Name
Title | ||
|---|---|---|
Channel Estimation for Uniform Rectangular Array Based Massive MIMO Systems With Low Complexity |
Abstract | ||
|---|---|---|
In this paper, a low complexity channel estimation method is proposed for
<italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">two-dimensional</italic>
(2-D) massive MIMO systems with
<italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">uniform rectangular arrays</italic>
of antennas. Instead of assuming independent fading between different transmit–receive antenna pairs, an array-structure-based physical channel model that characterizes the realistic scattering environments via the angles and gains associated with different propagation paths is studied. A 2-D
<italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Fourier-transform</italic>
(FT) based on elevation and azimuth steering factors is applied to derive the spatial spectrum of received signals in angular domain at
<italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">base station</italic>
. Based on the spectrum analysis, the spatial spectrum of the received data is used to estimate the channel parameters, including
<italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">direction of arrival</italic>
(incident azimuth and elevation angles) and the path amplitude of each resolvable path. Since the channel coefficients are estimated in spatial domain and the proposed 2-D FT can be realized by
<italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">fast-Fourier-transform</italic>
, the computational complexity is reduced significantly. Simulation results are provided to verify the accuracy and the complexity of the proposed scheme. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1109/TVT.2019.2893938 | IEEE Transactions on Vehicular Technology |
Keywords | Field | DocType |
Channel estimation,Antenna arrays,Direction-of-arrival estimation,Computational complexity,Two dimensional displays,Contamination | Base station,Computer science,Direction of arrival,Fading,Azimuth,Communication channel,Algorithm,Electronic engineering,Elevation,Amplitude,Computational complexity theory | Journal |
Volume | Issue | ISSN |
68 | 3 | 0018-9545 |
Citations | PageRank | References |
3 | 0.38 | 0 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Anding Wang | 1 | 56 | 7.00 |
| Rui Yin | 2 | 129 | 11.38 |
| Caijun Zhong | 3 | 2007 | 120.77 |