A Downlink Max-SINR Precoding for Massive MIMO System

To acquire the maximal array gain and mitigate the impact of pilot contamination, the downlink precoding algorithm on Max-SINR criterion was investigated and improved for Massive MIMO system. The objective function assured to maximize the utilization rate of the transmission power under the condition that SINR is not lower than the desired threshold. The Lagrangian function was deduced according to the objective function. Further SINR computation counted the channel estimation error caused by pilot contamination and its computational complexity was reduced by utilizing the character of Massive MIMO channel. At last the optimal downlink precoding matrix was obtained by KKT conditions. When base station configured 100 antennas and the pilot contamination was severe, numerical results proved that the spectrum efficiency of the proposed algorithm was 1.9 times higher than the popular Massive MIMO precoding --- MF algorithm. The proposed algorithm can effectively mitigate the impact of pilot contamination and achieve high throughput with maximizing gain, and is valuable to Massive MIMO system.

[1]  Weifeng Su,et al.  Joint Power Optimization for Multi-Source Multi-Destination Relay Networks , 2011, IEEE Transactions on Signal Processing.

[2]  Erik G. Larsson,et al.  Energy and Spectral Efficiency of Very Large Multiuser MIMO Systems , 2011, IEEE Transactions on Communications.

[3]  Ayfer Özgür,et al.  Spatial Degrees of Freedom of Large Distributed MIMO Systems and Wireless Ad Hoc Networks , 2013, IEEE Journal on Selected Areas in Communications.

[4]  Venugopal V. Veeravalli,et al.  A Convergent Version of the Max SINR Algorithm for the MIMO Interference Channel , 2013, IEEE Transactions on Wireless Communications.

[5]  Osama N. Alrabadi,et al.  Beamforming via Large and Dense Antenna Arrays Above a Clutter , 2013, IEEE Journal on Selected Areas in Communications.

[6]  Sayandev Mukherjee,et al.  Downlink SINR distribution in a heterogeneous cellular wireless network with max-SINR connectivity , 2011, 2011 49th Annual Allerton Conference on Communication, Control, and Computing (Allerton).

[7]  H. Vincent Poor,et al.  Compressive autonomous sensing (CASe) for wideband spectrum sensing , 2012, 2012 IEEE International Conference on Communications (ICC).

[8]  Erwin Riegler,et al.  On the Capacity of Large-MIMO Block-Fading Channels , 2012, IEEE Journal on Selected Areas in Communications.

[9]  F. Tufvesson,et al.  Channel measurements and analysis for very large array systems at 2.6 GHz , 2012, 2012 6th European Conference on Antennas and Propagation (EUCAP).

[10]  Xiaoli Ma,et al.  Element-Based Lattice Reduction Algorithms for Large MIMO Detection , 2013, IEEE Journal on Selected Areas in Communications.

[11]  Mérouane Debbah,et al.  Massive MIMO in the UL/DL of Cellular Networks: How Many Antennas Do We Need? , 2013, IEEE Journal on Selected Areas in Communications.

[12]  Erik G. Larsson,et al.  Scaling Up MIMO: Opportunities and Challenges with Very Large Arrays , 2012, IEEE Signal Process. Mag..

[13]  Meixia Tao,et al.  Coordinated Multicast Beamforming in Multicell Networks , 2012, IEEE Transactions on Wireless Communications.

[14]  Thomas L. Marzetta,et al.  Pilot Contamination Reduction in Multi-User TDD Systems , 2010, 2010 IEEE International Conference on Communications.

[15]  Thomas L. Marzetta,et al.  Pilot contamination precoding in multi-cell large scale antenna systems , 2012, 2012 IEEE International Symposium on Information Theory Proceedings.

[16]  Fredrik Tufvesson,et al.  Linear Pre-Coding Performance in Measured Very-Large MIMO Channels , 2011, 2011 IEEE Vehicular Technology Conference (VTC Fall).

[17]  Songnan Xi,et al.  Iterative SINR-Max Cooperative Beamforming in Multiuser MIMO Systems , 2008, 2008 IEEE Sarnoff Symposium.

[18]  Tony Q. S. Quek,et al.  Max-Min SINR Coordinated Multipoint Downlink Transmission—Duality and Algorithms , 2012, IEEE Transactions on Signal Processing.

[19]  Michael D. Zoltowski,et al.  SINR-Max cooperative beamforming for multiuser MIMO-OFDM systems , 2008, 2008 IEEE International Conference on Acoustics, Speech and Signal Processing.

[20]  Wolfgang Utschick,et al.  Large system analysis of the Successive Encoding Successive Allocation Method for the MIMO BC , 2010, 2010 International ITG Workshop on Smart Antennas (WSA).

[21]  Philippe Loubaton,et al.  On the Precoder Design of Flat Fading MIMO Systems Equipped With MMSE Receivers: A Large-System Approach , 2009, IEEE Transactions on Information Theory.

[22]  Chan-Byoung Chae,et al.  Network massive MIMO for cell-boundary users: From a precoding normalization perspective , 2012, 2012 IEEE Globecom Workshops.

[23]  Thomas L. Marzetta,et al.  Performance of Conjugate and Zero-Forcing Beamforming in Large-Scale Antenna Systems , 2013, IEEE Journal on Selected Areas in Communications.

[24]  Thomas L. Marzetta,et al.  Pilot Contamination and Precoding in Multi-Cell TDD Systems , 2009, IEEE Transactions on Wireless Communications.

[25]  Thomas L. Marzetta,et al.  Noncooperative Cellular Wireless with Unlimited Numbers of Base Station Antennas , 2010, IEEE Transactions on Wireless Communications.

[26]  Yongming Huang,et al.  Coordinated multi-cell beamforming scheme using uplink-downlink max-min SINR duality , 2012, 2012 IEEE Global Communications Conference (GLOBECOM).

[27]  Elisabeth de Carvalho,et al.  Weighted MMSE Beamforming Design for Weighted Sum-Rate Maximization in Coordinated Multi-Cell MIMO Systems , 2012, 2012 IEEE Vehicular Technology Conference (VTC Fall).