TY - GEN
T1 - Performance of MMSE-based symbol-level precoding in multi-user MISO system
AU - Lee, Jae Won
AU - Kang, Chung G.
N1 - Funding Information:
ACKNOWLEDGMENT This work was supported in part by Samsung Research in Samsung Electronics
Publisher Copyright:
© 2019 IEEE.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2019/11
Y1 - 2019/11
N2 - The data-aided symbol-level precoding scheme has been known as a useful means of improving the system efficiency in multi-user MISO system. Even if it was mostly evaluated under the condition of an ideal channel state information (CSI), it is conjectured that its performance is critically governed by imperfect received CSI (CSIR). Furthermore, as the downlink channel can be estimated only in a block level, i.e., without tracking an effective channel on each symbol, its performance would be more seriously degraded by symbol-by-symbol channel variation. Meanwhile, we also investigate a channel coding gain for symbol-level preceding, which is not clear when the minimum distance between received signals can be increased by a nature of cumulative constructive interference gain (CCIG). The objective of this paper is to provide a complete performance comparison between the conventional block-level precoding and symbol-level precoding schemes under more realistic system assumptions.
AB - The data-aided symbol-level precoding scheme has been known as a useful means of improving the system efficiency in multi-user MISO system. Even if it was mostly evaluated under the condition of an ideal channel state information (CSI), it is conjectured that its performance is critically governed by imperfect received CSI (CSIR). Furthermore, as the downlink channel can be estimated only in a block level, i.e., without tracking an effective channel on each symbol, its performance would be more seriously degraded by symbol-by-symbol channel variation. Meanwhile, we also investigate a channel coding gain for symbol-level preceding, which is not clear when the minimum distance between received signals can be increased by a nature of cumulative constructive interference gain (CCIG). The objective of this paper is to provide a complete performance comparison between the conventional block-level precoding and symbol-level precoding schemes under more realistic system assumptions.
KW - Constructive interference gain
KW - Constructive interference optimization (CIO)
KW - Imperfect channel state information (CSI)
KW - Multi-user MISO system
KW - Symbol-level precoding
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U2 - 10.1109/APCC47188.2019.9026454
DO - 10.1109/APCC47188.2019.9026454
M3 - Conference contribution
AN - SCOPUS:85082966980
T3 - Proceedings of 2019 25th Asia-Pacific Conference on Communications, APCC 2019
SP - 347
EP - 351
BT - Proceedings of 2019 25th Asia-Pacific Conference on Communications, APCC 2019
A2 - Bao, Vo Nguyen Quoc
A2 - Thanh, Tran Thien
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 25th Asia-Pacific Conference on Communications, APCC 2019
Y2 - 6 November 2019 through 8 November 2019
ER -