Opportunistic Multi-Layer Transmission over Unknown Channels
(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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- author
- Suresh, Ranjitha Gubbi ; Wilhelmsson, Leif R. LU ; Moloudi, Saeedeh LU and Lentmaier, Michael LU
- organization
- publishing date
- 2021
- 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}}, }