电讯技术2016，Vol.56Issue(3)：241-245,5.DOI:10.3969/j.issn.1001-893x.2016.03.002
C-RAN协作通信系统中基于正交预编码的同步算法
A Synchronization Algorithm Based on Orthogonal Pre-coding in C-RAN Cooperative Communication System
摘要
Abstract
Cooperative multi-point processing( CoMP) technology is influenced by symbol timing offset and carrier frequency offset in the wireless network infrastructure centralized, cooperative, cloud radio access network( C-RAN) . In order to reduce the sensitivity to asynchronous signal in joint transmission system, the orthogonal pre-coding synchronization algorithm is used to mitigate the effect of asynchronous signals. Firstly,the transmitter sends data which has been processed by repetition coding and orthogonal pre-coding matrix. Then,the receiver estimates and compensates the frequency and time offset for the cooperative sig-nals which been separated by a particular accepting matrix. Simulation results demonstrate that this method can effectively solve the problem of asynchronous transmission and improve the performance of collaborative transmission systems.关键词
C-RAN/协作多点传输/正交预编码/同步算法Key words
C-RAN/CoMP/orthogonal pre-coding/synchronization algorithm分类
信息技术与安全科学引用本文复制引用
余翔,曾银强,郑寒冰..C-RAN协作通信系统中基于正交预编码的同步算法[J].电讯技术,2016,56(3):241-245,5.基金项目
国家科技重大专项(2014ZX03003004-003) （2014ZX03003004-003）
