公开(公告)号：US20080170635A1

公开(公告)日：2008-07-17

申请号：US12014195

申请日：2008-01-15

申请人： Hiroshi Ochi ,  Yasushi Tsue ,  Satoru Ishii

发明人： Hiroshi Ochi ,  Yasushi Tsue ,  Satoru Ishii

IPC分类号： H04L27/28

CPC分类号： H04L27/2607 ,  H04L25/03159 ,  H04L27/2626 ,  H04L27/2647 ,  H04L27/2662

摘要： An OFDM communication system is provided that can implement more accurate signal transmission. The guard interval in the symbol section is formed by copying a predetermined number of symbols at the end portion of the symbol section and adding them to the forefront portion of the symbol portion. In the subsidiary station, the clipping start position stored in its memory is referred. Then, a predetermined number of symbols are clipped from the clipping start position. The clipped signal includes the guard interval of the symbols. However, since the guard interval is the signal obtained by copying the rear portion of the symbol, the clipping signal is the signal in which the phase of the symbol is merely deviated. An accurate symbol is obtained by performing phase correction. Thus, the influence due to multipath is suppressed while the signal transmitted from the base station can be accurately decoded.

摘要翻译： 提供了可以实现更准确的信号传输的OFDM通信系统。 符号部分中的保护间隔通过在符号部分的末端部分复制预定数量的符号并将它们相加到符号部分的最前端部分而形成。 在子站中，参考存储在其存储器中的限幅起始位置。 然后，从剪切开始位置剪切预定数量的符号。 限幅信号包括符号的保护间隔。 然而，由于保护间隔是通过复制符号的后部获得的信号，所以限幅信号是符号的相位仅仅偏离的信号。 通过执行相位校正获得精确的符号。 因此，可以准确地解码从基站发送的信号，从而抑制多径的影响。