Relative Entropy based Message Combining for Exploiting Diversity in Information Optimized Processing

Authors: T. Monsees, D. W├╝bben, A. Dekorsy
Abstract:

Maximizing information has become a powerful technique for the design of efficient receiver components with very low bit-resolution. In the established information processing approach, the algorithmic tasks are executed on discrete messages and the processing steps are designed to optimize the mutual information. In this paper, we extend the concept of information optimized processing for exploiting diversity. To that end, we propose the Relative Entropy based Message Combining (REMC) approach in order to merge discrete messages with different underlying distributions, e.g., stemming from different diversity branches. We exemplary evaluate the proposed REMC for a single-user uplink-model with multiple Radio Access Points (RAPs) and higher order modulation schemes. The numerical results show that message combining is required to consider the reliability of different diversity branches that leverages diversity gains in an information optimized receiver.

Document type: Conference Paper
Publication: EURECOM, France, 10. - 12. November 2021
Conference: 25th International ITG Workshop on Smart Antennas (WSA 2021)
Files:
wsa2021_REMC
wsa2021_REMC.pdf353 KB
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Last change on 11.11.2021 by T. Monsees
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