Abstract-The effect of the companding PROCESS on QAM signals has been under investigation for the past several years. The compander, included in the PCM telephone network to improve voice performance, has an unusual affect on digital QAM data signals which are transmitted over the same channel. The quantization noise, generated by the companding PROCESS which is multiplicative (and asymmetric), degrades the detectability performance of the outermost points of the QAM constellation more than that of the inner points. The combined effect of the companding noise and the inherent white gaussian noise of the system, leads us to a re-examination of signal constellation design. In this paper we investigate the detectability performance of a number of candidates for signal constellations including, a typical rectangular QAM constellation, the same constellation with the addition of a smear-desmear operation, and two new improved QAM constellation designs with two-dimensional warpi
标签： investigation Abstract-The companding the
上传时间： 2013-12-20
上传用户：英雄
audio PROCESS audio proce
上传时间： 2016-06-21
上传用户：talenthn
可在Intel x86上执行的最小OS,完全用组语撰写 可做DISK IO,PROCESS Scheduling...等
标签： Scheduling PROCESS Intel DISK
上传时间： 2013-12-18
上传用户：熊少锋
this book mainly shows us how to PROCESS digital inmages by Visual C
标签： digital inmages PROCESS Visual
上传时间： 2014-01-02
上传用户：cx111111
以上代码设置不了系统时间的原因：因为date并非是一个实际进程..所以PROCESS没办法返回。。 如果真要那种设的话。你需要建一个文件。。用文件来设时间。。因为文件是一个真正的进程
上传时间： 2014-01-20
上传用户：dragonhaixm
A book describing a overall PROCESS of developing Eclipse RCP proce
标签： describing developing Eclipse overall
上传时间： 2014-01-24
上传用户：66666
Behavior Analysis and Game Theory Modeling in a Peer Code Review PROCESS - v1.doc
标签： Behavior Analysis Modeling PROCESS
上传时间： 2016-08-19
上传用户：haohaoxuexi
This file contains a summary of what you will find in each of the files that make up your PROCESS application.
标签： contains PROCESS summary files
上传时间： 2014-01-25
上传用户：wang0123456789
introduced the filter design PROCESS in TI s DSP, Include some real example for filter design
标签： filter design introduced Include
上传时间： 2016-09-05
上传用户：努力努力再努力
This research project evaluates startup times of the linux boot PROCESS from power-on until user login. Time consuming parts of the boot PROCESS are investigated and methods how to speed up the whole PROCESS are discussed.
标签： evaluates research power-on project
上传时间： 2013-12-18
上传用户：sqq
