| 1. | Three - channel transmission scheduling in wdm star single - hop networks
波分复用星形单跳网中3信道的传输调度问题 |
| 2. | Adjacent channel transmission
邻频道传输 |
| 3. | In this paper , we first introduce the development of high definition television in our country and the principle of cofdm technique , followed by comparing the two channel transmission standards between atsc and dvb - t for digital terrestrial television
本文介绍了高清晰度数字电视在国内的发展状况，并将国际上的两大数字电视地面广播信道传输标准atsc和dvb - t进行了比较，在此基础上进一步阐明cofdm传输系统的原理和特点。 |
| 4. | The transmission mechanism of electromagnetic wave in satellite communications is very complex . the author uses the statistical model that can delineate real satellite channel transmission characteristics better as the simulator ’ s rational , i . e . lms ( land mobile sattilite ) model
卫星通信信道电波传输机理非常复杂,课题采用了更能描述实际卫星信道传输特性的统计模型? ? lms ( landmobilesattilite )模型作为模拟器的理论基础。 |
| 5. | In order to combine the study of the ds - ss communication system ’ s availably jamming , the whole ds - ss communication system is modeled and simulated , including the modulation of the ds - ss signal , channel transmission , synchronal demodulation of signal and statistic of the bit error rate ( ber )
为结合直扩通信系统的有效干扰研究工作,建立了直扩系统从信号的调制产生,信道传输、信号同步解扩解调和误码率统计的全过程仿真系统。 |
| 6. | Chapter 3 studied the results that come from the combination of the multi - carrier transmission technology and the adaptive multilevel modulation technology in detail , and bringed up to apply the technology to wireless channel transmission . the feasibility and advantage been testified by computer simulink
第三章详细讨论了多载波传输和自适应多元调制相结合的效果，提出将这种技术应用于无线信道传输的想法并仿真证明其可行性和优越性。 |
| 7. | This paper analyzed p - persistent csma / cd protocol and proposed a new adaptive algorithm for the adjustment of the coefficient p by real - time channel traffic sensing based on the feedback control theory , i . e . , changing the value of p dynamically through the analysis of networks " flow to control the behavior of the stations sending data frames in the same collision domain , to keep the media channel in an optimal state and to enhance the channel transmission efficiency
该算法基于对网络流量的分析，在osi物理层通过信道信息量的在线实时检测，根据反馈控制的原理，在数据链路层动态地调整控制输入参数p ，从而控制站点发送分组数据帧的行为，使信道处于最佳的传输状态，提高信道的效率。 |
| 8. | As one of the key techniques of new generation mobile communication systems and broadband wireless communications systems , " adaptive transmission " technique can exploit potential channel transmission ability sufficiently so that it enables the systems to reach the maximum transmission capacity and reliability by dynamically adjusting transmission parameters according to channel estimation and traffic qos requirement
自适应传输技术是新一代移动通信和智能传输的核心技术之一。自适应调制是根据信道的实时状态以及业务的不同特性动态调整传输参数，从而可以充分挖掘系统的传输潜力，提高频谱利用率，以获得最大的传输容量和最高的可靠性。 |
| 9. | The paper introduced the monitoring and control device of coal mine based on the sopc technology , adopted fpga to realize the transaction and transmission of all kinds of signals of monitoring and control system , and used time multiplex to build transmission main , which improved capacity ad reliability of channel transmission
文章介绍了基于sopc技术的煤矿监控设备，设计了在fpga上实现各类监控系统信号的处理、传输，并利用时分复用来构建传输干线，提高了信道传输的容量和可靠性。 |
| 10. | This article briefly presented the principle of lower voltage power line carrier technology and spread spectrum technology , and discussed the advantage , the mode , the current state of spread spectrum technology applied to lower voltage power line carrier communication , and analyzed the channel transmission characters of lower voltage power line with mechanical contact
在本文中，简要阐述了低压电力线载波技术和扩频技术的原理，讨论了扩频技术在低压电力线载波通信中应用的优点、方式和现状，并通过大量实验，分析了带机械接触的低压电力线路的传输特性。 |
