JP2013541898A - 基準信号生成装置及びこれを用いたプリアンブルシーケンス検出装置 - Google Patents
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- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 title claims abstract description 13
- 238000013507 mapping Methods 0.000 claims abstract description 22
- 230000001934 delay Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000001131 transforming effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 23
- 238000010586 diagram Methods 0.000 description 9
- 239000013256 coordination polymer Substances 0.000 description 8
- 125000004122 cyclic group Chemical group 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005562 fading Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 description 2
- 102100038659 Inactive tyrosine-protein kinase PRAG1 Human genes 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
- H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
- H04L27/2636—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0005—Synchronisation arrangements synchronizing of arrival of multiple uplinks
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- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
- H04W56/0065—Synchronisation arrangements determining timing error of reception due to propagation delay using measurement of signal travel time
- H04W56/007—Open loop measurement
- H04W56/0075—Open loop measurement based on arrival time vs. expected arrival time
- H04W56/0085—Open loop measurement based on arrival time vs. expected arrival time detecting a given structure in the signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2649—Demodulators
- H04L27/26524—Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation
- H04L27/26526—Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation with inverse FFT [IFFT] or inverse DFT [IDFT] demodulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] receiver or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- Signal Processing (AREA)
- Physics & Mathematics (AREA)
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Abstract
【選択図】図4
Description
302:839−DFT部
304:副搬送波マッピング部
306:2048−IDFT部
Claims (11)
- 所定値を有する第1信号が入力されて839の長さを有する複数個の第2信号を出力するプリアンブルシーケンス生成部と、
前記プリアンブルシーケンス生成部から送られた第2信号を離散フーリエ変換して周波数領域信号に変換する離散フーリエ変換部と、
前記離散フーリエ変換部で出力された周波数領域信号を副搬送波マッピングする副搬送波マッピング部と、
前記副搬送波マッピング部から2n(n:自然数)の長さを有する信号が入力されて逆離散フーリエ変換して2n(n:自然数)の長さを有する時間領域信号に変換する逆離散フーリエ変換部とを含む基準信号生成装置。 - 前記nは11であることを特徴とする請求項1に記載の基準信号生成装置。
- 前記プリアンブルシーケンス生成部は、前記839の長さを有する64個のプリアンブルシーケンス信号を生成することを特徴とする請求項1に記載の基準信号生成装置。
- 前記プリアンブルシーケンス生成部は、自己相関または相互相関特性に優れたCAZACコードを用いることを特徴とする請求項3に記載の基準信号生成装置。
- 所定値を有する第1信号が入力されて839の長さを有する複数個の第2信号を出力するプリアンブルシーケンス生成部と、前記プリアンブルシーケンス生成部から送られた第2信号を離散フーリエ変換して周波数領域信号に変換する離散フーリエ変換部と、前記離散フーリエ変換部で出力された周波数領域信号を副搬送波マッピングする副搬送波マッピング部と、前記副搬送波マッピング部から2n(n:自然数)の長さを有する信号が入力されて逆離散フーリエ変換して2n(n:自然数)の長さを有する時間領域信号に変換する逆離散フーリエ変換部とを含む基準信号生成部と、
端末から送られた物理ランダムアクセスチャンネル(PRACH)信号を受信するPRACH受信部と、
前記基準信号生成部から受信した基準信号と前記PRACH受信部から受信した信号の相関度を検出する第2相関部とを含むことを特徴とするプリアンブルシーケンス検出装置。 - 前記第2相関部から送られた相関度のうち最大値を有する相関度を決定する第2決定部を含むことを特徴とする請求項5に記載のプリアンブルシーケンス検出装置。
- 前記決定部から送られた相関度を用いて前記PRACH受信部から受信した信号に含まれたプリアンブルシーケンスを検出するプリアンブルシーケンス及びタイムオフセット検出部を含むことを特徴とする請求項6に記載のプリアンブルシーケンス検出装置。
- 前記PRACH受信部から受信した信号を単位長さの定数倍を有する複数個の信号を生成するために、一定長さの時間単位で受信した前記信号を遅延させる遅延調節部と、
前記遅延調節部から送られた二つの信号の相関度を測定する第1相関部と、
前記第1相関部から送られた相関度のうち最大値を有する相関度を決定する第1決定部と、
前記PRACH受信部から受信した24576の長さを有する信号を2n(n:自然数)の長さを有するようにダウンサンプリングを行った後、第2相関部に送るダウンサンプリング部とを含むことを特徴とする請求項5に記載のプリアンブルシーケンス検出装置。 - 前記基準信号生成部から入力された少なくとも二つの基準信号を組み合わせて一つの生成基準信号を生成する分割部を含むことを特徴とする請求項5に記載のプリアンブルシーケンス検出装置。
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KR10-2010-0092336 | 2010-09-20 | ||
KR1020100092336A KR101080906B1 (ko) | 2010-09-20 | 2010-09-20 | 기준 신호 생성 장치 및 이를 이용한 프리앰블 시퀀스 검출 장치 |
PCT/KR2011/001136 WO2012039531A1 (ko) | 2010-09-20 | 2011-02-22 | 기준 신호 생성 장치 및 이를 이용한 프리앰블 시퀀스 검출 장치 |
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US (1) | US20130208679A1 (ja) |
EP (1) | EP2621110A4 (ja) |
JP (1) | JP5553255B2 (ja) |
KR (1) | KR101080906B1 (ja) |
WO (1) | WO2012039531A1 (ja) |
Cited By (2)
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JP2017531359A (ja) * | 2014-08-25 | 2017-10-19 | ワン メディア,エルエルシー | フレキシブルな直交周波数分割多重phy伝送データフレームプリアンブルの動的な構成 |
US10079708B2 (en) | 2015-03-09 | 2018-09-18 | ONE Media, LLC | System discovery and signaling |
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KR101283909B1 (ko) | 2011-11-25 | 2013-07-16 | 주식회사 이노와이어리스 | Lte 시스템에서 물리 랜덤 접속 채널 검출 방법 및 장치 |
CN102843328B (zh) * | 2012-08-02 | 2014-11-26 | 北京中科晶上科技有限公司 | Tdd lte系统中的prach序列的检测方法 |
KR101456700B1 (ko) * | 2012-09-10 | 2014-10-31 | 주식회사 케이티 | 상향링크 채널 추정 방법 및 통신 시스템 |
WO2015188861A1 (en) * | 2014-06-11 | 2015-12-17 | Telefonaktiebolaget L M Ericsson (Publ) | Processing of random access preamble sequences |
GB2538316B (en) * | 2015-05-15 | 2021-01-06 | Viavi Solutions Uk Ltd | PRACH signal generation |
ES2773904T3 (es) | 2015-07-15 | 2020-07-15 | Tata Consultancy Services Ltd | Detección de preámbulos de canal físico de acceso aleatorio en un sistema de comunicación de la evolución a largo plazo |
WO2017022961A1 (ko) * | 2015-07-31 | 2017-02-09 | 엘지전자 주식회사 | Fdr 방식을 이용하는 통신 장치가 비선형 자기간섭 신호의 채널 추정을 위한 참조신호를 전송하는 방법 |
US11109330B2 (en) | 2016-11-11 | 2021-08-31 | Samsung Electronics Co., Ltd. | Method for determining correction time in wireless communication system and apparatus therefor |
CN108631903B (zh) * | 2017-03-22 | 2019-09-17 | 电信科学技术研究院 | 一种物理随机接入信道前导码序列确定方法及装置 |
KR102308983B1 (ko) | 2019-08-28 | 2021-10-05 | 중앙대학교 산학협력단 | 진동 펄스 시퀀스 생성, 검출 방법 및 그 장치 |
KR102262474B1 (ko) * | 2019-12-11 | 2021-06-08 | 에티포스 시오 | Lte v2x 통신에 있어서 pscch dmrs 검출 장치 및 그 검출 방법 |
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US20130208679A1 (en) | 2013-08-15 |
WO2012039531A1 (ko) | 2012-03-29 |
EP2621110A1 (en) | 2013-07-31 |
KR101080906B1 (ko) | 2011-11-08 |
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