JP7761132B2 - 無線通信方法、送信装置、受信装置、及び無線通信システム - Google Patents
無線通信方法、送信装置、受信装置、及び無線通信システムInfo
- Publication number
- JP7761132B2 JP7761132B2 JP2024510829A JP2024510829A JP7761132B2 JP 7761132 B2 JP7761132 B2 JP 7761132B2 JP 2024510829 A JP2024510829 A JP 2024510829A JP 2024510829 A JP2024510829 A JP 2024510829A JP 7761132 B2 JP7761132 B2 JP 7761132B2
- Authority
- JP
- Japan
- Prior art keywords
- unit
- training
- signal
- imbalance
- spectrum
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/38—Demodulator circuits; Receiver circuits
- H04L27/3845—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier
- H04L27/3854—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier using a non - coherent carrier, including systems with baseband correction for phase or frequency offset
- H04L27/3863—Compensation for quadrature error in the received signal
-
- 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
-
- 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
- H04B1/02—Transmitters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
- H04L25/03834—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using pulse shaping
-
- 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
-
- 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
- H04L27/264—Pulse-shaped multi-carrier, i.e. not using rectangular window
- H04L27/26412—Filtering over the entire frequency band, e.g. filtered orthogonal frequency-division multiplexing [OFDM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
- H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Power Engineering (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Mobile Radio Communication Systems (AREA)
- Transmitters (AREA)
Description
Claims (4)
- シングルキャリアを用いて送信装置から受信装置へ信号を伝送する無線通信方法において、
前記送信装置は、
トレーニング時に対称サブキャリアを用いた2つ以上のトレーニング信号を生成してOFDM変調し、
OFDM変調したトレーニング信号それぞれのスペクトラムをシングルキャリアスペクトラムに近づけるようにシェーピングし、
前記受信装置は、
トレーニング時にシングルキャリア時間領域相関系列を用いて2つ以上のトレーニング信号のタイミングを調整し、
タイミングを調整した2つ以上のトレーニング信号からチャネル応答とIQインバランスを推定し、
推定したIQインバランスを補償し、
補償した信号を復調する
ことを特徴とする無線通信方法。 - シングルキャリアを用いて受信装置へ信号を伝送する送信装置において、
トレーニング時に対称サブキャリアを用いた2つ以上のトレーニング信号を生成してOFDM変調するOFDM変調部と、
前記OFDM変調部がOFDM変調したトレーニング信号それぞれのスペクトラムをシングルキャリアスペクトラムに近づけるようにシェーピングするシェーピング部と
を有することを特徴とする送信装置。 - 請求項2に記載の送信装置から信号を受信する受信装置において、
トレーニング時にシングルキャリア時間領域相関系列を用いて2つ以上のトレーニング信号のタイミングを調整するタイミング調整部と、
前記タイミング調整部がタイミングを調整した2つ以上のトレーニング信号からチャネル応答とIQインバランスを推定する推定部と、
前記推定部が推定したIQインバランスを補償する補償部と、
前記補償部が補償した信号を復調する復調部と
を有することを特徴とする受信装置。 - シングルキャリアを用いて送信装置から受信装置へ信号を伝送する無線通信システムにおいて、
前記送信装置は、
トレーニング時に対称サブキャリアを用いた2つ以上のトレーニング信号を生成してOFDM変調するOFDM変調部と、
前記OFDM変調部がOFDM変調したトレーニング信号それぞれのスペクトラムをシングルキャリアスペクトラムに近づけるようにシェーピングするシェーピング部と
を有し、
前記受信装置は、
トレーニング時にシングルキャリア時間領域相関系列を用いて2つ以上のトレーニング信号のタイミングを調整するタイミング調整部と、
前記タイミング調整部がタイミングを調整した2つ以上のトレーニング信号からチャネル応答とIQインバランスを推定する推定部と、
前記推定部が推定したIQインバランスを補償する補償部と、
前記補償部が補償した信号を復調する復調部と
を有することを特徴とする無線通信システム。
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2022/015688 WO2023188037A1 (ja) | 2022-03-29 | 2022-03-29 | 無線通信方法、送信装置、受信装置、及び無線通信システム |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPWO2023188037A1 JPWO2023188037A1 (ja) | 2023-10-05 |
| JP7761132B2 true JP7761132B2 (ja) | 2025-10-28 |
Family
ID=88200191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2024510829A Active JP7761132B2 (ja) | 2022-03-29 | 2022-03-29 | 無線通信方法、送信装置、受信装置、及び無線通信システム |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250211471A1 (ja) |
| EP (1) | EP4503527A4 (ja) |
| JP (1) | JP7761132B2 (ja) |
| WO (1) | WO2023188037A1 (ja) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008236704A (ja) | 2006-05-16 | 2008-10-02 | Sony Corp | 無線通信装置 |
| JP2008312149A (ja) | 2007-06-18 | 2008-12-25 | Toshiba Corp | 無線通信方法及び無線通信装置 |
| US20130259153A1 (en) | 2012-03-30 | 2013-10-03 | Qualcomm Incorporated | Paired ofdm pilot symbols |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5361827B2 (ja) * | 2010-08-12 | 2013-12-04 | 日本電信電話株式会社 | 送信機および送信方法 |
| US9130626B2 (en) * | 2013-04-10 | 2015-09-08 | Qualcomm Incorporated | Frequency dependent I/Q impairment compensation |
| CN104202288B (zh) * | 2014-08-27 | 2015-06-03 | 江苏中兴微通信息科技有限公司 | 一种混合载波调制mimo系统的数据收发方法与装置 |
| US10389561B2 (en) * | 2017-07-28 | 2019-08-20 | Texas Instruments Incorporated | Transmitter time-domain estimation and compensation of IQ imbalance |
-
2022
- 2022-03-29 JP JP2024510829A patent/JP7761132B2/ja active Active
- 2022-03-29 US US18/848,578 patent/US20250211471A1/en active Pending
- 2022-03-29 WO PCT/JP2022/015688 patent/WO2023188037A1/ja not_active Ceased
- 2022-03-29 EP EP22935185.3A patent/EP4503527A4/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008236704A (ja) | 2006-05-16 | 2008-10-02 | Sony Corp | 無線通信装置 |
| JP2008312149A (ja) | 2007-06-18 | 2008-12-25 | Toshiba Corp | 無線通信方法及び無線通信装置 |
| US20130259153A1 (en) | 2012-03-30 | 2013-10-03 | Qualcomm Incorporated | Paired ofdm pilot symbols |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2023188037A1 (ja) | 2023-10-05 |
| WO2023188037A1 (ja) | 2023-10-05 |
| EP4503527A4 (en) | 2026-02-25 |
| US20250211471A1 (en) | 2025-06-26 |
| EP4503527A1 (en) | 2025-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5297502B2 (ja) | 無線通信システムにおける搬送波周波数オフセットの推定 | |
| EP2232741B1 (en) | Channel estimation method and system for inter-carrier interference-limited wireless communication network | |
| US7308034B2 (en) | Method and device for tracking carrier frequency offset and sampling frequency offset in orthogonal frequency division multiplexing wireless communication system | |
| JP5497800B2 (ja) | 直交周波数分割多重無線通信システムにおけるキャリア周波数オフセットを補償するための方法及び装置 | |
| US7539125B2 (en) | Method and circuit for frequency offset estimation in frequency domain in the orthogonal frequency division multiplexing baseband receiver for IEEE 802.11A/G wireless LAN standard | |
| US6584164B1 (en) | Method for forming a training sequence | |
| JP2002101069A (ja) | 直交周波数分割多重信号を処理するための方法およびシステム | |
| KR20050011258A (ko) | 직교 주파수 분할 다중 수신 시스템에서의 임펄스 잡음억제 회로 및 방법 | |
| US20170126348A1 (en) | Apparatus and method for generating and using a pilot signal | |
| US7526020B2 (en) | Circuit for improving channel impulse response estimation and compensating for remnant frequency offset in the orthogonal frequency division multiplexing (OFDM) baseband receiver for IEEE 802.11a/g wireless LAN standard | |
| US20080008082A1 (en) | Method and Apparatus for Estimating Timing Error and Frequency Offset of Hpi System | |
| EP2704387B1 (en) | SFO estimation technique for MIMO-OFDM frequency synchronization | |
| EP2770686A1 (en) | Estimation of the cfo by transmission of a single-subcarrier signal in ofdm system | |
| Dai | Carrier frequency offset estimation and correction for OFDMA uplink | |
| JP7761132B2 (ja) | 無線通信方法、送信装置、受信装置、及び無線通信システム | |
| JP3558879B2 (ja) | ディジタル通信装置 | |
| KR101128143B1 (ko) | 채널 추정에 사용되는 데이터의 오버헤드를 줄이기 위한 통신 시스템 및 방법 | |
| Arslan | Channel frequency response estimation under the effect of RF impairements in OFDM based wireless systems | |
| Prasetyo et al. | On the guard band-based coarse frequency offset estimation technique for burst OFDM systems | |
| KR100608916B1 (ko) | 직교주파수분할다중방식 무선랜에서 무선 채널 보상 방법및 장치 | |
| JP4638089B2 (ja) | 受信データ復調方法、およびこれを使用する受信装置、および送受信装置 | |
| Saw et al. | Comparison of Three Different Cancellation Schemes for Orthogonal Frequency Division Multiplexing (OFDM) System | |
| Wu et al. | Semi-blind channel estimation for the uplink of multi-carrier code-division multiple access systems with timing offset | |
| Gürsan | Frame Synchronization in OFDM Systems | |
| Pnevmatikakis et al. | Physical layer of a base-band OFDM modem: Algorithms and performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20240920 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20250603 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20250731 |
|
| 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: 20250916 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20250929 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 7761132 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |