Rate Splitting and Common Message Decoding for MIMO C-RAN Systems
Type
Conference PaperAuthors
Ahmad, Alaa AlameerKakar, Jaber
Dahrouj, Hayssam
Chaaban, Anas
Shen, Kaiming
Sezgin, Aydin
Al-Naffouri, Tareq Y.

Alouini, Mohamed-Slim

KAUST Department
Electrical Engineering ProgramComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Date
2019-08-30Online Publication Date
2019-08-30Print Publication Date
2019-07Permanent link to this record
http://hdl.handle.net/10754/658667
Metadata
Show full item recordAbstract
In this paper, we study the benefits of rate-splitting (RS) in multiple-input multiple-output (MIMO) cloud radio access networks (C-RAN). For this setting, we propose a stream-based transmission scheme in which user's messages are divided into a private and a common part, each of which is encoded into multiple streams. Under this stream-based strategy, we formulate a weighted sum-rate maximization problem subject to backhaul capacity and transmit power constraints. We determine the beamforming vectors of private and common streams of this non-convex optimization problem via a proposed iterative algorithm based on the fractional programming (FP) framework. Numerical results show gains of up to 27% of RS-MIMO over the baseline scheme of treating interference as noise (TIN). Particularly, at large backhaul capacities and specific antenna settings at which interference levels are maximal, rate splitting along with common message decoding is a viable option for effective interference management in MIMO C-RAN.Citation
Ahmad, A. A., Kakar, J., Dahrouj, H., Chaaban, A., Shen, K., Sezgin, A., … Alouini, M.-S. (2019). Rate Splitting and Common Message Decoding for MIMO C-RAN Systems. 2019 IEEE 20th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC). doi:10.1109/spawc.2019.8815579Conference/Event name
20th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2019Additional Links
https://ieeexplore.ieee.org/document/8815579/ae974a485f413a2113503eed53cd6c53
10.1109/SPAWC.2019.8815579