MB-OFDM UWB系统中交织器盲识别方法

借助峰值平均功率比(PAR)与反转误码率(RSER)信息,实现MB-OFDM UWB系统在发送端选择最佳交织器后,在不传送交织辅助信息情况下,在接收端恢复发送端使用的交织器编号,实现交织过程盲识别。将反转误码率的检测应用到对交织器的盲识别中,改进MB-OFDM UWB系统中的交织器与解交织器部分,通过对反转误码率的比较识别出发送端所选择的交织器规格,进而达到对交织序列的盲识别。对常规与改进后的系统进行误比特率仿真比较后,发现改进后的MB-OFDM UWB系统具有较好的可靠性,可以通过反转误码率的比较信息得出交织器编号,进而得到交织序列,释放信道,达到真正意义上的交织盲识别,从而实现智能通信。

Blind recognition of interleaver in the MB-OFDM UWB system

A model for blind recognition of interleaver used to recover the interleaving order is presented for MB-OFDM UWB system.After choosing the optimum interleaver with the peak-to-average power(PAR) information,the receiver structure of the improved MB-OFDM UWB system can blindly identify the interleaving order without sending side information.In the improved system,the parts of interleaver and deinterleaver in existing system are enhanced and the reverse symbol error rate(RSER) information is utilized.The rule of the interleaver in transmitter can be estimated without side information by comparing RSER.Simulations show that the system has high reliability in terms of bit error rate compared with the conventional systems.Moreover,the improved MB-OFDM UWB system can release the channel capacity and thus enable intelligent communication.