G.711 is an ITU-T standard for audio companding. It is primarily used in telephony.
标签： companding primarily telephony standard
上传时间： 2016-06-15
上传用户：jackgao
QAM，很辛苦 ，很辛苦的，还再加上很辛苦
标签： QAM
上传时间： 2016-06-16
上传用户：kristycreasy
完成一个利用矩形信号星座图的M=16的QAM通信系统的MONTECARLO仿真，
标签： MONTECARLO QAM 16 矩形
上传时间： 2014-08-03
上传用户：liansi
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
本次试验是讨论单源点的最短路径问题:给带权有向图和源点V到G中其余各顶点的最短路径。
标签： 最短路径
上传时间： 2013-12-24
上传用户：66666
芯动G系列OEM中文说明书 GPS 接收机OEM 板中可以将卫星轨道参数、上次定位位置、时间和日期等数据保存在 静态存储器，接收机内部有备用电池来为存储器供电。
上传时间： 2016-06-21
上传用户：李彦东
这是一个用matlab来实现的QAM,QPSK程序，可显示星象图，调制解调的信号波形和频谱波形
上传时间： 2016-06-25
上传用户：gououo
SIMULINK实现QAM,来自韩国一本教材。
上传时间： 2016-06-26
上传用户：凌云御清风
S变换 C语言程序 由R.G.Stockwell 编写 包含了正反变换 以及希尔伯特变换正反变换
上传时间： 2014-01-04
上传用户：黄华强
各种QAM的解调程序
上传时间： 2013-12-30
上传用户：亚亚娟娟123
