摘要
Coordinated multipoint(CoM P)transmission and reception is a technique to reduce intercell interference and increase the cell edge throughput.In order to get maximum CoM P gain the networks and terminals involved in CoM P communication should be robust against time and frequency offset due to asynchronism between terminals and base stations.However,the modulation techniques proposed in LTE-Advanced standard(SC-FDMA and OFDMA)are quite sensitive to frequency offset because of DFT/IDFT used in the modulation systems,which brings difficulties for commercial implementation of CoM P technique based on LTE-Advanced.To relax the synchronization requirement in CoM P system,in this paper we introduce a CoM P technique based on a new multicarrier modulation scheme-multicarrier time division multiple access(MC-TDMA).In comparison with SC-FDMA and OFDMA,the MC-TDMA modulation can significantly improve the CoM P performance in case of carrier frequency offset.Simulation shows that at 20%of carrier frequency offset the CoM P system with MC-TDMA modulation can also keep high performance,while the system with SC-FDMA and OFDMA is totally lost in work.
Coordinated muhipoint （CoMP） transmission and reception is a technique to reduce intercell interference and increase the cell edge throughput. In order to get maximum CoMP gain the networks and terminals involved in CoMP com- munication should be robust against time and frequency offset due to asynchronism between terminals and base stations. However, the modulation techniques proposed in LTE-Advanced standard （SC-FDMA and OFDMA） are quite sensitive to frequency offset because of DFT/IDFT used in the modulation systems, which brings difficulties for commercial implementa- tion of CoMP technique based on LTE-Advanced. To relax the synchronization requirement in CoMP system, in this paper we introduce a CoMP technique based on a new multicarrier modulation scheme-multicarrier time division multiple access （MC-TDMA）. In comparison with SC-FDMA and OFDMA, the MC-TDMA modulation can significantly improve the CoMP performance in case of carrier frequency offset. Simulation shows that at 20% of carrier frequency offset the CoMP system with MC-TDMA modulation can also keep high performance, while the system with SC-FDMA and OFDMA is totally lost in work.
出处
《重庆邮电大学学报（自然科学版）》
CSCD
北大核心
2015年第4期466-476,共11页
Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)
关键词
通信
电信
信号处理
电声技术
coordinated multipoint （CoMP） transmission and reception
multicarrier modulation
carrier offset
frequencysynchronization
