公开(公告)号：KR1020010038383A

公开(公告)日：2001-05-15

申请号：KR1019990046343

申请日：1999-10-25

Applicant: 한국전자통신연구원

Inventor： 곽지혜 ,  이병길 ,  배상재 ,  강석근 ,  이수인 ,  주언경

IPC: H03M13/27

CPC classification number: H03M13/2778 ,  H03M13/2703 ,  H03M13/2732

Abstract: PURPOSE: An exchange interleaver realizing method is provided to be capable of satisfying a distance-limited condition value and securing a sufficient random characteristic, even though the size of an interleaver is large. CONSTITUTION: A block interleaver of N is constituted so that a difference between a row and a column is minimized(301), and different random integers(i1,i2) are generated(302). Each of the integers is more than or identical to a zero and less than N. Positions of i1 and i2 interleaver values are exchanged(303). Whether a distance-limited condition value(S) is satisfied with regard to the exchanged interleaver values is checked(304). If not, the positions of the i1 and i2 interleaver values are recovered originally and the procedure goes to the 302 step. If so, whether two interleaver values are sufficiently exchanged is checked(306). If not, the procedure goes to the 302 step. If so, the procedure is ended.

Abstract translation: 目的：提供交换交织器实现方法，即使交织器的大小较大，也能够满足距离限制状态值并确保足够的随机特性。 构成：N的块交织器被构造成使得行和列之间的差被最小化（301），并且生成不同的随机整数（i1，i2）（302）。 每个整数大于或等于零且小于N.交互i1和i2交织值的位置（303）。 检查关于交换的交织器值的距离限制条件值（S）是否被满足（304）。 如果不是，则首先恢复i1和i2交织器值的位置，并且过程进行到302步骤。 如果是，则检查两个交织器值是否被充分交换（306）。 如果没有，程序进入302步骤。 如果是，程序结束。

公开(公告)号：KR1020020051549A

公开(公告)日：2002-06-29

申请号：KR1020000080921

申请日：2000-12-22

Applicant: 한국전자통신연구원

Inventor： 김수영 ,  곽지혜 ,  권태곤

IPC: H03M13/41

CPC classification number: H03M13/4138 ,  H03M13/6502

Abstract: PURPOSE: A quantization method and a metric calculation method in a repetitive decoder are provided, which quantize a signal received by a BPSK or QPSK modulation into a digital signal of q bits and calculate the metric using the above value. CONSTITUTION: According to the quantization method and the metric calculation method in a repetitive decoder of a digital communication system receiver correcting an error generated in a channel by receiving a BPSK- or QPSK-modulated signal through the channel, the method includes the first step of quantizing the above received signal into bits of an integer(q) above at least 2, and the second step of performing a soft judgement output viterbi decoding repetitively using the quantized received signal. According to the first step, the received signal is compared with judgement levels(qlevel(ql)) which are tabled in advance, and then is quantized into the above q bits according to the judgement level.

Abstract translation: 目的：提供一种重复解码器中的量化方法和度量计算方法，其将通过BPSK或QPSK调制接收的信号量化为q位的数字信号，并使用上述值计算度量。 构成：根据数字通信系统接收机的重复解码器中的量化方法和度量计算方法，通过经由信道接收BPSK或QPSK调制信号来校正信道中产生的误差，该方法包括： 将上述接收信号量化为高于至少2的整数（q）的比特，以及第二步骤，使用量化的接收信号重复执行软判决输出维特比解码。 根据第一步骤，将接收到的信号与预先提供的判定电平（qlevel（ql））进行比较，然后根据判断电平被量化为上述q位。