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Description: 摘要:正交频分复用(OFDM)是第四代移动通信的核心技术。该文首先简要介绍了OFDM基本原理,重点研究了理想同步情
况下,保护时隙(CP)和不同的信道估计方法在高斯信道和多径瑞利衰落信道下对OFDM系统性能的影响。在给出OFDM系
统模型的基础上,用MATLAB语言实现了整个系统的计算机仿真并给出参考设计程序。最后给出在不同的信道条件下,保
护时隙、信道估计方法对OFDM系统误码率影响的比较曲线,得出了较理想的结论。
-O FDM is the key techno logy of 4G in the field of mobile comm unication.In this article O FDM
ba sic p rinc ip le is briefly in troduced.Then,the influence of CP and d iffe rent channe l e stim a tion on the system
pe rfo rm ance is emp ha tica lly analyzed respectively in Gauss and R ayle igh fading channe ls in the cond ition of ideal
synchronization.B e sides,based on the given system mode l O FDM system is compu te r sim u la ted w ith MA TLAB
language and the refe rentia l design p rocedure is given.Fina lly,the B ER cu rves of CP and channe l e stim ation a re
given and comp ared.The conclusion is sa tisfac to ry.
Platform: |
Size: 9216 |
Author: 海之魂 |
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Description: AxPlayer是最新的Windows Mobile下的，播放控件
支持HTTP/MMS协议，支持除了rm / rmvb外的大部分格式
无缝集成swf播发，需要flash.dll，flash.dll不用注册就可被
集成(ODC技术)，只要放到程序目录下.
-Is the latest AxPlayer under Windows Mobile, the player controls to support the HTTP/MMS protocol, to support the addition to rm/rmvb format most of outside broadcast swf seamless integration, the need for flash.dll, flash.dll do not have to register can be integrated (ODC technology ), as long as the directory on the procedure.
Platform: |
Size: 1229824 |
Author: zhenxiaoyang |
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Description: windows mobile 环境下的播放rmvb电影的播放插件-windows mobile environment rmvb movie player plug-ins
Platform: |
Size: 872448 |
Author: you name |
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Description: 一个很不错的网页视频播放器件，采用Flash+Javascript的插件形式开发，简单小巧，支持手机端播放，可以很方便的集成到任何cms网站系统或自己开发的网站中，基本上支持了主流的音视频格式文件，喜欢的自己下载。
支持的格式有：.swf、.wmv、.asf、.wma、.mp3、.asx、.mid、.midi、.rm、.ra、.rmvb、.mp4、.mov、.avi、.wav、.ram、.mpg、.mpeg、flv。-A very good web video playback devices using Flash+ Javascript plug-in development, small and simple, support for mobile end play, can be easily integrated into any website cms system or develop their own websites, basically support the mainstream sound video format files to download their favorite.
Supported formats are: .swf, .wmv, .asf, .wma, .mp3, .asx, .mid, .midi, .rm, .ra, .rmvb, .mp4, .mov, .avi, .wav, .ram, .mpg, .mpeg, flv.
Platform: |
Size: 4711424 |
Author: Mark Chan |
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Description: 专门为PSP、IPOD、手机等移动视频设备设计，能将DivX, XviD, MOV, rm, rmvb, MPEG, VOB, DVD, WMV, AVI等视频转换为MP4/3GP/MTV格式。拥有无可匹敌的转换速度和视频质量，可调整视频分辨率、纵横比等(It is specially designed for mobile video devices such as PSP, IPOD, mobile phone, etc. It can convert DivX, XviD, MOV, rm, rmvb, MPEG, VOB, DVD, WMV, AVI and other video into MP4/3GP/MTV format. With unrivalled conversion speed and video quality, adjustable video resolution, aspect ratio, etc.)
Platform: |
Size: 3045376 |
Author: 雷雨2019 |
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