公开(公告)号：US20030016764A1

公开(公告)日：2003-01-23

申请号：US10184035

申请日：2002-06-26

Applicant: STMicroelectronics S.A.

Inventor： Jean-Marc Brossier ,  Thierry Lenez

IPC: H04L027/06 ,  H03D001/00 ,  H03H007/40

CPC classification number: H04L7/0054 ,  H04L7/0029

Abstract: A receiver for a digital data transmission device for receiving a digital signal and comprising a free sampler physically taking samples rk of a received signal r(t) at a frequency at least equal to twice the received signal spectrum maximum frequency. A digital interpolator allows to derive a sequence of samples Xk calculated from said physical samples, according to a tuning parameter null. An equalizer adjustable to a set of equalization parameters e allows to process said interpolator output samples Xk. A computing unit simultaneously provides, in a single processing, values of null to the digital interpolator and values of the equalization parameters e to the digital equalizer. The invention also provides a method for digitally processing a received signal in a digital transmission device.

Abstract translation: 一种用于数字数据传输设备的接收器，用于接收数字信号并且包括以至少等于接收信号频谱最大频率的两倍的频率物理地采集接收信号r（t）的采样rk的自由采样器。 数字插值器允许根据调谐参数tau导出从所述物理样本计算的样本序列X k。 可调整到一组均衡参数e的均衡器允许处理所述插值器输出样本Xk。 计算单元在单个处理中同时提供对数字内插器的τ值和均衡参数e到数字均衡器的值。 本发明还提供了一种在数字传输设备中数字处理接收信号的方法。

公开(公告)号：US20040039983A1

公开(公告)日：2004-02-26

申请号：US10386123

申请日：2003-03-10

Applicant: STMicroelectronics S.A.

Inventor： Jean-Marc Brossier ,  Frederic Lehmann

IPC: H03M013/00

CPC classification number: H04L1/0042 ,  H04L1/0003 ,  H04L1/0071

Abstract: A modulation process for a digital transmission system having an error correcting code and determination of the number of bits to load on a transmission channel. The process judiciously associates a coder for introducing redundancy to the binary information, an interleaver for suppression the correlation to the encoded information and a labeling of the same based on a GRAY type coding in order to associate the said binary information with points of a constellation which is selected among a predetermined set of constellations. The process achieves a precise determination of the order and size of the constellation to utilize and, therefore, the computation of the bit loading as a function of the signal to noise ratio measured in reception and as a function of the bit error rate Pbit at the output of the receiver. The process is well adapted to the Multi Tone transmission system, and to the use of turbo codes.

Abstract translation: 一种用于具有纠错码和在传输信道上加载的比特数的确定的数字传输系统的调制过程。 该过程明确地将用于将冗余引入二进制信息的编码器，用于抑制与编码信息的相关性的交织器和基于灰度类型编码的标记，以便将所述二进制信息与星座的点相关联， 被选择在一组预定的星座中。 该过程实现了使用的星座的顺序和尺寸的精确确定，并且因此实现了在接收时测量的作为信噪比的函数的比特加载的计算，并且作为在接收时的比特误码率Pbit的函数 接收机的输出。 该过程很好地适应于多音调传输系统以及使用turbo码。