To reduce the computational complexity, adaptive beamform vector and adaptive bit loading are designed separately. A modified sphere interpolation algorithm is used to reduce the feedback bits for large number of subcarrier.
为了降低计算复杂度,在接收端对波束矢量与比特加载实现分离自适应设计并反馈量化后的信息;对于子载波数比较大的情况,为了有效降低反馈比特数,利用了修正的球形插补算法;仿真验证了算法可以在低反馈比特下保证系统性能。
参考来源 - 非理想反馈下闭环MIMO系统的关键技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
An optimal multi-carrier bit loading algorithm was proposed based on the margin-maximum criterion.
提出了一种基于裕量最大的多载波最优比特分配算法。
For MQAM modulation, the optimized bit loading and power allocation were derived from a various-step greedy algorithm.
针对MQAM调制，采用变步长的贪婪算法得到优化的子信道比特加载及功率分配方案。
The performance can be improved more by using adaptive bit loading and power control to match the current channel state.
利用自适应技术，根据信道实际状态自适应比特装载和功率控制，可以进一步提高系统传输性能。
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