Capacity Analysis in Relay-assisted OFDM Systems Based on the Random Geometry Theory
Fu Ya-ru Zhu Qi
Jiangsu Province Key Laboratory of Wireless Communications, Key Laboratory on Wideband Wireless Communications and Sensor Network Technology of Ministry of Education, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
Abstract：This paper applies the random geometry theory to Decode-and-Forward (DF) relay-enhanced Orthogonal Frequency Division Multiplexing (OFDM) system and derives a new system capacity model finally. There are some assumptions that multiple users distribute uniformly in a ring region around Base Station (BS) and frequency is reused existing among users in access zone. By using the upper bound of interfere integral value to alternate the actual interfere value when considering the co-channel interference, the closed expression of system capacity is obtained under the power constraints of BS and relay nodes. Simulation results show the validity of the system capacity model.
付雅茹, 朱琦. 基于随机几何理论的中继OFDM系统容量分析[J]. 电子与信息学报, 2013, 35(10): 2354-2358.
Fu Ya-Ru, Zhu Qi. Capacity Analysis in Relay-assisted OFDM Systems Based on the Random Geometry Theory. , 2013, 35(10): 2354-2358.
2013, Vol. 35 
