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    • 7. 发明授权
    • Transmission apparatus and method for use in mobile communication system based on orthogonal frequency division multiplexing scheme
    • 基于正交频分复用方案的移动通信系统中使用的传输装置和方法
    • US07417964B2
    • 2008-08-26
    • US10872807
    • 2004-06-21
    • Young-Kwon ChoKatz Marcos DanielSeok-Hyun YoonDong-Seek ParkSeong-Ill ParkHo-Kyu ChoiPan-Yuh JooYoung-Kyun KimHyeon-Woo Lee
    • Young-Kwon ChoKatz Marcos DanielSeok-Hyun YoonDong-Seek ParkSeong-Ill ParkHo-Kyu ChoiPan-Yuh JooYoung-Kyun KimHyeon-Woo Lee
    • H04B7/204
    • H04L5/006H04L5/0017H04L5/0046H04L5/0048
    • A transmitter for a mobile communication system based on an OFDM scheme and a method for controlling the same. The transmitter can implement a characteristic of a multiple access scheme based on an OFDM scheme, a characteristic of a CDMA scheme, and a characteristic of a frequency hopping scheme which has very strong resistance to the frequency selective fading. An apparatus for transmitting information bit sequences from a BS (Base Station) transmitter to different users, includes a plurality of channelizers for dividing a single frame of information bit sequences to be transmitted to individual users into a plurality of times according to a given time interval, simultaneously transmitting the information bit sequences to the individual users within the plurality of division times, dividing the information bit sequences, spreading the divided information bit sequences using different Walsh codes, converting the spread information bit sequences into a single sequence associated with the individual users, and outputting the single sequence; and a frequency hopper for dividing the single sequence, distributing the spread information bit sequences over a plurality of bandwidths capable of mapping-processing the spread information bit sequences with sub-carrier frequencies, and preventing each of the bandwidths from overlapping with time-frequency cells given by the given time interval.
    • 一种用于基于OFDM方案的移动通信系统的发射机及其控制方法。 发射机可以基于OFDM方案,CDMA方案的特征以及对频率选择性衰落具有非常强的抵抗性的跳频方案的特性来实现多址方案的特性。 用于从BS(基站)发射机向不同用户发送信息比特序列的装置包括:多个信道化器,用于根据给定的时间间隔将要发送给各个用户的单个信息比特序列划分成多个时间 同时在多个分割时间内将信息比特序列发送给各个用户,分割信息比特序列,使用不同的沃尔什码扩展分割的信息比特序列,将扩展信息比特序列转换成与各个用户相关联的单个序列 并输出单个序列; 以及用于分割单个序列的频率漏斗,在扩展信息比特序列分布在能够对扩展信息比特序列进行映射处理的子载波频率的多个带宽上分布,并且防止每个带宽与时频小区重叠 由给定的时间间隔给出。