TY - GEN
T1 - A Scalable LDPC Coding Scheme for Adaptive HARQ Techniques
AU - Madeira, João
AU - Viana, Joseanne
AU - Guerreiro, João
AU - Dinis, Rui
N1 - info:eu-repo/grantAgreement/FCT/OE/UI%2FBD%2F150877%2F2021/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50008%2F2020/PT#
info:eu-repo/grantAgreement/EC/H2020/813391/EU#
This work was supported by the FCT - MASSIVE5G (SAICT-45-2017-02), as well as DAIS, which received funding from the Electronic Component Systems for European Leadership Joint Undertaking (ECSEL-JU) under Grant agreement number 101007273.
PY - 2022/6
Y1 - 2022/6
N2 - In wireless communication systems, the achievable data rates are always dependent on the characteristics of the wireless channel. Although a system is designed for an expected channel link quality, the channel may deteriorate for certain periods of time due to the changing nature of the propagation environment. A weak channel may lead to transmission errors, which can be corrected by employing Hybrid Automatic Repeat Requests (HARQ). In particular, type II HARQ protocols have become an appealing option since they only involve the transmission of additional parity bits, instead of repeating the original transmission. These additional parity bits can be obtained by puncturing a low rate channel code. However, finding an optimum pattern of puncturing for a specific code is non-trivial. In this work, we propose a retransmission scheme that considers various Low-Density Parity-Check (LDPC) codes of different rates that can be concatenated to perform the encoding and decoding operations, resulting in a lower encoding overhead for successful transmissions, while maintaining efficient decoding. We show that this technique can maintain high throughput and goodput, and a low outage probability, even when the received signal power is suddenly reduced due to the loss of the Line-of-sight (LOS) component.
AB - In wireless communication systems, the achievable data rates are always dependent on the characteristics of the wireless channel. Although a system is designed for an expected channel link quality, the channel may deteriorate for certain periods of time due to the changing nature of the propagation environment. A weak channel may lead to transmission errors, which can be corrected by employing Hybrid Automatic Repeat Requests (HARQ). In particular, type II HARQ protocols have become an appealing option since they only involve the transmission of additional parity bits, instead of repeating the original transmission. These additional parity bits can be obtained by puncturing a low rate channel code. However, finding an optimum pattern of puncturing for a specific code is non-trivial. In this work, we propose a retransmission scheme that considers various Low-Density Parity-Check (LDPC) codes of different rates that can be concatenated to perform the encoding and decoding operations, resulting in a lower encoding overhead for successful transmissions, while maintaining efficient decoding. We show that this technique can maintain high throughput and goodput, and a low outage probability, even when the received signal power is suddenly reduced due to the loss of the Line-of-sight (LOS) component.
KW - Hybrid Automatic Repeat Request (HARQ)
KW - Low Density Parity Check Code (LDPC)
KW - Multi-Input Multi-Output (MIMO)
KW - Orthogonal Frequency Division Multiplexing (OFDM)
UR - http://www.scopus.com/inward/record.url?scp=85137821590&partnerID=8YFLogxK
U2 - 10.1109/vtc2022-spring54318.2022.9860855
DO - 10.1109/vtc2022-spring54318.2022.9860855
M3 - Conference contribution
SN - 978-1-6654-8243-1
T3 - IEEE Conference on Vehicular Technology (VTC)
BT - 2022 IEEE 95th Vehicular Technology Conference
PB - Institute of Electrical and Electronics Engineers (IEEE)
CY - New Jersey
T2 - IEEE 95th Vehicular Technology Conference
Y2 - 19 June 2022 through 22 June 2022
ER -