Wavelength division multiplexing (WDM) refers to a multiplexing and transmission
scheme in optical telecommunications fibers where different wavelengths, typically
emitted by several lasers, are modulated independently (i.e., they carry independent
information from the transmitters to the receivers). These wavelengths are then
multiplexed in the transmitter by means of passive WDM filters, and likewise they
are separated or demultiplexed in the receiver by means of the same filters or
coherent detection that usually involves a tunable local oscillator (laser).
資源簡介：Wavelength Division Multiplexing (WDM) refers to a Multiplexing and transmission scheme in optical telecommunications fibers where different Wavelengths, typically emitted by several lasers, are modulated independently (i.e., they carry ind...
上傳時間： 2020-06-01
上傳用戶：shancjb
資源簡介：Orthogonal Frequency Division Multiplexing(OFDM) signal simulation
上傳時間： 2014-01-10
上傳用戶：himbly
資源簡介：Analysis and Simulation of a Digital Mobile Channe Using Orthogonal Frequency Division Multiplexing
上傳時間： 2016-05-13
上傳用戶：ainimao
資源簡介：ORTHOGONAL FREQUENCY Division Multiplexing FOR WIRELESS COMMUNICATIONS
上傳時間： 2016-11-05
上傳用戶：songrui
資源簡介：This program generates OFDM (Orthogonal Frequency Division Multiplexing) signal and its spectrum. Also the guard interval (GI) is inserted.
上傳時間： 2014-01-16
上傳用戶：daoxiang126
資源簡介：orthogonal frequency Division Multiplexing
上傳時間： 2013-12-23
上傳用戶：壞天使kk
資源簡介：OFDM(Orthogonal Frequency Division Multiplexing)
上傳時間： 2014-01-22
上傳用戶：ruixue198909
資源簡介：A MATLAB program has been written to investigate Orthogonal Frequency Division Multiplexing (OFDM) communication systems. This program is valuable for future researchers simulating systems that are too theoretically complex to analyze. Si...
上傳時間： 2013-12-09
上傳用戶：redmoons
資源簡介：Orthogonal frequency Division Multiplexing? (OFDM) has been shown to be an effective technique to combat multipath fading in wireless channels. It has been and is going to be used in various wireless communication systems. This book gives ...
上傳時間： 2020-05-31
上傳用戶：shancjb
資源簡介：近幾年來，OFDM(Orthogonal Frequency Division Multiplexing)技術引起了人們的廣泛注意，根據這項新技術，很多相關協議被提出來。其中WiMax(Wireless MetropolitanArea Networks)代表空中接口滿足IEEE 802.16標準的寬帶無線通信系統，IEEE標準在2004年定義了...
上傳時間： 2013-07-31
上傳用戶：1757122702
資源簡介：正交頻分復用(Orthogonal Frequency Division Multiplexing，OFDM)技術是一種多載波傳輸技術，它的基本思想是在頻域內將給定信道劃分成幾個相互正交的子信道，每個子信道使用一個子載波進行調制，各子載波并行傳輸。該技術可以有效提高頻譜利用率，能夠對抗多...
上傳時間： 2013-05-20
上傳用戶：Ruzzcoy
資源簡介：正交頻分復用(OnIlogonaJ Frequency Division Multiplexing，OFDM)技術通過將整個信道分為多個帶寬相等并行傳輸的子信道，通過將信息經過子信道獨立傳輸來實現通信，子信道的正交性可以保證最大限度的利用頻譜資源。OFDM系統通過循環前綴來消除符號間干擾(ISI...
上傳時間： 2013-06-06
上傳用戶：yyyyyyyyyy
資源簡介：正交頻分復用(OFDM，Orthogonal Frequency Division Multiplexing)技術作為一種可以有效對抗信號波形間干擾的高速傳輸技術，引起了廣泛關注。它利用許多并行的、傳輸低速率數據的子載波來實現高速率的通信。它的特點是各子載波相互正交，所以擴頻調制后的頻譜...
上傳時間： 2013-06-29
上傳用戶：水瓶kmoon5
資源簡介：選擇映射法（SLM）和概率類算法都可以降低OFDM （Orthogonal Frequency Division Multiplexing）系統的PAPR（Peak to Average Power Ratio），傳統SLM算法自身較為復雜，但由于其優良的性能，棄之可惜。研究表明，SLM算法和限幅類算法在性能上具有一定的互補...
上傳時間： 2013-11-22
上傳用戶：xinhaoshan2016
資源簡介：正交頻分復用技術（Orthogonal Frequency Division Multiplexing， OFDM）非常適合高速通信系統，但存在高峰均功率比（PAPR）的問題。對OFDM系統中如何降低PARR的問題進行了研究，討論了降低PAPR的主要方法，重點分析了選擇性映射法（SLM），并在此基礎上提出...
上傳時間： 2014-01-23
上傳用戶：zwei41
資源簡介：Abstract: While many questions still surround the creation and deployment of the smart grid, the need for a reliablecommunications infrastructure is indisputable. Developers of the IEEE 1901.2 standard identified difficult channel condition...
上傳時間： 2013-10-18
上傳用戶：myworkpost
資源簡介：正交頻分復用 （Orthogonal Frequency Division Multiplexing，OFDM）是一種多載波調制技術，由于具有良好的抗多徑干擾性能，適用于高速數據傳輸，OFDM成為近年來人們研究的熱點。但是其峰均比較高，應用受到了限制，因此有必要研究降低PAPR的方法。本文首先...
上傳時間： 2013-11-19
上傳用戶：moshushi0009
資源簡介：This paper considers semiblind channel estimation and data detection for orthogonal frequency-Division Multiplexing (OFDM) over frequency-selective fading channels.
上傳時間： 2014-12-07
上傳用戶：coeus
資源簡介：This project aim was to build wireless software modem for data communication between two computers using an acoustic interface in the voice frequency range (20Hz– 20,000Hz). The transmitting antenna is a speaker (frequency response of: 9...
上傳時間： 2014-05-29
上傳用戶：wangdean1101
資源簡介：OFDM Modem Applications • Digital Video Broadcast (DVB) • Digital Audio Broadcast (DAB) • Broadband Wireless Access (802.16x) • Wireless LAN (802.11x & HiperLAN) Orthogonal OFDM Sub-carriers Orthogonal Frequency Di...
上傳時間： 2016-03-23
上傳用戶：cc1
資源簡介：OFDM(Orthogonal Frequency Division Multiplexing)即正交頻分復用技術，實際上OFDM是多載波調制的一種。其主要思想是：將信道分成若干正交子信道，將高速數據信號轉換成并行的低速子數據流，調制到在每個子信道上進行傳輸。正交信號可以通過在接收端采用相關...
上傳時間： 2015-02-17
上傳用戶：hongyun288
資源簡介：This book gives a comprehensive overview of the technologies for the advances of mobile radio access networks. The topics covered include linear transmitters, superconducting filters and cryogenic radio frequency (RF) front head, radio over...
上傳時間： 2020-05-26
上傳用戶：shancjb
資源簡介：Emerging technologies such as WiFi and WiMAX are profoundly changing the landscape of wireless broadband.? As? we evolve into future generation wireless networks, a primary challenge is the support of high data rate, integrated multi- med...
上傳時間： 2020-05-26
上傳用戶：shancjb
資源簡介：All wireless communication standards, existing and under development, adopt or consider adopting orthogonal frequency-Division Multiplexing (OFDM) as the modulation technique. It is clear that OFDM has become the definitive modulation schem...
上傳時間： 2020-05-31
上傳用戶：shancjb
資源簡介：Before delving into the details of orthogonal frequency Division Multiplexing (OFDM), relevant background material must be presented first. The purpose of this chapter is to provide the necessary building blocks for the development of OFDM ...
上傳時間： 2020-05-31
上傳用戶：shancjb
資源簡介：Emerging technologies such as WiFi and WiMAX are profoundly changing the landscape of wireless broadband.? As? we evolve into future generation wireless networks, a primary challenge is the support of high data rate, integrated multi- med...
上傳時間： 2020-05-31
上傳用戶：shancjb
資源簡介：面向 5G 的新型多載波傳輸技術比較 摘 要: 介紹了幾種面向 5G 的新型多載波傳輸技術: 濾波器組多載波( FBMC，Filter Bank Multicarri- er) 、通用濾波多載波( UFMC，Universal Filtered Multicarrier) 和廣義頻分復用( GFDM，Generalized Fre- quency Divisio...
上傳時間： 2022-02-25
上傳用戶：kingwide
資源簡介：5G通信系統中massive-MIMO-FBMC技術的結合概述摘要為了應對第五代移動通信（5G）中更高數據率和更低時延的需求，大規模MIMO （massive multiple-input multiple-output）技術已經被提出并被廣泛研究。大規模 MIMO技術能大幅度地提升多用戶網絡的容量。而在5G...
上傳時間： 2022-02-25
上傳用戶：
資源簡介：正交頻分復用（OFDM，Orthogonal Frequency Division Multiplexing）是當前一種非常熱門的通信技術。它即可以被看作是一種調制技術，也可以被看作是一種復用技術。由于它具有抗多徑衰落和頻譜利用率高的特點，因此被廣泛應用于高速數字通信領域，比如應用于IE...
上傳時間： 2022-07-29
上傳用戶：
資源簡介：Half-Wavelength dipole antenna (FDTD simulation)
上傳時間： 2014-08-14
上傳用戶：hopy
