Flexible Adaptive-Modulation-and-Coding Tables for a Wireless Network

This paper proposes to use flexible adaptive- modulation-and-coding (AMC) tables in a wireless network. To support the flexibility of AMC tables, a low-complexity AMC table optimization algorithm is also proposed. The proposed algorithm iteratively optimizes the switching levels of an AMC table according to channel environments, and has fast convergence speed. Computer simulation results show that the proposed algorithm optimizes AMC tables according to different cell characteristics, and that using flexible AMC tables for a wireless network achieves near-optimal average spectral efficiency even with a small feedback load.