一种基于时间反转法的超宽带通信系统

Ultra wide-band communication system based on time-reversed approach

提出将时间反转法用于UWB系统,在发送端进行预滤波,并推导出符号间干扰和多用户干扰的封闭表达式。通过间隔概率的合并而得到的用户复用码具有跳时序列族的特征。采用IEEE802.15.3a标准信道模型,将推导出的系统性能与仿真的跳时超宽带(ultrawide-band,UWB)系统的性能进行了比较,其中的跳时码采用Reed-Solomon。比较结果证明,仿真与推导的误码性能极其接近。

The paper presented a UWB system using a time-reversed approach through signal pre-filtering at the transmitter side,and derived closed-form expression for inter-symbol interference and multiple-users interference.The user multiplexing codes was took into account through incorporation of separation probability,which characterized a family of time hopping sequences.The IEEE 802.15.3a channel model was applied,and the derived performances were compared with that of a simulated time hopping time-reversed UWB system.The time-hopping code is Reed-Solomon in a forementioned system,and comparative results indicate a close alignment between simulated and derived error performance.