论文标题
5G上行链路频道的功率密度偏移的实用链路适应算法
Practical Link Adaptation Algorithm with Power Density Offsets for 5G Uplink Channels
论文作者
论文摘要
这封信提出了一种务实的链路适应算法，考虑到下一代上行无线无线通道的功率密度偏移（PDO）。所提出的算法包括物理上行链路共享通道之间的PDO计算及其相关的参考信号，关键通道状态度量的生成以及对PDO的调制和编码方案（MCS）的适应。根据多个参考PDO点，将缩放量表应用于估计的通道矩阵，以生成相应的参考互信息（MI）值，然后进行插值或外推以获得适应的MI并最终获得MCS。所提出的算法在硬件实现方面具有较低的复杂性，同时产生了令人满意的块错误率和广泛的PDO范围的吞吐量，如仿真结果所示。
This letter proposes a pragmatic link adaptation algorithm considering power density offsets (PDOs) for next-generation uplink wireless channels. The proposed algorithm consists of PDO calculation between a physical uplink shared channel and its associated sounding reference signal, key channel state metric generation, and modulation and coding scheme (MCS) adaptation with respect to the PDO. Scaling is applied to estimated channel matrices based on multiple reference PDO points to generate corresponding reference mutual information (MI) values, followed by interpolation or extrapolation to obtain the adapted MI and ultimately MCS. The proposed algorithm has low complexity in terms of hardware implementation, while yielding satisfactory block error rates and throughput for a wide range of PDOs as shown by simulation results.
