| LTE中伪随机序列生成算法的设计与实现 |
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| 引用本文： | 余子寒,姜永广,隋天宇,刘 文. LTE中伪随机序列生成算法的设计与实现[J]. 通信技术, 2014, 0(2): 150-153 |
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| 作者姓名： | 余子寒 姜永广 隋天宇 刘 文 |
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| 作者单位： | 中国电子科技集团公司第三十研究所,四川成都610041 |
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| 基金项目： | 国家自然科学基金（No.61171501） |
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| 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lO倍左右。
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| 关 键 词： | 长期演进伪随机序列 数字信号处理器 |
Design and Realization of Pseudo-Random Sequence Generating Algorithm in LTE |
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| YU Zi-han,JIANG Yong-guang,SUI Tian-yu,LIU Wen. Design and Realization of Pseudo-Random Sequence Generating Algorithm in LTE[J]. Communications Technology, 2014, 0(2): 150-153 |
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| Authors: | YU Zi-han JIANG Yong-guang SUI Tian-yu LIU Wen |
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| Affiliation: | 1. No. 30 Institute of CETC, Chengdu Siehuan 610041, China; 2. General Archive of Information Department, Beijing 100000, China) |
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| Abstract: | 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. |
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| Keywords: | LTE pseudo-random sequence DSP |
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