公开(公告)号：US20090041097A1

公开(公告)日：2009-02-12

申请号：US12026202

申请日：2008-02-05

申请人： Sung-won LEE ,  Young-gon CHOI ,  Jung-ho KIM ,  Yong-sung ROH ,  Hyun-cheol PARK ,  Joong-soo MA ,  Nam-shik KIM

发明人： Sung-won LEE ,  Young-gon CHOI ,  Jung-ho KIM ,  Yong-sung ROH ,  Hyun-cheol PARK ,  Joong-soo MA ,  Nam-shik KIM

IPC分类号： H04B3/36

CPC分类号： H04B3/36

摘要： Provided are a network-coding apparatus and method which can increase a data communication capacity in a communication environment to which an error-correction code (ECC) is applied. The network-coding apparatus includes a received signal processing unit receiving at least two signals, and decoding the at least two received signals; and a transmission signal processing unit receiving the at least two decoded signals from the received signal processing unit, merging the at least two decoded signals, and generating a merged transmission signal.

摘要翻译： 提供一种能够增加应用纠错码（ECC）的通信环境中的数据通信能力的网络编码装置和方法。 网络编码装置包括：接收信号处理单元，接收至少两个信号，并解码该至少两个接收信号; 以及发送信号处理单元，从所述接收信号处理单元接收所述至少两个解码信号，合并所述至少两个解码信号，并生成合并的发送信号。

公开(公告)号：US20090041095A1

公开(公告)日：2009-02-12

申请号：US12026108

申请日：2008-02-05

申请人： Sung-won LEE ,  Young-gon CHOI ,  Jung-ho KIM ,  Yong-sung ROH ,  Hae-lyong KIM ,  Nam-shik KIM ,  Hyun-cheol PARK ,  Joong-soo MA

发明人： Sung-won LEE ,  Young-gon CHOI ,  Jung-ho KIM ,  Yong-sung ROH ,  Hae-lyong KIM ,  Nam-shik KIM ,  Hyun-cheol PARK ,  Joong-soo MA

IPC分类号： H04B1/707

CPC分类号： H04L27/2675 ,  H04L27/266 ,  H04L27/2672 ,  H04L2027/0046

摘要： Provided is a fine frequency synchronization method of a WiBro system, and particularly, a fine frequency synchronization method which measures a spread degree of a received signal of an adjacent subcarrier using orthogonality of PN sequences and thereby estimates a frequency offset, in a base station or a wireless repeater without using a GPS receiver. The fine frequency synchronization method includes: (a) performing despreading on received adjacent subcarrier sequences, using a PN sequence transmitted from a transmitting party; (b) obtaining ratios of correlative values obtained by the despreading; and (c) estimating a frequency offset on the basis of the ratio of correlative values. Accordingly, fine frequency offset estimation with relatively low complexity is possible without using a GPS receiver in a WiBro environment where interference signals of other base stations or repeaters exist.

摘要翻译： 提供了一种WiBro系统的精细频率同步方法，特别是精细频率同步方法，其使用PN序列的正交性来测量相邻副载波的接收信号的扩展程度，从而估计基站中的频率偏移， 无需使用GPS接收机的无线中继器。 精细频率同步方法包括：（a）使用从发送方发送的PN序列对接收到的相邻子载波序列执行解扩; （b）获得通过解扩获得的相关值的比率; 和（c）基于相关值的比率估计频率偏移。 因此，在WiBro环境中不使用其他基站或中继器的干扰信号的GPS接收机的情况下，可以实现相对低的复杂度的精细频偏估计。