提出了一种超宽带-正交频分复用(ultra wideband—orthogonal Irequency—division muctiplexing,UWB—OFDM)系统的改进方案。该方案在不改变现有IEEE802.15.3a协议的基础上支持多速率业务,并依据重复数据不再统计独立而具有良好的相关特性这一特点,提出了一种简便高效的多速率检测方法。仿真结果表明:这种改进方法,在UWB信道下具有优异性能。
The paper puts forward a kind of improvement project of the UWB-OFDM system which supports multirate services without changing the existing IEEE802.15.3a standard, designs a multirate detection method which relies on the fact that the data source is statistically independent and the repeated data piece has the best related characteristic. Simulation results have demonstrated that new algorithm in the UWB channel has good performance properties.