TY - GEN
T1 - Compressed Error HARQ
T2 - 2023 IEEE International Symposium on Information Theory, ISIT 2023
AU - Ankireddy, Sravan Kumar
AU - Hebbar, S. Ashwin
AU - Jiang, Yihan
AU - Viswanath, Pramod
AU - Kim, Hyeji
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - In modern communication systems with feedback, there are increasingly more scenarios where the transmitter has much less power than the receiver (e.g., medical implant devices), which we refer to as noise-asymmetric channels. For such channels, the feedback link is of higher quality than the forward link. However, feedback schemes for cellular communications, such as hybrid ARQ, do not fully utilize the high-quality feedback link. To this end, we introduce Compressed Error Hybrid ARQ, a generalization of hybrid ARQ tailored for noise-asymmetric channels; the receiver sends its estimated message to the transmitter, and the transmitter harmoniously switches between hybrid ARQ and compressed error retransmission. We show that our proposed method significantly improves reliability, latency, and spectral efficiency compared to the conventional hybrid ARQ in various practical scenarios where the transmitter is resource-constrained.
AB - In modern communication systems with feedback, there are increasingly more scenarios where the transmitter has much less power than the receiver (e.g., medical implant devices), which we refer to as noise-asymmetric channels. For such channels, the feedback link is of higher quality than the forward link. However, feedback schemes for cellular communications, such as hybrid ARQ, do not fully utilize the high-quality feedback link. To this end, we introduce Compressed Error Hybrid ARQ, a generalization of hybrid ARQ tailored for noise-asymmetric channels; the receiver sends its estimated message to the transmitter, and the transmitter harmoniously switches between hybrid ARQ and compressed error retransmission. We show that our proposed method significantly improves reliability, latency, and spectral efficiency compared to the conventional hybrid ARQ in various practical scenarios where the transmitter is resource-constrained.
UR - http://www.scopus.com/inward/record.url?scp=85171456672&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85171456672&partnerID=8YFLogxK
U2 - 10.1109/ISIT54713.2023.10206766
DO - 10.1109/ISIT54713.2023.10206766
M3 - Conference contribution
AN - SCOPUS:85171456672
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 1160
EP - 1165
BT - 2023 IEEE International Symposium on Information Theory, ISIT 2023
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 25 June 2023 through 30 June 2023
ER -