4 papers · 1 filter
Advanced Codebook Design for SCMA-aided NTNs With Randomly Distributed Users
Tianyang Hu, Qu Luo, Lixia Xiao +3
In this letter, a novel class of sparse codebooks is proposed for sparse code multiple access (SCMA) aided non-terrestrial networks (NTN) with randomly distributed users characteri…
BEM-Assisted Low-Complexity Channel Estimation for AFDM Systems over Doubly Selective Channels
Limin Liu, Zhe Li, Qihao Peng +3
In this paper, we propose a low-complexity channel estimation scheme of affine frequency division multiplexing (AFDM) based on generalized complex exponential basis expansion model…
Single Sparse Graph Enhanced Expectation Propagation Algorithm Design for Uplink MIMO-SCMA
Qu Luo, Jing Zhu, Gaojie Chen +2
Sparse code multiple access (SCMA) and multiple input multiple output (MIMO) are considered as two efficient techniques to provide both massive connectivity and high spectrum effic…
Phase Noise Resilient Codebook Design for Sparse Code Multiple Access
Haibo Liu, Qu Luo, Zilong Liu +3
Sparse code multiple access (SCMA) is a promising technique for future machine type communication systems due to its superior spectral efficiency and capability for supporting mass…