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1. 发明申请

US20100074349A1 METHOD AND BASE STATION FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SIGNAL PROCESSING 有权
标题翻译：正交频分多址（OFDM）信号处理的方法和基站
公开(公告)号：US20100074349A1
公开(公告)日：2010-03-25
申请号：US12325501
申请日：2008-12-01
申请人： Thord Hyllander , Leondard Rexberg , Jacob Osterling , Vimar Bjork , Tore Mikael Andre , Torbjorn Gunnar Widhe , Daniel Larsson
发明人： Thord Hyllander , Leondard Rexberg , Jacob Osterling , Vimar Bjork , Tore Mikael Andre , Torbjorn Gunnar Widhe , Daniel Larsson
IPC分类号： H04L27/28
CPC分类号： H04L27/2647 , H04L27/2602 , H04L27/2626
摘要： A method and base station for forming an OFDM signal from a baseband signal includes a partitioning unit configured to partition a block of baseband signal samples into sub-blocks. A sub-carrier mapper maps the sub-blocks onto adjacent sub-carrier blocks of an OFDM multi-carrier to form corresponding unprefixed OFDM symbols. A cyclic prefix adder adds a cyclic prefix to each mapped sub-block to form prefixed OFDM symbols. Phase compensations force the unprefixed OFDM symbol part of all subsequently up-converted prefixed OFDM symbols to start at the same phase. Up-converters up-convert the phase compensated prefixed OFDM symbols to respective radio frequency bands having center frequencies and bandwidths that preserve the OFDM multi-carrier structure. A combiner combines the up-converted phase compensated prefixed OFDM symbols into an OFDM signal.
摘要翻译：用于从基带信号形成OFDM信号的方法和基站包括：分配单元，被配置为将基带信号样本块分割成子块。子载波映射器将子块映射到OFDM多载波的相邻子载波块，以形成对应的未经修正的OFDM符号。循环前缀加法器向每个映射子块添加循环前缀以形成前缀OFDM符号。相位补偿迫使所有随后上变频的前缀OFDM符号的未经修正的OFDM符号部分在同一相位开始。上变频器将相位补偿的前缀OFDM符号上变频到具有保留OFDM多载波结构的中心频率和带宽的各个无线电频带。组合器将上变频相位补偿的前缀OFDM符号组合成OFDM信号。

2. 发明申请

US20090225787A1 Generation of Clock Signal From Received Packet Stream 有权
标题翻译：从接收到的数据包流生成时钟信号
公开(公告)号：US20090225787A1
公开(公告)日：2009-09-10
申请号：US12093372
申请日：2005-11-14
申请人： Tore Mikael Andre
发明人： Tore Mikael Andre
IPC分类号： H04J3/06
CPC分类号： H04J3/0658
摘要： A receiving unit receiving packets of a packet stream having an evaluating unit for comparing the arrival times of the packets to a generated clock signal. The generated clock signal is used in transmitting information carried in the packets from the receiving unit. From the delays, a signal producing unit determines a characteristic delay value, which is characteristic of or typical of the statistical distribution of the delays. This characteristic delay value may be an average of the smallest delays of the distribution of delays for the latest received packets, and is used for adjusting the frequency of the generated clock signal. The average may be calculated or derived from all of the smallest delays of the distribution obtained for a predetermined share of the latest received packets.
摘要翻译：接收单元接收具有评估单元的分组流的分组，用于将分组的到达时间与生成的时钟信号进行比较。生成的时钟信号用于发送来自接收单元的分组中携带的信息。信号产生单元根据延迟确定作为延迟的统计分布的特征或典型的特征延迟值。该特征延迟值可以是最近接收到的分组的延迟分布的最小延迟的平均值，并且用于调整所生成的时钟信号的频率。平均值可以从针对最新接收的分组的预定份额获得的分布的所有最小延迟中计算或导出。

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