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为解决时分双工长期演进(TDD-LTE)系统中预编码码本选择算法计算复杂度高的问题,在基于容量最大化和基于误码率最小为准则的预编码选择算法的基础上,提出了一种基于信道奇异值分解的预编码选择算法.该算法采用信道平均的思想和发射信号有效功率最大化的准则,在不损失吞吐量性能的前提下,大大降低了算法复杂度.仿真结果表明,该算法所需的计算量只有上述传统算法的26%～33%,而吞吐量性能损失不大.
In order to solve the high computational complexity of the precoding codebook selection algorithm in time division duplex long term evolution (TDD-LTE) system, based on the precoding selection algorithm based on capacity maximization and minimum bit error rate A new pre-coding selection algorithm based on channel singular value decomposition is proposed in this paper, which adopts the idea of channel averaging and the criterion of maximizing the effective power of the transmitted signal, which greatly reduces the complexity of the algorithm without losing the throughput performance. It shows that the computational cost of this algorithm is only 26% ~ 33% of that of the above traditional algorithm, while the throughput performance is not greatly lost.