Space-Time Matrix Method for Joint DOA and Delay Estimation
| Paper File | Download Paper File | | Appear In | ECTI Transaction EEC (ECTI Transaction EEC) | | Publication Date | 01/08/2006 - 28/08/2006 | | Volume | 4 | | Pages | 112 - 117 | | No | 2 | | Author 1 | Fulai Liu | | Author 2 | Xiyuan Zhou | | Author 3 | Jinkuan Wang | | Author 4 | Ruiyan Du |
Abstract
High-resolution parameter estimation techniques have recently been applied to jointly estimate multipath signal parameters. In this paper, we consider the problem of estimating the directions of arrival (DOAs) and propagation delays of multipath narrowband signals in wireless communications. We define a novel space-time matrix which includes the information of DOAs and delays of multipath signals. The joint DOA and delay estimation method used the defined space-time matrix is named as space-time matrix method. Making using of the proposed method, The DOAs and delays can be estimated by the eigenvalues and corresponding eigenvectors of the defined space-time matrix, respectively. So, the presented method can automatically determined the paring of estimated DOAs and delays by the relationship between eigenvalues and eigenvectors. Compared with the previos work, the space-time matrix method can provide better performance with substantially reduced computational complexity. The performance of some relevant algorithms are compared via simulations, and the effectiveness of the proposed method is verified. |
