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1. 发明授权

EP2556637B1 METHOD AND SYSTEM FOR REDUCING INTER CARRIER INTERFERENCE FOR OFDM 有权
公开(公告)号：EP2556637B1
公开(公告)日：2018-10-03
申请号：EP11766061.3
申请日：2011-02-16
申请人： LG Electronics Inc.
发明人： ROH, Dongwook
IPC分类号： H04L27/26
CPC分类号： H04L27/3472
摘要： According to one embodiment, a method of encoding a plurality of orthogonal frequency division multiplexing (OFDM) signals is disclosed. The method includes: modulating the plurality of OFDM signals according to a modulation scheme, wherein the modulated OFDM signals are mapped to a first axis and a second axis perpendicular to the first axis, and correspond to a first constellation having a plurality of points symmetric with respect to the first axis and the second axis; and differentially encoding the plurality of OFDM signals according to a second constellation plurality of points defined by shifting a position of one of the first constellation plurality of points toward an origin located at an intersection of the first axis and the second axis.

2. 发明授权

EP2975868B1 WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD 有权
标题翻译：无线通信设备和无线通信方法
公开(公告)号：EP2975868B1
公开(公告)日：2018-03-14
申请号：EP15183313.4
申请日：2010-01-18
申请人： Sony Corporation
发明人： Takano, Hiroaki
IPC分类号： H04W4/18 , H04J11/00 , H04J99/00 , H04W16/28 , H04L1/18 , H04L1/00 , H04B7/04 , H04L27/26 , H04W88/06 , H04L27/34 , H04L27/00
CPC分类号： H04L27/2602 , H04B7/0413 , H04L1/1854 , H04L1/1887 , H04L5/0028 , H04L27/0008 , H04L27/0012 , H04L27/18 , H04L27/2647 , H04L27/2649 , H04L27/2657 , H04L27/3472 , H04W4/18 , H04W40/02 , H04W88/06
摘要： Provided is a wireless communication device and a wireless communication method which can maintain compatibility with a plurality of communication schemes and send a response signal back within the allowed time specified by each communication scheme. The wireless communication device includes a radio receiving unit (120) that receives a packet having a format conforming to a first communication scheme and including a second format portion conforming to a second communication scheme using a higher frequency band than the first communication scheme and a first format portion excluding the second format portion, and a processing unit (160) that, outputs a response signal at completion of demodulation and decoding of the first format portion, regardless of whether demodulation and decoding of the second format portion are completed or not. Representative Drawing

3. 发明公开

EP1915822A4 MANAGING SPECTRA OF MODULATED SIGNALS IN A COMMUNICATION NETWORK 有权转让
标题翻译：通信网络中的管理频谱调制信号
公开(公告)号：EP1915822A4
公开(公告)日：2011-10-19
申请号：EP06788973
申请日：2006-07-27
申请人： QUALCOMM ATHEROS INC
发明人： YONGE III LAWRENCE W
IPC分类号： H04B3/54
CPC分类号： H04L12/43 , H04B3/54 , H04L5/0028 , H04L5/0042 , H04L5/0092 , H04L25/03847 , H04L27/0008 , H04L27/2053 , H04L27/2623 , H04L27/3411 , H04L27/3472

4. 发明公开

EP2259477A2 Hybrid ARQ method with signal constellation rearrangement 有权
标题翻译： BrückenverfahrenBrigenverfahren的签名者Signalkonstellation-Neuanordnung
公开(公告)号：EP2259477A2
公开(公告)日：2010-12-08
申请号：EP10178347.0
申请日：2001-02-21
申请人： Panasonic Corporation
发明人： Golitschek Edler von Elbwart, Alexander , Wengerter, Christian , Schmitt, Michael Philipp , Seidel, Eiko
IPC分类号： H04L1/18 , H04L27/34
CPC分类号： H04L1/1816 , H04L1/0003 , H04L1/1812 , H04L1/1819 , H04L27/34 , H04L27/3472
摘要： A hybrid ARQ retransmission method in a communication system, wherein data packets being encoded with a forward error correction (FEC) technique prior to transmission, are retransmitted based on an automatic repeat request and subsequently soft-combined with previously received erroneous data packets either on a symbol-by-symbol or a bit-by-bit basis. The symbols of said erroneous data packets are modulated by employing a predetermined first signal constellation. The symbols of the retransmitted data packets are modulated by employing at least a predetermined second signal constellation. Each symbol bit has a mean bit reliability defined by the individual bit reliabilities over all symbols of the predetermined signal constellation. According to the invention, the predetermined first and the at least second signal constellation are selected such that the combined mean bit reliabilities for the respective bits of all transmissions are averaged out.
摘要翻译：在通信系统中的混合ARQ重传方法，其中在传输之前用前向纠错（FEC）技术编码的数据分组基于自动重传请求被重传，并且随后在先前接收到的错误数据分组上进行软组合逐符号或逐位的基础。通过采用预定的第一信号星座来调制所述错误数据分组的符号。通过采用至少预定的第二信号星座来调制重传的数据分组的符号。每个符号位具有由预定信号星座的所有符号上的各个比特可靠性定义的平均比特可靠性。根据本发明，选择预定的第一和至少第二信号星座，使得对于所有传输的各个比特的组合的平均比特可靠性被平均化。

5. 发明公开

EP0490551A3 Technique for compensating for intersymbol interference 失效
标题翻译：用于互补干扰的技术
公开(公告)号：EP0490551A3
公开(公告)日：1993-05-12
申请号：EP91311194.4
申请日：1991-12-02
申请人： AT&T Corp.
发明人： Wei, Lee-Fang
IPC分类号： H04L25/497 , H04L27/34
CPC分类号： H04L25/4975 , H04L25/03343 , H04L25/497 , H04L27/3438 , H04L27/3472
摘要： In a communications system, a generalized partial response signaling (GPRS) technique is employed to compensate for intersymbol interference. To this end, signal points representative of data to be transmitted are selected from a signal constellation. This signal constellation includes a multiplicity of signal points which are regularly spaced within a polygonal region having more than four sides. The selected signal points are precoded in the transmitter in accordance with the GPRS technique. Because of the particular choice of the signal constellation used, the precoded signal points for transmission occupies a region identical to the polygonal region.

6. 发明公开

EP3404883A1 TRANSMITTER, RECEIVER AND SIGNAL PROCESSING METHOD 有权
公开(公告)号：EP3404883A1
公开(公告)日：2018-11-21
申请号：EP16887569.8
申请日：2016-08-09
申请人： Huawei Technologies Co., Ltd.
发明人： HUANG, Hao , ZHAO, Lei , DUAN, Bo
IPC分类号： H04L27/36 , H04L27/38
CPC分类号： H04L27/3472 , G06F11/10 , H04B10/541 , H04B10/60 , H04L27/2096 , H04L27/223 , H04L27/36 , H04L27/361 , H04L27/389
摘要： Embodiments of the present invention provide a transmitter, a receiver, and a signal processing method. The transmitter includes a constellation mapper (310), a signal conversion module (320), a digital signal processor (330), and a digital-to-analog converter (340). The constellation mapper (310) is configured to determine a mapping relationship between a bit stream and a constellation point in a polar coordinate system, and generate a constellation symbol data flow according to the mapping relationship. The signal conversion module (320) is configured to convert the constellation symbol data flow into an amplitude signal and a phase signal, where the amplitude signal is a 2-level analog signal, and the phase signal is an 8-level digital signal. The digital signal processor (330) is configured to perform digital signal processing on the phase signal, to generate a multi-level digital signal. The digital-to-analog converter (340) is configured to convert the multi-level digital signal into a multi-level analog signal. According to the embodiments of the present invention, complexity, power consumption, and costs of a communications system are reduced.

7. 发明公开

EP3298743A1 MODULATION FOR A WIRELESS COMMUNICATION NETWORK 失效
标题翻译：一种无线通信网络的调制
公开(公告)号：EP3298743A1
公开(公告)日：2018-03-28
申请号：EP15730877.6
申请日：2015-05-21
申请人： Telefonaktiebolaget LM Ericsson (PUBL)
发明人： BALDEMAIR, Robert , DAHLMAN, Erik , BALACHANDRAN, Kumar
IPC分类号： H04L27/10 , H04L27/12 , H04L27/14 , H04L27/16 , H04L27/32 , H04L27/34 , H04L27/36 , H04L27/38 , H04L5/00
CPC分类号： H04L27/10 , H04L5/003 , H04L5/0044 , H04L27/12 , H04L27/14 , H04L27/16 , H04L27/2602 , H04L27/30 , H04L27/32 , H04L27/34 , H04L27/3405 , H04L27/345 , H04L27/3472 , H04L27/36 , H04L27/362 , H04L27/38
摘要： There is disclosed a method for operating a wireless device in a wireless communication network, the method comprising modulating a plurality of input bits (N), wherein modulating comprises choosing a first number (k) of frequencies from a predetermined set of a total number (NF) of frequencies, the first number (k) being larger than 1, and performing quadrature amplitude modulation to a second number (NQ) on each of the first number (k) of frequencies. There are further disclosed related methods and devices.

8. 发明授权

EP2259477B1 Hybrid ARQ method with signal constellation rearrangement 有权
标题翻译：具有信号星座重排的混合ARQ方法
公开(公告)号：EP2259477B1
公开(公告)日：2017-07-19
申请号：EP10178347.0
申请日：2001-02-21
申请人： Panasonic Intellectual Property Corporation of America
发明人： Golitschek Edler von Elbwart, Alexander , Wengerter, Christian , Schmitt, Michael Philipp , Seidel, Eiko
IPC分类号： H04L1/00 , H04L27/34 , H04L1/18
CPC分类号： H04L1/1816 , H04L1/0003 , H04L1/1812 , H04L1/1819 , H04L27/34 , H04L27/3472

9. 发明授权

EP1760928B1 Hybrid ARQ method with mapping rearrangement of the signals constellation 有权
标题翻译：混合ARQ方法与图中的信号星座的重排
公开(公告)号：EP1760928B1
公开(公告)日：2011-11-02
申请号：EP06021982.1
申请日：2001-02-21
申请人： Panasonic Corporation
发明人： Golitschek Edler von Elbwart, Alexander , Wengerter, Christian , Schmitt, Michael Philipp , Seidel, Eiko
IPC分类号： H04L1/18 , H04L27/34
CPC分类号： H04L1/1816 , H04L1/0003 , H04L1/1812 , H04L1/1819 , H04L27/34 , H04L27/3472

10. 发明授权

EP1050127B1 METHOD AND APPARATUS FOR SYNCHRONIZING A DATA COMMUNICATION SYSTEM TO A PERIODIC DIGITAL IMPAIRMENT 有权
标题翻译：方法和设备，用于同步数据电信系统与周期性数字干扰
公开(公告)号：EP1050127B1
公开(公告)日：2004-09-08
申请号：EP99902328.6
申请日：1999-01-19
申请人： Conexant Systems, Inc.
发明人： OLAFSSON, Sverrir
IPC分类号： H04J3/12 , H04L25/49 , H04L27/34
CPC分类号： H04L25/4927 , H04J3/125 , H04L27/3472
摘要： A pulse code modulation modem system is configured to transmit data from a first modem to a second modem over the public switched telephone network (PSTN). The PSTN employs robbed bit signaling (RBS) such that symbols affected by RBS arrive at the second modem in a periodic manner based on a period of six symbols. The modem system is configured such that signal segments are formatted and transmitted with six symbols per segment. After obtaining symbol synchronization, the second modem initializes a modulo-6 symbol counter such that the zero count corresponds to the first symbol of each received signal segment. Those symbols affected by RBS are identified and analyzed to determine optimized signal point constellations that may be used to compensate for the RBS on a symbol-by-symbol basis during subsequent encoding and decoding. Upon a loss of synchronization, the second modem resets its modulo-6 counter in response to the detection of the first symbol in a subsequent signal segment. In this manner, the modem system can again use the optimized signal point constellations determined previously.

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