Journal
IEEE WIRELESS COMMUNICATIONS LETTERS
Volume 10, Issue 1, Pages 48-52Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LWC.2020.3020122
Keywords
URLLC; SIMO; modulation division; noncoherent detection
Categories
Funding
- Science and Technology Development Project of Henan Province [202102210123]
- Fundamental Research Funds of Shandong University [61170079614095]
- National Natural Science Foundation of China [61901245]
- Natural Sciences and Engineering Research Council of Canada
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In this letter, an ultra-reliable low-latency communication (URLLC) scheme for one uplink massive single-input multiple-output (SIMO) system with three users is considered. A new multiuser space-time modulation scheme is devised for all users to update status information to the base station (BS) concurrently with extremely low latency. Additionally, a noncoherent maximum likelihood (ML) receiver is investigated for the receiver side to detect all signals of different users simultaneously with high reliability and low latency when the antenna array size is scaled up. Extensive computer simulations are carried out to validate the proposed design's effectiveness in the case of a large antenna array size.
In this letter, we consider an ultra-reliable low-latency communication (URLLC) scheme for one uplink massive single-input multiple-output (SIMO) system with three users. In our design, to enable all the users to update status information to the base station (BS) concurrently with an extremely low latency, we specifically decompose a cross 8-QAM constellation into one additive uniquely decomposable constellation group (AUDCG), and then devise a new multiuser space-time modulation scheme at the transmitters accordingly. For the receiver side, to assure that the BS can detect all the transmitted signals of different users simultaneously with a high reliability and a low latency, we investigate a noncoherent maximum likelihood (ML) receiver in comparison to a minimum Riemannian distance (MRD) estimator and a minimum Euclidean distance (MED) detector when the antenna array size is scaled up. Finally, extensive computer simulations are carried out to validate the effectiveness of our proposed design when the antenna array size is large.
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