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1. 发明授权

US09031145B1 Low complexity technique for log-likelihood ratio computation 有权
标题翻译：对数似然比计算的低复杂度技术
公开(公告)号：US09031145B1
公开(公告)日：2015-05-12
申请号：US14291473
申请日：2014-05-30
申请人： Marvell International Ltd.
发明人： Arul Durai Murugan Palanivelu , Leilei Song , Rohit U. Nabar , Jungwon Lee , Sayandev Mukherjee , Hui-Ling Lou
IPC分类号： H04L23/02 , H04L5/12 , H04B7/04
CPC分类号： H04B7/0413 , H04L25/03242 , H04L25/03961 , H04L25/067 , H04L2025/03414 , H04L2025/0342
摘要： Systems and methods for detecting data in a multiple input/multiple output signal. The method includes receiving a first signal associated with a first data value and a second signal associated with a second data value. A distance value between the received second signal and each possible second data value is calculated. Coordinates for a hypothetical first signal in light of a first possible second data value are calculated, and the first coordinate value is quantized to a nearest constellation point. A distance value between the received second signal and each possible second data value is calculated using the calculated constellation points. A determination is made of a log-likelihood ratio based on the determined distance values.
摘要翻译：用于检测多输入/多输出信号中的数据的系统和方法。该方法包括接收与第一数据值相关联的第一信号和与第二数据值相关联的第二信号。计算接收到的第二信号与每个可能的第二数据值之间的距离值。计算出根据第一可能的第二数据值的假设第一信号的坐标，并且将第一坐标值量化到最接近的星座点。使用所计算的星座点来计算所接收的第二信号与每个可能的第二数据值之间的距离值。基于确定的距离值来确定对数似然比。

2. 发明授权

US08861658B1 Signal power estimation for cellular OFDM systems 有权
标题翻译：蜂窝OFDM系统的信号功率估计
公开(公告)号：US08861658B1
公开(公告)日：2014-10-14
申请号：US13762046
申请日：2013-02-07
申请人： Marvell International Ltd.
发明人： Jungwon Lee , Sayandev Mukherjee , Adina Matache
IPC分类号： H03D1/00 , H04W24/00
CPC分类号： H04W24/00 , H04B7/10 , H04B17/327 , H04L27/2601
摘要： Signal power of a received signal, which has a plurality of preamble sequences associated with sub-carrier signals received from a plurality of sub-carriers, in a cellular Orthogonal Frequency Division Multiplexing system may be estimated by estimating as power for at least one preamble sequence of a signal received at a selected receive antenna. The preamble sequence is associated with a base station and a set of sub-carriers. A differential received signal developed for one of the set of sub-carriers is correlated with a normalized differential transmit signal for the preamble sequence, and the estimate of the power for the at least one preamble sequence is extracted based on the correlation.
摘要翻译：在蜂窝正交频分复用系统中，具有与从多个子载波接收的子载波信号相关联的多个前导码序列的接收信号的信号功率可以通过估计作为至少一个前同步码序列的功率来估计在选定的接收天线处接收的信号。前导序列与基站和一组子载波相关联。对于一组子载波中的一个发展的差分接收信号与用于前导码序列的归一化差分发送信号相关，并且基于相关性提取至少一个前导序列的功率估计。

3. 发明授权

US08774301B1 Low complexity technique for log-likelihood ratio computation 有权
标题翻译：对数似然比计算的低复杂度技术
公开(公告)号：US08774301B1
公开(公告)日：2014-07-08
申请号：US13672141
申请日：2012-11-08
申请人： Marvell International Ltd.
发明人： Arul Durai Murugan Palanivelu , Leilei Song , Rohit U. Nabar , Jungwon Lee , Sayandev Mukherjee , Hui-Ling Lou
IPC分类号： H04L23/02
CPC分类号： H04B7/0413 , H04L25/03242 , H04L25/03961 , H04L25/067 , H04L2025/03414 , H04L2025/0342
摘要： Systems and methods for detecting data in a multiple input/multiple output signal. The method includes receiving a first signal associated with a first data value and a second signal associated with a second data value. A distance value between the received second signal and each possible second data value is calculated. Coordinates for a hypothetical first signal in light of a first possible second data value are calculated, and the first coordinate value is quantized to a nearest constellation point. A distance value between the received second signal and each possible second data value is calculated using the calculated constellation points. A determination is made of a log-likelihood ratio based on the determined distance values.
摘要翻译：用于检测多输入/多输出信号中的数据的系统和方法。该方法包括接收与第一数据值相关联的第一信号和与第二数据值相关联的第二信号。计算接收到的第二信号与每个可能的第二数据值之间的距离值。计算出根据第一可能的第二数据值的假设第一信号的坐标，并且将第一坐标值量化到最接近的星座点。使用所计算的星座点来计算所接收的第二信号与每个可能的第二数据值之间的距离值。基于确定的距离值来确定对数似然比。

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