Performance Analysis of OFDM Frequency Hopping System Based on Resource Planning
Wenbo Wang · Beijing Youdian Xueyuan xuebao · 2006
The downlink performance of orthogonal frequency division multiplexing(OFDM) fre-(quency) hopping system with time-frequency mapping patterns derived from Costas sequence was analyzed in a multi-cell multi-user scenario.Through the comparison of frequency hopping system and non frequency hopping system using system level simulations,the frequency hopping solution is proved to be effective against inter-cell interference.To mitigate inter-cell interference further,a new resource planning scheme based on reuse partition was proposed,it is suitable for frequency hopping.This scheme provides interference avoidance by allocating a different prior slot for each cell.The resource in the non-prior slots also can be used due to the interference average induced by frequency hopping.It is demonstrated by simulation results that the proposed scheme will be able to mitigate inter-cell(interference) further when the system load is under a certain value.