Adaptive peak power reduction scheme controlling peak level based on adaptive algorithm

Autor:	Hiroyasu Sano, Hiroshi Kubo, Keishi Murakami
Rok vydání:	2006
Předmět:	Nonlinear system Spectral shape analysis Adaptive algorithm Computer Networks and Communications Orthogonal frequency-division multiplexing Bandwidth (signal processing) Electronic engineering Peak level Electrical and Electronic Engineering Radiation Effective radiated power Mathematics
Zdroj:	Electronics and Communications in Japan (Part I: Communications). 89:44-54
ISSN:	1520-6424 8756-6621
DOI:	10.1002/ecja.20244
Popis:	In this paper, based on an adaptive algorithm, an adaptive peak power reduction scheme (APPR) is proposed that can reduce the peak power and suppress radiated power outside the bandwidth. In the proposed method, no sudden nonlinear processing such as clipping is used, but the gain calculated by the adaptive algorithm is multiplied by the modulation signal. Hence, reduction of the peak power of the modulation signal and decreased radiation outside the bandwidth can be realized simultaneously. Further, since the proposed method can reduce the peak without dependence on the spectral shape of the modulation signal, the method can be applied to various wireless communications systems that have modulation signals with a large peak power. In order to evaluate the effectiveness of the proposed scheme, numerical simulations are performed with OFDM signals having a large peak power as the modulation signals in order to demonstrate the excellent peak reduction effects. © 2006 Wiley Periodicals, Inc. Electron Comm Jpn Pt 1, 89(10): 44–54, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecja.20244
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b0adfebe5a5440774d2cf4090719b96b https://doi.org/10.1002/ecja.20244 Zobrazit plný text záznamu Plný text ve formátu PDF