摘要
分析了利用保护间隔估计数字音频广播(DAB)系统载波细频偏时码间串扰带来的误差,降低码间串扰对码元同步影响的基础上,提出一种改进的利用保护间隔计算载波细频偏的方法。20径的AGWN信道仿真结果表明,方法具有较好的性能。提出的方法也适用于其它的正交频分复用(OFDM)系统。
Using guard interval to estimate the error introduced by the crosstalk between carrier fine frequency offset and time code in digital audio broadcasting(DAB)system is analyzed and then an enhanced method based on the method in is proposed.At last comparison of per-formance of these methods is simulated under AGWN and20paths multipath channel model.The result shows that our proposed method provide better performance.The proposed method is also suitable for other OFDM systems.[
出处
《电声技术》
北大核心
2002年第10期59-62,共4页
Audio Engineering
