通信与电子信息科技英语完整版教学课件.ppt

; New words and phrases outcome n.结果，结局 statistics n.统计，统计数字（信息） statistic adj.统计上的；n.统计量 statistical  adj.统计的,统计学的 toss v.投,掷 die n.骰子(pl.dice) dice n.骰子;vi.掷骰子  intuitive adj.直觉的;直观的 intuitively adv.直觉地；直观地 analogously  adv.类似地,类比地  conceptually adv.概念地 ;Random Processes;Random Processes;Random Processes;Random Processes;Random Processes;Random Processes;Random Processes;Exercises;Exercises;;Exercises;Exercises;Exercises;Exercises;Exercises;多媒体通信技术 ;Channel Capacity;Channel Capacity;Channel Capacity;Channel Capacity;Channel Capacity;Channel Capacity;Channel Capacity;Channel Capacity;Channel Capacity;The derivation of Eq.(2.l) for the capacity of a gaussian channel is rather formidable and will not be undertaken. However, the result may be made to appear reasonable by the following considerations. Suppose that, for the purpose of transmission over the channel, the messages are represented by fixed voltage levels. Then, as the source generates one message after another in sequence, the transmitted signal s(t) takes on a waveform similar to that shown in Fig. 2.1. ;Ⅰ. Please translate the following words and phrases into Chinese. 1. physical syste 2. rise time  3. amount of information 4. in principle  5. gaussian channel 6. probability density  7. rootmeansquare 8. trade off  9. lower bound 1. equalizer  11. vice versa 12. upper limit  ;Ⅱ. Please translate the following words and phrases into English. 1. 通信理论 2. 香农定理 3. 信道带宽 4. 信号波形 5. 理想低通滤波器 6. 自相关函数 7. 无噪声高斯信道 8. 通信信道 9. 信息速率 1