JP6585307B2 - 受信回路および方法 - Google Patents
受信回路および方法 Download PDFInfo
- Publication number
- JP6585307B2 JP6585307B2 JP2018539966A JP2018539966A JP6585307B2 JP 6585307 B2 JP6585307 B2 JP 6585307B2 JP 2018539966 A JP2018539966 A JP 2018539966A JP 2018539966 A JP2018539966 A JP 2018539966A JP 6585307 B2 JP6585307 B2 JP 6585307B2
- Authority
- JP
- Japan
- Prior art keywords
- sampling
- cyclic prefix
- sequence
- ofdm symbols
- clock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
- H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence
- H03M1/0624—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by synchronisation
-
- 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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
- H03L7/0995—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator comprising a ring oscillator
- H03L7/0996—Selecting a signal among the plurality of phase-shifted signals produced by the ring oscillator
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/124—Sampling or signal conditioning arrangements specially adapted for A/D converters
- H03M1/1245—Details of sampling arrangements or methods
- H03M1/1255—Synchronisation of the sampling frequency or phase to the input frequency or phase
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/34—Analogue value compared with reference values
- H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
- H03M1/46—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- 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
-
- 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
- H04L27/2655—Synchronisation arrangements
- H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
Description
ここに開示されている技術および装置のいくつかの実施形態は、SAR ADCのようなADCをN個の位相のいずれかでクロックするように構成することができるクロック分周回路を使用する。各位相は、サンプル間隔の1/Nずつサンプリングタイミングをオフセットすることに対応する。
上述のように、本開示の技術および装置のいくつかの実施形態は、SAR ADCのようなADCをN個の位相のいずれかを用いてクロックするように構成されうるクロック分周回路を使用する。各位相は、サンプル間隔の1/Nずつサンプルタイミングをオフセットすることに対応する。結果として生じるサンプルクロックは、調整可能な位相を有するが、そのような調整の間に均一なサンプリングレートを有する。
Claims (8)
- 整数Nsym個の直交周波数分割多重(OFDM)シンボルの第2シーケンスの周波数サブバンド内で送信されるNsym個のOFDMシンボルの第1シーケンスを含む信号を処理する、受信回路における方法であって、前記OFDMシンボルの第1シーケンスと前記OFDMシンボルの第2シーケンスとは同じタイミングで送信され、前記OFDMシンボルの第2シーケンスの第1サイクリックプレフィックスは第1持続時間を有し、前記OFDMシンボルの第2シーケンスの第2サイクリックプレフィックスは第2持続時間を有し、前記第1サイクリックプレフィックスおよび前記第2サイクリックプレフィックスの両方を整数個の等距離サンプルでサンプリングするために第1サンプリングレートが必要とされるように、前記第2持続時間は前記第1持続時間よりも短く、前記方法は、
前記第1サンプリングレートよりも低い第2サンプリングレートで前記OFDMシンボルの第1シーケンスを含む前記信号をサンプリングするステップ(1210)と、
サイクリックプレフィックス中のサンプリング位相を調整するステップ(1220)と
を有することを特徴とする方法。 - 前記OFDMシンボルの第1シーケンスおよび前記OFDMシンボルの第2シーケンスのサブキャリア間隔は15kHzであり、前記第1持続時間は160/30.72μsであり、第2持続時間は144/30.72μsであることを特徴とする請求項1に記載の方法。
- 前記第1サンプリングレートは1.92MHzであることを特徴とする請求項1または2に記載の方法。
- 前記OFDMシンボルの第1シーケンスのOFDMシンボルは12個のサブキャリアを有することを特徴とする請求項1乃至3のいずれか1項に記載の方法。
- 前記第1サイクリックプレフィックスは、前記OFDMシンボルの第2シーケンスにおける初期サイクリックプレフィックスであり、前記OFDMシンボルの第2シーケンスにおける後続の全てのサイクリックプレフィックスは、前記第2持続時間を有することを特徴とする請求項1乃至4のいずれか1項に記載の方法。
- 前記OFDMシンボルの第2シーケンスは、第3世代パートナーシッププログラム(3GPP)ロングタームエボリューション(LTE)システムで送信され、スロットに対応することを特徴とする請求項5に記載の方法。
- 前記第2サンプリングレートは240kHzであることを特徴とする請求項1乃至6のいずれか1項に記載の方法。
- 前記サンプリング位相を調整するステップ(1220)は、OFDMシンボル中の最初のサンプリング時点を、前のOFDMシンボルの最後のサンプリング時点の後に前記第2サンプリングレートで非整数倍の周期を生じるように設定することを含むことを特徴とする請求項1乃至7のいずれか1項に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201662295327P | 2016-02-15 | 2016-02-15 | |
US62/295,327 | 2016-02-15 | ||
PCT/EP2017/053234 WO2017140651A1 (en) | 2016-02-15 | 2017-02-14 | Receiver circuit and methods |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019505130A JP2019505130A (ja) | 2019-02-21 |
JP6585307B2 true JP6585307B2 (ja) | 2019-10-02 |
Family
ID=58044069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018539966A Active JP6585307B2 (ja) | 2016-02-15 | 2017-02-14 | 受信回路および方法 |
Country Status (7)
Country | Link |
---|---|
US (2) | US10797835B2 (ja) |
EP (1) | EP3417546B1 (ja) |
JP (1) | JP6585307B2 (ja) |
BR (1) | BR112018016564B1 (ja) |
DK (1) | DK3417546T3 (ja) |
PH (1) | PH12018501698A1 (ja) |
WO (1) | WO2017140651A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR112018016564B1 (pt) * | 2016-02-15 | 2024-03-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Método em um circuito receptor de processamento de um sinal |
ES2806848T3 (es) | 2016-02-15 | 2021-02-18 | Ericsson Telefon Ab L M | Método y aparato para generar señales OFDM NB-IoT con una tasa menor de muestreo |
Family Cites Families (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5671253A (en) | 1995-07-12 | 1997-09-23 | Thomson Consumer Electronics, Inc. | Apparatus for demodulating and decoding video signals encoded in different formats |
TWI252656B (en) | 2003-03-21 | 2006-04-01 | Realtek Semiconductor Corp | Sampling clock compensation device of multi-carrier system and method thereof |
US7251283B2 (en) | 2003-10-20 | 2007-07-31 | Mediatek, Inc. | Timing offset compensation in orthogonal frequency division multiplexing systems |
US8588203B2 (en) | 2004-06-04 | 2013-11-19 | Qualcomm Incorporated | Wireless communication system with improved broadcast coverage |
JP4304210B2 (ja) | 2004-09-09 | 2009-07-29 | パナソニック株式会社 | 位相誤差補正回路 |
US7573944B2 (en) | 2004-10-21 | 2009-08-11 | Samsung Electronics Co., Ltd | Apparatus and method for canceling inter-symbol interference in a broadband wireless communication system |
US7555661B2 (en) | 2005-05-03 | 2009-06-30 | Sirf Technology, Inc. | Power management in digital receivers that adjusts at least one a of clock rate and a bit width based on received signal |
CN101199148B (zh) | 2005-06-15 | 2012-04-04 | 华为技术有限公司 | 一种产生二维导频图案的方法 |
CN101039292A (zh) | 2006-03-16 | 2007-09-19 | 中国科学院上海微系统与信息技术研究所 | 在正交频分复用系统中纠正采样频率偏差的方法及装置 |
CN101277285A (zh) | 2007-03-29 | 2008-10-01 | 深圳赛意法微电子有限公司 | Drm接收机和解调方法 |
US8089856B2 (en) | 2009-04-08 | 2012-01-03 | Mitsubishi Electric Research Laboratories, Inc. | Zero correlation zone based preamble for oversampled OFDM networks in URWIN |
US8487795B1 (en) | 2012-04-18 | 2013-07-16 | Lsi Corporation | Time-interleaved track-and-hold circuit using distributed global sine-wave clock |
US8964881B2 (en) | 2012-08-16 | 2015-02-24 | Massachusetts Institute Of Technology | Method and apparatus for high efficiency, high dynamic range digital RF power amplification |
CN103095638B (zh) | 2012-12-19 | 2016-06-08 | 西安电子科技大学 | 一种多径衰落信道下ofdm系统的采样频率偏移盲估算方法 |
KR20140111496A (ko) | 2013-03-11 | 2014-09-19 | 삼성전자주식회사 | 이동 통신 시스템에서 등화기 수신기 및 그 방법 |
US20150181575A1 (en) | 2013-11-01 | 2015-06-25 | Samsung Electronics Co., Ltd. | Methods and apparatus for enhanced coverage transmission for lte advanced |
US9929891B2 (en) * | 2013-11-05 | 2018-03-27 | Eutelsat S A | Radio communications system and method with increased transmission capacity |
US9526050B2 (en) | 2013-11-18 | 2016-12-20 | Mbit Wireless, Inc. | Method and apparatus for neighbor cell tracking |
CN103986686A (zh) | 2014-06-05 | 2014-08-13 | 北京科技大学 | 一种载波频率偏移、直流偏移以及i/q不平衡的盲估计方法 |
KR102039652B1 (ko) * | 2014-08-18 | 2019-11-26 | 텔레호낙티에볼라게트 엘엠 에릭슨(피유비엘) | 단순 rach(srach) |
US10749724B2 (en) | 2014-11-20 | 2020-08-18 | Futurewei Technologies, Inc. | System and method for setting cyclic prefix length |
EP3326342B1 (en) | 2015-07-20 | 2019-09-25 | Telefonaktiebolaget LM Ericsson (publ) | Transceiver architecture that maintains legacy timing by inserting and removing cyclic prefix at legacy sampling rate |
US10863459B2 (en) | 2015-07-24 | 2020-12-08 | Apple Inc. | Synchronization signals and channel structure for narrowband LTE deployments |
US10341042B2 (en) | 2015-07-27 | 2019-07-02 | Qualcomm Incorporated | Narrowband operation with reduced sampling rate |
JP6738424B2 (ja) | 2015-12-22 | 2020-08-12 | ソニーモバイルコミュニケーションズ株式会社 | 狭帯域キャリア及び広帯域キャリアの同時配備 |
JP2019041135A (ja) | 2016-01-07 | 2019-03-14 | シャープ株式会社 | 端末装置、通信方法、および、集積回路 |
ES2806848T3 (es) * | 2016-02-15 | 2021-02-18 | Ericsson Telefon Ab L M | Método y aparato para generar señales OFDM NB-IoT con una tasa menor de muestreo |
BR112018016564B1 (pt) * | 2016-02-15 | 2024-03-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Método em um circuito receptor de processamento de um sinal |
EP3417587A1 (en) | 2016-02-15 | 2018-12-26 | Telefonaktiebolaget LM Ericsson (PUBL) | Nb-iot receiver operating at minimum sampling rate |
US10313922B2 (en) * | 2016-04-15 | 2019-06-04 | Parallel Wireless, Inc. | Mitigation of negative delay via half CP shift |
-
2017
- 2017-02-14 BR BR112018016564-6A patent/BR112018016564B1/pt active IP Right Grant
- 2017-02-14 US US16/077,960 patent/US10797835B2/en active Active
- 2017-02-14 JP JP2018539966A patent/JP6585307B2/ja active Active
- 2017-02-14 DK DK17705109.1T patent/DK3417546T3/da active
- 2017-02-14 WO PCT/EP2017/053234 patent/WO2017140651A1/en active Application Filing
- 2017-02-14 EP EP17705109.1A patent/EP3417546B1/en active Active
-
2018
- 2018-08-09 PH PH12018501698A patent/PH12018501698A1/en unknown
-
2020
- 2020-09-08 US US17/014,214 patent/US11239961B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
DK3417546T3 (da) | 2021-05-31 |
WO2017140651A1 (en) | 2017-08-24 |
BR112018016564B1 (pt) | 2024-03-12 |
US10797835B2 (en) | 2020-10-06 |
US11239961B2 (en) | 2022-02-01 |
JP2019505130A (ja) | 2019-02-21 |
EP3417546B1 (en) | 2021-04-07 |
EP3417546A1 (en) | 2018-12-26 |
BR112018016564A2 (pt) | 2019-01-02 |
US20200112404A1 (en) | 2020-04-09 |
PH12018501698A1 (en) | 2019-06-10 |
US20200403742A1 (en) | 2020-12-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106972915B (zh) | 一种信号传输方法和窄带无线终端 | |
JP5393775B2 (ja) | マルチキャリア無線通信システムにおける時間エラーおよび周波数エラーの補正 | |
EP2248285B1 (en) | Detection of time division duplex downlink / uplink configuration | |
EP2567522B1 (en) | Inter-carrier bandwidth control for mitigating IQ imbalance | |
KR100913709B1 (ko) | Ofdm 시스템에서 채널 추정을 위한 적응형 시간-필터링 | |
US9479218B2 (en) | Methods for LTE cell search with large frequency offset | |
US8744013B2 (en) | Channel estimation for OFDM systems | |
JP5865393B2 (ja) | 同相及び直交(iq)インバランス推定についての制御可能な周波数オフセット | |
US8416868B2 (en) | Method and system for diversity and mask matching in channel estimation in OFDM communication networks using circular convolution | |
CN108605304B (zh) | 采用降低的采样率的NB-IoT装置中的下行链路时间跟踪 | |
RU2692481C1 (ru) | Nb-iot приемник, работающий на минимальной частоте дискретизации | |
KR20120072262A (ko) | 이동통신을 위한 디지털 수신기 및 그 동작 방법 | |
US20090052582A1 (en) | Method for improving the performance of ofdm receiver and a receiver using the method | |
US11239961B2 (en) | Receiver circuit and methods | |
US20130208776A1 (en) | Test Signal in Receiver | |
US9735997B2 (en) | Method, device and computer program for correcting a frequency shift on symbols received by a receiver | |
TWI575890B (zh) | 通訊接收端及其自動增益控制方法 | |
US11356876B2 (en) | Method and device for gain adjustment in mobility measurements | |
JP2000299676A (ja) | 受信装置 | |
WO2019197422A1 (en) | Pbch detection using hypothesis testing of offset from raster frequency |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180911 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20180911 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20190729 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20190809 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20190904 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6585307 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |