摘要
通过Simulink仿真和FPGA板级验证,为基于隧道二极管电路的脉冲超宽带(Impulse RadioUltra-wideband,IR-UWB)接收机提出了一种同步机制。在物理层中使用了改进数据转换跟踪环的位同步方法,使之可以对单比特数据进行位同步,码速率为2 Mbit/s时误码率趋近于零;MAC层使用了经过变换的IEEE 802.15.4a中的31位帧引导序列,引导序列出现8位误码时仍然能进行够准确的帧同步。这种机制适用于空间探测无线传感器网络。
A synchronization scheme for the tunnel diode circuit based Impulse Radio Ultra-wideband （IR - UWB） receiver is discussed through simulation and board-level verification with Simulink and FPGA. The modi- fied data transition tracking loop bit synchronization method is adopted, providing a bit synchronization method for the 1Mbit/s single-bit data with the bit error rate approaching zero. The modified 31 - bit sequences in the IEEES02.15.4a are used in the MAC layer,which can achieve perfect frame synchronization even there are 8 bit errors. The discussed scheme can be applied to the Wireless Sensor Network（WSN） for space exploration.
出处
《电讯技术》
北大核心
2011年第11期53-57,共5页
Telecommunication Engineering
关键词
空间探测
无线传感器网络
脉冲超宽带
位同步
帧同步
space exploration
wireless sensor network
IR - UWB
bit synchronization
frame synchronization
