Fast Antenna Array Calibration Using One External Receiver
Abstract
:1. Introduction
1.1. Contributions
- We estimate the mutual coupling of a transmit antenna array by developing a matrix-inversion-free algorithm. Most methods in the literature that estimate mutual coupling require an matrix inversion, which may not be practical for a large antenna array.
- The algorithm requires a single antenna element at the receiver. Our method requires only one receiver with a known location to capture the the transmitted signals (training sequence) from the transmit array.
- The algorithm utilizes a constant modulus training sequence; thus, it can work at the saturated region of the high-power amplifier. High-power amplifiers, used in most active radars, work at the saturated region of the amplifiers.
- Our simulation results show the effectiveness of the developed algorithm in terms of fast estimation and excellent performance, even for large array systems such as massive MISO.
- The compensation complexity in our method is , whereas in the previous methods, it is stated to be .
- 1:
- In this paper, we focus on the mutual coupling on the transmitter side only. We assume that we have multiple antenna transmitters and only have a single antenna receiver.
- 2:
- The algorithm is also applicable to receiving antenna arrays. In this case, one or more single antenna transmitters are required. In this paper, we focus on the transmitter side only, since the transmit mutual coupling is much more challenging due to the CMC requirement described earlier [8].
- 3:
- This algorithm is useful for radar engineers and communication system designers.
1.2. Notations
2. Materials and Methods
Algorithm 1: Mutual coupling algorithm |
|
3. Results
3.1. Low Signal-to-Noise Ratio (SNR)
3.2. High Signal-to-Noise Ratio (SNR)
3.3. Multipath Environment Scenario
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Abbreviations
MISO | Multi-input–single-output |
MIMO | Multi-input–multi-output |
CMC | constant modulus constraint |
PAR | Peak-to-average ratio |
MOM | Method of moments |
RISR | Reiterative super-resolution |
DFT | Discrete Fourier transform |
FFT | Fast Fourier transform |
IFFT | Inverse Fast Fourier transform |
SNR | Signal-to-noise ratio |
LOS | Line of sight |
SINR | Signal-to-interference-noise ratio |
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Parameter | Value |
---|---|
f | 3 GHz |
10 cm | |
d | |
Number of antennas (M) | 16, 64, 128 |
p | 3, 5, 7, 12, 16 |
Direction of source | −5° |
Method | Compensation Complexity | Number of Receivers or Transmitters | Receiver or Transmitter Side |
---|---|---|---|
Method in [30] | 1 | Transmitter or receiver | |
Method in [31] | 1 | Receiver | |
Method in [33] | 1 (records a lot of data) | Receiver | |
Proposed method | + | 1 | Transmitter (can be extended to receiver) |
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Bazuhair, B.; Aldayel, O. Fast Antenna Array Calibration Using One External Receiver. Sensors 2023, 23, 9026. https://doi.org/10.3390/s23229026
Bazuhair B, Aldayel O. Fast Antenna Array Calibration Using One External Receiver. Sensors. 2023; 23(22):9026. https://doi.org/10.3390/s23229026
Chicago/Turabian StyleBazuhair, Basem, and Omar Aldayel. 2023. "Fast Antenna Array Calibration Using One External Receiver" Sensors 23, no. 22: 9026. https://doi.org/10.3390/s23229026
APA StyleBazuhair, B., & Aldayel, O. (2023). Fast Antenna Array Calibration Using One External Receiver. Sensors, 23(22), 9026. https://doi.org/10.3390/s23229026