Abstract
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.
Original language | English |
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Title of host publication | Proceedings of 2019 25th Asia-Pacific Conference on Communications, APCC 2019 |
Editors | Vo Nguyen Quoc Bao, Tran Thien Thanh |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 347-351 |
Number of pages | 5 |
ISBN (Electronic) | 9781728136790 |
DOIs | |
Publication status | Published - 2019 Nov |
Event | 25th Asia-Pacific Conference on Communications, APCC 2019 - Ho Chi Minh City, Viet Nam Duration: 2019 Nov 6 → 2019 Nov 8 |
Publication series
Name | Proceedings of 2019 25th Asia-Pacific Conference on Communications, APCC 2019 |
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Conference
Conference | 25th Asia-Pacific Conference on Communications, APCC 2019 |
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Country/Territory | Viet Nam |
City | Ho Chi Minh City |
Period | 19/11/6 → 19/11/8 |
Bibliographical note
Funding Information:ACKNOWLEDGMENT This work was supported in part by Samsung Research in Samsung Electronics
Funding Information:
This work was supported in part by Samsung Research in Samsung Electronics
Publisher Copyright:
© 2019 IEEE.
Keywords
- Constructive interference gain
- Constructive interference optimization (CIO)
- Imperfect channel state information (CSI)
- Multi-user MISO system
- Symbol-level precoding
ASJC Scopus subject areas
- Computer Networks and Communications
- Hardware and Architecture
- Information Systems and Management
- Safety, Risk, Reliability and Quality
- Control and Optimization