Quality estimation of PSK modulated signals

被引:14
作者
Celandroni, N
Ferro, E
Potorti, F
机构
[1] CNUCE, Inst. of National Research Council
[2] CNUCE Institute, Italian National Research Council
[3] CNUCE-CNR Institute, Pisa
关键词
D O I
10.1109/35.601742
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A very important problem in fade countermeasure systems is the need to detect signal quality quickly and accurately. In fact, the countermeasure has to be initiated before the signal degradation effect on the bit error rate is detected by the user. This article presents an overview of different methods to evaluate signal quality, which are based on the availability of soft quantized levels of PSK demodulated signals at the receiver. It is shown that this class of methods has a good theoretical performance. Also, an innovative procedure is presented which adapts one of the methods to some existing hardware, and tunes up a set of parameters in order to compensate for the fact that the hardware is to some extent impaired.
引用
收藏
页码:50 / 55
页数:6
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