公开(公告)号：US20040151110A1

公开(公告)日：2004-08-05

申请号：US10761708

申请日：2004-01-21

Applicant: STMicroelectronics S.A.

Inventor： Simone Mazzoni ,  Joel Cambonie

IPC: H04J011/00

CPC classification number: H04L27/2607 ,  H04L27/2628

Abstract: A circuit for generating a cyclic prefix of a symbol comprised of a sequence of time samples, the prefix being the reproduction of the last samples of the symbol at the beginning of the symbol, the symbol being obtained by inverse Fourier transform of complex coefficients corresponding to respective frequencies. The circuit includes a multiplier that shifts the phase of each complex coefficient by a value proportional to its frequency, a memory for storing the samples at the beginning of the symbol, and a multiplexer that copies at the end of the symbol the stored samples.

Abstract translation: 一种用于产生由时间序列序列构成的符号的循环前缀的电路，该前缀是在符号开始处的符号的最后样本的再现，该符号是通过对应于 各自的频率。 该电路包括乘法器，该乘法器将每个复系数的相位与其频率成比例的值移位，用于存储符号开始处的采样的存储器以及在符号结尾处复制存储的采样的多路复用器。