Proceedings ArticleDOI
A modified leakage-based transmit filter design for multi-user MIMO systems
Piya Patcharamaneepakorn,Simon Armour,Angela Doufexi +2 more
- pp 912-916
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TLDR
A modified definition of signal-to-leakage-plus-noise ratio (SLNR) as a criterion for linear transmit filter design in Multi-user MIMO systems and an iterative precoding algorithm is proposed and is studied with two linear receivers.Abstract:
This paper proposes a modified definition of signal-to-leakage-plus-noise ratio (SLNR) as a criterion for linear transmit filter design in Multi-user MIMO systems. The proposed metric incorporates receiver structures into the precoder design, which can potentially exploit unused receive signal subspaces in cases where the available eigenmodes are not fully transmitted. The improvement in terms of the degrees of freedom of the precoder is also elaborated. In addition, an iterative precoding algorithm is proposed and is studied with two linear receivers, namely the matched filter (MF) and the minimum mean square error (MMSE) receivers. Simulation results show that the proposed scheme outperforms the conventional SLNR scheme and can achieve further improvement with an MMSE receiver, at the expense of increased computational complexity and slow convergence rate. Moreover, the proposed scheme is shown to reduce its form to the conventional scheme when full-eigenmode transmission is assumed.read more
Citations
More filters
Journal ArticleDOI
Coordinated beamforming schemes based on modified signal-to-leakage-plus-noise ratio precoding designs
TL;DR: Simulation results show that, for multiple users per cell, the proposed algorithms can effectively integrate user and substream selections and achieve multi-user diversity gain.
Dissertation
Iterative Leakage-Based Precoding for Multiuser-MIMO Systems
TL;DR: This thesis investigates the application of an iterative leakage-based precoding algorithm to practical multiuser-MIMO systems and proposes several modifications to the aforementioned method which demonstrated improved performance under certain practical conditions.
Journal ArticleDOI
Modified leakage-based transmit filter designs for multi-user MIMO systems
TL;DR: A robust design of the proposed schemes for the case of imperfect channel state information (CSI) is presented, and adequate knowledge of effective receive subspaces can be attained by simply assuming matched filters in the iterative precoding process, while further improvement can be obtained by an actual implementation of interference-mitigation-capable receivers.
References
More filters
Proceedings ArticleDOI
Reduced Complexity Joint User and Receive Antenna Selection Algorithms for SLNR-Based Precoding in MU-MIMO Systems
TL;DR: Two suboptimal algorithms are presented to overcome the impractical computational burden of exhaustive methods and are shown to perform very close to the exhaustive joint user and antenna selection algorithm.