DAB单频网中循环延迟分集方法研究

Research on Cyclic Delay Diversity in DAB SFN

详细分析了循环延迟分集技术,介绍了其实现方式、延迟的选择和分集增益的原理。进一步提出了在DAB单频网中应用循环延迟分集的方法。结果表明,采用提出的循环延迟发射分集方法能有效提高单频网覆盖交叉区域的接收误码率。

The CDD（Cyclic Delay Diversity） technology, especially its implementation, delay choice and diversity gain is introduced. An implementation of CDD in DAB SFN（Same Frequency Network） system is presented, and the simulation result shows that the method improves the BER（Bit Error Rate） for intersect coverage area of different transmitters.