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Opportunistic Multi-Layer Transmission over Unknown Channels

Suresh, Ranjitha Gubbi ; Wilhelmsson, Leif R. LU ; Moloudi, Saeedeh LU and Lentmaier, Michael LU (2021) IEEE 93rd Vehicular Technology Conference 2021 In IEEE Vehicular Technology Conference 2021-April.
Abstract

We use the received bit information rate (RBIR) to analyze the performance of multi-layer transmission when combined with hybrid automatic repeat request (HARQ). The different layers are obtained from ordinary Gray-coded M-QAM and used for transmitting log2(M) codewords in parallel, exploiting that the different bits in Gray-coded M-QAM have very different reliability. The performance is analyzed when different layers are decoded in parallel (independently) as well as when successive decoding is used. In addition, we study how the RBIR can be used to select a suitable layer for a retransmission to further improve the performance. Simulation results based on a Wi-Fi like physical layer show that a significant gain compared to the... (More)

We use the received bit information rate (RBIR) to analyze the performance of multi-layer transmission when combined with hybrid automatic repeat request (HARQ). The different layers are obtained from ordinary Gray-coded M-QAM and used for transmitting log2(M) codewords in parallel, exploiting that the different bits in Gray-coded M-QAM have very different reliability. The performance is analyzed when different layers are decoded in parallel (independently) as well as when successive decoding is used. In addition, we study how the RBIR can be used to select a suitable layer for a retransmission to further improve the performance. Simulation results based on a Wi-Fi like physical layer show that a significant gain compared to the standard approach can be achieved by using basic multilayer transmission, and also that using successive decoding and carefully selecting what layer to use for retransmission can give further gains.

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Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
HARQ, hierarchical modulation, multi-layer transmission, RBIR, successive demodulation, Wi-Fi
host publication
2021 IEEE 93rd Vehicular Technology Conference, VTC 2021-Spring - Proceedings
series title
IEEE Vehicular Technology Conference
volume
2021-April
article number
9449033
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
conference name
IEEE 93rd Vehicular Technology Conference 2021
conference location
Helsinki, Finland
conference dates
2021-04-25 - 2021-04-28
external identifiers
  • scopus:85112458440
ISSN
1550-2252
ISBN
9781728189642
DOI
10.1109/VTC2021-Spring51267.2021.9449033
language
English
LU publication?
yes
id
745a66f5-0de2-406b-ac4a-3b6a8eb2abfc
date added to LUP
2021-09-20 15:28:35
date last changed
2022-05-05 03:47:28
@inproceedings{745a66f5-0de2-406b-ac4a-3b6a8eb2abfc,
  abstract     = {{<p>We use the received bit information rate (RBIR) to analyze the performance of multi-layer transmission when combined with hybrid automatic repeat request (HARQ). The different layers are obtained from ordinary Gray-coded M-QAM and used for transmitting log2(M) codewords in parallel, exploiting that the different bits in Gray-coded M-QAM have very different reliability. The performance is analyzed when different layers are decoded in parallel (independently) as well as when successive decoding is used. In addition, we study how the RBIR can be used to select a suitable layer for a retransmission to further improve the performance. Simulation results based on a Wi-Fi like physical layer show that a significant gain compared to the standard approach can be achieved by using basic multilayer transmission, and also that using successive decoding and carefully selecting what layer to use for retransmission can give further gains.</p>}},
  author       = {{Suresh, Ranjitha Gubbi and Wilhelmsson, Leif R. and Moloudi, Saeedeh and Lentmaier, Michael}},
  booktitle    = {{2021 IEEE 93rd Vehicular Technology Conference, VTC 2021-Spring - Proceedings}},
  isbn         = {{9781728189642}},
  issn         = {{1550-2252}},
  keywords     = {{HARQ; hierarchical modulation; multi-layer transmission; RBIR; successive demodulation; Wi-Fi}},
  language     = {{eng}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Vehicular Technology Conference}},
  title        = {{Opportunistic Multi-Layer Transmission over Unknown Channels}},
  url          = {{http://dx.doi.org/10.1109/VTC2021-Spring51267.2021.9449033}},
  doi          = {{10.1109/VTC2021-Spring51267.2021.9449033}},
  volume       = {{2021-April}},
  year         = {{2021}},
}