小区间子载波借用的OFDMA系统设计与分析

his paper designs an OFDMA system based on sub-carrier borrowing between cells, which can dynamically adjust sub-carrier resource between cells according to effective portfolio, to maximize the resource utilization. By modeling and theoretically analyzing on queuing theory and Markov Chain, users’ blocking probabilities in non sub-carrier borrowing (NSCB) and sub-carrier borrowing between cells (SCBBC) based OFDMA systems are obtained respectively. With numerically simulation and contrastively analysis, it can be found that blocking probability in SCBBC-OFDMA system is obviously lower than the one in NSCB-OFDMA system.