QoS-Aware Power Allocations for Maximizing Effective Capacity Over Virtual-MIMO Wireless Networks
- 17 September 2013
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal on Selected Areas in Communications
- Vol. 31 (10), 2043-2057
- https://doi.org/10.1109/jsac.2013.131007
Abstract
To enable multiple mobile users to transmit their signals simultaneously over the same sub-channels, the virtual multiple-input multiple-output (V-MIMO) techniques can exploit the multiple-input multiple-output (MIMO) spectrum efficiency gain. Traditional V-MIMO transmission schemes mainly focus on maximizing the throughput of grouped mobile users without taking into account the quality-of-service (QoS) provisionings. In this paper, we propose the optimal power allocation schemes with statistical QoS provisionings to maximize the effective capacity of non-collaborative/collaborative V-MIMO wireless networks, respectively. For non-collaborative V-MIMO wireless networks, the mobile users in one V-MIMO group transmit signals independently over the same sub-channels. In the view point of existing mobile users, they solely occupy the sub-channels. Thus, the existing mobile users employ the QoS-driven single-user power allocation scheme to maximize their effective capacity. By converting the non-collaborative V-MIMO transmission optimization problem into a strictly convex optimization problem, we derive the QoS-driven power allocation scheme for the newly added mobile users to maximize their effective capacity. For collaborative V-MIMO wireless networks where the mobile users in one group can collaboratively transmit their signals, we derive the QoS-driven collaborative power allocation schemes for both the existing and the newly added mobile users. Also conducted is a set of simulation evaluations, showing that our proposed power allocation schemes for V-MIMO wireless networks outperform the other existing schemes.Keywords
This publication has 34 references indexed in Scilit:
- Maximizing effective capacity over wireless links under average and peak power constraintsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2012
- Chunk-Based Resource Allocation in OFDMA Systems—Part II: Joint Chunk, Power and Bit AllocationIEEE Transactions on Communications, 2011
- Combined User Pairing and Spectrum Allocation for Multiuser SC-FDMA TransmissionPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2011
- User Pairing for Multiuser SC-FDMA Transmission over Virtual MIMO ISI ChannelsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2009
- High-Performance Cooperative Demodulation With Decode-and-Forward RelaysIEEE Transactions on Communications, 2007
- Fundamentals of Wireless CommunicationPublished by Cambridge University Press (CUP) ,2005
- Cooperative Diversity in Wireless Networks: Efficient Protocols and Outage BehaviorIEEE Transactions on Information Theory, 2004
- Convex OptimizationPublished by Cambridge University Press (CUP) ,2004
- Performance Guarantees in Communication NetworksTelecommunication Networks and Computer Systems, 2000
- Stability, queue length, and delay of deterministic and stochastic queueing networksIEEE Transactions on Automatic Control, 1994