在先进长期演进( LTE-A)系统中，伪随机序列生成时内存占用量和执行时间会随着序列长度的增加而显著增加。针对该问题，提出了一种循环替换算法，即在3GPP LTE-A系统中的低消耗(内存)、低复杂度的伪随机序列生成算法。此外，对传统伪随机序列生成算法进行了改进，使得伪随机序列生成过程中的内存占用量和执行时间大大缩短。仿真结果证明了所提出算法的高效性和低消耗性。该算法对提高整个系统的性能有一定的意义。%In LTE-A system,memory usage and execution time for generating pseudo random sequence are significantly increasing with the increment of the sequence length. For solving this problem,the circularly replacement algorithm is proposed. This generation algorithm features low memory consumption and low complexity in 3GPP LTE-A system. In addition,the traditional pseudo random sequence generation algorithm is improved. The memory usage and execution time in pseudo random sequence generation is greatly reduced. The simulation results verify the high efficiency and low consumption of the proposed algorithm. This algorithm possesses certain significance for enhancing the performance of entire system.
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