LOS环境下零导频Massive MIMO通信方法

针对频分双工大规模多输入多输出系统中导频开销过大和现有信道估计算法计算复杂度高等问题，提出一种零导频的通信方法．在该方法中，发射端不发送导频，利用位置信息估计波达角，对发射信号进行调整，形成定向波束；接收端直接对接收数据进行解调．仿真结果表明，与传统频分双工大规模多输入多输出系统相比，所提通信方法大大降低了导频开销和计算复杂度，提高了频谱效率，且在高信噪比下，系统和速率提高了约4.6dB．

Massive MIMO communication method based on the zero pilot in LOS environment

To resolve the problem that the pilot overheads and the computation complexity of traditional channel estimation algorithms are too large in frequency division duplex massive multiple input multiple output (FDD Massive MIMO) system, a massive MIMO communication method based on the zero pilot is proposed. The transmitter does not transmit the pilot. The transmitter uses the location information to calculate the direction of the arrival (DOA) angle, and then adjusts the transmitted signal to form the directional beam. The receiver directly demodulates the received data without channel estimation and equalization. Simulation results show that, compared with the traditional FDD Massive MIMO system, the proposed method greatly reduces pilot overheads and the computational complexity, and improves the spectral efficiency, and that the system sum-rate improves by about 4.6dB at a high signal-to-noise ratio.