2 papers
cs.IT2022
K-Means Based Constellation Optimization for Index Modulated Reconfigurable Intelligent Surfaces
Hao Liu, Jiancheng An, Wangyang Xu +3
Reconfigurable intelligent surface (RIS) has recently emerged as a promising technology enabling next-generation wireless networks. In this letter, we develop an improved index mod…
cs.IT2020
Transmitting Extra Bits by Rotating Signal Constellations
Jiachen Sun, Hao Liu, Xiao Ma
In this letter, we propose a novel LDPC coding scheme to transmit extra bits aided by rotated signal constellations without any additional cost in transmission power or bandwidth.…