# Ching-Wei Liao

## Publications

##### 1 Efficient Antenna Array Beamforming with Robustness against Random Steering Mismatch

**Authors:**
Ju-Hong Lee,
Ching-Wei Liao,
Kun-Che Lee

**Abstract:**

This paper deals with the problem of using antenna sensors for adaptive beamforming in the presence of random steering mismatch. We present an efficient adaptive array beamformer with robustness to deal with the considered problem. The robustness of the proposed beamformer comes from the efficient designation of the steering vector. Using the received array data vector, we construct an appropriate correlation matrix associated with the received array data vector and a correlation matrix associated with signal sources. Then, the eigenvector associated with the largest eigenvalue of the constructed signal correlation matrix is designated as an appropriate estimate of the steering vector. Finally, the adaptive weight vector required for adaptive beamforming is obtained by using the estimated steering vector and the constructed correlation matrix of the array data vector. Simulation results confirm the effectiveness of the proposed method.

**Keywords:**
Robustness,
antenna array,
adaptive beamforming,
linearly constrained minimum variance,
steering vector

## Abstracts

##### 4 Robust Processing of Antenna Array Signals under Local Scattering Environments

**Authors:**
Ju-Hong Lee,
Ching-Wei Liao

**Abstract:**

**Keywords:**
signal blocking,
adaptive antenna beamforming,
local scattering,
steering mismatch

##### 3 Signal Processing Techniques for Adaptive Beamforming with Robustness

**Authors:**
Ju-Hong Lee,
Ching-Wei Liao

**Abstract:**

**Keywords:**
Robustness,
adaptive beamforming,
steering angle error,
signal blocking

##### 2 Adaptive Beamforming with Steering Error and Mutual Coupling between Antenna Sensors

**Authors:**
Ju-Hong Lee,
Ching-Wei Liao

**Abstract:**

**Keywords:**
adaptive beamforming,
mutual coupling effect,
recursive algorithm,
steering angle error

##### 1 Efficient Antenna Array Beamforming with Robustness against Random Steering Mismatch

**Authors:**
Ju-Hong Lee,
Ching-Wei Liao,
Kun-Che Lee

**Abstract:**

**Keywords:**
Robustness,
antenna array,
adaptive beamforming,
linearly constrained minimum variance,
steering vector