關鍵的問題,因為在新舊虛拓撲的過渡過程中會對上層的業務產生很大的業務中斷影響,因此找到一個合適的wdm光網絡拆建光路的信令順序也是非常必要和具有現實意義的,本文第四章我們對一種光網絡虛拓撲過渡過程算法進
Based on the analysis of the first - order modulator and the structure of the second - order modulator , second - order modulator is achieved in matlab and dsp , which improves the ability of the noise - shaping . this thesis discusses relevant theories , provides algorithm simulation and how to realize the system , then sums up the points that are worthy of noticing and proposes some suggestions for the later part of the project 本文詳細介紹了該系統平臺的設計思想,對每個模塊的工作原理進行了討論,并對系統做了算法仿真,提出了利用dsp產生激勵信號的具體方法,最后總結了項目的進展情況,提出了需要改進的工作和項目的發展方向。
Moreover , close - form expressions for the power spectral density and acpr of cdma signal passed through a nonlinear power amplifier are derived using the power series and statistical model of cdma signal . the comparison computer between algorithm simulation and practical data or experimental data derived using ads proves the validity 同時基于cdma信號的時域數學模型和功率放大器的冪級數模型,具體推導出cdma信號的功率譜密度和acpr的數學表達式,并將其算法仿真結果與實測結果以及ads實驗仿真結果相比較,驗證其正確性。
Analyzing the rules and features of the crew scheduling problem in china with emphasis on the experience and measures in manual shift arrangement of civil airlines , consequently proposing the model and methods for automatic scheduling problem ; 2 . fulfilling the automatic generation of crew task through algorithm simulation based on the current flight information and shift arrangement rules of hainan airlines ; 3 . comparing the simulating result to the practical manual result and testifying the method ’ s feasibility and validity 本文主要作了以下幾個方面的研究工作:一是整理分析了國內機組排班的規則和特點,重點分析了國內某航空公司手工排班的經驗和方法,并在此基礎上提出了實現自動機組任務配對的模型和方法;二是以國內航空公司現行的航班資料和排班準則為基礎,通過算法的模擬實現,實現了機組任務配對的自動產生;最后是將模擬的結果與實際的手工排班結果進行比較分析,證明此方法是可行并且有效的。