CN104580049B - A kind of method of uplink frequency offset compensation - Google Patents
A kind of method of uplink frequency offset compensation Download PDFInfo
- Publication number
- CN104580049B CN104580049B CN201310472816.XA CN201310472816A CN104580049B CN 104580049 B CN104580049 B CN 104580049B CN 201310472816 A CN201310472816 A CN 201310472816A CN 104580049 B CN104580049 B CN 104580049B
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- phase difference
- symbol
- prb
- estimation
- phase
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000013256 coordination polymer Substances 0.000 claims abstract description 22
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 238000004321 preservation Methods 0.000 claims abstract description 5
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 4
- 238000000605 extraction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (2)
- A kind of 1. method of uplink frequency offset compensation, it is characterised in that including:A, the data division according to corresponding to the cyclic prefix CP of the sub-frame of uplink of reception and CP carries out phase difference estimation, and preserves The symbol of phase difference estimation;B, phase difference estimation, the phase difference estimated are carried out using the pilot tone in a sub-frame of uplink;If symbol C, using the phase difference of pilot tone estimation is consistent with the symbol of the phase difference estimation of preservation, phase is kept Poor φ values are constant;If the symbol of the phase difference estimation preserved is just, φ values is negative, then φ are added into 2 π as revised frequency deviation Estimate phase difference;If the symbol of the phase difference estimation preserved is negative, φ values are just, then φ values to be subtracted into 2 π as revised Phase difference value;D, phase compensation is carried out to upstream data according to revised phase difference;Wherein, step A includes:One piece of data d1 and OFDM symbol rear portion in the sub-frame of uplink CP that A1, extraction receive correspond to CP data d2;A2, Fast Fourier Transform (FFT) is carried out to d1 and d2, obtain frequency domain data D1 and D2;A3, make related operation, each Physical Resource Block PRB all subcarrier phases to subcarrier corresponding to frequency domain data D1 and D2 The value for closing computing is added to obtain a complex values;A3, each OFDM symbol for sub-frame of uplink perform step A1 to A3 respectively, then by answering corresponding to same PRB Numerical value is added;A5, phase is taken to these complex values, preserve each PRB phase symbol;A6, the PRB positions according to occupied by user, corresponding value of symbol is added, if result is just, is represented positive phase, is Negative indication minus phase.
- 2. according to the method for claim 1, it is characterised in that A6 further comprises:If the PRB positional numbers occupied by user For L, if L>2, then the symbol remaining PRB pair answered to the PRB occupied by user again after 1 PRB is removed end to end respectively is added, If L<=2, then do not remove PRB.
Priority Applications (1)
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CN201310472816.XA CN104580049B (en) | 2013-10-11 | 2013-10-11 | A kind of method of uplink frequency offset compensation |
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CN201310472816.XA CN104580049B (en) | 2013-10-11 | 2013-10-11 | A kind of method of uplink frequency offset compensation |
Publications (2)
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CN104580049A CN104580049A (en) | 2015-04-29 |
CN104580049B true CN104580049B (en) | 2018-02-27 |
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CN201310472816.XA Expired - Fee Related CN104580049B (en) | 2013-10-11 | 2013-10-11 | A kind of method of uplink frequency offset compensation |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107204946B (en) * | 2016-03-18 | 2021-05-04 | 中兴通讯股份有限公司 | Phase compensation method and device for PUSCH (physical uplink shared channel) |
US9887869B2 (en) * | 2016-05-06 | 2018-02-06 | Samsung Electronics Co., Ltd. | Method of compensating carrier frequency offset in receivers |
CN108282421B (en) * | 2017-01-05 | 2020-11-27 | 普天信息技术有限公司 | Method for estimating frequency offset of uplink control channel |
CN115333911B (en) * | 2022-08-15 | 2023-04-07 | 四川创智联恒科技有限公司 | Frequency offset estimation method based on pilot frequency in OFDM system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102137048A (en) * | 2010-01-22 | 2011-07-27 | 中兴通讯股份有限公司 | Method and system for frequency offset estimation |
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US7872961B2 (en) * | 2006-06-29 | 2011-01-18 | Motorola Mobility, Inc. | Orthogonal frequency division multiple access message processing method and apparatus |
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Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102137048A (en) * | 2010-01-22 | 2011-07-27 | 中兴通讯股份有限公司 | Method and system for frequency offset estimation |
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Address after: 100080 Beijing, Haidian, North Street, No. two, No. 6, No. Applicant after: POTEVIO INFORMATION TECHNOLOGY Co.,Ltd. Address before: 100080 Beijing, Haidian, North Street, No. two, No. 6, No. Applicant before: PETEVIO INSTITUTE OF TECHNOLOGY Co.,Ltd. |
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Denomination of invention: An uplink frequency offset compensating method Effective date of registration: 20181026 Granted publication date: 20180227 Pledgee: Bank of Beijing Limited by Share Ltd. Century City Branch Pledgor: POTEVIO INFORMATION TECHNOLOGY Co.,Ltd. Registration number: 2018990000975 |
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Date of cancellation: 20200708 Granted publication date: 20180227 Pledgee: Bank of Beijing Limited by Share Ltd. Century City Branch Pledgor: POTEVIO INFORMATION TECHNOLOGY Co.,Ltd. Registration number: 2018990000975 |
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Denomination of invention: A method of up line frequency offset compensation Effective date of registration: 20200730 Granted publication date: 20180227 Pledgee: Bank of Beijing Limited by Share Ltd. Century City Branch Pledgor: POTEVIO INFORMATION TECHNOLOGY Co.,Ltd. Registration number: Y2020980004562 |
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Date of cancellation: 20210715 Granted publication date: 20180227 Pledgee: Bank of Beijing Limited by Share Ltd. Century City Branch Pledgor: POTEVIO INFORMATION TECHNOLOGY Co.,Ltd. Registration number: Y2020980004562 |
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