Method and apparatus for correlative estimation of a mobile radio channel
    2.
    发明授权
    Method and apparatus for correlative estimation of a mobile radio channel 有权
    用于移动无线电信道的相关估计的方法和装置

    公开(公告)号:US07310395B2

    公开(公告)日:2007-12-18

    申请号:US10833579

    申请日:2004-04-28

    IPC分类号: H04B1/10

    CPC分类号: H04L25/0228 H04L25/0212

    摘要: In a method for correlative estimation of a mobile radio channel on the basis of a training sequence (TS) which is transmitted via the mobile radio channel, a sequence of P received symbols is correlated with a subsequence of length P of the training sequence, in order to calculate a first estimated channel coefficient (ĥ0(1)). Furthermore, the same sequence of P received symbols is correlated with at least some of the subsequences of the training sequence (TS) shifted through ±1, ±2, . . . , ±(Lt−1) symbol positions, in order to calculate a number of further estimated channel coefficients (ĥ±1(1),ĥ±2(1), . . . ,ĥ±(Lt−1)(1)).

    摘要翻译: 在基于通过移动无线电信道发送的训练序列(TS)的移动无线电信道的相关估计方法中,P个接收符号的序列与训练序列的长度P的子序列相关, 以便计算第一估计通道系数(h 0 0 0(1))。 此外,P个接收符号的相同序列与通过±1,±2,...移动的训练序列(TS)的至少一些子序列相关。 。 。 ,±(Lt-1)个符号位置,以便计算另外估计的信道系数的数目(h <1) (1),...,h <(Lt-1)(1))。

    Device and method for control scaling and quantization of soft output values from an equalizer
    4.
    发明授权
    Device and method for control scaling and quantization of soft output values from an equalizer 失效
    用于从均衡器控制软输出值的缩放和量化的装置和方法

    公开(公告)号:US07809053B2

    公开(公告)日:2010-10-05

    申请号:US10957344

    申请日:2004-10-01

    申请人: Martin Krüger

    发明人: Martin Krüger

    IPC分类号: H03H7/30

    CPC分类号: H04L25/067

    摘要: A device for scaling and quantization of digital soft output values (sk) from an equalizer has a control loop for controlling a statistical parameter (θ) for the scaled and quantized soft output values (sD,k), which contains a calculation unit (4) for calculation of the statistical parameter (θ), and a control unit (5) for calculation of a scaling factor (c) for scaling the soft output values (sk) from the equalizer on the basis of the statistical parameter (θ).

    摘要翻译: 用于从均衡器对数字软输出值(sk)进行缩放和量化的装置具有控制循环,用于对包含计算单元(sD,k)的缩放和量化的软输出值(sD,k)控制统计参数(&amp; 4)用于计算统计参数(&amp; t);以及控制单元(5),用于计算用于根据统计参数('thetas)从均衡器缩放软输出值(sk)的缩放因子(c) ;)。

    Method and receiving unit for compensation for a frequency offset and/or for a change in the phase of a transmission channel over time by receiver-end evaluation of edge symbols of a received data burst
    5.
    发明授权
    Method and receiving unit for compensation for a frequency offset and/or for a change in the phase of a transmission channel over time by receiver-end evaluation of edge symbols of a received data burst 有权
    方法和接收单元,用于通过对接收到的数据突发的边缘符号进行接收机端评估来补偿频率偏移和/或用于随时间变化的传输信道的相位

    公开(公告)号:US07724836B2

    公开(公告)日:2010-05-25

    申请号:US10935447

    申请日:2004-09-07

    IPC分类号: H04B15/00

    摘要: In order to compensate for a frequency offset or a change in the phase of the transmission channel over time during mobile radio transmission of data symbols, the data symbols are transmitted by way of carrier-frequency, modulated data bursts. Sample values of the received signal, which are known in advance and correspond to first and second symbols, are evaluated in order to estimate the frequency offset or the change in the phase of the transmission channel over time. These first and second symbols are transmitted with a defined phase angle by way of the data burst, and are arranged separated from one another in the data burst. Edge symbols in a data burst are advantageously used as first and second symbols, or as a symbol pair, for estimation.

    摘要翻译: 为了补偿在数据符号的移动无线电传输期间随着时间的传输信道的频率偏移或相位的变化,数据符号通过载频调制的数据脉冲串发送。 对预先已知并对应于第一和第二符号的接收信号的采样值进行评估,以估计传输信道随时间的频率偏移或相位变化。 这些第一和第二符号通过数据脉冲串以定义的相位角发送,并且在数据脉冲串中被布置为彼此分离。 数据突发中的边缘符号有利地用作第一和第二符号,或作为符号对用于估计。