摘要
利用二值映射实序列的IFFT特性，提出一种OFDM系统定时同步的新算法——BPSK Mapping（BM）定时同步算法。仿真结果表明，新算法具有类似冲激响应的定时度量曲线，与schmidl和Minn算法相比，不仅降低了系统定时同步实现的复杂度，还提高了定时精度。
In this letter, a novel timing offset estimation algorithm for OFDM systems is presented using the IFFT characteristic of double value mapping real sequence. The simulation results show that the BPSK Mapping （BM） timing method has the impulse response timing metric curve, and the proposed method not only reduces the complexity of timing estimation but also improves the precision of timing estimator compared with Shcmidl algorithm and Minn algorithm.
出处
《通信对抗》
2007年第1期18-21,24,共5页
Communication Countermeasures
关键词
正交频分复用
二值映射实序列
同步
定时度量
Orthogonal Frequency Division Multiplexing（OFDM）
double value mapping real sequence
synchronization
timing metric
