【摘要】 提出了一种在边际自适应(MA)准则下,子载波分配、自适应调制、比特加载、成型滤波联合优化的设计算法,且通过对反馈信道的瑞利衰落模型假设,引入反馈系数的概念以对抗反馈信道误差造成的性能损失.仿真结果表明,提出的联合优化的自适应资源分配方案较之固定分配方案提升性能3dB,并能减轻反馈信道误差带来的性能损失2~3dB.更多还原

【Abstract】 A transmission scheme as a concatenation of dynamic sub-carriers and bit assignment, self-adaptive modulation and beam-forming was proposed. By use of Rayleigh fading model assumption, a new concept—the channel feedback coefficient was introduced, so as to compensate the error inducted by feedback channel. Simulation results show that the proposed resource allocation scheme outperforms the multi-user MIMO-OFDM with static allocation technique by 3dB, and could lessen the performance loss from channel state information feedback error by 2～3dB.更多还原