JP5704709B2 - 長時間遅延拡散環境のためのofdmaシステム - Google Patents
長時間遅延拡散環境のためのofdmaシステム Download PDFInfo
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- JP5704709B2 JP5704709B2 JP2011092457A JP2011092457A JP5704709B2 JP 5704709 B2 JP5704709 B2 JP 5704709B2 JP 2011092457 A JP2011092457 A JP 2011092457A JP 2011092457 A JP2011092457 A JP 2011092457A JP 5704709 B2 JP5704709 B2 JP 5704709B2
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- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000005562 fading Methods 0.000 description 2
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Description
記号7個)により形成される。データとパイロット副搬送波の比率はアップリンクで6:1であり、大きく改善され、提案される記号構造を使用することによりデータ速度を上げることができる。
Claims (1)
- 直交周波数分割多元接続システムで実施する方法において、
(a)チャンネル帯域幅を5MHz、副搬送波間隔を5.47kHz、FFTサイズを1024、データ副搬送波数を720、パイロット副搬送波数を120、保護副搬送波数を184、サイクリックプレフィックス長さを22.8マイクロ秒に決定することと;
(b)ダウンリンク伝送においては、第1のタイル構造を(副搬送波4個)×(OFDM記号4個)と定義し、アップリンク伝送においては、第2のタイル構造を(副搬送波4個)×(OFDM記号7個)と定義することと;
(c)ダウンリンク伝送においては、パイロットシンボルを前記第1のタイル構造の四隅に配置することで、データ副搬送波とパイロット副搬送波の比率を3:1とすることと;
(d)アップリング伝送においては、パイロットシンボルを前記第2のタイル構造の四隅に配置することで、データ副搬送波とパイロット副搬送波の比率を6:1とすることとから成ることを特徴とする方法。
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JP2011092457A JP5704709B2 (ja) | 2011-03-31 | 2011-03-31 | 長時間遅延拡散環境のためのofdmaシステム |
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JP2011092457A JP5704709B2 (ja) | 2011-03-31 | 2011-03-31 | 長時間遅延拡散環境のためのofdmaシステム |
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JP2012217114A JP2012217114A (ja) | 2012-11-08 |
JP5704709B2 true JP5704709B2 (ja) | 2015-04-22 |
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Families Citing this family (3)
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US9525522B2 (en) * | 2014-02-05 | 2016-12-20 | Qualcomm Incorporated | Systems and methods for improved communication efficiency in high efficiency wireless networks |
WO2015137712A1 (en) | 2014-03-14 | 2015-09-17 | Samsung Electronics Co., Ltd. | Method and apparatus for controlling interleaving depth |
ES2951495T3 (es) | 2014-06-12 | 2023-10-23 | Huawei Tech Co Ltd | Sistema y método para la asignación de tonos OFDMA en Redes Wi-Fi de próxima generación |
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AU2008312350B2 (en) * | 2007-10-17 | 2013-09-19 | Zte (Usa) Inc. | OFDM/OFDMA frame structure for communication systems |
KR101720475B1 (ko) * | 2007-11-09 | 2017-03-27 | 지티이 (유에스에이) 인크. | 통신 시스템용의 유연한 ofdm/ofdma 프레임 구조 |
US20090257342A1 (en) * | 2008-04-10 | 2009-10-15 | Media Tek Inc. | Resource block based pilot pattern design for 1/2 - stream mimo ofdma systems |
EP2415225B1 (fr) * | 2009-03-31 | 2013-12-18 | Orange | Procede et dispositif d'emission avec mappage temps-frequence des symboles dans des sous-canaux |
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