Title
Quasi-Orthogonal Combining for Reducing RF Chains in Massive MIMO Systems.
Abstract
We address the issue of reducing the number of radio frequency (RF) chains in large/massive multiple input multiple output systems while retaining their detection performance. For this, we use a hybrid combining approach and formulate a signal to interference plus noise ratio (SINR) maximization problem. We argue that using an orthogonal basis of the channel matrix to maximize the numerator of the SINR is a worthwhile approach to pursue and use it to propose a quasi-orthogonal combining scheme. Simulation results show that the proposed scheme can provide a detection performance and sum rate close to that of a system utilizing a dedicated RF chain for each receive antenna with less number of RF chains and without increasing the overall computational complexity.
Year
DOI
Venue
2017
10.1109/LWC.2016.2639509
IEEE Wireless Commun. Letters
Keywords
Field
DocType
Radio frequency,MIMO,Receiving antennas,Bit error rate,Interference,Search problems,Signal to noise ratio
Topology,Mathematical optimization,Simulation,Signal-to-noise ratio,Orthogonal basis,MIMO,Radio frequency,Signal-to-interference-plus-noise ratio,Interference (wave propagation),Mathematics,Computational complexity theory,Bit error rate
Journal
Volume
Issue
ISSN
6
1
2162-2337
Citations 
PageRank 
References 
2
0.39
12
Authors
2
Name
Order
Citations
PageRank
abhay kumar sah1204.84
Ajit Kumar Chaturvedi26311.37