JP2011049937A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2011049937A5 JP2011049937A5 JP2009197865A JP2009197865A JP2011049937A5 JP 2011049937 A5 JP2011049937 A5 JP 2011049937A5 JP 2009197865 A JP2009197865 A JP 2009197865A JP 2009197865 A JP2009197865 A JP 2009197865A JP 2011049937 A5 JP2011049937 A5 JP 2011049937A5
- Authority
- JP
- Japan
- Prior art keywords
- delay profile
- arrival wave
- selection delay
- selection
- profile
- 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.)
- Granted
Links
Images
Description
図１に戻って、遅延部２は、遅延プロファイルＤＰ１を予め決められた時間Δだけ遅延して遅延信号ΔＤＰ１を出力する。本実施の形態では、１伝送シンボル長（＝Δ）だけ遅延させるものとするが、受信する信号構成に応じて異なる遅延時間を設定してもよい。 Returning to FIG. 1, the delay unit 2 delays the delay profile DP1 by a predetermined time Δ and outputs a delay signal ΔDP1. In this embodiment, delay is performed by one transmission symbol length (= Δ), but different delay times may be set according to the received signal configuration.
この周波数選択性フェージングが各サブキャリアに及ぼす影響を調べるために、第２のFFT演算部７は、遅延プロファイルＤＰ１を周波数領域に変換して周波数領域遅延プロファイルを得る。ここで得られる周波数領域遅延プロファイルは、各サブキャリアに作用する周波数選択性フェージングの影響、つまり、振幅の減衰量と位相の回転量を示す値である。 In order to examine the influence of this frequency selective fading on each subcarrier, the second FFT calculator 7 converts the delay profile DP1 into the frequency domain to obtain a frequency domain delay profile. The frequency domain delay profile obtained here is a value indicating the influence of frequency selective fading acting on each subcarrier, that is, the amount of amplitude attenuation and the amount of phase rotation.
Claims (1)
前記ステップ(b) は、
(b-1) 前記遅延プロファイルにおける前記少なくとも一つの到来波のうち、受信レベルが所定の条件を満足する到来波を前記計算対象となる到来波として有する選択遅延プロファイルを選択するステップと、
(b-2) 前記選択遅延プロファイルを所定時間遅延させて選択遅延信号を得るステップと、
(b-3) 前記選択遅延プロファイル及び前記選択遅延信号に基づき、前記計算対象となる到来波についての振幅及び位相の時間変動量を計算するステップとを含む、
キャリア間干渉除去方法。
A method for canceling interference between carriers according to claim 6 or 7,
Step (b)
(b-1) selecting a selected delay profile having an arrival wave whose reception level satisfies a predetermined condition as the arrival wave to be calculated among the at least one arrival wave in the delay profile;
(b-2) delaying the selection delay profile for a predetermined time to obtain a selection delay signal;
(b-3) calculating a time variation amount of an amplitude and a phase of the arrival wave to be calculated based on the selection delay profile and the selection delay signal,
Inter-carrier interference cancellation method.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009197865A JP5349206B2 (en) | 2009-08-28 | 2009-08-28 | Intercarrier interference canceling apparatus and intercarrier interference canceling method |
| DE102010026442.3A DE102010026442B4 (en) | 2009-08-28 | 2010-07-08 | Intercarrier interference removal device and intercarrier interference removal method |
| CN2010102665641A CN102006260B (en) | 2009-08-28 | 2010-08-27 | Inner-carrier interference removing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009197865A JP5349206B2 (en) | 2009-08-28 | 2009-08-28 | Intercarrier interference canceling apparatus and intercarrier interference canceling method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2011049937A JP2011049937A (en) | 2011-03-10 |
| JP2011049937A5 true JP2011049937A5 (en) | 2013-05-16 |
| JP5349206B2 JP5349206B2 (en) | 2013-11-20 |
Family
ID=43536292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009197865A Active JP5349206B2 (en) | 2009-08-28 | 2009-08-28 | Intercarrier interference canceling apparatus and intercarrier interference canceling method |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5349206B2 (en) |
| CN (1) | CN102006260B (en) |
| DE (1) | DE102010026442B4 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012204941A (en) * | 2011-03-24 | 2012-10-22 | Toshiba Corp | Receiving device and receiving method |
| JP6192879B1 (en) * | 2016-12-09 | 2017-09-06 | 三菱電機株式会社 | Maximum likelihood sequence estimation circuit, receiver, and maximum likelihood sequence estimation method |
| WO2020050004A1 (en) | 2018-09-03 | 2020-03-12 | 日本電気株式会社 | Transmission device, transmission time variation compensation method, and non-transitory computer-readable medium having transmission time variation compensation program stored thereon |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2671923B1 (en) * | 1991-01-17 | 1993-04-16 | France Etat | DEVICE FOR CONSISTENT DEMODULATION OF DIGITAL DATA INTERLACED IN TIME AND IN FREQUENCY, WITH ESTIMATION OF THE FREQUENTIAL RESPONSE OF THE TRANSMISSION AND THRESHOLD CHANNEL, AND CORRESPONDING TRANSMITTER. |
| JP4298320B2 (en) * | 2002-11-08 | 2009-07-15 | 富士通株式会社 | Receiver for OFDM transmission system |
| US7706428B2 (en) | 2005-04-21 | 2010-04-27 | Telefonaktiebolaget L M Ericsson (Publ) | Low complexity inter-carrier interference cancellation |
| US7907673B2 (en) * | 2006-10-26 | 2011-03-15 | Telefonaktiebolaget L M Ericsson (Publ) | Robust and low-complexity combined signal power estimation |
| US20080144749A1 (en) * | 2006-12-19 | 2008-06-19 | Leif Wilhelmsson | Inter-Carrier Interference Cancellation for OFDMA Systems |
| JP4868525B2 (en) * | 2007-04-23 | 2012-02-01 | 学校法人 名城大学 | DEMODULATION DEVICE, RECEPTION DEVICE, DEMODULATION METHOD, AND DEMODULATION PROGRAM |
| US7773683B2 (en) | 2007-08-31 | 2010-08-10 | Industrial Technology Research Institute | Method and apparatus for ICI cancellation in communication systems |
| JP4780161B2 (en) * | 2007-11-28 | 2011-09-28 | ソニー株式会社 | Receiving device, receiving method, and program |
-
2009
- 2009-08-28 JP JP2009197865A patent/JP5349206B2/en active Active
-
2010
- 2010-07-08 DE DE102010026442.3A patent/DE102010026442B4/en active Active
- 2010-08-27 CN CN2010102665641A patent/CN102006260B/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4263119B2 (en) | Method and apparatus for initial frequency synchronization in OFDM system | |
| JP2008048093A5 (en) | ||
| JP5222843B2 (en) | OFDM receiving apparatus, OFDM receiving method, OFDM receiving circuit, integrated circuit, and program | |
| TW200731721A (en) | Method and apparatus for channel state information generation in a DVB-T receiver | |
| RU2010122046A (en) | INTERPOLATION METHOD AND DEVICE FOR INCREASING THE EFFECTIVENESS OF CROSS INTERFERENCE EVALUATION | |
| JP2016500966A5 (en) | ||
| JP2005204301A (en) | Method and apparatus for coarse frequency synchronization in ofdm system | |
| CN103312643B (en) | Balancer, receiving system and equalization methods | |
| JP2011049937A5 (en) | ||
| JP2006020190A (en) | Interfering signal detector | |
| JP2010541362A5 (en) | ||
| CN113225274A (en) | Multi-path channel model measuring method for fast moving | |
| JP2009188603A (en) | Ofdm receiver | |
| JP5109878B2 (en) | Demodulator | |
| CN101692666A (en) | Method for filtering time domain channel response noises | |
| Qiao et al. | Shallow water acoustic channel modeling and MIMO-OFDM simulations | |
| US8964916B2 (en) | Signal-to-noise ratio (SNR) dependent channel tracking for smart utility networks (SUN) orthogonal frequency division multiplexing (OFDM) | |
| JP2010034934A (en) | Transmission channel estimation method and transmission channel estimator | |
| JP4115466B2 (en) | OFDM receiver | |
| JP5349206B2 (en) | Intercarrier interference canceling apparatus and intercarrier interference canceling method | |
| JP5411659B2 (en) | Multipath distortion equalization apparatus and reception apparatus in OFDM signal reception | |
| WO2009082849A1 (en) | Method and apparatus for channel estimation | |
| JP4093246B2 (en) | Orthogonal frequency division multiplexing transmission apparatus and method | |
| JP2009164746A (en) | Receiver, receiving method, and program | |
| JP2008141279A5 (en) |