基于TR-RASK的多输入多输出UWB方案

本文提出了一种基于时间反演接收天线移位键控的多输入多输出超宽带（time reversal receive antenna shift keying multiple input multiple output ultra wide band，TR-RASK-UWB）方案，较好地解决了MIMO-UWB系统中多天线干扰和多径干扰的问题。首先，该方案利用RASK调制将发射天线阵列形成空间波束，同时使用TR技术聚焦发射信号到达目标接收天线；其次，通过最大接收功率检测算法理论推导了该方案在UWB多径信道下的误比特率（bit error rate，BER）表达式，并通过仿真得到验证；最后结果表明，在发射天线和接收天线相同的情况下，所提方案的性能相比于MIMO-UWB有较大提升。 

Multiple Input Multiple Output UWB Scheme Based on TR-RASK

? ?In this paper， a multiple input multiple output （MIMO） ultra wide band scheme based on time reversal receive antenna shift keying （TR-RASK-UWB） is proposed， which obviously solves the problems of the multiple antenna interference， and multiple path interference in MIMO-UWB system. Firstly， the receive antenna shift keying （RASK） modulation is used to form a spatial beam from the transmit antenna array， and time reversal （TR） technology is used to focus the transmit signal to the target receiving antenna in this scheme， secondly， the bit error rate （BER） expression of the scheme in ultra wide band （UWB） multipath channel is derived theoretically by the maximum received power detection algorithm， and results verified by simulation； finally， the results show that the transmit antenna and the receive antenna are the same， the performance of the proposed scheme is significantly improved compared with MIMO-UWB.