摘要
正交频分复用(OFDM)以其独特的优点已经被广泛的应用在移动通信系统中,但是峰均比问题是制约其发展的一个很大的瓶颈,针对OFDM通信系统中高的峰均比问题,设计出了一种新的基于选择性映射的发射和接收装置,该装置利用N点相关器来探察辅助信息,有效地解决了辅助信息判断错误的问题,而且经过深层次的理论分析和实验仿真表明,该方法不仅准确高效地传输辅助信息,而且不浪费系统资源,因而增强了系统抗干扰能力,提高了OFDM系统的性能。
OFDM,for its particular superiorities,is widely applied in the mobile communication system.However,PAPR is a critical bottleneck in restraining its development.So for the high PAPR in OFDM system,a novel device based on SLM（slected mapping） is designed,which takes advantage of N point correlator to detect auxiliary information,thus effectively solving the complex judge of auxiliary information.The in-deepth theoretical analysis and simulation indicates that the novel approach could accurately transmit the auxiliary information,while efficiently save system resources,thus enhancing the anti-jamming capability and improving the performance of OFDM system.
出处
《通信技术》
2010年第7期36-37,40,共3页
Communications Technology
关键词
正交频分复用
选择性映射
峰均比
辅助信息
orthogonal frequency division multiplexing（OFDM）
selected mapping（SLM）
peak-to-average power ratio（PAPR）
auxiliary information
