frequency - division multiplexing造句

• Fe frequency-division multiplexing
  频分复用
• frequency-division multiplexing
  频分复用
• Multicarrier orthogonal frequency-division multiplexing ( ofdm ) systems have been widely researched in recent years because of its good anti-multipath characteristic when easily equalized
  摘要近年来，多载波ofdm系统因其均衡简单且能有效地抗多径干扰而受到广泛地研究。
• Taking many uncertain factors in mobile communication channel into account, ofdm ( orthogonal frequency-division multiplexing ) is one of the promising techniques that meet such requirements with reasonable complexity
  由于移动信道的多种不确定因素，正交频分复用(ofdm)技术成为适应这种信道环境的传输技术之一。
• These limit its application in ever-increasing communication demand . this thesis focuses on some technical difficulties encountered in the long distance wireless communication and tackles the task by applying ofdm ( orthogonal frequency-division multiplexing ) techniques in the communication system . this hence improves the overall communication system's performance by overcoming the effects such like multi-path fading and doppler spread in the frequency domain
  本文主要从调制技术方面入手，针对无线远距离通信信道的一些问题，将正交频分复用(ofdm)技术应用于超短波无线远距离移动通信系统，克服了超短波无线远距离移动通信中所面临的多径衰落和多普勒频移等因素的影响。
• Chapter 1 gives a brief survey of the development of broadband access networks, after the introduction the main technology of access networks, we give out the new in-home power line networking technology based on orthogonal frequency-division multiplexing ( ofdm ), and studies the general content of homeplugl . o protocol, focusing on the physical layer and mac layer specifications of the protocol
  第一章介绍了宽带接入网络的发展，着重介绍了基于正交频分复用(ofdm)的室内电力线载波通信网络技术，给出homeplug1.0协议规范，重点在于物理层和mac层技术规范。
• On the other hand, recent advances in communication and modulation methodologice, as well as in adaptive digital signal processing and error detection and correction, have opened the way for the development of effective medium access control and physical layer protocols that support power line communications ( plc ) networks operating at speeds comparable to those obtained from specially wired and more recent wireless local area network in mid-2001, an industrial standards organization called the homeplug powerline alliance, originally founded by 13 companies including cisco, motorola, intel, panasonic, and texas instruments, announced the completion of the homeplugl . o specification for a l . 0mb / s class in-home power line networking technology based on orthogonal frequency-division multiplexing ( ofdm )
  但是，近年来通信和调制技术的发展，特别是自适应数字信号处理和错误检测及纠正技术，使电力线通信技术出现新的mac层和物理层协议，其性能可以和一些专用有线网络以及最近十年流行的无线局域网技术想媲美。在2001年，一个由13个公司(包括cisco，motorola,intel，panasonic，andtexasinstruments)组成的组成的标准组织??homeplugpowerline联盟，颁布了完整的homeplug1.0规范，改规范使基于正交频分复用技术，主要针对10mbs室内电力线网络技术。