多带OFDM超宽带系统高性能分组检测器设计

A high performance packet detector for MB-OFDM UWB System

摘要:

针对多带OFDM超宽带(MB-OFDM UWB)系统，依据其物理层国际标准ECMA-368，提出了一种高性能的分组检测器。在改进传统互相关算法的基础上，通过累积多径能量，该分组检测器可以同时实现分组检测和符号精定时。仿真结果表明，与已有的分组检测算法相比，新方法具有更低的分组检测错误概率，同时也改善了符号精定时的准确度。

Abstract:

A high performance packet detector for MB-OFDM UWB(Multiband Orthogonal Frequency- Division Multiplexing Ultra Wideband) system is proposed according to MB-OFDM UWB physical international standard ECMA-368. On the basis of conventional cross correlation，the detector can complete packet detection and fine symbol timing at the same time by accumulating multi-path energy. Simulation results show that the new detector has a lower packet detect error rate and a higher symbol timing precision compared with the existing schemes.