-
1.
公开(公告)号:WO2022241390A1
公开(公告)日:2022-11-17
申请号:PCT/US2022/072177
申请日:2022-05-06
IPC分类号: H04L5/00 , H04L1/00 , H04L25/00 , H04L25/0204 , H04L25/0224 , H04L5/0007 , H04L5/0048 , H04L5/0051 , H04L5/0094 , H04W72/23
摘要: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a repetition factor associated with a message or an indication that demodulation reference signal (DMRS) bundling is to be applied for the message for joint channel estimation. The UE may communicate a phase tracking reference signal (PTRS) associated with the message based at least in part on receiving the indication of the repetition factor or the indication that DMRS bundling is to be applied. Numerous other aspects are described.
-
公开(公告)号:WO2022188101A1
公开(公告)日:2022-09-15
申请号:PCT/CN2021/080245
申请日:2021-03-11
发明人: LIU, Hao , LI, Baocai , SHI, Dan , YANG, Tao , SONG, Nuan , ZHAO, Yan
IPC分类号: H04L25/00
摘要: Embodiments of the present disclosure relate to methods, apparatuses and computer readable storage media for SRS data transmission. In example embodiments, a method is provided. According to the method, an apparatus forwards, during a first period, first SRS data received from a terminal device to a further apparatus. The further apparatus determines, based on the first SRS data, compression information for compressing SRS data, and transmits the compression information to the apparatus. Thereby, the apparatus compresses, during a second period, second SRS data received from the terminal device based on the compression information, and transmits, during the second period, the compressed second SRS data to the further apparatus. In this way, the SRS data can be effectively compressed, thus reducing the latency of the SRS data transmission.
-
公开(公告)号:WO2022151598A1
公开(公告)日:2022-07-21
申请号:PCT/CN2021/085515
申请日:2021-04-05
申请人: 华为技术有限公司
摘要: 提供了一种DMRS的配置方法,该方法包括:网络设备向终端设备发送第一调度信息,终端设备根据第一调度信息确定第一时间单元的传输是否满足第一条件,当第一时间单元对应的第一调度信息与第二时间单元对应的第二调度信息相同时,第一时间单元上的传输与第二时间单元上的传输满足第一条件,即保持相同的发送功率、相同的预编码、相同的天线端口和相同的频域资源中的至少一项。通过第一调度信息限制了时间单元上的传输,使得终端设备或者网络设备在接收数据时才能够对满足第一条件且满足相位连续性的时间单元上的DMRS进行合并,实现更准确的信道估计,改善对上行传输数据的解调性能。
-
4.
公开(公告)号:WO2022139870A1
公开(公告)日:2022-06-30
申请号:PCT/US2021/034936
申请日:2021-05-28
申请人: ZEKU, INC.
发明人: GU, Jian
摘要: Embodiments of an apparatus and method for iterative correction in wireless communication are disclosed. In an example, a reference signal and an initial data signal are received by an apparatus. The apparatus performs initial channel estimation and interference and noise estimation and initially demodulates the initial data signal. The apparatus then iteratively produces a hard decision, regenerates a regenerated data signal, calculates interference and noise covariance, and obtains a corrected demodulated data signal until a quality is satisfied or a number of iterations have occurred. The apparatus further decodes the demodulated data signal.
-
公开(公告)号:WO2022052073A1
公开(公告)日:2022-03-17
申请号:PCT/CN2020/114907
申请日:2020-09-11
申请人: 北京小米移动软件有限公司
发明人: 李媛媛
摘要: 本公开实施例提供了一种信道估计的方法,其中,应用于发送端,所述方法,包括:在梳状资源上,发送解调参考信号(DMRS);其中,在梳状资源的不同频带上传输的解调参考信号(DMRS)变换到时域后,得到相同的导频序列;相同的多个导频序列的信号能量叠加后,用于无线传输信道的信道估计。
-
公开(公告)号:WO2021229539A1
公开(公告)日:2021-11-18
申请号:PCT/IB2021/054170
申请日:2021-05-14
IPC分类号: H04L5/00 , H04W72/04 , H04W52/32 , H04L25/00 , H04L5/0078 , H04W52/325
摘要: A method, system and apparatus are disclosed. According to one or more embodiments, a network node (16) configured to communicate with a wireless device (22) is provided. The network node (16) includes processing circuitry (68) configured to receive an indication of a wireless device capability to maintain phase coherence within a predefined tolerance for reference signals transmitted by the wireless device (22) in different time slots, receive a first reference signal transmission in a first time slot and a second reference signal transmission in a second time slot where the first reference signal transmission is an aperiodic, AP, reference signal transmission, and perform channel estimation at least in part by combining the first reference signal transmission and the second reference signal transmission.
-
公开(公告)号:WO2021191561A1
公开(公告)日:2021-09-30
申请号:PCT/FR2021/050507
申请日:2021-03-24
IPC分类号: H04L27/00 , H04L25/00 , H04B1/69 , H04B2001/6912 , H04L27/0012
摘要: L'invention concerne un procédé d'estimation de symboles d'information véhiculés par un signal comprenant des chirps modulés. La modulation correspond à une permutation circulaire du motif de variation de la fréquence instantanée d'un chirp de base sur le temps symbole Ts. Un tel procédé comprend, pour une portion du signal représentative d'au moins deux chirps: - une première démodulation de la portion du signal délivrant: une estimation d'un premier symbole de modulation associé à un premier chirp de plus forte amplitude parmi les au moins deux chirps ainsi que de l'amplitude et de la phase du premier chirp; - une génération d'un signal représentatif du premier chirp à partir des estimations précitées; - une soustraction cohérente du signal représentatif du premier chirp à la portion du signal délivrant une portion mise-à-jour du signal; et - une deuxième démodulation de la portion mise-à-jour délivrant une estimation d'un deuxième symbole de modulation associé à un deuxième chirp parmi les au moins deux chirps.
-
8.
公开(公告)号:WO2020009794A1
公开(公告)日:2020-01-09
申请号:PCT/US2019/037368
申请日:2019-06-14
申请人: RAMBUS INC.
IPC分类号: H04L25/00 , H04L25/02 , H04L25/03 , H04L27/00 , H04L27/01 , H04L27/14 , H04L27/22 , H04L27/233
摘要: A PAM-4 DFE receives an input signal distorted by inter- symbol interference (IS I) and expressing a series of symbols each representing one of four pulse amplitudes to convey two binary bits of data per symbol. High-order circuitry resolves the most-significant bit (MSB) of each two-bit symbol, whereas low-order circuitry 115 resolves the immediate least-significant bit (LSB). An immediate value of the MSB is used to select a set of IS I offsets used to resolve the LSB. Resolved values of the prior values of the MSB and LSB are then used to select the IS I offset for the immediate symbol.
-
公开(公告)号:WO2019186040A1
公开(公告)日:2019-10-03
申请号:PCT/FR2019/050668
申请日:2019-03-25
摘要: La présente invention a pour objet un procédé de transmission de mesures réalisées par un capteur vers un récepteur via un lien de communication sans fil, ledit capteur comprenant un élément sensible, un microcontrôleur, un modulateur et un module émetteur. Le procédé comprend notamment une étape de codage binaire, par le microcontrôleur, des mesures réalisées par l'élément sensible et une étape d'envoi, de manière alternative, des valeurs numériques codées et de leur complément à un sous la forme d'un signal modulé.
-
公开(公告)号:WO2017203535A1
公开(公告)日:2017-11-30
申请号:PCT/IN2016/050153
申请日:2016-05-24
CPC分类号: H04L25/03019 , H04L25/03057 , H04L2025/03363 , H04L2025/03426 , H04L2025/03636
摘要: The present invention is a multilevel equalizer bearing dual equalizer units for performing equalization operations before and after the combination of multipath signals. The Pre-Combining Equalizer functions on the basis of the Least Mean Square (LMS) Criterion and the Linear Predictive Filtering method by use of the Bit Error Rate (BER) code of the final output, which minimizes the errors caused by multipath delays and Inter-Symbol Interferences (ISI). The post-combining equalizer effectively reduces the errors that are induced as a result of imperfect combining. Such a system can suitably function by the employment of Forward Error Correction (FEC) having lower code rate that can be effective for obtaining higher bandwidth.
摘要翻译: 本发明是一种具有双均衡器单元的多级均衡器,用于在多路径信号组合之前和之后执行均衡操作。 基于最小均方(LMS)准则和线性预测滤波方法的预组合均衡器功能通过使用最终输出的误码率(BER)码,其最小化由多径延迟和Inter引起的误差 - 符号干扰(ISI)。 后合并均衡器有效地减少了由于不完美合并而导致的错误。 这样的系统可以通过使用具有较低码率的前向纠错(FEC)来适当地起作用,这可以有效地获得较高的带宽。 p>
-
-
-
-
-
-
-
-
-