Reduced-Complexity Direction of Arrival Estimation Using Real-Valued Computation with Arbitrary Array Configurations

Algorithm 1

The Proposed Algorithm.

Require: snapshots of the array output vectors.

Return: a set of L estimated source DOAs.

 1. Estimate and obtain its real part ;

 2. Compute to get the noise matrix ;

 3. Construct ;

 4. Search over only to get T peak angles ;

 5. Obtain candidate angles and ;

 6. Select the true DOAs by .