3 papers
cs.IT2025
Capacity Region for Covert Secret Key Generation over Multiple Access Channels
Yingxin Zhang, Lin Zhou, Qiaosheng Zhang
We study covert secret key generation over a binary-input two-user multiple access channel with one-way public discussion and derive bounds on the capacity region. Specifically, in…
cs.IT2024
The Dispersion of Broadcast Channels With Degraded Message Sets Using Gaussian Codebooks
Zhuangfei Wu, Lin Bai, Jinpeng Xu +2
We study the two-user broadcast channel with degraded message sets and derive second-order achievability rate regions. Specifically, the channel noises are not necessarily Gaussian…
cs.IT2024
Achievable Second-Order Asymptotics for MAC and RAC with Additive Non-Gaussian Noise
Yiming Wang, Lin Bai, Zhuangfei Wu +1
We first study the two-user additive noise multiple access channel (MAC) where the noise distribution is arbitrary. For such a MAC, we use spherical codebooks and either joint near…