Journal Search Engine
The Journal of The Korea Institute of Intelligent Transport Systems Vol.8 No.1 pp.110-118
PB/MC-CDMA 시스템에서 여분의 코드집합을 이용한 PAPR 감쇄기법에 관한 연구
Research on the PAPR Reduction Method using Selection of Extra Code Set in PB/MC-CDMA System
Abstract
The PB/MC-CDMA(Partial Block Multi Carrier Code Division Multilple Access) system can improve the performance by reducing the ICI(Inter-Code Interference) between users. Also, this system can achieve the frequency diversity gain by avoiding ISI(Inter Symbol Interference). Therefore, the performance of PB/MC-CDMA system is better than that of conventional MC-CDMA(Multi Carrier Code Division Multiple Access) system. However, similarly to other multi-carrier systems, it still has a PAPR(Peak to Average Power Ratio) issue. In this paper, we propose a peak power reduction technique involving optimized spreading code selection without side information for the PB/MC-CDMA. The PB/MC-CDMA system in each block of units reuses the code so the extra code will be remained. This extra code is divided into several groups to calculate the PAPR and solving the PAPR problem by transferring the selected code which has minimum peak power.
