适应车载自组织网络拓扑瞬态时变的多相滤波器组信道化方法

Multi Phase Filter Bank Channel Method Adapted to Vehicular Ad Hoc Network Topology Transient Time Variant

车载网络拓扑结构容易受到瞬态时变干扰。为了保证信号的完整性,提出一种改进的实信号多相滤波器组信道化方法。此方法利用实信号频谱对称特征,将信道进行对称划分;然后在多相处理前端进行比现有多相滤波器组信道化结构高2倍的抽取处理,进一步降低了后续处理的数据速率;最后对复指数调制部分进行的优化处理使该结构的硬件实现效率更高。此方法在和现有方法达到相同效果的前提下,大大降低了复杂度,提高了车载网络中实时信号处理的能力,在通信接收机以及各种子带分离系统中也具有很广泛的应用前景。

The vehicular network topology is vulnerable to transient time varying interference. In order to ensure the integrity of the signal, this an improved method of multi phase filter banks was proposed. Symmetrical characteristic of real signal spectrum by using this method, the symmetric channel was divided, and then in front of the polyphase processing extraction processing than the existing polyphase filtering channel structure is 2 times higher, further reduce the processing data rate at the end of the complex optimization index modulation part of the structure of the hardware processing efficiency higher. The premise of this method and achieve the same effect in the existing methods, the complexity and improves the ability of real-time signal processing were greatly reduced in vehicle networks, in a communication receiver and various sub bands also has very broad application prospects in the separation system.