公开(公告)号：KR100439959B1

公开(公告)日：2004-07-12

申请号：KR1020020035134

申请日：2002-06-22

Applicant: 전자부품연구원

Inventor： 서정욱 ,  최광호 ,  곽재민 ,  조성준

IPC: H04L12/26

Abstract: PURPOSE: A channel predictor is provided to add a short training symbol to channel predicting algorithm without changing a frame format of IEEE 802.11a, thereby obtaining a more exact channel prediction value. CONSTITUTION: A signal inserts a short and long training symbol(5) thereinto for receiving an OFDM discrete signal of a time region. A complex divider(1) divides samples corresponding to a long training symbol consisting of total 128 samples for a short training symbol consisting of total 160 samples by the short and long training symbol(5), and obtains 256 result values in total. 64-sample delayers(2) delay the samples by using 256 output samples of the complex divider(1). A 64-sample average obtainer(8) obtains 64 frequency region channel prediction coefficient samples, and obtains channel prediction coefficients having less noise influence while obtaining an average.

Abstract translation: 目的：提供信道预测器以将信道预测算法添加短训练符号而不改变IEEE 802.11a的帧格式，从而获得更精确的信道预测值。 构成：信号在其中插入短而长的训练符号（5），用于接收时域的OFDM离散信号。 复合除法器（1）通过短和长训练符号（5）将对应于由总共160个样本组成的短训练符号的总共128个样本组成的长训练符号相对应的样本划分，并总共获得256个结果值。 64采样延迟器（2）通过使用复杂分频器（1）的256个输出采样来延迟采样。 64样本平均获得器（8）获得64个频域信道预测系数样本，并获得具有较小噪声影响的信道预测系数，同时获得平均值。

公开(公告)号：KR1020040000627A

公开(公告)日：2004-01-07

申请号：KR1020020035134

申请日：2002-06-22

Applicant: 전자부품연구원

Inventor： 서정욱 ,  최광호 ,  곽재민 ,  조성준

IPC: H04L12/26

Abstract: PURPOSE: A channel predictor is provided to add a short training symbol to channel predicting algorithm without changing a frame format of IEEE 802.11a, thereby obtaining a more exact channel prediction value. CONSTITUTION: A signal inserts a short and long training symbol(5) thereinto for receiving an OFDM discrete signal of a time region. A complex divider(1) divides samples corresponding to a long training symbol consisting of total 128 samples for a short training symbol consisting of total 160 samples by the short and long training symbol(5), and obtains 256 result values in total. 64-sample delayers(2) delay the samples by using 256 output samples of the complex divider(1). A 64-sample average obtainer(8) obtains 64 frequency region channel prediction coefficient samples, and obtains channel prediction coefficients having less noise influence while obtaining an average.

Abstract translation: 目的：提供一个通道预测器，用于在不改变IEEE 802.11a的帧格式的情况下向通道预测算法添加短训练符号，从而获得更准确的信道预测值。 构成：信号插入短而长的训练符号（5），用于接收时间区域的OFDM离散信号。 复分频器（1）将对应于由总共128个采样组成的长训练符号的样本分割为由短和长训练符号（5）组成的总共160个采样的短训练符号，并且总共获得256个结果值。 64采样延迟器（2）通过使用复数分频器（1）的256个输出采样来延迟采样。 64样本平均获取器（8）获得64个频域通道预测系数样本，并获得噪声影响较小的信道预测系数，同时获得平均值。