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電力増幅器の低歪み・高効率化の手法 Techniques for Low …
modulated signals such as CDMA, OFDM, and introduces distortion compensation techniques (feed-back, feed forward, pre-distortion) and efficiency improvements methods (Doherty amplifier, LINC, EER) for communication systems. Principles and features of theses techniques are summarized. 1. はじめに
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PRINCIPLE OF OFDM - apmc-mwe.org
www.apmc-mwe.orgOFDMの基礎 PRINCIPLE OF OFDM 岡田 実 Minoru Okada 〒630-192 奈良県生駒市高山町8916-5 奈良先端科学技術大学院大学 情報科学研究科
ディジタル変復調 Fundamentals of Modulation and …
www.apmc-mwe.orgTCM (trellis coded modulation)は，拡大した変調信号 空間からセット分割により情報部分空間を作成して いる[4]． 図2. 送信／受信シンボル空間 2.2 波形符号化 符号化の最後に論理信号を物理的な電気信号に変 換する．具体例として，図3 に代表的な伝送路符号
多重化・多重アクセス方式の基礎 - apmc-mwe.org
www.apmc-mwe.organd Multiple Access Technologies Takaya YAMAZATO EcoTopia Science Institue, Nagoya University Furo-cho Chikusa-ku Nagoya, 464-8603 Tel: +81-52-789-2743 Fax:+81-52-789-3173 E-mail: yamazato@nuee.nagoya-u.ac.jp Abstract The paper introduces the fundamentals of multiplexing and multiple access (MA) technologies for mobile communication systems.
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