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公开(公告)号：US10374667B2
公开(公告)日：2019-08-06
申请号：US14496001
申请日：2014-09-25
Applicant: Apple Inc.
Inventor： Jianglei Ma , Ming Jia , Hua Xu , Wen Tong , Peiying Zhu , Moussa Abdi
IPC: H04B7/04 , H04B7/0452 , H04L5/00 , H04L27/26 , H04W72/04 , H04B7/0413 , H04W88/08 , H04J13/18 , H04L1/06 , H04L25/02 , H04J13/16
Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.
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公开(公告)号：US20190036576A1
公开(公告)日：2019-01-31
申请号：US16151636
申请日：2018-10-04
Applicant: Apple Inc.
Inventor： Jianglei Ma , Ming Jia , Hua Xu , Wen Tong , Peiying Zhu , Moussa Abdi
IPC: H04B7/0452 , H04W88/08 , H04B7/0413 , H04W72/04 , H04L27/26 , H04J13/18 , H04L5/00 , H04J13/16 , H04L1/06 , H04L25/02
Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.
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公开(公告)号：US20180069615A1
公开(公告)日：2018-03-08
申请号：US15796071
申请日：2017-10-27
Applicant: APPLE INC.
Inventor： Jianglei Ma , Ming Jia , Jianming Wu , Peiying Zhu , Wen Tong , Evelyne Le Strat , Sarah Boumendil , Moussa Abdi
IPC: H04B7/06
Abstract: Spatial multiplexing and transmit diversity can improve the capacity of a wireless communication system. The system and method adapts communication schemes for communication systems with multiple antennas utilizing at least two transmission modes. The at least two transmission modes can, but are not necessarily, used for uplink communications. The two transmission modes may be chosen from the group consisting of a single antenna mode, a diversity mode a spatial multiplexed mode and a mixed diversity and spatial multiplexed mode. The at least two transmission modes may involve adaptation among multiple transmitters. At least one receiver may indicate a transmission mode to be used by a transmitter for a subsequent transmission. A transmitter may determine a transmission mode to be used for a subsequent transmission. The transmission mode can be based on channel sounding.
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Patent Agency Ranking
公开(公告)号：US20150049738A1
公开(公告)日：2015-02-19
申请号：US14496001
申请日：2014-09-25
Applicant: Apple Inc.
Inventor： Jianglei Ma , Ming Jia , Hua Xu , Wen Tong , Peiying Zhu , Moussa Abdi
CPC classification number: H04B7/0452 , H04B7/0413 , H04J13/18 , H04J2013/165 , H04L1/0625 , H04L5/001 , H04L5/0026 , H04L5/0032 , H04L5/0048 , H04L5/005 , H04L5/0051 , H04L25/0226 , H04L25/0228 , H04L27/2613 , H04W72/04 , H04W72/044 , H04W88/08
Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.
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公开(公告)号：US20150010097A1
公开(公告)日：2015-01-08
申请号：US14493591
申请日：2014-09-23
Applicant: Apple Inc.
Inventor： Jianglei Ma , Ming Jia , Hua Xu , Wen Tong , Peiying Zhu , Moussa Abdi
CPC classification number: H04B7/0452 , H04B7/0413 , H04J13/18 , H04J2013/165 , H04L1/0625 , H04L5/001 , H04L5/0026 , H04L5/0032 , H04L5/0048 , H04L5/005 , H04L5/0051 , H04L25/0226 , H04L25/0228 , H04L27/2613 , H04W72/04 , H04W72/044 , H04W88/08
Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.
Abstract translation: 本发明采用诸如单载波FDM通信系统的频分多址（FDM）通信系统的导频方案。 给定的传输时间间隔将包括多个业务符号和两个或更多个短导频符号，它们彼此间隔开至少一个业务符号，并且将具有小于任何给定业务的傅里叶变换长度的傅里叶变换长度 符号。 多个发射机将产生导频信息，并以正交方式将导频信息调制到短导频符号的子载波上。 每个发射机可以在时间和频域内使用不同的子载波，由发射时间间隔内的短导频符号包围。 或者，每个发射机可以使用唯一的码分多路复用码对导频信息进行唯一的编码，并将编码的导频信息调制到短导频符号的公共子载波上。
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公开(公告)号：US11349531B2
公开(公告)日：2022-05-31
申请号：US17009405
申请日：2020-09-01
Applicant: Apple Inc.
Inventor： Jianglei Ma , Ming Jia , Hua Xu , Wen Tong , Peiying Zhu , Moussa Abdi
IPC: H04W4/00 , H04B7/0452 , H04L5/00 , H04L27/26 , H04W72/04 , H04B7/0413 , H04W88/08 , H04J13/18 , H04L1/06 , H04L25/02 , H04J13/16
Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.
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公开(公告)号：US11223397B2
公开(公告)日：2022-01-11
申请号：US16786679
申请日：2020-02-10
Applicant: Apple Inc.
Inventor： Jianglei Ma , Ming Jia , Hua Xu , Wen Tong , Peiying Zhu , Moussa Abdi
IPC: H04W4/00 , H04B7/0452 , H04L5/00 , H04L27/26 , H04W72/04 , H04B7/0413 , H04W88/08 , H04J13/18 , H04L1/06 , H04L25/02 , H04J13/16
Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.
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公开(公告)号：US20150016394A1
公开(公告)日：2015-01-15
申请号：US14499316
申请日：2014-09-29
Applicant: Apple Inc.
Inventor： Jianglei Ma , Ming Jia , Hua Xu , Wen Tong , Peiying Zhu , Moussa Abdi
CPC classification number: H04B7/0452 , H04B7/0413 , H04J13/18 , H04J2013/165 , H04L1/0625 , H04L5/001 , H04L5/0026 , H04L5/0032 , H04L5/0048 , H04L5/005 , H04L5/0051 , H04L25/0226 , H04L25/0228 , H04L27/2613 , H04W72/04 , H04W72/044 , H04W88/08
Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.
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