Open Science Research Excellence

Tapani Ristaniemi

Publications

1

Publications

1
2408
Semi-Blind Two-Dimensional Code Acquisition in CDMA Communications
Abstract:

In this paper, we propose a new algorithm for joint time-delay and direction-of-arrival (DOA) estimation, here called two-dimensional code acquisition, in an asynchronous directsequence code-division multiple-access (DS-CDMA) array system. This algorithm depends on eigenvector-eigenvalue decomposition of sample correlation matrix, and requires to know desired user-s training sequence. The performance of the algorithm is analyzed both analytically and numerically in uncorrelated and coherent multipath environment. Numerical examples show that the algorithm is robust with unknown number of coherent signals.

Keywords:
Two-Dimensional Code Acquisition, EV-t, DSCDMA