TY - GEN
T1 - Achievable Second-Order Asymptotics for Additive Non-Gaussian MAC and RAC
AU - Wang, Yiming
AU - Zhou, Lin
AU - Bai, Lin
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - We derive a second-order achievability bound for the two-user multiple access channel with additive non-Gaussian noise. In our setting, both users use spherical codebooks and the decoder uses the nearest neighbor decoding. Our result generalizes the dispersion analysis for point-to-point mismatched channel coding by Scarlett, Tan and Durisi (TIT 2017) to the multiple user setting. When specialized to the Gaussian noise, our proof provides an alternative second-order achievability analysis of MolavianJazi and Laneman (TIT, 2015). Furthermore, we generalize our results to the random access channel with additive non-Gaussian noise, where the number of active users in each time slot are unknown, and derive a second-order achievability bound. When specialized to the Gaussian noise, our second-order asymptotic results are consistent with the Gaussian noise case recently derived by Yavas, Kostina and Effros (TIT, 2021).
AB - We derive a second-order achievability bound for the two-user multiple access channel with additive non-Gaussian noise. In our setting, both users use spherical codebooks and the decoder uses the nearest neighbor decoding. Our result generalizes the dispersion analysis for point-to-point mismatched channel coding by Scarlett, Tan and Durisi (TIT 2017) to the multiple user setting. When specialized to the Gaussian noise, our proof provides an alternative second-order achievability analysis of MolavianJazi and Laneman (TIT, 2015). Furthermore, we generalize our results to the random access channel with additive non-Gaussian noise, where the number of active users in each time slot are unknown, and derive a second-order achievability bound. When specialized to the Gaussian noise, our second-order asymptotic results are consistent with the Gaussian noise case recently derived by Yavas, Kostina and Effros (TIT, 2021).
KW - Multiple access channel
KW - finite blocklength analysis
KW - mismatch communication
KW - random access channel
KW - second-order asymptotics
UR - https://www.scopus.com/pages/publications/85187333610
U2 - 10.1109/GLOBECOM54140.2023.10436789
DO - 10.1109/GLOBECOM54140.2023.10436789
M3 - 会议稿件
AN - SCOPUS:85187333610
T3 - Proceedings - IEEE Global Communications Conference, GLOBECOM
SP - 3627
EP - 3632
BT - GLOBECOM 2023 - 2023 IEEE Global Communications Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 IEEE Global Communications Conference, GLOBECOM 2023
Y2 - 4 December 2023 through 8 December 2023
ER -