Design and Realization of Pseudo- Random Sequence Generating Algorithm in LTE
YU Ziha · Communications technology · 2014
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.