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1. 发明公开

EP2786541A1 METRIC CORRECTIONS FOR DEMODULATORS USING SERIAL LOCALIZATION WITH INDECISION 有权转让
标题翻译：度量的结合与优柔寡断串行本地化DEMODULATOR修正
公开(公告)号：EP2786541A1
公开(公告)日：2014-10-08
申请号：EP12813111.7
申请日：2012-11-19
申请人： Telefonaktiebolaget LM Ericsson (Publ)
发明人： KHAYRALLAH, Ali , HUI, Dennis
IPC分类号： H04L25/03 , H04L27/38 , H04L27/34
CPC分类号： H04L25/03229 , H04L25/03012 , H04L25/0328 , H04L25/03305 , H04L27/3416 , H04L27/38 , H04L2025/0342 , H04L2025/03426
摘要： Demodulation methods and apparatus for a multi-stage SLI demodulator are disclosed. Residual signals from each demodulation stage are modeled as finite sets of unresolved signals and a new metric is introduced for use in search of best candidate symbol estimates. The metric may be evaluated based on a probability distribution function of the residual signals or a probability mass function of the unresolved signals. The metric may also be approximated by the sum of a conventional Euclidean metric and a correction metric. The best candidate symbol estimates generated from each stage of the multi-stage SLI demodulator are summed to form cumulative symbol estimates.

2. 发明公开

EP3178185A1 MULTIPLE DESCRIPTION MEDIA BROADCAST AIDED BY A SECONDARY BASE STATION 审中-公开
标题翻译：由二级基站辅助的多媒体广播
公开(公告)号：EP3178185A1
公开(公告)日：2017-06-14
申请号：EP15774685.0
申请日：2015-07-28
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： KHAYRALLAH, Ali
IPC分类号： H04L1/00 , H04B7/155 , H04N19/39
CPC分类号： H04L5/0057 , H04B7/15528 , H04L1/0003 , H04L1/0009 , H04L2001/0097 , H04N19/39 , H04W40/244 , H04W72/0413 , H04W72/085
摘要： According to some embodiments, a secondary network node detects a first data transmission of media content from a primary network node to a first wireless device. The first data transmission has a first data quality description D(n1) and a first transport format T(k1). The secondary network node selects a second data quality description D(n2′) and a second transport format T(k2′) for a second data transmission. The second data quality description D(n2′) and second transport format T(k2′) differ from the first data quality description D(1) and first transport format T(k1), respectively. The secondary network node transmits the second data transmission to a second wireless device according to the second data quality description D(n2′) and the second transport format T(k2′). The second data transmission includes at least a portion of the media content.
摘要翻译：根据一些实施例，辅网络节点检测媒体内容从主网络节点到第一无线设备的第一数据传输。第一数据传输具有第一数据质量描述D（n1）和第一传输格式T（k1）。次网络节点为第二数据传输选择第二数据质量描述D（n2'）和第二传输格式T（k2'）。第二数据质量描述D（n2'）和第二传输格式T（k2'）分别不同于第一数据质量描述D（1）和第一传输格式T（k1）。次网络节点根据第二数据质量描述D（n2'）和第二传输格式T（k2'）将第二数据传输发送到第二无线设备。第二数据传输包括媒体内容的至少一部分。

3. 发明公开

EP2832063A2 ENHANCED METRICS FOR DEMODULATION AND SOFT INFORMATION GENERATION IN THE PRESENCE OF A NON-CONSTANT ENVELOPE MODULATED INTERFERER 失效转让
标题翻译：解调和生产数据用柔软的不恒定包络改进度量调制干扰元素
公开(公告)号：EP2832063A2
公开(公告)日：2015-02-04
申请号：EP13722096.8
申请日：2013-03-27
申请人： Telefonaktiebolaget LM Ericsson (Publ)
发明人： HUI, Dennis , KHAYRALLAH, Ali
IPC分类号： H04L25/06 , H04L27/26 , H04L27/38
CPC分类号： H04L27/38 , H04L25/067 , H04L27/2647
摘要： Systems and methods utilize enhanced metrics for demodulation and/or soft bit information generation in the presence of a non-constant envelope modulated interfering signal. In one embodiment, a receiver includes a downconverter and a demodulator. The downconverter receives a radio frequency signal comprising a desired signal, noise, and a non-constant envelope modulated interfering signal, and downconverts the radio frequency signal to provide a downconverted signal. The demodulator demodulates the downconverted signal based on a demodulation metric that models the non-constant envelope modulated interfering signal as a stationary non-Gaussian random process with a probability distribution derived from a modulation constellation of a modulation used for the non-constant envelope modulated interfering signal. In one embodiment, the demodulator outputs demodulated symbols. In another embodiment, the demodulator outputs soft bit information.

4. 发明授权

EP2786541B1 METRIC CORRECTIONS FOR DEMODULATORS USING SERIAL LOCALIZATION WITH INDECISION 有权转让
标题翻译：度量的结合与优柔寡断串行本地化DEMODULATOR修正
公开(公告)号：EP2786541B1
公开(公告)日：2016-02-24
申请号：EP12813111.7
申请日：2012-11-19
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： KHAYRALLAH, Ali , HUI, Dennis
IPC分类号： H04L25/03 , H04L27/38 , H04L27/34
CPC分类号： H04L25/03229 , H04L25/03012 , H04L25/0328 , H04L25/03305 , H04L27/3416 , H04L27/38 , H04L2025/0342 , H04L2025/03426

5. 发明公开

EP1886413A1 A METHOD AND APPARATUS FOR SCALING PARAMETER ESTIMATION IN PARAMETRIC GENERALIZED RAKE RECEIVERS 审中-公开
标题翻译：方法和设备缩放参数估计含参广义RAKE接收机
公开(公告)号：EP1886413A1
公开(公告)日：2008-02-13
申请号：EP05779032.1
申请日：2005-09-05
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
发明人： COZZO, Carmela , CAIRNS, Douglas , BOTTOMLEY, Gregory, E. , KHAYRALLAH, Ali , ERIKSSON, Hakan, B.
IPC分类号： H04B1/707 , H04L27/00 , H04L25/02
CPC分类号： H04B1/7103 , H04B1/712 , H04B2201/709727 , H04L25/0212 , H04L25/0222 , H04L25/0228
摘要： A wireless communication receiver, such as the receiver included in a wireless communication transceiver implemented in a base station or in a mobile station of a wireless communication network, includes a parametric G-RAKE receiver circuit and a method that compute parametric scaling parameters on a per transmission interval basis. In one embodiment, measured impairment correlations are obtained for an individual transmission slot and used to estimate instantaneous values of the scaling parameters. One or both of those instantaneous values are then constrained according to one or more defined limits. In other embodiments, multiple transmission slots are used to increase the number of measurements available to estimate the scaling parameters, with parameter constraining optionally applied. Further embodiments use iterative methods and/or solve for one parameter, and use the results to obtain the other parameter(s). One or more of these embodiments can be improved through the use of error correction/detection information.

6. 发明公开

EP1878120A2 RECEIVER FOR A MULTI-ANTENNA, MULTI-BAND RADIO 审中-公开
标题翻译：接收器与多个天线和多个频段。RADIO
公开(公告)号：EP1878120A2
公开(公告)日：2008-01-16
申请号：EP06733455.7
申请日：2006-04-26
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
发明人： KHAYRALLAH, Ali , CROUGHWELL, William
IPC分类号： H04B1/00 , H04B7/08
CPC分类号： H04B1/16 , H04B1/0064 , H04B1/0067
摘要： A front-end architecture and processing method for a receiver in a multi-antenna, multi-band radio. Band-dependent components for multiple frequency bands are not duplicated in each receive chain. In one embodiment, a first receive chain includes band-dependent components for the first frequency band only. A second receive chain includes band-dependent components for the second frequency band only. The receive chains may be dedicated to particular antennas, or a switch may be utilized to route signals from different antennas to the different band-dependent components. Each receive chain may include band-independent components, or a single set of band-independent components may be utilized for the different receive chains by multiplexing the output of the band-dependent component sections.

7. 发明授权

EP1382149B1 SOFT OUTPUT VALUE BIASING METHOD 有权
标题翻译：偏置方法软输出VALUE
公开(公告)号：EP1382149B1
公开(公告)日：2006-08-16
申请号：EP02736599.8
申请日：2002-04-24
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
发明人： KHAYRALLAH, Ali , FULGHUM, Tracy
IPC分类号： H04L1/00
CPC分类号： H03M13/4146 , H03M13/09 , H03M13/3738 , H03M13/3776 , H03M13/612 , H03M13/658 , H04L1/0054
摘要： Biasing soft output values based on a known or learned bit error rate function yields performance improvements in decoding algorithms adapted to work with soft values, such as soft output Viterbi algorithms (SOVA). For example, in a wireless receiver, the soft output values output from a signal demodulator may be biased to reflect the changes in bit error rate across a given burst or block of data. Such changes might arise, for example, due to increasing inaccuracies in the receiver's channel estimate, which is typically computed at the beginning or middle of a block of received data. The wireless receiver may store a table of scaling factors corresponding to the expected bit error rate distribution of the received signal. The table may be preloaded into the receiver, or may be determined during operation. In either case, the table may be updated during operation to reflect bit error incidence observed during operation.

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