专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

US20240129165A1 METHOD FOR IMPROVED SYNCHRONIZATION BETWEEN A TRANSMITTER AND A RECEIVER ON A WIRELESS NETWORK 审中-公开
公开(公告)号：US20240129165A1
公开(公告)日：2024-04-18
申请号：US18504523
申请日：2023-11-08
申请人： Morse Micro Pty. LTD.
发明人： Peter Bradley , Eyal Mendel
IPC分类号： H04L25/02 , H04L25/03 , H04L25/497
CPC分类号： H04L25/022 , H04L25/03006 , H04L25/497 , H04L2025/03815
摘要： The present disclosure provides a method for estimating timing and/or frequency of a wireless signal; the method including the steps: receiving a digitally modulated signal; extracting a plurality of signal samples associated with a short training field (STF) of a PHY protocol data unit (PPDU) of an 802.11 frame; performing correlation operations on the plurality of signal samples to generate a predetermined number of correlation peaks; comparing the generated correlation peaks with a variable dynamic threshold; and calculating timing and/or frequency of the digitally modulated signal using the outcome of the comparing step.

2. 发明申请

US20180367350A1 HIGH-SPEED SIGNALING SYSTEMS WITH ADAPTABLE PRE-EMPHASIS AND EQUALIZATION 审中-公开
公开(公告)号：US20180367350A1
公开(公告)日：2018-12-20
申请号：US16010445
申请日：2018-06-16
申请人： Rambus Inc.
发明人： Jared L. Zerbe , Fred F. Chen , Andrew Ho , Ramin Farjad-Rad , John W. Poulton , Kevin S. Donnelly , Brian S. Leibowitz
IPC分类号： H04L27/01 , H04L25/03 , H04L1/00 , H04L7/033 , H04L25/497 , H04W52/20 , H04L7/00 , H04L25/02 , H04W52/22
CPC分类号： H04L27/01 , H04L1/0026 , H04L7/0025 , H04L7/0087 , H04L7/0337 , H04L25/0272 , H04L25/028 , H04L25/03057 , H04L25/03343 , H04L25/03885 , H04L25/497 , H04L2025/03503 , H04W52/20 , H04W52/225 , Y02D70/00
摘要： A signaling system includes a pre-emphasizing transmitter and an equalizing receiver coupled to one another via a high-speed signal path. The receiver measures the quality of data conveyed from the transmitter. A controller uses this information and other information to adaptively establish appropriate transmit pre-emphasis and receive equalization settings, e.g. to select the lowest power setting for which the signaling system provides some minimum communication bandwidth without exceeding a desired bit-error rate.

3. 发明授权

US10003484B2 High-speed signaling systems with adaptable pre-emphasis and equalization 有权
公开(公告)号：US10003484B2
公开(公告)日：2018-06-19
申请号：US15652059
申请日：2017-07-17
申请人： Rambus Inc.
发明人： Jared L. Zerbe , Fred F. Chen , Andrew Ho , Ramin Farjad-Rad , John W. Poulton , Kevin S. Donnelly , Brian S. Leibowitz
IPC分类号： H04L27/01 , H04L7/033 , H04L1/00 , H04L25/03 , H04W52/20 , H04L25/497 , H04L25/02 , H04W52/22 , H04L7/00
CPC分类号： H04L27/01 , H04L1/0026 , H04L7/0025 , H04L7/0087 , H04L7/0337 , H04L25/0272 , H04L25/028 , H04L25/03057 , H04L25/03343 , H04L25/03885 , H04L25/497 , H04L2025/03503 , H04W52/20 , H04W52/225 , Y02D70/00
摘要： A signaling system includes a pre-emphasizing transmitter and an equalizing receiver coupled to one another via a high-speed signal path. The receiver measures the quality of data conveyed from the transmitter. A controller uses this information and other information to adaptively establish appropriate transmit pre-emphasis and receive equalization settings, e.g. to select the lowest power setting for which the signaling system provides some minimum communication bandwidth without exceeding a desired bit-error rate.

4. 发明授权

US09838230B2 Pre-coding in a faster-than-Nyquist transmission system 有权
公开(公告)号：US09838230B2
公开(公告)日：2017-12-05
申请号：US15101047
申请日：2014-12-05
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Ather Gattami , Emil Ringh
IPC分类号： H04L25/497 , H04L25/03
CPC分类号： H04L25/497 , H04L25/03834
摘要： The invention refers to faster than Nyquist communication system wherein a set of symbols is conveyed from a transmitter (21) to a receiver (23), wherein the transmitter (21) and the receiver (23) are coupled by means of a transmission channel (22), comprising a precoder (210) adapted for generating a set of precoded symbols from a set of input symbols by performing a matrix operation with a precoding matrix, a pulse filter (212) adapted for generating a transmission signal to be transmitted over the transmission channel (22) as a function of the precoded symbols, a receiving filter (230) adapted for generating a set of sampled symbols as a function of the transmission signal and noise added by the transmission channel, and a decoder (232) adapted for generating a set of decoded symbols as a function of the set of sampled symbols, wherein the elements of the precoding matrix are dependent on a property of the pulse filter (212), The invention further refers to a transmitter, a receiver and corresponding methods, and to a user equipment and a base station.

5. 发明授权

US09819405B2 Systems and methods for transmission pairing mixed transmission modes 有权
公开(公告)号：US09819405B2
公开(公告)日：2017-11-14
申请号：US14738144
申请日：2015-06-12
申请人： Hao Hu , Ming Jia , Jianglei Ma
发明人： Hao Hu , Ming Jia , Jianglei Ma
IPC分类号： H04B10/2569 , H04B7/0456 , H04B7/04 , H04L25/497 , H04L27/34 , H04W88/02 , H04W88/08
CPC分类号： H04B7/0456 , H04B7/0482 , H04B7/0697 , H04L25/497 , H04L27/3488 , H04L27/3494 , H04W88/02 , H04W88/08
摘要： Methods and systems for transmitting a signal. A first signal from a first device operating in spatial multiplexing transmission is concatenated with a second signal from a second device operating without spatial multiplexing transmission to generate a concatenated signal in a non-linearly superpositioned constellation, in which a portion of the constellation corresponding to the first signal is symmetrical about each of the real and imaginary axes. The concatenated signal is processed according to transmission processing of the second device, to generate a processed signal. The processed signal is transmitted.

6. 发明申请

US20170324590A1 SYSTEM AND METHOD FOR ITERATIVE COMPENSATION FOR LINEAR AND NONLINEAR INTERFERENCE IN SYSTEM EMPLOYING FTN SYMBOL TRANSMISSION RATES 有权
公开(公告)号：US20170324590A1
公开(公告)日：2017-11-09
申请号：US15655479
申请日：2017-07-20
申请人： Hughes Network Systems, LLC
发明人： Bassel BEIDAS , Rohit Iyer SESHADRI , Mustafa EROZ , Lin-Nan LEE
IPC分类号： H04L25/03 , H04L1/00 , H04L25/497
CPC分类号： H04L25/03006 , H04L1/0048 , H04L1/005 , H04L1/0054 , H04L25/0314 , H04L25/03165 , H04L25/03834 , H04L25/497
摘要： An approach for increasing transmission throughput of a non-linear wireless channel, and efficient decoding of the transmitted signal via a simplified receiver, is provided. A signal reflects a source signal, and includes linear inter-symbol interference based on a faster-than-Nyquist signaling rate and a tight frequency roll-off, and non-linear interference based on high-power amplification for transmission over the wireless channel. The signal is received over a non-linear wireless channel, and is processed via a plurality of decoding iterations. A set of soft information of a current decoding iteration is generated based on a current estimate of the source signal and a final set of soft information from a previous decoding iteration. The current estimate of the source signal is based on an estimate of the linear ISI and the non-linear interference, which is based on the final set of soft information from the previous decoding iteration.

7. 发明授权

US09716602B2 System and method for iterative compensation for linear and nonlinear interference in system employing FTN symbol transmission rates 有权
公开(公告)号：US09716602B2
公开(公告)日：2017-07-25
申请号：US14326418
申请日：2014-07-08
申请人： Hughes Network Systems, LLC
发明人： Bassel Beidas , Rohit Iyer Seshadri , Mustafa Eroz , Lin-Nan Lee
IPC分类号： H04L27/01 , H04L25/03 , H04L1/00 , H04L25/497
CPC分类号： H04L25/03006 , H04L1/0048 , H04L1/005 , H04L1/0054 , H04L25/0314 , H04L25/03165 , H04L25/03834 , H04L25/497
摘要： An approach for increasing transmission throughput of a non-linear wireless channel, and efficient decoding of the transmitted signal via a simplified receiver, is provided. A signal reflects a source signal, and includes linear inter-symbol interference based on a faster-than-Nyquist signaling rate and a tight frequency roll-off, and non-linear interference based on high-power amplification for transmission over the wireless channel. The signal is received over a non-linear wireless channel, and is processed via a plurality of decoding iterations. A set of soft information of a current decoding iteration is generated based on a current estimate of the source signal and a final set of soft information from a previous decoding iteration. The current estimate of the source signal is based on an estimate of the linear ISI and the non-linear interference, which is based on the final set of soft information from the previous decoding iteration.

8. 发明授权

US09479363B2 Partial response receiver and related method 有权
公开(公告)号：US09479363B2
公开(公告)日：2016-10-25
申请号：US14937558
申请日：2015-11-10
申请人： Rambus Inc.
发明人： Aliazam Abbasfar
IPC分类号： H04L25/03 , H04L25/497 , H03K5/135 , H03K5/15
CPC分类号： H04L25/03019 , H03K5/135 , H03K5/15 , H04L25/03878 , H04L25/03885 , H04L25/497
摘要： A multi-phase partial response equalizer circuit includes sampler circuits that sample an input signal to generate sampled signals in response to sampling clock signals having different phases. A first multiplexer circuit selects one of the sampled signals as a first sampled bit to represent the input signal. A first storage circuit coupled to an output of the first multiplexer circuit stores the first sampled bit in response to a first clock signal. A second multiplexer circuit selects one of the sampled signals as a second sampled bit to represent the input signal based on the first sampled bit. A second storage circuit stores a sampled bit selected from the sampled signals in response to a second clock signal. A time period between the second storage circuit storing a sampled bit and the first storage circuit storing the first sampled bit is substantially greater than a unit interval in the input signal.

9. 发明申请

US20160308697A1 Pre-Coding in a Faster-Than-Nyquist Transmission System 有权
标题翻译：在更快的奈奎斯特传输系统中进行预编码
公开(公告)号：US20160308697A1
公开(公告)日：2016-10-20
申请号：US15101047
申请日：2014-12-05
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： Ather Gattami , Emil Ringh
IPC分类号： H04L25/497 , H04L25/03
CPC分类号： H04L25/497 , H04L25/03834
摘要： The invention refers to faster than Nyquist communication system wherein a set of symbols is conveyed from a transmitter (21) to a receiver (23), wherein the transmitter (21) and the receiver (23) are coupled by means of a transmission channel (22), comprising a precoder (210) adapted for generating a set of precoded symbols from a set of input symbols by performing a matrix operation with a precoding matrix, a pulse filter (212) adapted for generating a transmission signal to be transmitted over the transmission channel (22) as a function of the precoded symbols, a receiving filter (230) adapted for generating a set of sampled symbols as a function of the transmission signal and noise added by the transmission channel, and a decoder (232) adapted for generating a set of decoded symbols as a function of the set of sampled symbols, wherein the elements of the precoding matrix are dependent on a property of the pulse filter (212), The invention further refers to a transmitter, a receiver and corresponding methods, and to a user equipment and a base station.
摘要翻译：本发明涉及奈奎斯特通信系统，其中一组符号从发射机（21）传送到接收机（23），其中发射机（21）和接收机（23）通过传输信道 22），包括预编码器（210），适用于通过使用预编码矩阵执行矩阵运算来从一组输入符号生成一组预编码符号;脉冲滤波器（212），适于产生要在传输信道（22）作为预编码符号的函数;接收滤波器（230），适于生成作为传输信号和由传输信道添加的噪声的函数的一组采样符号;以及解码器（232），适于根据所述采样符号的集合生成解码符号集合，其中所述预编码矩阵的元素取决于所述脉冲滤波器（212）的属性。本发明还涉及发射机，接收机和相应的方法，以及用户设备和基站。

10. 发明申请

US20150256293A1 REDUCED STATE SEQUENCE ESTIMATION WITH SOFT DECISION OUTPUTS 有权
标题翻译：用软决策输出减少状态序列估计
公开(公告)号：US20150256293A1
公开(公告)日：2015-09-10
申请号：US14609655
申请日：2015-01-30
申请人： MagnaCom Ltd.
发明人： Amir Eliaz , Ilan Reuven
IPC分类号： H04L1/00 , H04L27/34 , H04L25/03
CPC分类号： H04L27/2628 , H04L1/0054 , H04L25/02 , H04L25/03038 , H04L25/03159 , H04L25/03197 , H04L25/03821 , H04L25/497 , H04L27/2647 , H04L27/3405 , H04L2025/03414 , H04L2025/0342 , H04L2025/03522
摘要： A receiver may be operable to receive an inter-symbol correlated (ISC) signal, and generate a plurality of soft decisions as to information carried in the ISC signal. The soft decisions may be generated using a reduced-state sequence estimation (RSSE) process. The RSSE process may be such that the number of symbol survivors retained after each iteration of the RSSE process is less than the maximum likelihood state space. The plurality of soft decisions may comprise a plurality of log likelihood ratios (LLRs). Each of the plurality of LLRs may correspond to a respective one of a plurality of subwords of a forward error correction (FEC) codeword.
摘要翻译：接收机可以用于接收符号间相关（ISC）信号，并且生成关于在ISC信号中携带的信息的多个软判决。可以使用缩减状态序列估计（RSSE）过程来产生软判决。 RSSE过程可以使得在RSSE过程的每次迭代之后保留的符号幸存者的数量小于最大似然状态空间。多个软判决可以包括多个对数似然比（LLR）。多个LLR中的每一个可以对应于前向纠错（FEC）码字的多个子词中的相应一个。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式