WO2010032815A1 - 移動局 - Google Patents
移動局 Download PDFInfo
- Publication number
- WO2010032815A1 WO2010032815A1 PCT/JP2009/066346 JP2009066346W WO2010032815A1 WO 2010032815 A1 WO2010032815 A1 WO 2010032815A1 JP 2009066346 W JP2009066346 W JP 2009066346W WO 2010032815 A1 WO2010032815 A1 WO 2010032815A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mobile station
- transmission
- control unit
- dft
- radio access
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 85
- 238000000034 method Methods 0.000 claims abstract description 45
- 238000004891 communication Methods 0.000 claims abstract description 38
- 238000010586 diagram Methods 0.000 description 15
- 238000013507 mapping Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 238000010295 mobile communication Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000013468 resource allocation Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000007476 Maximum Likelihood Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
-
- 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
- H04L27/2614—Peak power aspects
-
- 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]
-
- 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
- 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
-
- 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
Definitions
- the present invention relates to a mobile station configured to perform MIMO (Multiple Input Multiple Output) communication.
- MIMO Multiple Input Multiple Output
- any combination of existing multi-carrier transmission and single-carrier transmission is optimal in terms of improving transmission characteristics and flexibility of radio resource allocation. It is not considered whether communication can be provided.
- An object of the present invention is to provide a mobile station that can perform communication.
- a first feature of the present invention is a mobile station configured to perform MIMO communication, and is applied based on at least one of a transmission frequency bandwidth used and a number of transmission streams used in the MIMO communication.
- the gist is to include a control unit configured to determine a wireless access method.
- control unit may be configured to determine a configuration of a reference signal to be transmitted based on the applied radio access scheme.
- control unit is a radio access scheme to be applied from at least two of an OFDM scheme, a Clustered DFT-Spread OFDM scheme, a Multi-carrier DFT-S-OFDM scheme, and a DFT-Spread OFDM scheme. May be selected.
- the controller is configured to determine a precoding vector to be used in cluster units when the Clustered DFT-Spread OFDM system is selected as the radio access system to be applied. May be.
- control unit is configured to determine a precoding vector to be used in units of DFT when the Multicarrier DFT-S-OFDM method is selected as the radio access method to be applied. It may be.
- a mobile station capable of providing optimal communication from the viewpoint of improving transmission characteristics and flexibility of radio resource allocation by combining multicarrier transmission and single carrier transmission is provided. can do.
- FIG. 1 is a functional block diagram of a mobile station according to the first embodiment of the present invention.
- FIG. 2 is a diagram illustrating an example of a function for performing multicarrier transmission in the functional block of the mobile station according to the first embodiment of the present invention.
- FIG. 3 is a diagram illustrating an example of a function for performing multicarrier transmission in the functional block of the mobile station according to the first embodiment of the present invention.
- FIG. 4 is a diagram illustrating an example of a function for performing multicarrier transmission in the functional block of the mobile station according to the first embodiment of the present invention.
- FIG. 5 is a diagram illustrating an example of combinations of radio access schemes applied in the mobile station according to the first embodiment of the present invention.
- FIG. 6 is a diagram illustrating an example of combinations of radio access schemes applied in the mobile station according to the first embodiment of the present invention.
- FIG. 7 is a diagram illustrating an example of combinations of radio access schemes applied in the mobile station according to the first embodiment of the present invention.
- FIG. 8 is a diagram illustrating an example of combinations of radio access schemes applied in the mobile station according to the first embodiment of the present invention.
- FIG. 9 is a diagram illustrating an example of categories of mobile stations according to the first embodiment of the present invention.
- FIG. 10 is a diagram illustrating an example of a pilot signal transmission method in the mobile station according to the first embodiment of the present invention.
- FIG. 11 is a diagram illustrating an example of a pilot signal transmission method in the mobile station according to the first embodiment of the present invention.
- FIG. 12 is a diagram illustrating an example of a precoding method used in the mobile station according to the first embodiment of the present invention.
- FIG. 13 is a diagram illustrating an example of a precoding method used in the mobile station according to the first embodiment of the present invention.
- FIG. 14 is a diagram for explaining the effect of the mobile station according to the first embodiment of the present invention.
- FIG. 15 is a diagram for explaining the effect of the mobile station according to the first embodiment of the present invention.
- the mobile station UE according to the present embodiment can be used in an LTE-Advanced mobile communication system, and is configured to perform MIMO communication.
- the mobile station UE includes a switch 10, a DFT (Discrete Fourier Transform) 11, an S / P (Serial-to-Parallel Converter) 12, and a subcarrier mapping unit 13. , A pulse shaping filter 14, an IFFT (Inverted Fast Fourier Transform) 15, a CP (Cyclic Prefix) insertion unit 16, and a control unit 20.
- DFT Discrete Fourier Transform
- S / P Serial-to-Parallel Converter
- subcarrier mapping unit 13 the mobile station UE according to the present embodiment includes a switch 10, a DFT (Discrete Fourier Transform) 11, an S / P (Serial-to-Parallel Converter) 12, and a subcarrier mapping unit 13.
- a pulse shaping filter 14 an IFFT (Inverted Fast Fourier Transform) 15, a CP (Cyclic Prefix) insertion unit 16, and a control unit 20.
- IFFT Inverted Fast Fourier Transform
- CP Cyclic Prefix
- a system for a single carrier transmission scheme (that is, DFT-Spread OFDM scheme) is configured by a DFT 11, a subcarrier mapping unit 13, a pulse shaping filter 14, and an IFFT 15.
- the system for the multicarrier transmission scheme is configured by the S / P 12, the subcarrier mapping unit 13, the pulse shaping filter 14, and the IFFT 15.
- an OFDM system system as shown in FIG. 2 may be used, or a clustered DFT-Spread OFDM system system as shown in FIG. 3 is used.
- a system for Multicarrier DFT-S-OFDM system as shown in FIG. 4 may be used.
- the switch 10 is configured to switch whether the input encoded data symbol is input to a single carrier transmission system or a multicarrier transmission system according to a switching instruction from the control unit 20. ing.
- subcarrier mapping unit 13 can only perform mapping for continuous subcarriers in the single carrier transmission system, but also performs mapping for nonconsecutive subcarriers in the multicarrier transmission system. be able to.
- the control unit 20 is configured to control the function of the mobile station UE as shown in FIG.
- the control unit 20 determines the radio access method to be applied based on at least one of the transmission frequency bandwidth to be used and the number of transmission streams used in the MIMO communication, and based on this determination, the switching instruction to the switch 10 Is configured to send.
- control unit 20 may determine the radio access method to be applied, based on a combination of “used transmission frequency bandwidth” and “number of transmission streams used in MIMO communication” shown in FIG.
- the control unit 20 uses Clustered as a radio access method to be applied. Select the DFT-Spread OFDM method.
- control unit 20 uses Select Clustered DFT-Spread OFDM system.
- control unit 20 uses OFDM as a radio access scheme to apply. Select a method.
- control unit 20 Select the OFDM method.
- control unit 20 may determine the radio access scheme to be applied based on the number of transmission streams used in the MIMO communication regardless of the transmission frequency bandwidth to be used.
- the mobile station UE having only one transmission antenna only needs to support the “clustered function” in addition to the capability required in the LTE (Release 8) scheme (the OFDM scheme). No need to support).
- control unit 20 may determine a radio access scheme to be applied based on a combination of the “transmission frequency bandwidth to be used” and the “number of transmission streams used in MIMO communication” shown in FIG.
- the control unit 20 uses Clustered as a radio access method to be applied. Select the DFT-Spread OFDM method.
- control unit 20 uses Select Clustered DFT-Spread OFDM system.
- control unit 20 uses Clustered as a radio access method to be applied. Select the DFT-Spread OFDM method.
- control unit 20 Select the OFDM method.
- control unit 20 may determine a radio access scheme to be applied based on a combination of “a transmission frequency bandwidth to be used” and “the number of transmission streams used in MIMO communication” illustrated in FIG.
- the control unit 20 sets DFT as a radio access method to be applied. -Select the Spread OFDM method.
- control unit 20 uses Select the OFDM method.
- control unit 20 uses OFDM as a radio access scheme to apply. Select a method.
- control unit 20 Select the OFDM method.
- control unit 20 may determine a radio access scheme to be applied based on a combination of “a transmission frequency bandwidth to be used” and “the number of transmission streams used in MIMO communication” illustrated in FIG.
- the control unit 20 uses Clustered as a radio access method to be applied. Select the DFT-Spread OFDM method.
- control unit 20 uses Select Clustered DFT-Spread OFDM system.
- control unit 20 uses Clustered as a radio access method to be applied. Select DFT-Spread OFDM or OFDM.
- control unit 20 Select the OFDM method.
- FIG. 9 shows the category of the mobile station UE when the combination shown in FIG. 8 is applied. According to FIG. 9, it can be seen that the mobile station UE having only one transmission antenna only needs to support the Clustered DFT-Spread OFDM scheme.
- control unit 20 may be configured to determine the configuration of the reference signal to be transmitted (Reference Signal) based on the applied radio access scheme.
- the control unit 20 uses the reference signal for the transmission antenna # 1 and the reference signal for the transmission antenna # 2. You may decide to perform orthogonal multiplexing which applied the cyclic shift (phase rotation of a frequency domain) of a different CAZAC series.
- the control unit 20 converts the reference signal for the transmission antenna # 1 and the reference signal for the transmission antenna # 2 into different subcarriers when the OFDM scheme is applied. You may decide to perform the orthogonal multiplexing which applied the mapping to a position.
- control unit 20 multiplexes the reference signal for the transmission antenna # 1 and the reference signal for the transmission antenna # 2 with an inter-symbol orthogonal sequence (a code ⁇ between two symbols ⁇ 1, 1 ⁇ , ⁇ 1, -1 ⁇ may be changed to perform multiplexing).
- control unit 20 maps the reference signals for the transmission antennas # 1 to # 4 to different subcarrier positions from the above-described different CAZAC sequence cyclic shifts and orthogonality between symbols. You may decide to perform multiplexing by combination with a series.
- control unit 20 is configured to determine a precoding vector to be used for each cluster as shown in FIG. Also good.
- the frequency selective precoding can prevent the deterioration of PAPR more than necessary for each cluster.
- control unit 20 may be configured to determine a precoding vector to be used in units of DFT when the Multicarrier DFT-S-OFDM method is selected as a radio access method to be applied.
- the frequency selective precoding can prevent the deterioration of PAPR more than necessary for each DFT.
- the mobile station UE when the OFDM scheme is applied, throughput characteristics can be improved in MIMO communication due to excellent resistance to multipath interference of the OFDM scheme.
- the identification by the high-precision signal separation is performed according to the affinity for the maximum likelihood estimation (MLD) reception of the OFDM scheme. Improvements can be realized.
- 15 (a) and 15 (b) show the throughput when the OFDM method (multicast transmission method) using MLD is used in 4-by-4 MIMO communication and 2-by-2 MIMO communication.
- An experimental result for comparing the DS-CDMA system used with SIC (throughput when a single-cast transmission system is used) will be described.
- the throughput when the OFDM method (multicast transmission method) using MLD is used is the DS-CDMA method (single cast transmission) using SIC. It is clearly higher than the throughput when the scheme is used.
- the operation of the mobile station UE described above may be implemented by hardware, may be implemented by a software module executed by a processor, or may be implemented by a combination of both.
- Software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, and Hard Disk). Alternatively, it may be provided in an arbitrary format storage medium such as a CD-ROM.
- the storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor. Further, such a storage medium and a processor may be provided in the ASIC. Such an ASIC may be provided in the mobile station UE. Further, the storage medium and the processor may be provided in the mobile station UE as a discrete component.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Discrete Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Abstract
Description
図1乃至図13を参照して、本発明の第1の実施形態に係る移動局UEの構成について説明する。本実施形態に係る移動局UEは、LTE-Advanced方式の移動通信システムで使用可能なものであって、MIMO通信を行うことができるように構成されている。
本実施形態に係る移動局UEによれば、OFDM方式、Clustered DFT-Spread OFDM方式又はMulticarrier DFT-S-OFDM方式が適用された場合には、非連続な無線リソース(例えば、A1及びA2)の割り当てを実現することができる。
Claims (5)
- MIMO(Multiple Input Multiple Output)通信を行うように構成されている移動局であって、
使用する送信周波数帯域幅及び前記MIMO通信において利用する送信ストリーム数の少なくとも一方に基づいて、適用する無線アクセス方式を決定するように構成されている制御部を具備することを特徴とする移動局。 - 前記制御部は、前記適用する無線アクセス方式に基づいて、送信する参照信号の構成を決定するように構成されていることを特徴とする請求項1に記載の移動局。
- 前記制御部は、OFDM方式、Clustered DFT-Spread OFDM方式、Multicarrier DFT-S-OFDM方式、DFT-Spread OFDM方式の少なくとも2つの中から、前記適用する無線アクセス方式を選択するように構成されていることを特徴とする請求項1に記載の移動局。
- 前記制御部は、前記適用する無線アクセス方式として、Clustered DFT-Spread OFDM方式を選択した場合、クラスター単位で、使用するプリコーディングベクトルを決定するように構成されていることを特徴とする請求項3に記載の移動局。
- 前記制御部は、前記適用する無線アクセス方式として、Multicarrier DFT-S-OFDM方式を選択した場合、DFT単位で、使用するプリコーディングベクトルを決定するように構成されていることを特徴とする請求項3に記載の移動局。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP09814659.0A EP2333996B1 (en) | 2008-09-22 | 2009-09-18 | Mobile station |
PL09814659T PL2333996T3 (pl) | 2008-09-22 | 2009-09-18 | Stacja przenośna |
US13/120,337 US8630366B2 (en) | 2008-09-22 | 2009-09-18 | Mobile station |
CN200980136950.4A CN102160312B (zh) | 2008-09-22 | 2009-09-18 | 移动台 |
Applications Claiming Priority (2)
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JP2008-242909 | 2008-09-22 | ||
JP2008242909A JP5238426B2 (ja) | 2008-09-22 | 2008-09-22 | 移動局 |
Publications (1)
Publication Number | Publication Date |
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WO2010032815A1 true WO2010032815A1 (ja) | 2010-03-25 |
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ID=42039636
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PCT/JP2009/066346 WO2010032815A1 (ja) | 2008-09-22 | 2009-09-18 | 移動局 |
Country Status (7)
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US (1) | US8630366B2 (ja) |
EP (1) | EP2333996B1 (ja) |
JP (1) | JP5238426B2 (ja) |
KR (1) | KR20110063476A (ja) |
CN (1) | CN102160312B (ja) |
PL (1) | PL2333996T3 (ja) |
WO (1) | WO2010032815A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10397947B2 (en) | 2016-08-12 | 2019-08-27 | Qualcomm Incorporated | Adaptive waveform selection in wireless communications |
Families Citing this family (6)
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JP5515559B2 (ja) | 2009-09-25 | 2014-06-11 | ソニー株式会社 | 通信システム、基地局、および通信装置 |
JP5622840B2 (ja) * | 2010-04-05 | 2014-11-12 | パナソニックインテレクチュアル プロパティ コーポレーション オブアメリカPanasonic Intellectual Property Corporation of America | 送信装置、送信電力制御方法及び送信判定方法 |
JP5708345B2 (ja) | 2011-07-26 | 2015-04-30 | 富士通株式会社 | 無線装置、及び通信制御方法 |
US8649307B1 (en) * | 2011-08-02 | 2014-02-11 | Xilinx, Inc. | Mobile communication with modes for single carrier and spatial and frequency multiplexing |
US10009209B2 (en) | 2013-03-28 | 2018-06-26 | Huawei Technologies Co., Ltd. | System and method for generalized multi-carrier frequency division multiplexing |
CN112534885B (zh) * | 2018-07-27 | 2022-10-04 | 华为技术有限公司 | 用于多天线通信的系统和方法 |
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2008
- 2008-09-22 JP JP2008242909A patent/JP5238426B2/ja active Active
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2009
- 2009-09-18 CN CN200980136950.4A patent/CN102160312B/zh active Active
- 2009-09-18 US US13/120,337 patent/US8630366B2/en active Active
- 2009-09-18 WO PCT/JP2009/066346 patent/WO2010032815A1/ja active Application Filing
- 2009-09-18 PL PL09814659T patent/PL2333996T3/pl unknown
- 2009-09-18 EP EP09814659.0A patent/EP2333996B1/en active Active
- 2009-09-18 KR KR1020117006580A patent/KR20110063476A/ko not_active Application Discontinuation
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US10397947B2 (en) | 2016-08-12 | 2019-08-27 | Qualcomm Incorporated | Adaptive waveform selection in wireless communications |
US11122614B2 (en) | 2016-08-12 | 2021-09-14 | Qualcomm Incorporated | Adaptive waveform selection in wireless communications |
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US12052725B2 (en) | 2016-08-12 | 2024-07-30 | Qualcomm Incorporated | Adaptive waveform selection in wireless communications |
Also Published As
Publication number | Publication date |
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PL2333996T3 (pl) | 2018-08-31 |
US8630366B2 (en) | 2014-01-14 |
JP2010074760A (ja) | 2010-04-02 |
KR20110063476A (ko) | 2011-06-10 |
CN102160312A (zh) | 2011-08-17 |
JP5238426B2 (ja) | 2013-07-17 |
EP2333996A1 (en) | 2011-06-15 |
CN102160312B (zh) | 2015-04-29 |
US20110216850A1 (en) | 2011-09-08 |
EP2333996B1 (en) | 2018-06-13 |
EP2333996A4 (en) | 2012-05-09 |
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