【作者】 周文安； 李真； 诸葛卿； 宋俊德；

【Author】 ZHOU Wen-an, LI Zhen, ZHUGE Qing, SONG Jun-de (Electronic Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876,China)

【机构】 北京邮电大学电子工程学院；

【摘要】 在研究单小区多用户OFDM(正交频分复用)系统中最佳或次最佳的子载波比特功率分配算法基础上,提出了一种在满足所有用户QoS(服务质量)要求下多小区多用户OFDM-TDMA(正交频分复用-时分多址)系统的,以最大化系统吞吐量为目的的最佳功率比特分配算法．通过仿真验证,此算法在确保QoS条件下,能够最大化系统吞吐量并减轻同频干扰的影响．更多还原

【Abstract】 Based on the intensive research on the optimal and sub-optimal sub-carrier, bit, power loading algorithms developed in multi-user and single-cell OFDM (orthogonal frequency division multiplexing) systems, the performance of multi-cell and multi-user OFDM-TDMA(time division multiple access) system is studied in this paper. And a dynamic sub-carrier, bit and power allocation algorithm is applied to the system to maximize the system throughput, to mitigate the effect of CCI(co-channel interference) and to satisfy the required quality of service. The simulation results show that the algorithm is more efficient than the equal power allocation algorithms.更多还原