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在有限反馈系统中,针对用户端向基站反馈完整的信道状态信息对上行链路传输能力要求较高、设备实现较为复杂的问题,给出一种基于码本的最大化SLNR及SFR的PF调度算法。该算法通过码本量化预编码矩阵,基站仅需用户端反馈码本编号即可获得预编码矩阵,从而大大降低了信息反馈量。仿真结果表明,算法保证了系统和边缘用户性能,但是,作为降低反馈量的代价,与引入码本前相比,算法性能略微下降。
In the limited feedback system, aiming at the problem that the user terminal feeds back the complete channel state information to the base station, which has high requirements on the uplink transmission capability and the equipment is more complicated, a PF scheduling based on codebook to maximize SLNR and SFR algorithm. The algorithm quantifies the precoding matrix through the codebook, and the base station can obtain the precoding matrix only by feeding back the codebook number of the user terminal, thereby greatly reducing the amount of information feedback. The simulation results show that the algorithm guarantees the performance of the system and the edge user. However, the performance of the algorithm decreases slightly compared with that before the codebook is introduced as the cost of reducing the amount of feedback.