A Measuring Technique of Amplifiers' Non-linear Characteristics with Digital Terrestrial Television Broadcasting Signals

DOI Web Site Web Site 3 Citations 5 References
  • Nagatsuka Mamoru
    Yokosuka Radio Communications Research Center, Communications Research Laboratory

Bibliographic Information

Other Title
  • 地上デジタル放送信号を使った増幅器の非線形特性測定方法
  • チジョウ デジタル ホウソウ シンゴウ オ ツカッタ ゾウフクキ ノ ヒセンケイ トクセイ ソクテイ ホウホウ

Search this article

Abstract

In dealing with digital terrestrial television broadcasting systems using OFDM, a spectrum measurement is usually used to check the extent of a transmitting amplifier's non-linearity effect. However, capturing both input and output signals and measuring the difference between them are necessary to identify the non-linear characteristics. A new technique to identify non-linear characteristics of an amplifier, which is assumed to follow the AM-AM / AM-PM conversion model, is described. Non-linear characteristics can be measured using this technique with only the output signal of an amplifier working during actual broadcasting. The process requires no special signals. An undistorted (input) signal is estimated using the conventional demodulating process. The characteristics of the two amplifiers were measured, and the results were compared with those of another identification technique. The characteristics derived from the two techniques were found to agree.

Journal

Citations (3)*help

See more

References(5)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top