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1. 发明申请

WO2007068438A2 CIRCULAR FAST FOURIER TRANSFORM 审中-公开
标题翻译：圆形快速傅立叶变换
公开(公告)号：WO2007068438A2
公开(公告)日：2007-06-21
申请号：PCT/EP2006/011935
申请日：2006-12-12
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , WILHELMSSON, Leif , SVENSSON, Jim , BERKEMAN, Anders
发明人： WILHELMSSON, Leif , SVENSSON, Jim , BERKEMAN, Anders
IPC分类号： G06F17/14
CPC分类号： G06F17/142 , H04L27/265 , H04L27/2662
摘要： A DIF 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 N/ 2 . The DIF FFT stage further includes a summing unit for adding values supplied by the first and second swap logic output ports; a differencing unit for subtracting values supplied by the first and second swap logic output ports; and twiddle factor logic that multiplies a value supplied by the differencing unit by a twiddle factor, W N (v + s)mod( N /2) , where s is an integer representing an amount of circular shift of N input samples.
摘要翻译：在N bin FFT中使用DIF 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 = v

2. 发明申请

WO2005045662A1 SPLIT MULTIPLICATION 审中-公开
标题翻译：分割多项式
公开(公告)号：WO2005045662A1
公开(公告)日：2005-05-19
申请号：PCT/EP2004/012366
申请日：2004-11-02
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , BERKEMAN, Anders
发明人： BERKEMAN, Anders
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 or 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 number 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 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第二组或一个或多个W位宽数字，将第一数字乘以第二数字。来自第一组的每个W位宽的数字与来自第二组的每个W位宽的数字配对。对于每对W位宽的数字，生成一组子部分乘积。形成子部分产品的组合，使得每个组合可以由W位宽的较低部分乘积表示，并且执行项被组合以形成第一数量和第二数量的乘积。进位项有利地由（W / 2）+1位表示。

3. 发明申请

WO2005091509A1 ADDRESS GENERATOR FOR AN INTERLEAVER MEMORY AND A DEINTERLEAVER MEMORY 审中-公开
标题翻译：地址发生器用于交互式存储器和消除器存储器
公开(公告)号：WO2005091509A1
公开(公告)日：2005-09-29
申请号：PCT/EP2005/002221
申请日：2005-03-03
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , BERKEMAN, Anders
发明人： BERKEMAN, Anders
IPC分类号： H03M13/27
CPC分类号： H03M13/2764 , H03M13/271 , H03M13/2742 , H03M13/275 , H03M13/276
摘要： Method and device for generating an address value for addressing an interleaver memory. Consecutive address fragments to which a most significant bit(s) is to be appended are generated. Only a fraction of the address fragments generated, which potentially will exceed a maximum allowable value, is compared to the maximum allowable value. If the compared address fragment exceeds the maximum allowable value it is discarded. If the compared address fragment does not exceed the maximum allowable value it is accepted.
摘要翻译：用于产生用于寻址交织器存储器的地址值的方法和装置。生成要附加最高有效位的连续地址片段。生成的地址片段的一部分，潜在地将超过最大允许值，与最大允许值进行比较。如果比较的地址片段超过最大允许值，则它被丢弃。如果比较的地址片段不超过最大允许值，则被接受。

4. 发明申请

WO2006111275A2 INITIAL PARAMETER ESTIMATION IN OFDM SYSTEMS 审中-公开
标题翻译： OFDM系统中的初始参数估计
公开(公告)号：WO2006111275A2
公开(公告)日：2006-10-26
申请号：PCT/EP2006/003173
申请日：2006-04-07
申请人： TELEFONAKTIEBOLAGET LM ERICSSON , BERKEMAN, Anders , SVENSSON, Jim , WILHELMSSON, Leif
发明人： BERKEMAN, Anders , SVENSSON, Jim , WILHELMSSON, Leif
IPC分类号： H04L27/26 , H04L1/20
CPC分类号： H04L25/0232 , H04L25/0216 , H04L25/022 , H04L25/0234 , H04L27/2647 , H04L27/2665
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：产生在电信系统中的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。

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