The Evaluation of Turbo Codes Based on Nonbinary Time-Varying Accumulate Codes over LTE Standard

• Main Authors: Ren jie Wang, 王仁傑
• Other Authors: Mao-Ching Chiu
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/vk822f

碩士 === 國立中正大學 === 通訊工程研究所 === 102 === According to results of previous researches, nonbinary repeat-accumulate codes has potential to obtain good performance by repeating the information twice resulting a similar structure to the turbo codes. Therefore, if convolutional codes used in the turbo code are replaced with time-varying accumulate codes, it may be possible to obtain good turbo codes. Recently, turbo code is widely used in wireless communication standards such as LTE, due to it’s simple structure and excellent performance. In this thesis, we replace the RSC encoders of the 4G LTE standard with the proposed time-varying accumulate encoders. The bit error rates of two different coding schemes are compared. The results show that under the same complexity the proposed coding scheme is slightly inferior than that used in the LTE standard.