7 papers · 1 filter
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…
Oversampled Low Ambiguity Zone Sequences for Channel Estimation over Doubly Selective Channels
Zhi Gu, Zhengchun Zhou, Pingzhi Fan +2
Pilot sequence design over doubly selective channels (DSC) is challenging due to the variations in both the time- and frequency-domains. Against this background, the contribution o…
A Computer Search of New OBZCPs of Lengths up to 49
Peter Kazakov, Zilong Liu
This paper aims to search for new optimal and sub-optimal Odd Binary Z-Complimentary Pairs (OBZCPs) for lengths up to 49. As an alternative to the celebrated binary Golay complemen…
Asymptotically Optimal Sequence Sets With Low/Zero Ambiguity Zone Properties
Liying Tian, Xiaoshi Song, Zilong Liu +1
Sequences with low/zero ambiguity zone (LAZ/ZAZ) properties are useful in modern communication and radar systems operating over mobile environments. This paper first presents a new…
BER Analysis of SCMA-OFDM Systems in the Presence of Carrier Frequency Offset
Haibo Liu, Qu Luo, Zilong Liu +3
Sparse code multiple access (SCMA) building upon orthogonal frequency division multiplexing (OFDM) is a promising wireless technology for supporting massive connectivity in future…
AFDM-SCMA: A Promising Waveform for Massive Connectivity over High Mobility Channels
Qu Luo, Pei Xiao, Zilong Liu +4
This paper studies the affine frequency division multiplexing (AFDM)-empowered sparse code multiple access (SCMA) system, referred to as AFDM-SCMA, for supporting massive connectiv…
Novel Power-Imbalanced Dense Codebooks for Reliable Multiplexing in Nakagami Channels
Yiming Gui, Zilong Liu, Lisu Yu +2
This paper studies enhanced dense code multiple access (DCMA) system design for downlink transmission over the Nakagami- fading channels. By studying the DCMA pairwise error pro…