Paper Info
Title
Autonomous Grant-Free High Overloading Multiple Access Based On Conjugated Data Symbols
Abstract
This paper proposes a novel data-only transceiver targeting autonomous grant-free high overloading transmission under Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing waveform. At the transmitter side, key innovations include channel structure constituting conjugated data symbol pairs without reference signal overhead as well as collision-mitigating symbol level scrambling techniques. The receiver end contains key modules such as blind receive beam forming, blind sequence detection, blind Minimum Mean Square Error despreading as well as channel estimation modules leveraging the conjugated data symbol pairs. Additionally, a phase ambiguity issue related to channel estimation is discussed and resolved. Simulation results under Tapped Delay Line-C channel with realistic timing offset modelling show the proposed transceiver indeed achieves impressive overloading under autonomous grant free setting.
Year
DOI
Venue
2020
10.1109/ICCWorkshops49005.2020.9145341
2020 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS WORKSHOPS (ICC WORKSHOPS)
Keywords
DocType
ISSN
autonomous grant-free, high-overloading transmission, DFT-S-OFDM waveform, conjugated method, phase ambiguity
Conference
2164-7038
Citations 
PageRank 
References 
0
0.34
0
Authors
5
Name
Order
Citations
PageRank
Zhifeng Yuan1294.20
Yuzhou Hu212.38
Ma Yihua334.47
Weimin Li46325.40
Zhigang Li56615.47