@inproceedings{72ce2591f34d4d228663e83d2ad8d71d,
title = "A rate-splitting strategy for max-min fair multigroup multicasting",
abstract = "We consider the problem of transmit beamforming to multiple cochannel multicast groups. The conventional approach is to beamform a designated data stream to each group, while treating potential inter-group interference as noise at the receivers. In overloaded systems where the number of transmit antennas is insufficient to perform interference nulling, we show that inter-group interference dominates at high SNRs, leading to a saturating max-min fair performance. We propose a rather unconventional approach to cope with this issue based on the concept of Rate-Splitting (RS). In particular, part of the interference is broadcasted to all groups such that it is decoded and canceled before the designated beams are decoded. We show that the RS strategy achieves significant performance gains over the conventional multigroup multicast beamforming strategy.",
keywords = "Broadcasting, degrees of freedom, downlink beamforming, multicasting, WMMSE approach",
author = "Hamdi Joudeh and Bruno Clerckx",
year = "2016",
month = aug,
day = "9",
doi = "10.1109/SPAWC.2016.7536771",
language = "English",
series = "IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC",
publisher = "Institute of Electrical and Electronics Engineers",
booktitle = "SPAWC 2016 - 17th IEEE International Workshop on Signal Processing Advances in Wireless Communications",
address = "United States",
note = "17th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2016 ; Conference date: 03-07-2016 Through 06-07-2016",
}