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Iterative Beam Alignment Algorithms for TDD MIMO Systems

Abstract: 

We propose two novel, low-complexity techniques for beam alignment in time division duplexing (TDD) multiple-input multiple-output (MIMO) systems. The techniques are inspired by the power method, an iterative algorithm to determine eigenvalues and eigenvectors through repeated matrix multiplications and improve upon this simple idea by providing a better performance in the low-SNR regime. The first technique sequentially constructs a least-squares estimate of the channel matrix, which is then used to calculate the optimal beamformer/combiner pair. The second technique aims to mitigate the effect of additive noise by using a linear combination of the previously tried beams to calculate the next beam in the iteration. Simulation results provide insight on the performance of both algorithms in the presence of noise and compare them with similar techniques from the literature.

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Paper Details

Authors:
Dennis Ogbe, David J. Love, Vasanthan Raghavan
Submitted On:
6 March 2017 - 11:23pm
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Type:
Presentation Slides
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Presenter's Name:
Dennis Ogbe
Paper Code:
3973
Document Year:
2017
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(235 downloads)

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[1] Dennis Ogbe, David J. Love, Vasanthan Raghavan, "Iterative Beam Alignment Algorithms for TDD MIMO Systems", IEEE SigPort, 2017. [Online]. Available: http://sigport.org/1675. Accessed: Jun. 25, 2017.
@article{1675-17,
url = {http://sigport.org/1675},
author = {Dennis Ogbe; David J. Love; Vasanthan Raghavan },
publisher = {IEEE SigPort},
title = {Iterative Beam Alignment Algorithms for TDD MIMO Systems},
year = {2017} }
TY - EJOUR
T1 - Iterative Beam Alignment Algorithms for TDD MIMO Systems
AU - Dennis Ogbe; David J. Love; Vasanthan Raghavan
PY - 2017
PB - IEEE SigPort
UR - http://sigport.org/1675
ER -
Dennis Ogbe, David J. Love, Vasanthan Raghavan. (2017). Iterative Beam Alignment Algorithms for TDD MIMO Systems. IEEE SigPort. http://sigport.org/1675
Dennis Ogbe, David J. Love, Vasanthan Raghavan, 2017. Iterative Beam Alignment Algorithms for TDD MIMO Systems. Available at: http://sigport.org/1675.
Dennis Ogbe, David J. Love, Vasanthan Raghavan. (2017). "Iterative Beam Alignment Algorithms for TDD MIMO Systems." Web.
1. Dennis Ogbe, David J. Love, Vasanthan Raghavan. Iterative Beam Alignment Algorithms for TDD MIMO Systems [Internet]. IEEE SigPort; 2017. Available from : http://sigport.org/1675