基于交叉极化的混合双工方法

Hybrid Duplex Method Based on Cross Polarization

全双工技术使得信号的发送和接收可以同时同频进行而提升了频谱利用效率。与此同时,信号的同时同频发送和接收使得发送链路对接收链路造成较强的自干扰问题。自干扰消除使得信号收发器的结构较为复杂,而不适用于移动终端设备。提出了一种基于交叉极化的混合双工通信方法,该方法基于交叉极化-频率资源进行干扰隔离。由于频率和交叉极化本身具备一定的正交性,因此不需要复杂处理而降低移动设备端的复杂度。此外,基站端可以承受较高的复杂度而按照用户的距离对交叉极化资源进行分配,以弥补交叉极化正交性不理想的缺陷。仿真结果表明,相比完全全双工以及完全半双工的通信方法,提出的混合双工通信方法在降低实现复杂度的同时,可以保证较高的小区平均吞吐量。

The full-duplex technique can improve the spectral efficiency with the merits of concurrent transmitting and receiving signals at the same frequency and the same time.Meanwhile,the transmitting link will impose severe self-interference on the receiving link due to the concurrent signal transmitting and receiving at the same frequency and the same time.A hybrid duplex communication method based on cross polarization is proposed,and this method uses cross polarization and frequency resource to isolate the interference.Since certain orthogonality intrinsically exists in the frequency and cross polarization,complex processing can be avoided and the complexity of mobile devices is hence reduced.Moreover,since the base station can bear high complexity,it can allocate the cross polarization resource based on the user distance,to improve the non-ideal orthogonality of cross polarization.The simulation results show that in comparison to full-duplex and half-duplex communications,the proposed hybrid duplex method can reduce the complexity and guarantee high cell average throughput.