Cooperative transmission in cloud RAN considering fronthaul capacity and cloud processing constraints
- 1 April 2014
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE) in 2014 IEEE Wireless Communications and Networking Conference (WCNC)
- p. 1862-1867
- https://doi.org/10.1109/wcnc.2014.6952553
Abstract
We investigate the cooperative transmission design for the cloud radio access network (C-RAN) considering fronthaul capacity and cloud processing constraints. Specifically, we consider the joint transmission scheme where the baseband signals and precoding vectors are processed and calculated by the cloud, which are delivered over the fronthaul links to the remote radio heads (RRHs) to form the RF signals for being transmitted to the users. We formulate the joint optimization problem for precoding design and allocation of RRHs, fronthaul capacity, and BBU processing resources to minimize the total transmission power subject to QoS constraints of the users. We present both optimal exhaustive search algorithm and two low-complexity algorithms to solve the resource allocation problem where the first one can achieve the Pareto optimality and the second one can determine an efficient solution with pretty low complexity. Numerical results confirm the excellent performance of the proposed low-complexity algorithms.Keywords
This publication has 10 references indexed in Scilit:
- Distributed Base Station Association and Power Control for Heterogeneous Cellular NetworksIEEE Transactions on Vehicular Technology, 2013
- Robust Layered Transmission and Compression for Distributed Uplink Reception in Cloud Radio Access NetworksIEEE Transactions on Vehicular Technology, 2013
- The case for re-configurable backhaul in cloud-RAN based small cell networksPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2013
- Robust and Efficient Distributed Compression for Cloud Radio Access NetworksIEEE Transactions on Vehicular Technology, 2012
- Interference management in OFDMA femtocell networks: issues and approachesIEEE Wireless Communications, 2012
- Uplink CoMP under a Constrained Backhaul and Imperfect Channel KnowledgeIEEE Transactions on Wireless Communications, 2011
- Coordinated multipoint: Concepts, performance, and field trial resultsIEEE Communications Magazine, 2011
- Coordinated multipoint transmission/reception techniques for LTE-advanced [Coordinated and Distributed MIMOIEEE Wireless Communications, 2010
- Semidefinite Relaxation of Quadratic Optimization ProblemsIEEE Signal Processing Magazine, 2010
- Weighted matchingsAlgorithms and Computation in Mathematics, 2008