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1. 发明申请

WO2014029425A1 SOFT METRICS COMPRESSING METHOD 审中-公开
标题翻译：软质量压缩方法
公开(公告)号：WO2014029425A1
公开(公告)日：2014-02-27
申请号：PCT/EP2012066286
申请日：2012-08-21
申请人： ABILIS SYSTEMS SARL , BUTUSSI MATTEO , TOMASIN STEFANO , ROSATI STEFANO
发明人： BUTUSSI MATTEO , TOMASIN STEFANO , ROSATI STEFANO
IPC分类号： H04L25/06 , H03M7/40 , H03M13/27 , H03M13/45 , H04L1/00
CPC分类号： H04L27/2649 , H03M7/30 , H03M7/40 , H03M13/27 , H03M13/2792 , H03M13/45 , H03M13/6312 , H03M13/6505 , H03M13/6577 , H03M13/6588 , H04L1/0036 , H04L1/0045 , H04L1/0071 , H04L25/067
摘要： A signal method of processing in a receiver a signal that has been encoded and interleaved in a transmitter comprising: receiving a signal, process the signal to obtain a stream of soft metrics representing bit probability of symbols in a predetermined constellation; applying to said soft metric a compression operation that preserves the total length of each group of soft metrics relative to a same constellation symbol; rearranging the stream of compressed soft metrics so as to inverse the interleaving done in the transmitter.
摘要翻译：一种在接收机中处理已经在发射机中编码和交织的信号的信号方法，包括：接收信号，处理所述信号以获得表示预定星座中符号的比特概率的软度量流; 向所述软度量应用压缩操作，其保存相对于相同星座符号的每组软度量的总长度; 重新排列压缩软度量流，以便逆变换器中完成的交织。

2. 发明申请

WO2010081896A3 INTERPOLATED CHANNEL ESTIMATION FOR MOBILE OFDM SYSTEMS 审中-公开
标题翻译：用于移动OFDM系统的内插信道估计
公开(公告)号：WO2010081896A3
公开(公告)日：2010-12-02
申请号：PCT/EP2010050498
申请日：2010-01-18
申请人： ABILIS SYSTEMS SARL , BUTUSSI MATTEO , TOMASIN STEFANO
发明人： BUTUSSI MATTEO , TOMASIN STEFANO
IPC分类号： H04L25/02 , H04L27/26
CPC分类号： H04L25/0232 , H04L27/2647
摘要： In an OFDM system using pilot cells for channel estimation, time interpolation among pilot cells of different OFDM symbols is commonly used to improve the estimate. The estimated channel impulse response is also windowed to further reduce noise and disturbances. However, for a transmission over a time-varying channel, suboptimal time interpolation, implemented with a filter having only a few taps not matched to the maximum Doppler frequency, degrades channel estimation. As aliases can lead to an erroneous estimate of channel duration and consequent errors in windowing, the present invention implements a technique to detect aliases and correct the estimate of channel duration. Parameters of the detection techniques are optimized by an analysis that provides closed-form expressions of the false alarm and miss detection probabilities.
摘要翻译：在使用导频小区进行信道估计的OFDM系统中，通常使用不同OFDM符号的导频小区之间的时间内插来改善估计。估计的信道脉冲响应也被窗口化以进一步减少噪声和干扰。然而，对于通过时变信道的传输，用仅具有与最大多普勒频率不匹配的几个抽头的滤波器实现的次优时间插值降低了信道估计。由于别名可能导致频道持续时间的错误估计和随之而来的窗口错误，本发明实现了检测别名并纠正频道持续时间估计的技术。通过分析提供检测技术的参数，该分析提供虚警和封闭检测概率的闭合表达式。

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