SUB-CARRIER ALLOCATION COMBINED WITH COORDINATED MULTI-POINT TRANSMISSION IN MULTI-CELL OFDMA SYSTEM
In this paper, we proposed a heuristic algorithm to investigate the performance of resource allocation combined with coordinated multipoint(CoMP) in multi-cell OFDMA systems. We first develop an analytical model of resource allocation for an arbitrary number of users in the different cells, and formulate it into an optimization problem that is proved to be NP-complete. To reduce the computational complexity, we then design an algorithm consisted of three steps to approximately resolve the optimization problem. Simulation results show that the system with downlink CoMP transmission can obtain better performance than the conventional system, while satisfying the proportional fairness requirement of users. Furthermore, we found that the system performance greatly depends on the parameterα which is used to distinguish between CoMP user and center user.
OFDMA resource allocation CoMP
Xingkun Xu Tao Qiu Wenjun Xu Zhiqiang He Kai Niu
Key Lab of Universal Wireless Communications, Ministry of Education Beijing University of Posts and Telecommunications
国际会议
北京
英文
842-846
2009-11-06（万方平台首次上网日期，不代表论文的发表时间）