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ブロードバンドシングルキャリア無線通信における周波数領域信号処理とその応用の研究

频域信号处理及其在宽带单载波无线通信中的应用研究

基本信息

批准号：
12J05089
负责人：
小原辰徳
金额：
$ 0.64万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for JSPS Fellows
财政年份：
2012
资助国家：
日本
起止时间：
2012 至无数据
项目状态：
已结题

项目摘要

毎秒1ギガビットの次世代超高速移動無線通信システム実現のための重要な要素技術である広帯域シングルキャリア(SC)伝送における周波数領域等化(FDE)技術とその応用技術に関する研究を行った.私はこれまで,広帯域SC伝送の伝送特性劣化を引き起こす受信タイミングオフセットの影響を低減するジョイントFDE・スペクトル合成を提案してきた.提案法は,受信タイミングオフセットの影響を低減しつつ,送信フィルタのロールオフファクタの増加に伴い,より大きな周波数ダイバーシチ効果を得ることができ,優れた伝送特性を達成できることを明らかにした.また,従来のFDEに用いられていたサイクリックプレフィックス(CP)挿入の必要のないオーバーラップFDEに関する理論検討を行い,従来FDEに比べ高い伝送効率を達成できること,遅延時間が変動する伝搬環境において従来FDEよりも優れた伝送特性を得られることを示した.また,ジョイントFDE・スペクトル合成におけるチャネル推定の影響について検討を行った.チャネルの伝達関数と受信タイミングオフセットによる位相回転係数の積を新たな等価チャネル伝達関数と見なして推定でき,更に判定帰還を用いる最尤チャネル推定により,パイロット信号のみを用いるときよりも伝送特性を大幅に改善でき,理想チャネル推定時に近い伝送特性を達成できることを示した.また,シングルキャリア周波数分割マルチアクセス(SC-FDMA)へのオーバーラップFDEの応用についての研究も行った.各ユーザのSCスペクトルを離散周波数上に重ならないようにマッピングすることでSC信号の低ピーク電力特性を生かしつつマルチアクセスを可能とするSC-FDMAにCP挿入を必要としないオーバーラップFDEを適用することで,従来法に比べて各ユーザの伝送効率を向上できることを明らかにした.また,スペクトルマッピング法の影響についても検討を行い,分散マッピングを行うことで局所マッピングより高い伝送効率を達成できることを示した.

The next-generation ultra-high-speed mobile wireless communication system will enable you to realize the critical elements of the next-generation ultra-high-speed mobile wireless communication system. The key elements of the technology have been realized in the next generation of ultra-high-speed mobile wireless communications in the next generation of ultra-high-speed mobile wireless communications in the next generation of ultra-high-speed mobile wireless communications in the next generation. The key elements of technology have been realized in the field of communication (SC). Cycle wavenumber domain equalization (FDE), technology, technology. In the case of private information, the domain SC sends information about the deterioration of the characteristics. It starts with the trust, trust, and reliability. The message is low. The FDE. In the proposed method, it is believed that the number of waves per week may be higher than that of the partner, and that the performance of the proposed method will be affected by the number of waves of the week, the number of waves of the week, the number of waves, the number of In recent years, FDE has used the CP to register the necessary information on FDE delivery. In recent years, the FDE has a higher delivery rate than that of the environment, and the performance of the FDE has been shown in this paper. This is due to the fact that there is a presumption that there is a negative effect on the composition of the FDE. The number of people who are trusted to receive more information than the number of people who are trusted to receive information on the number of phase responses, the number of people who have reached the number of parameters such as the number of new ones, the number of people who have reached the number of parameters, the number of people who have reached the number of parameters, the number of people who have reached the number of parameters, the number of people who are trusted to do so, the number of people who have reached the number of parameters, the number of people who have reached the number of reliable data, the number of trusts, the number of people who have reached the number of parameters, the number of people who are trusted to do so, the number of people who have reached the number of parameters, the number of people who have reached the number of parameters, the number of people who have reached the number of parameters, the number of people who have reached the number of parameters, the number of people who have reached the number of parameters, the number of trusted users, the number of people who have reached the number of reliable data, the number of people who have reached the number of parameters, the number of people who have reached the number of The ideal environment is presumed to be a near-term delivery feature that is displayed as a warning message. Wave number division (SC-FDMA), wave number division, wave number division, wave On the number of scattered waves in each SC station, there is a significant increase in the frequency of low-voltage SC signals. In terms of electrical properties, it is possible that SC-FDMA CP can be used as necessary. In this way, the distribution rate of FDE is higher than that of each other, and the delivery rate is higher. Please tell me that the delivery rate is higher than that of the local government.