摘要
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 link to physical-layer procedure in LTE, and the generating speed of scrambling sequence has a significant influence on the overall performance of the system. Aiming at the disadvantages of long time-consuming and large storage occupation for bit-generation algorithm of pseudo- random sequence, a novel type of compact generation algorithm is proposed. Function and performance tests are carried out on the basis of TMS320C6670 DSP after the realization of this algorithm on CCS5.2 platform. The test result indicates the validity of this algorithm, and that the performance of new algorithm is better than that of the bit-generation algorithm by about 10 times.
出处
《通信技术》
2014年第2期150-153,共4页
Communications Technology
基金
国家自然科学基金(No.61171501)~~
