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    • 42. 发明申请
    • OFDM signal reception in the presence of interference
    • 在存在干扰的情况下进行OFDM信号接收
    • US20120051464A1
    • 2012-03-01
    • US12869816
    • 2010-08-27
    • Matthias KamufBengt LindoffSven MattissonFredrik Nordström
    • Matthias KamufBengt LindoffSven MattissonFredrik Nordström
    • H04L27/06H04L25/08
    • H04L27/2647H04L25/03292H04L25/03318H04L2025/03414
    • Decoding a received Orthogonal Frequency Division Multiplex (OFDM) signal that occupies a first set of subcarriers in a radio frequency spectrum includes ascertaining an interference model that represents interference occurring in the first set of subcarriers caused by a transmitted OFDM signal that occupies a second set of subcarriers in the radio frequency spectrum. A set of scaled soft values is produced that represents information conveyed by the received OFDM signal over the first set of subcarriers, wherein each scaled soft value in the set of scaled soft values corresponds to a respective one of the subcarriers in the first set of subcarriers, and wherein a scaling amount applied to each of the scaled soft values is based on a corresponding level of interference in said respective one of the subcarriers as indicated by the interference model. A decoding process is performed that generates detected data from the scaled soft values.
    • 解码在无线电频谱中占用第一组子载波的接收的正交频分多路复用(OFDM)信号包括确定干扰模型,其表示由发送的OFDM信号引起的第一组子载波中所发生的干扰,所述OFDM信号占用第二组 无线电频谱中的子载波。 产生一组缩放的软值,其表示在第一组子载波上由接收的OFDM信号传送的信息,其中该缩放的软值集合中的每个缩放的软值对应于第一组子载波中的相应的一个子载波 ,并且其中应用于每个所述缩放的软值的缩放量基于由所述干扰模型指示的所述相应一个子载波中的相应的干扰电平。 执行从缩放的软值生成检测数据的解码处理。
    • 43. 发明申请
    • Method and Arrangement of Delay Spread Compensation
    • 延迟传播补偿的方法和布置
    • US20120027048A1
    • 2012-02-02
    • US13145789
    • 2010-01-20
    • Bengt LindoffFredrik NordströmBo LincolnAnders Rosenqvist
    • Bengt LindoffFredrik NordströmBo LincolnAnders Rosenqvist
    • H04B1/707
    • H04L25/03006H04L25/0216H04L2025/03426
    • A method of delay spread compensation, suitable for use in a communication device a having plurality of receiver antennas, is disclosed. The method comprises receiving a plurality of signals, each via a respective antenna, wherein each signal comprises a signal component corresponding to a transmitted signal, and wherein each received signal experiences a respective channel impulse response having a corresponding delay spread; determining estimates of each of the channel impulse responses; calculating post-coding characteristics based on the estimates of the channel impulse responses; and post-coding the plurality of received signals using the post-coding characteristics to produce at least a first delay spread compensated signal. Corresponding computer program product, processing arrangement and communication device are also disclosed.
    • 公开了适用于具有多个接收机天线的通信设备中的延迟扩展补偿方法。 该方法包括:经由相应的天线接收多个信号,其中每个信号包括对应于发射信号的信号分量,并且其中每个接收信号经历具有相应延迟扩展的相应信道脉冲响应; 确定每个信道脉冲响应的估计; 基于信道脉冲响应的估计来计算后编码特性; 以及使用所述后编码特性对所述多个接收信号进行后编码,以产生至少第一延迟扩展补偿信号。 还公开了相应的计算机程序产品,处理布置和通信设备。
    • 48. 发明申请
    • Method and System and Device for CQI Estimation Disturbance Cancellation
    • 用于CQI估计干扰消除的方法和系统和设备
    • US20110305268A1
    • 2011-12-15
    • US13059892
    • 2009-07-10
    • Bengt LindoffBo Lincoln
    • Bengt LindoffBo Lincoln
    • H04B17/00
    • H04B17/345H04B17/336
    • The current invention relates to a method of determining a quality of a received signal, wherein the method comprises receiving a signal comprising a first part and a second part and wherein at least the second part of the received signal comprises a scrambling sequence period; and determining a first noise-and-interference power of the first part of the received signal by removing a second noise-and-interference power of the second part of the signal, wherein the scrambling sequence period is utilized in the removal. The invention further relates to a corresponding device and system. Thereby, the invention is able to, among other things, reduce neighbor cell reference symbol interference in a dense network.
    • 本发明涉及一种确定接收信号质量的方法,其中该方法包括接收包括第一部分和第二部分的信号,并且其中接收信号的至少第二部分包括加扰序列周期; 以及通过去除所述信号的第二部分的第二噪声和干扰功率来确定所述接收信号的第一部分的第一噪声和干扰功率,其中所述加扰序列周期用于所述去除。 本发明还涉及相应的设备和系统。 因此,本发明能够在密集网络中减少相邻小区参考符号干扰。
    • 49. 发明授权
    • Power-aware link adaptation in a wideband CDMA system
    • 宽带CDMA系统中的功率感知链路自适应
    • US08055291B2
    • 2011-11-08
    • US11854135
    • 2007-09-12
    • Jacobus Cornelis HaartsenBengt LindoffAnders Wallén
    • Jacobus Cornelis HaartsenBengt LindoffAnders Wallén
    • H04B7/00
    • H04W72/08H04W52/0232H04W52/0245Y02D70/12Y02D70/22
    • Methods and apparatus are disclosed for reducing mobile terminal energy consumption during data transmissions by allocating link resources and adapting link parameters in an energy-aware manner, based on throughput requirements and prevailing channel conditions. A combination of transmit parameters that includes a transmit channelization scheme and is designed to minimize the total energy consumed during data transmission is selected based on a throughput requirement and one or more channel conditions associated with the data transmission. The channelization scheme includes a number of subchannels to be used and subchannel configuration parameters for each subchannel, such as spreading codes, spreading factors, and subchannel power levels. The combination of transmit parameters may also include a modulation format, coding scheme, and transmit power setting, as well as parameters relating to multiple-antenna transmit schemes.
    • 公开了用于通过基于吞吐量要求和主要信道条件以能量感知方式分配链路资源和适配链路参数来减少数据传输期间的移动终端能量消耗的方法和装置。 基于吞吐量要求和与数据传输相关联的一个或多个信道条件来选择包括发射信道化方案并被设计为使数据传输期间消耗的总能量最小化的发射参数的组合。 信道化方案包括要使用的多个子信道和每个子信道的子信道配置参数,例如扩展码,扩频因子和子信道功率电平。 发射参数的组合还可以包括调制格式,编码方案和发射功率设置以及与多天线发射方案有关的参数。
    • 50. 发明授权
    • Wireless communication methods and receivers for receiving and processing multiple component carrier signals
    • 用于接收和处理多分量载波信号的无线通信方法和接收机
    • US08050343B2
    • 2011-11-01
    • US12324523
    • 2008-11-26
    • Fredrik NordströmNiklas AndgartBengt Lindoff
    • Fredrik NordströmNiklas AndgartBengt Lindoff
    • H04L27/28
    • H04L5/0007H04L5/0042H04L27/2634H04L27/2647
    • A wireless communication system receiver receives and processes a signal comprising at least two component carriers carrying data scheduled to the receiver and having center frequencies spaced apart by at least one component carrier frequency difference. Each component carrier comprises a number of subcarriers spaced apart by a system subcarrier frequency spacing. A common divisor is obtained for the at least one component carrier frequency difference and the system subcarrier frequency spacing. A symbol is received on the subcarriers of the component carriers and downconverted to baseband to produce a baseband symbol. A block of padding values is inserted in the baseband symbol to produce a padded symbol. The length of the block of padding values is such that intermediate subcarriers are inserted to yield a subcarrier frequency spacing for the padded symbol equal to the common divisor. Finally the padded symbol is Fast Fourier Transform, FFT, processed.
    • 无线通信系统接收机接收并处理包括至少两个分量载波的信号,所述至少两个分量载波携带调度到接收机的数据,并具有间隔至少一个分量载波频率差的中心频率。 每个分量载波包括通过系统子载波频率间隔间隔开的多个子载波。 获得至少一个分量载波频率差和系统子载波频率间隔的公约数。 在分量载波的子载波上接收符号并且下变频到基带以产生基带符号。 在基带符号中插入填充值块以产生填充符号。 填充值块的长度使得插入中间子载波以产生等于公约数的填充符号的子载波频率间隔。 最后,填充符号是快速傅里叶变换,FFT处理。