학술논문

Copula-Based Bounds for Multi-User Communications–Part I: Average Performance
Document Type
Periodical
Source
IEEE Communications Letters IEEE Commun. Lett. Communications Letters, IEEE. 25(1):3-7 Jan, 2021
Subject
Communication, Networking and Broadcast Technologies
Fading channels
Random variables
Receiving antennas
Wireless communication
Transmitters
Measurement
Network reliability
joint distributions
fading channels
ergodic performance
fast fading
Language
ISSN
1089-7798
1558-2558
2373-7891
Abstract
Statistically independent or positively correlated fading models are usually applied to compute the average performance of wireless communications. However, there exist scenarios with negative dependency and it is therefore of interest how different performance metrics behave for different general dependency structures of the channels. Especially best-case and worst-case bounds are practically relevant as a system design guideline. In this two-part letter, we present methods and tools from dependency modeling which can be applied to analyze and design multi-user communications systems exploiting and creating dependencies of the effective fading channels. The first part focuses on fast fading with average performance metrics, while the second part considers slow fading with outage performance metrics.