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1. 发明授权

US08378861B2 Storage of probability values for contexts used in arithmetic coding 有权
标题翻译：存储算术编码中使用的上下文的概率值
公开(公告)号：US08378861B2
公开(公告)日：2013-02-19
申请号：US12926601
申请日：2010-11-29
申请人： Anders Berkeman , Dominic Hugo Symes
发明人： Anders Berkeman , Dominic Hugo Symes
IPC分类号： H03M7/00
CPC分类号： H03M7/4018
摘要： Arithmetic coding utilizes probability values associated with contexts and context indexed values. The probability values are stored within a random access memory 6 from where they are fetched to a cache memory 8 before being supplied to an arithmetic encoder and decoder 4. The context indexed values used are mapped to the plurality of contexts employed such that context indexed values used to process data values close by in a position within the stream of data values being processed have a greater statistical likelihood of sharing a group of contexts than context values used to process data values far away in position within the stream of data values. Thus, a group of contexts for which the probability values are fetched together into the cache memory 8 will have an increased statistical likelihood of being used together in close proximity in processing the stream of data values. This reduces the number of cache flush operations and cache line fill operations.
摘要翻译：算术编码利用与上下文和上下文索引值相关联的概率值。概率值被存储在随机存取存储器6中，从它们被提取到高速缓冲存储器8之前被提供给算术编码器和解码器4.所使用的上下文索引值被映射到所使用的多个上下文，使得上下文索引值用于处理在被处理的数据值的流中的位置附近的数据值具有与用于处理在数据值流内远离位置的数据值的上下文值共享一组上下文的更大的统计学可能性。因此，将概率值一起提取到高速缓存存储器8中的一组上下文将具有在处理数据值流时紧密一起使用的增加的统计似然性。这减少了高速缓存刷新操作和高速缓存行填充操作的数量。

2. 发明申请

US20050102344A1 Split radix multiplication 有权
标题翻译：拆分基数乘法
公开(公告)号：US20050102344A1
公开(公告)日：2005-05-12
申请号：US10701634
申请日：2003-11-06
申请人： Anders Berkeman
发明人： Anders Berkeman
IPC分类号： G06F7/52 , G06F7/72
CPC分类号： G06F7/5324 , G06F7/728
摘要： A first number is multiplied by a second number, by representing the first number as a first set of one or more W-bit wide numbers, and representing the second number as a second set of one or more W-bit wide numbers. Each of the W-bit wide numbers from the first set is paired with each of the W-bit wide numbers from the second set. For each pair of W-bit wide numbers, a set of sub-partial products is generated. Combinations of the sub-partial products are formed such that each combination is representable by a W-bit wide lower partial product and a carry out term that has fewer than W bits. The W-bit wide lower partial products and the carry out terms are combined to form the product of the first number and the second number. The carry out term is advantageously representable by (W/2)+1 bits.
摘要翻译：通过将第一数字表示为一个或多个W位宽数字的第一组，并将第二数字表示为一个或多个W位宽数字的第二组，将第一数字乘以第二数字。来自第一组的每个W位宽数字与来自第二组的每个W位宽数字配对。对于每对W位宽的数字，产生一组子部分乘积。形成子部分产物的组合，使得每个组合可以由W位宽的较低部分积和少于W位的进位项表示。将W位宽的较低部分乘积和进位项组合起来形成第一个数和第二个数的乘积。进位项有利地由（W / 2）+1位表示。

3. 发明申请

US20110070858A1 IMAGE REJECTION 有权
标题翻译：图像拒绝
公开(公告)号：US20110070858A1
公开(公告)日：2011-03-24
申请号：US12874655
申请日：2010-09-02
申请人： Shousheng HE , Anders Berkeman
发明人： Shousheng HE , Anders Berkeman
IPC分类号： H04B1/10
CPC分类号： H04B1/123 , H04B1/28 , H04B2001/1045
摘要： A receiver (10) for extracting a desired signal component (70) from a received signal, which received signal contains the desired signal component (70) and may contain an interfering signal component (72), wherein the receiver (10) comprises a first mixer (16) which generates an intermediate frequency signal containing a frequency-shifted version of the received signal and a frequency-shifted version of an image of the received signal, the receiver further comprising: a second mixer (26) for shifting the desired signal component (70) of the intermediate frequency signal such that it is centred on a baseband frequency, so as to generate a first composite signal containing the shifted desired signal component (70) and a shifted version of any interfering signal component (76) contained in the image of the received signal; a third mixer (30) for shifting an image of the desired signal such that it is centred on the baseband frequency, so as to generate a second composite signal containing the shifted image (74) of the desired signal component and a shifted version (72) of any interfering signal component contained in the received signal; an estimator (34) for estimating, from the first and second composite signals, a coefficient indicative of the amount of the interfering signal (72) component that is present with the desired signal component (70) in a selected one of the composite signals; a multiplier (36) for scaling the complex conjugate of the selected composite signal by the coefficient so estimated; and an adder (38) for subtracting the scaled signal output by the multiplier (36) from the other composite signal to obtain a scaled version of the desired signal component
摘要翻译：一种用于从接收信号中提取所需信号分量（70）的接收机（10），该接收信号包含所需信号分量（70）并且可以包含干扰信号分量（72），其中接收器（10）包括第一混合器（16），其产生包含所述接收信号的频移版本的中频信号和所述接收信号的图像的频移版本，所述接收机还包括：第二混频器（26），用于将所述期望信号中间频率信号的分量（70），使得其以基带频率为中心，以便产生包含移位的期望信号分量（70）的第一复合信号和包含在其中的任何干扰信号分量（76）的偏移版本接收信号的图像; 第三混合器（30），用于移位期望信号的图像，使得其以基带频率为中心，以便产生包含期望信号分量和移位版本的移位图像（74）的第二复合信号（72 ）包含在接收信号中的任何干扰信号分量; 估计器（34），用于从所述第一和第二复合信号中估计所述复合信号中所选择的一个中与所述期望信号分量（70）存在的干扰信号（72）分量的量的系数; 乘法器（36），用于将所选择的复合信号的复共轭缩放所估计的系数; 以及加法器（38），用于从所述另一个复合信号中减去所述乘法器（36）输出的所述缩放信号，以获得所需信号分量的缩放版本

4. 发明申请

US20100093296A1 DOWNCONVERSION STRATEGIES FOR REDUCING INTERFERENCE IN WANTED SIGNALS 有权
标题翻译：用于减少所需信号干扰的眩晕策略
公开(公告)号：US20100093296A1
公开(公告)日：2010-04-15
申请号：US12470765
申请日：2009-05-22
申请人： Anders Berkeman , Shousheng He
发明人： Anders Berkeman , Shousheng He
IPC分类号： H04B1/18 , H04B1/10
CPC分类号： H04B1/1036
摘要： A receiver for isolating a wanted signal in a received signal, the receiver comprising a downconverter for downconverting the received signal in frequency to produce a downconverted signal, a filter with a passband intended for isolating that part of the spectrum of the downconverted signal that contains the wanted signal and a controller that seeks to avoid or reduce the effect of passband intrusion in the form of a negative frequency representation of an interferer, appearing in the spectrum of the received signal, upconverted in frequency to the passband. The invention consists in corresponding methods also.
摘要翻译：一种用于隔离接收信号中有用信号的接收机，该接收机包括一个下变频器，用于频率下变频接收的信号以产生下变频信号，滤波器具有用于隔离下变频信号的频谱部分，所需信号和控制器试图避免或减少出现在频率上升到通带的接收信号的频谱中的干扰源的负频率表示形式的通带入侵的影响。本发明还涉及相应的方法。

5. 发明申请

US20120133533A1 Storage of probability values for contexts used in arithmetic coding 有权
标题翻译：存储算术编码中使用的上下文的概率值
公开(公告)号：US20120133533A1
公开(公告)日：2012-05-31
申请号：US12926601
申请日：2010-11-29
申请人： Anders Berkeman , Dominic Hugo Symes
发明人： Anders Berkeman , Dominic Hugo Symes
IPC分类号： H03M7/00
CPC分类号： H03M7/4018
摘要： Arithmetic coding utilises probability values associated with contexts and context indexed values. The probability values are stored within a random access memory 6 from where they are fetched to a cache memory 8 before being supplied to an arithmetic encoder and decoder 4. The context indexed values used are mapped to the plurality of contexts employed such that context indexed values used to process data values close by in a position within the stream of data values being processed have a greater statistical likelihood of sharing a group of contexts than context values used to process data values far away in position within the stream of data values. Thus, a group of contexts for which the probability values are fetched together into the cache memory 8 will have an increased statistical likelihood of being used together in close proximity in processing the stream of data values. This reduces the number of cache flush operations and cache line fill operations.
摘要翻译：算术编码利用与上下文和上下文索引值相关联的概率值。概率值被存储在随机存取存储器6中，从它们被提取到高速缓冲存储器8之前被提供给算术编码器和解码器4.所使用的上下文索引值被映射到所使用的多个上下文，使得上下文索引值用于处理在被处理的数据值的流中的位置附近的数据值具有与用于处理在数据值流内远离位置的数据值的上下文值共享一组上下文的更大的统计学可能性。因此，将概率值一起提取到高速缓存存储器8中的一组上下文将具有在处理数据值流时紧密一起使用的增加的统计似然性。这减少了高速缓存刷新操作和高速缓存行填充操作的数量。

6. 发明授权

US07602852B2 Initial parameter estimation in OFDM systems 有权
标题翻译： OFDM系统中的初始参数估计
公开(公告)号：US07602852B2
公开(公告)日：2009-10-13
申请号：US11110840
申请日：2005-04-21
申请人： Anders Berkeman , Jim Svensson , Leif Wilhelmsson
发明人： Anders Berkeman , Jim Svensson , Leif Wilhelmsson
IPC分类号： H04L27/28
CPC分类号： H04L27/2657 , H04L27/2607 , H04L27/2662 , H04L27/2678
摘要： A coarse estimate of a location of an information carrying part of a symbol in a received signal in a telecommunication system is generated. This involves generating correlation values by correlating the received signal with a delayed received signal. A maximum correlation value of the correlation values is identified, and a duration in time during which the correlation values are greater than or equal to a predetermined percentage of the maximum correlation value is identified, wherein the duration in time begins at a first moment in time and ends at a second moment in time. The coarse estimate of the location of the peak correlation value is set equal to a moment in time between the first moment in time and the second moment in time, for example, a midpoint between the first moment in time and the second moment in time.
摘要翻译：产生在电信系统中接收信号中承载符号部分的信息的位置的粗略估计。这涉及通过将接收的信号与延迟的接收信号相关来产生相关值。识别相关值的最大相关值，并且识别相关值大于或等于最大相关值的预定百分比的时间持续时间，其中时间持续时间从第一时刻开始并在第二时刻结束。将峰值相关值的位置的粗略估计设置为等于第一时刻与第二时刻之间的时刻，例如，第一时刻与第二时刻之间的中点。

7. 发明申请

US20060239179A1 Initial parameter estimation in OFDM systems 有权
公开(公告)号：US20060239179A1
公开(公告)日：2006-10-26
申请号：US11110840
申请日：2005-04-21
申请人： Anders Berkeman , Jim Svensson , Leif Wilhelmsson
发明人： Anders Berkeman , Jim Svensson , Leif Wilhelmsson
IPC分类号： H04J11/00
CPC分类号： H04L27/2657 , H04L27/2607 , H04L27/2662 , H04L27/2678
摘要： A coarse estimate of a location of an information carrying part of a symbol in a received signal in a telecommunication system is generated. This involves generating correlation values by correlating the received signal with a delayed received signal. A maximum correlation value of the correlation values is identified, and a duration in time during which the correlation values are greater than or equal to a predetermined percentage of the maximum correlation value is identified, wherein the duration in time begins at a first moment in time and ends at a second moment in time. The coarse estimate of the location of the peak correlation value is set equal to a moment in time between the first moment in time and the second moment in time, for example, a midpoint between the first moment in time and the second moment in time.

8. 发明授权

US08099068B2 Downconversion strategies for reducing interference in wanted signals 有权
标题翻译：降低转换策略，减少有用信号的干扰
公开(公告)号：US08099068B2
公开(公告)日：2012-01-17
申请号：US12470765
申请日：2009-05-22
申请人： Anders Berkeman , Shousheng He
发明人： Anders Berkeman , Shousheng He
IPC分类号： H04B1/18
CPC分类号： H04B1/1036
摘要： A receiver for isolating a wanted signal in a received signal, the receiver comprising a downconverter for downconverting the received signal in frequency to produce a downconverted signal, a filter with a passband intended for isolating that part of the spectrum of the downconverted signal that contains the wanted signal and a controller that seeks to avoid or reduce the effect of passband intrusion in the form of a negative frequency representation of an interferer, appearing in the spectrum of the received signal, upconverted in frequency to the passband. The invention consists in corresponding methods also.
摘要翻译：一种用于隔离接收信号中有用信号的接收机，该接收机包括一个下变频器，用于频率下变频接收的信号以产生下变频信号，滤波器具有用于隔离下变频信号的频谱部分，所需信号和控制器试图避免或减少出现在频率上升到通带的接收信号的频谱中的干扰源的负频率表示形式的通带入侵的影响。本发明还涉及相应的方法。

9. 发明授权

US07685220B2 Circular fast fourier transform 失效
标题翻译：圆快速傅里叶变换
公开(公告)号：US07685220B2
公开(公告)日：2010-03-23
申请号：US11302243
申请日：2005-12-14
申请人： Anders Berkeman , Leif Wilhelmsson , Jim Svensson
发明人： Anders Berkeman , Leif Wilhelmsson , Jim Svensson
IPC分类号： G06F17/14
CPC分类号： G06F17/142 , H04L27/265 , H04L27/2662
摘要： A Decimation In Frequency (DIF) Fast Fourier Transform (FFT) stage is used in an N bin FFT, wherein N is an even integer. The DIF FFT stage includes swap logic that receives a first input sample, x(v), and a second input sample, x(v+N/2), and selectively supplies either the first and second input samples at respective first and second swap logic output ports or alternatively the second and first input samples at the respective first and second swap logic output ports, wherein 0≦v
摘要翻译：在N bin FFT中使用频率抽取（DIF）快速傅里叶变换（FFT）级，其中N是偶数整数。 DIF FFT级包括接收第一输入采样x（v）和第二输入采样x（v + N / 2）的交换逻辑，并且在相应的第一和第二交换处选择性地提供第一和第二输入采样逻辑输出端口或备选地在相应的第一和第二交换逻辑输出端口处的第二和第一输入采样，其中0＆nlE; v

10. 发明授权

US07318080B2 Split radix multiplication 有权
标题翻译：拆分基数乘法
公开(公告)号：US07318080B2
公开(公告)日：2008-01-08
申请号：US10701634
申请日：2003-11-06
申请人： Anders Berkeman
发明人： Anders Berkeman
IPC分类号： G06F7/52
CPC分类号： G06F7/5324 , G06F7/728
摘要： A first number is multiplied by a second number, by representing the first number as a first set of one or more W-bit wide numbers, and representing the second number as a second set of one or more W-bit wide numbers. Each of the W-bit wide numbers from the first set is paired with each of the W-bit wide numbers from the second set. For each pair of W-bit wide numbers, a set of sub-partial products is generated. Combinations of the sub-partial products are formed such that each combination is representable by a W-bit wide lower partial product and a carry out term that has fewer than W bits. The W-bit wide lower partial products and the carry out terms are combined to form the product of the first number and the second number. The carry out term is advantageously representable by (W/2)+1 bits.
摘要翻译：通过将第一数字表示为一个或多个W位宽数字的第一组，并将第二数字表示为一个或多个W位宽数字的第二组，将第一数字乘以第二数字。来自第一组的每个W位宽数字与来自第二组的每个W位宽数字配对。对于每对W位宽的数字，产生一组子部分乘积。形成子部分产物的组合，使得每个组合可以由W位宽的较低部分积和少于W位的进位项表示。将W位宽的较低部分乘积和进位项组合起来形成第一个数和第二个数的乘积。进位项有利地由（W / 2）+1位表示。

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