This paper proposes non-orthogonal packet access based on low density signature with phase only adaptive precoding. The proposed access allows multiple user terminals to send their packets simultaneously for implementing massive connectivity, though only one antenna is put on every terminal and on an access point. This paper proposes a criterion that defines the optimum rotation angles for the phase only precoding, and an algorithm based on the steepest descent to approach the optimum rotation angles. Moreover, this paper proposes two complexity-reduced algorithms that converge much faster than the original algorithm. When 6 packets are transmitted in 4 time slots, i.e., overloading ratio of 1.5, the proposed adaptive precoding based on all the proposed algorithms attains a gain of about 4dB at the BER of 10-4 in Rician fading channels.
Satoshi DENNO
Okayama University
Ryoko SASAKI
Okayama University
Yafei HOU
Okayama University
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Satoshi DENNO, Ryoko SASAKI, Yafei HOU, "Non-Orthogonal Packet Access Based on Low Density Signature With Phase Only Adaptive Precoding" in IEICE TRANSACTIONS on Communications,
vol. E104-B, no. 3, pp. 328-337, March 2021, doi: 10.1587/transcom.2020EBP3066.
Abstract: This paper proposes non-orthogonal packet access based on low density signature with phase only adaptive precoding. The proposed access allows multiple user terminals to send their packets simultaneously for implementing massive connectivity, though only one antenna is put on every terminal and on an access point. This paper proposes a criterion that defines the optimum rotation angles for the phase only precoding, and an algorithm based on the steepest descent to approach the optimum rotation angles. Moreover, this paper proposes two complexity-reduced algorithms that converge much faster than the original algorithm. When 6 packets are transmitted in 4 time slots, i.e., overloading ratio of 1.5, the proposed adaptive precoding based on all the proposed algorithms attains a gain of about 4dB at the BER of 10-4 in Rician fading channels.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2020EBP3066/_p
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@ARTICLE{e104-b_3_328,
author={Satoshi DENNO, Ryoko SASAKI, Yafei HOU, },
journal={IEICE TRANSACTIONS on Communications},
title={Non-Orthogonal Packet Access Based on Low Density Signature With Phase Only Adaptive Precoding},
year={2021},
volume={E104-B},
number={3},
pages={328-337},
abstract={This paper proposes non-orthogonal packet access based on low density signature with phase only adaptive precoding. The proposed access allows multiple user terminals to send their packets simultaneously for implementing massive connectivity, though only one antenna is put on every terminal and on an access point. This paper proposes a criterion that defines the optimum rotation angles for the phase only precoding, and an algorithm based on the steepest descent to approach the optimum rotation angles. Moreover, this paper proposes two complexity-reduced algorithms that converge much faster than the original algorithm. When 6 packets are transmitted in 4 time slots, i.e., overloading ratio of 1.5, the proposed adaptive precoding based on all the proposed algorithms attains a gain of about 4dB at the BER of 10-4 in Rician fading channels.},
keywords={},
doi={10.1587/transcom.2020EBP3066},
ISSN={1745-1345},
month={March},}
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TY - JOUR
TI - Non-Orthogonal Packet Access Based on Low Density Signature With Phase Only Adaptive Precoding
T2 - IEICE TRANSACTIONS on Communications
SP - 328
EP - 337
AU - Satoshi DENNO
AU - Ryoko SASAKI
AU - Yafei HOU
PY - 2021
DO - 10.1587/transcom.2020EBP3066
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E104-B
IS - 3
JA - IEICE TRANSACTIONS on Communications
Y1 - March 2021
AB - This paper proposes non-orthogonal packet access based on low density signature with phase only adaptive precoding. The proposed access allows multiple user terminals to send their packets simultaneously for implementing massive connectivity, though only one antenna is put on every terminal and on an access point. This paper proposes a criterion that defines the optimum rotation angles for the phase only precoding, and an algorithm based on the steepest descent to approach the optimum rotation angles. Moreover, this paper proposes two complexity-reduced algorithms that converge much faster than the original algorithm. When 6 packets are transmitted in 4 time slots, i.e., overloading ratio of 1.5, the proposed adaptive precoding based on all the proposed algorithms attains a gain of about 4dB at the BER of 10-4 in Rician fading channels.
ER -