采用CCSK承载非同步随机接入信息的方法

A CCSK Carrying Non-Synchronization Information Technique for Random Access Receiver

未来的移动通信系统要求提供的数据传输速率将高达100Mb/s以上,支持的业务也将从语音业务扩展到多媒体业务(包括实时的流媒体业务)。该文提出采用m序列的不同循环移位来构建CCSK序列,并在前导CAZAC序列上叠加CCSK序列,以用于隐含承载接入信息。为了减少两个序列之间的相互影响,调整两种序列之间的能量比例以及采用干扰消除,将显著提高两种序列的检测性能。

The data transmission rate will be update to 100 Mb/s in future mobile communication system, which require to supply multimedia traffic. So, high spectrum effective and great capacity techniques need to be researched. In this paper, we put forward a random access information bearing method, in which a constant amplitude zero auto-correlation （CAZAC） sequences is added by a cyclic code shift keying （CCSK） sequences, and the CCSK sequences are constructed by circle shifting of m sequences. With the method, the mutual interference of two sequences will be reduced. To cancel the interference, one power ratio adjustment technique is proposed, which is able to improve detection performance dramatically by simulation.