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    • 21. 发明申请
    • WIRELESS MULTIPLE ACCESS SYSTEM FOR SUPPRESSING INTER-CELL INTERFERENCE
    • 无线多路访问系统,用于抑制细胞间干扰
    • WO2006088326A3
    • 2006-11-09
    • PCT/KR2006000546
    • 2006-02-17
    • LG ELECTRONICS INCAHN JOON KUIKIM BONG HOESEO DONG YOUNKIM HAK SEONGROH DONG WOOK
    • AHN JOON KUIKIM BONG HOESEO DONG YOUNKIM HAK SEONGROH DONG WOOK
    • H04B7/216H04J11/00H04J13/00H04L12/52H04L27/32
    • H04B7/2615H04L5/0017H04L5/0073H04L25/03866
    • An OFDM based multiple access system provides strong persistence against selective frequency fading and further provides suppression of inter-cell interference by using cell differentiating scrambling codes. Thus, the OFDM system maximizes frequency reuse rate. The present invention includes an OFDM modulator (30) frequency-division-multiplexing data to be transmitted, a code division unit (32) multiplexing the frequency-division-multiplexing data with a prescribed code, and an RF end (33) converting the data multiplexed by the code division unit to a radio frequency signal to tansmit. Accordingly, the present invention raises the degree of freedom (frequency division, time division, code division) of system implementation in the multiple access system. The OFDM system includes the scambling of the downlink data by different scrambling codes by a cell unit for base stations within at least two neighboring cells to identify the respective cells and transmitting the spread downlink data.
    • 基于OFDM的多址系统提供对选择性频率衰落的强持续性,并且还通过使用小区差分扰码来进一步提供小区间干扰的抑制。 因此,OFDM系统使频率重用率最大化。 本发明包括:OFDM调制器(30)对要发送的数据进行频分复用,分频单元(32)将分频多路复用数据与规定码复用;以及RF端(33),转换数据 由代码分割单元复用到射频信号以进行篡改。 因此,本发明提高了多址系统中系统实现的自由度(分频,时分,码分割)。 OFDM系统包括通过不同扰码的下行链路数据通过小区单元对至少两个相邻小区内的基站进行漫游,以识别各个小区并发送扩展的下行链路数据。