Sidelobe Suppression for OFDM Signal without Window Function

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560470
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Communication/Network engineering
• Research Institution: Osaka Prefecture University
• Principal Investigator: OHTA Masaya 大阪府立大学, 工学(系)研究科(研究院), 准教授 (70288786)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: マルチキャリア通信 / OFDM / 帯域外漏洩電力 / サイドローブ / N-continuous OFDM / 誤り率

Outline of Final Research Achievements

This research has proposed a novel method to reduce unwanted emissions into adjacent bands in OFDM (Orthogonal Frequency Division Multiplexing) system. This method is derived from a conventional method called as N-continuous OFDM that is a kind of precoding methods and does not use windowing functions.
From the experimental results of the research, the power spectral density and symbol error rate characteristics of the proposed method equal to or greater than those of the conventional method were obtained without using the iterative algorithm. The proposed method was confirmed to be particularly effective on a system with a small number of subcarriers.

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