TY - JOUR
T1 - Bit-Flipping Helper-Assisted Lossy Communications
T2 - Performance Analyses Over Fading Multiple Access Channels
AU - Lin, Wensheng
AU - Zribi, Amin
AU - Asvadi, Reza
AU - Dupraz, Elsa
AU - Li, Lixin
AU - Matsumoto, Tad
N1 - Publisher Copyright:
© 2001-2012 IEEE.
PY - 2024
Y1 - 2024
N2 - The primary objective of this article is to establish an analytical framework for evaluating the rate-distortion and the outage probability performance in Internet-of-Things (IoT) systems based on lossy cooperative wireless communications. Two correlated sources transmit information through fading multiple access channels (MACs) with the assistance of a bit-flipping (BF) helper. To begin with, we derive a closed-form expression of the inner bound on the achievable rate-distortion region. To reduce computational complexity, we then propose an approximate method for calculating the outage probability based on the lossy source-channel separation theorem. Moreover, Monte-Carlo methods are adopted to evaluate the outage probability in MAC and orthogonal transmission schemes. Theoretically, approximate results are also compared with the exact results obtained by Monte-Carlo methods. It is shown that the gap between the approximate and exact performance curves decreases as the distortion requirement becomes smaller. Especially when the distortion requirement reduces to zero, the approximated outage probability is exactly the same as the results obtained by Monte-Carlo methods. In addition, we also present performance comparisons in terms of the outage probability between Rayleigh and Nakagami-m fading, and between BF helper and optimal helper.
AB - The primary objective of this article is to establish an analytical framework for evaluating the rate-distortion and the outage probability performance in Internet-of-Things (IoT) systems based on lossy cooperative wireless communications. Two correlated sources transmit information through fading multiple access channels (MACs) with the assistance of a bit-flipping (BF) helper. To begin with, we derive a closed-form expression of the inner bound on the achievable rate-distortion region. To reduce computational complexity, we then propose an approximate method for calculating the outage probability based on the lossy source-channel separation theorem. Moreover, Monte-Carlo methods are adopted to evaluate the outage probability in MAC and orthogonal transmission schemes. Theoretically, approximate results are also compared with the exact results obtained by Monte-Carlo methods. It is shown that the gap between the approximate and exact performance curves decreases as the distortion requirement becomes smaller. Especially when the distortion requirement reduces to zero, the approximated outage probability is exactly the same as the results obtained by Monte-Carlo methods. In addition, we also present performance comparisons in terms of the outage probability between Rayleigh and Nakagami-m fading, and between BF helper and optimal helper.
KW - Cooperative lossy communications
KW - multiple access channels (MACs)
KW - outage probability
KW - rate-distortion
KW - wireless sensor networks (WSN)
UR - http://www.scopus.com/inward/record.url?scp=85195403568&partnerID=8YFLogxK
U2 - 10.1109/JSEN.2024.3407480
DO - 10.1109/JSEN.2024.3407480
M3 - 文章
AN - SCOPUS:85195403568
SN - 1530-437X
VL - 24
SP - 23045
EP - 23061
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
IS - 14
ER -