摘要
提出了一种基于谱相关的正交频分复用信号(OFDM)子信道调制方式盲检测算法。该算法利用循环谱相关检测特征参量实现对子信道调制方式的检测,所提出的特征参量可抑制高斯噪声的影响。通过计算机仿真评估了该算法对正交频分复用信号(OFDM)子信道调制类型盲检测的性能,表明这种算法在高斯信道下具有很高的调制方式识别性能和很强的稳健性。
A blind detection algorithm based on spectral correlation is proposed to detect the modulation scheme for the OFDM subcarriers. Its detection feature is robust to the Gaussian noise. The high performance and robustness of the blind detection algorithms are proved by simulation.
出处
《通信技术》
2008年第1期4-5,8,共3页
Communications Technology
关键词
正交频分复用
信号检测
调制识别
谱相关
OFDM
signal detection
modulation recognition
spectral correlation
