公开(公告)号：EP1750387A1

公开(公告)日：2007-02-07

申请号：EP06016130.4

申请日：2006-08-02

申请人： Samsung Electronics Co., Ltd.

发明人： Cho, Myeon-Gyun c/oSamsung Electronics ,  You, Cheol-Woo c/oSamsung Electronics ,  Kwun, Jong-Hyung c/oSamsung Electronics

IPC分类号： H04L5/02 ,  H04B1/713

CPC分类号： H04L5/0017 ,  H04B1/713 ,  H04L5/0041 ,  H04L27/2605

摘要： A transmission apparatus and method for a communication system based on Orthogonal Frequency Division Multiplexing-Code Division Multiplexing (OFDM-CDM). A frequency spreader multiplies symbols to be transmitted by a frequency spreading factor and outputs frequency spread symbols whose number corresponds to the frequency spreading factor. Buffers whose number corresponds to the frequency spreading factor temporarily store the frequency spread symbols in a unit of a predefined number of symbols. A time spreader multiplies parallel frequency spread symbols from the buffers by a time spreading factor and outputs frequency-time spread symbols. An Inverse Fast Fourier Transform (IFFT) processor performs IFFT on the frequency-time spread symbols, and outputs an OFDM symbol. A Guard Interval (GI) inserter inserts a GI into a signal output from the IFFT processor and transmits the signal. The system can obtain complete diversity gain and residual gain due to the effect of a time-varying channel in any channel environment.

摘要翻译： 一种基于正交频分复用码分多路复用（OFDM-CDM）的通信系统的发送装置和方法。 频率扩展器将通过频率扩展因子发送的符号相乘，并输出数字对应于频率扩展因子的频率扩展符号。 数量对应于频率扩展因子的缓冲器以预定数量的符号为单位临时存储频率扩展符号。 时间扩展器将来自缓冲器的并行频率扩展符号乘以时间扩展因子并输出频率 - 时间扩展符号。 逆快速傅立叶变换（IFFT）处理器对频率 - 时间扩展符号执行IFFT，并输出OFDM符号。 保护间隔（GI）插入器将GI插入到从IFFT处理器输出的信号中并发送信号。 由于任何信道环境中时变信道的影响，系统可以获得完整的分集增益和剩余增益。