图书馆订阅: Guest
Begell Digital Portal Begell 数字图书馆 电子图书 期刊 参考文献及会议录 研究收集
电信和无线电工程
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN 打印: 0040-2508
ISSN 在线: 1943-6009

卷:
卷 78, 2019 卷 77, 2018 卷 76, 2017 卷 75, 2016 卷 74, 2015 卷 73, 2014 卷 72, 2013 卷 71, 2012 卷 70, 2011 卷 69, 2010 卷 68, 2009 卷 67, 2008 卷 66, 2007 卷 65, 2006 卷 64, 2005 卷 63, 2005 卷 62, 2004 卷 61, 2004 卷 60, 2003 卷 59, 2003 卷 58, 2002 卷 57, 2002 卷 56, 2001 卷 55, 2001 卷 54, 2000 卷 53, 1999 卷 52, 1998 卷 51, 1997

电信和无线电工程

DOI: 10.1615/TelecomRadEng.v51.i6-7.90
pages 39-42

A Measuring Complex for Automatic Evaluation of Nonlinear Distortions

E. M. Rudy

ABSTRACT

In 1950 V.M. Wolf suggested (author certificate No. 90158TJSSR) a method for measuring nonlinear distortions in which frequency components in a narrow band are removed from the spectrum of the useful signal. At the receiving end the nonlinearity is estimated by the level of harmonics and combination frequencies detectable in the band containing no intelligence signal.
The spectra of human speech and musical instruments are characterized by a pronounced line structure, i.e. the major portion of energy is concentrated within a narrow frequency band [1]. The line spectrum signals can be used for nonlinear distortion evaluation by comparing them at the input and output of a communication channel [2]. The possibility has been implemented in a device that automatically selects of all the incoming signals those with a highly suppressed (or absent) predetermined frequency band.
Nonlinear distortions are estimated in terms of magnitudes of nonlinear products in a predetermined frequency band at the output of the communication channel (author certificate No. 1084997TJSSR). Different signals have different parts of their frequency spectra suppressed, thus nonlinear distortions can be estimated in different areas of the frequency band without distorting the signals transmitted through the communication channel.


Articles with similar content:

U Signal Propagation through Walls
Telecommunications and Radio Engineering, Vol.67, 2008, issue 6
V. Schejbal, M. Hajek, P. Bezousek, D. Cermak, Z. Nemec
Quasi-Optimum Algorithm for Radioholographic System Antenna Self-Focusing for reception as to Many Targets in the Presence of Additive and Multiplicative Disturbances
Telecommunications and Radio Engineering, Vol.51, 1997, issue 4
N. I. Matyukhin
COUPLING RADIATION LOSS IN THE MIRROR DIELECTRIC DISK RESONATOR. PART 2. MISMATCHED WAVEGUIDE COUPLING
Telecommunications and Radio Engineering, Vol.75, 2016, issue 2
A. I. Shubnyi, V. V. Glamazdin, V. N. Skresanov, M. P. Natarov
Transformation of the Electrodynamic Characteristics of the Quarter-Spherical Dielectric Resonator by the Coupling Slot in the Mirror
Telecommunications and Radio Engineering, Vol.67, 2008, issue 17
A. Ye. Kogut
Frequency Dependences of Scattering Matrices in the Resonance Domain
Telecommunications and Radio Engineering, Vol.55, 2001, issue 4
S. Y. Tolstel, V. I. Lutsenko