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公开(公告)号：US20150016576A1
公开(公告)日：2015-01-15
申请号：US14307134
申请日：2014-06-17
申请人： NXP B.V.
发明人： Arie Geert Cornelis Koppelaar , Alessio Filippi , Artur Tadeusz Burchard , Hong Li , Andrew Turley
CPC分类号： H04B7/0404 , H04B1/06 , H04B7/08 , H04W88/085
摘要： A distributed radio system comprising a first receiver (1) and a second receiver (2) each receiver comprising a tuner (11, 21) adapted to receive radio signals and to transmit tuned radio signals, a first baseband unit (12, 22) coupled to the tuner (11,21) and adapted to receive the tuned radio signals and to partially demodulate the tuned radio signals, the first baseband unit (12,22) being further adapted to transmit partially demodulated signals, a second baseband unit (14, 24).The distributed radio system further comprising a digital communication channel (3) adapted to receive the partially demodulated signals and to redistribute the partially demodulated signals to the second baseband unit (14, 24).
摘要翻译： 一种分布式无线电系统，包括第一接收机（1）和第二接收机（2），每个接收机包括适于接收无线电信号并发送调谐的无线电信号的调谐器（11,21）;第一基带单元（12,22） 调谐器（11,21）并且适于接收经调谐的无线电信号并且部分地解调所调谐的无线电信号，所述第一基带单元（12,22）还适于发送部分解调的信号，第二基带单元（14， 24）。 分布式无线电系统还包括适于接收部分解调的信号并将部分解调的信号重新分配到第二基带单元（14,24）的数字通信信道（3）。
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12.发明授权公开(公告)号：US11573312B2
公开(公告)日：2023-02-07
申请号：US17190222
申请日：2021-03-02
申请人： NXP B.V.
IPC分类号： G01S13/44
摘要： A mechanism is provided for determining an unambiguous direction of arrival (DoA) for radio frequency (RF) signals received by a sparse array. A DoA angle domain is split into hypothesis regions. The hypothesis regions are derived from the phase differences of the antenna element pairs used for the DoA angle estimate. In each hypothesis region, the ambiguous phase of antenna element pairs is unwrapped according to expected wrap-around. After unwrapping the phase, for each hypothesis region, a phasor is calculated by combining the individual antenna element pair phasors. The hypothesis region that obtains the phasor with a largest amplitude is selected as the most likely DoA region and the phase of the winning phasor is used as an unambiguous estimate for the DoA angle.
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公开(公告)号：US20220187438A1
公开(公告)日：2022-06-16
申请号：US17451515
申请日：2021-10-20
申请人： NXP B.V.
IPC分类号： G01S13/532 , G01S13/58 , G01S7/288
摘要： A radar processor for processing a frame of radar data received from one or more targets, the frame of radar data having a carrier frequency and comprising a sequence of codewords with a codeword repetition interval, wherein the carrier frequency and the codeword repetition interval define an unambiguous velocity range, the radar processor configured to: receive the frame of radar data; transform the frame to obtain a velocity data array; apply a correction algorithm to the velocity data array to correct a Doppler shift of the frame to obtain a corrected array, wherein the correction algorithm comprises a set of Doppler correction frequencies corresponding to a set of velocity gates and at least one of the set of Doppler correction frequencies corresponds to a velocity gate outside the unambiguous velocity range; and perform range processing on the corrected array to obtain a range-Doppler map.
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公开(公告)号：US10939359B2
公开(公告)日：2021-03-02
申请号：US16449699
申请日：2019-06-24
申请人： NXP B.V.
摘要： Aspects of the disclosure are directed to a communications environment involving a plurality of remote transmitters that communicate over respective subchannels. As may be implemented in accordance with one or more embodiments, energy characteristics of wireless transmissions received from one of the remote transmitters and a location that remote transmitter are respectively ascertained, for each of such subchannels. One of the subchannels is selected based on the ascertained energy characteristics and locations of the remote transmitters, and data is generated for transmission over the selected one of the subchannels.
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公开(公告)号：US10785650B2
公开(公告)日：2020-09-22
申请号：US15898304
申请日：2018-02-16
申请人： NXP B.V.
IPC分类号： H04W12/08 , H04L5/00 , H04W64/00 , H04B7/06 , H04L27/00 , H04B7/08 , H04W12/10 , H04L7/04 , G07C9/00 , H04W12/12 , H04W12/00
摘要： A processing module for a receiver device is disclosed. The processing module is configured to provide for processing of a signal received by the receiver device from a transmitter device. The signal includes a secure training sequence divided into a plurality of time spaced blocks. The secure training sequence incoudes a non-repeating pattern of symbols. The processing module is configured to, based on a first phase marker in the first block and a second phase marker in the second block defining a phase difference of the signal between the first and second antennas and a known spacing of the first antenna relative to the second antenna, determine an angle of arrival of the signal relative to the receiver device.
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公开(公告)号：US20170117934A1
公开(公告)日：2017-04-27
申请号：US14923871
申请日：2015-10-27
申请人： NXP B.V.
发明人： Arie Geert Cornelis Koppelaar , Andries Pieter Hekstra , Frank Harald Erich Ho Chung Leong , Stefan Drude , Marinus van Splunter
IPC分类号： H04B1/7117 , H04B1/10
CPC分类号： H04B1/7117 , H04B1/1081 , H04B1/712 , H04B1/71637 , H04B1/719
摘要： A receiver for receiving an input signal is disclosed. The receiver includes a processor, a memory, a plurality of sub-receivers configured to receive a plurality of versions of the input signal through a plurality of transmission channels, a sub-receiver selection module configured to select one more of the plurality of sub-receivers using expected contributions to signal-to-noise (SNR) of an output signal based on an uncertainty of the estimated contributions. The receiver also includes a combiner to combine outputs of the selected sub-receivers to produce the output signal.
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公开(公告)号：US09071492B2
公开(公告)日：2015-06-30
申请号：US13860709
申请日：2013-04-11
申请人： NXP B.V.
CPC分类号： H04L27/2649 , H04L1/208 , H04L25/022 , H04L25/0224 , H04L25/03159 , H04L25/03292 , H04L25/03324 , H04L27/2647
摘要： A first error-correcting decoder, adapted to decode the data bits of a received OFDM symbol; a re-encoder, to receive decoded bits and adapted to re-encode a leading portion of the decoded bits; a mapper, to receive the re-encoded leading portion of bits, map these bits to a corresponding subset of the plurality of sub-carriers, and thereby estimate a modulation symbol that was applied to each sub-carrier of said subset a channel estimator, to produce a channel estimate by comparing the sub-carrier modulation symbols with the corresponding sub-carriers actually received by the receiver; and an equalizer, to process the received signal to remove distortions introduced by the transmission channel, using the channel estimate, the re-encoder is adapted to begin re-encoding the leading portion of the bits before a trailing portion of the bits has been decoded by the decoder.
摘要翻译： 第一纠错解码器，适于解码所接收的OFDM符号的数据位; 一个重新编码器，用于接收经解码的比特并适于重新编码解码的比特的前导部分; 映射器，用于接收重新编码的前导部分的比特，将这些比特映射到多个子载波的相应子集，从而估计应用于所述子集的每个子载波的调制符号，信道估计器， 通过将子载波调制符号与由接收机实际接收的相应副载波进行比较来产生信道估计; 以及均衡器，为了处理接收的信号以消除由传输信道引入的失真，使用信道估计，重新编码器适于在比特的尾部部分被解码之前开始重新编码比特的前导部分 由解码器。
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公开(公告)号：US20230102833A1
公开(公告)日：2023-03-30
申请号：US17823288
申请日：2022-08-30
申请人： NXP B.V.
摘要： A method of processing radar signalling, the method comprising: receiving a mask (815) that represents samples in the radar signalling that are detected as including interference. The mask (815) comprises a matrix of data having a first dimension and a second dimension, wherein the first dimension represents a fast-time axis and the second dimension represents a slow-time axis. The method further comprises performing frequency analysis on the mask (815) across each of the fast-time axis and the slow-time axis of the mask in order to provide a range-Doppler processed mask (817); and deconvolving a range-Doppler map (813) of the received radar signalling using the range-Doppler processed mask (817) in order to provide a deconvolved-range-Doppler map (814).
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19.发明申请公开(公告)号：US20220283283A1
公开(公告)日：2022-09-08
申请号：US17190222
申请日：2021-03-02
申请人： NXP B.V.
IPC分类号： G01S13/44
摘要： A mechanism is provided for determining an unambiguous direction of arrival (DoA) for radio frequency (RF) signals received by a sparse array. A DoA angle domain is split into hypothesis regions. The hypothesis regions are derived from the phase differences of the antenna element pairs used for the DoA angle estimate. In each hypothesis region, the ambiguous phase of antenna element pairs is unwrapped according to expected wrap-around. After unwrapping the phase, for each hypothesis region, a phasor is calculated by combining the individual antenna element pair phasors. The hypothesis region that obtains the phasor with a largest amplitude is selected as the most likely DoA region and the phase of the winning phasor is used as an unambiguous estimate for the DoA angle.
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公开(公告)号：US20210367633A1
公开(公告)日：2021-11-25
申请号：US16878381
申请日：2020-05-19
申请人： NXP B.V.
摘要： Aspects of the present disclosure may involve use of a radio frequency receiver and in such a receiver, tracking multipath gains and delays of multipath reflections corresponding to an OFDM multipath transmission channel. The gains and delays are based on time-domain evolution of the channel impulse response. Multipath reflections are searched for and then used to calculate channel correlation information to provide channel estimations to aid in mitigating or cancelling distortion of the received signal.
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