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加扰是LTE物理层过程的一个重要环节,而扰码序列产生的快慢会对系统的整体性能产生重要的影响。由于产生伪随机序列的比特型生成算法存在耗时长、占用存储空间大的缺点,针对此问题提出了一种新型的紧凑型生成算法。在CCS5.2平台对该算法进行了实现之后,基于TMS320C6670型号DSP进行了功能和性能测试,测试结果表明,该算法功能正确,且性能较比特型生成算法提高了10倍左右。
Scrambling is an important part of the LTE physical layer process, and the speed of scrambling code generation will have a significant impact on the overall performance of the system. Due to the shortcomings of long time-consuming and large storage space, the algorithm of generating bit-type generating pseudo-random sequence has a new type of compact generation algorithm. After the implementation of this algorithm in CCS5.2 platform, the function and performance of DSP are tested based on TMS320C6670 DSP. The test results show that the algorithm has the correct function and the performance is about 10 times higher than that of the algorithm of bit pattern generation.