基于Kerdock预编码波束赋形技术的高速铁路LTE通信系统性能研究

为了提高高速铁路通信系统的可靠性和有效性,结合长期演进(LTE)通信系统的互易性,将信号处理复杂度低的Kerdock码作为预编码码本,利用Kerdock预编码波束赋形技术(KBF)对高速铁路LTE通信系统进行复杂度分析与仿真实验性能研究.结果表明:与位置辅助伺机波束赋形(L-OBF)系统相比,KBF系统在线处理信号时所需的存储容量小,发信、收信处理信号的复杂度低,大信噪比时误码性能和可达速率均有所提高.

Performance of the LTE Communication System for High-speed Railways Based on Kerdock Codes Beamforming Technology

In order to improve the reliability and efficiency of the high-speed railway mobile communication system, this paper makes a complexity analysis and simulation performance study of the high-speed LTE communication system by applying the beamforming with Kerdock Codes （called KBF） and the reciprocity of LTE （Long Term Evolution） communication system, and using the Kerdock codes which are of lesser signal processing complexity as the precoding codebook. The results show that： Compared with the Location Information-assisted Opportunistic Beamforming （L-OBF） system, the online signal processing of KBF system requires less memory and is of lower signal processing complexity when transmitting and receiving signals; the BER （Bit Error Rate） performance and the achievable rates are improved at large SNRs （Signal to Noise Ratio）.