Header menu link for other important links
X
Transceiver Design for Nonconcurrent Two-Way MIMO AF Relaying with QoS Guarantees
Published in Institute of Electrical and Electronics Engineers Inc.
2016
Volume: 65
   
Issue: 12
Pages: 9651 - 9661
Abstract
We consider a cellular system with amplify-and-forward (AF) nonconcurrent two-way relaying (ncTWR), where a base station serves a transmit-only user and a receive-only user. Most of the state-of-the-art transceiver designs for AF multiple-input multiple-output (MIMO) ncTWR optimize a system-wide objective function subject to the transmit power constraints. Transceiver designs that incorporate quality-of-service (QoS) constraints are not well investigated in ncTWR literature. In this paper, we design a MIMO AF transceiver that maximizes weighted sum-rate (WSR) while guaranteeing the QoS constraints that are cast as per-stream rate required by two ncTWR users. The WSR maximization is a nonconvex problem due to its nonconvex objective. We solve this problem by separately approximating the objective at low and high signal-to-noise ratios (SNRs), with each approximation cast as a geometric program. With extensive numerical evaluations, we first demonstrate the improved performance of the proposed transceiver over existing designs without QoS constraints. We later investigate the effect of QoS constraints on the system WSR. © 1967-2012 IEEE.
About the journal
JournalData powered by TypesetIEEE Transactions on Vehicular Technology
PublisherData powered by TypesetInstitute of Electrical and Electronics Engineers Inc.
ISSN00189545
Open AccessNo
Concepts (15)
  •  related image
    Channel estimation
  •  related image
    Communication channels (information theory)
  •  related image
    Mimo systems
  •  related image
    Radio transceivers
  •  related image
    Signal to noise ratio
  •  related image
    Transceivers
  •  related image
    AMPLIFY-AND-FORWARD
  •  related image
    BASE STATION SERVES
  •  related image
    GEOMETRIC PROGRAM
  •  related image
    HIGH SIGNAL-TO-NOISE RATIO
  •  related image
    Objective functions
  •  related image
    QUALITY OF SERVICE CONSTRAINTS
  •  related image
    RECEIVE BEAMFORMING
  •  related image
    TRANSCEIVER DESIGN
  •  related image
    Quality of service