The signal suffers an attenuation loss l Received power PR= PT/L Received snr=E,/No, Eb=Pr/Rb Antennas are used to compensate for attenuation loss Capture as much of the signal as possible

Source coding Source Encode Channel Alphabet alphabet Source symbols Letters of alphabet, ASClI symbols, English

Sampling Sampling provides a discrete-time representation of a continuous waveform Sample points are real-valued numbers In order to transmit over a digital system we must first convert into discrete valued numbers

Sampling Given a continuous time waveform, can we represent it using discrete samples? How often should we sample? Can we reproduce the original waveform?

第一节 系统工程方法 第二节 评价原理与方法 第三节 博弈理论与方法

第一节 物流的概念和职能 第二节 物流的分类 第三节 物流经济活动的双重性 第四节 现代物流的发展趋势 第五节 物流系统工程

Administrative matters Instructors: Eytan Modiano Meeting times: Tuesdays and Thursdays Text: Communications Systems engineering Proakis and salehi Grading 10% weekly Homework Assignments 30% each of 3 exams Final exam during final exam period

西北工业大学管理学院：《系统工程》课程教学资源（PPT课件）第三章 结构模型化技术

Collaborate Document Management Plan and design up front Create a short model section for information content and order Create a layout template Create a document control system for revisions Accept individual responsibility and deadlines

Uniqueness of Satellite Manufacture Small production runs Extreme operational environments Limited repair/replace options after launch High product cost and importance High cost test environment Highly coupled designs minimize weight and maximize performance but yield high complexity