JOINT ESTIMATION OF TIME DELAYS AND DOAS IN TD-SCDMA SYSTEMS

摘要

The problem of estimating the time delays and DOAs of multipath signals in wireless communications is considered. For joint estimation of ToAs and DoAs, the new multipath channel model is presented firstly. Based on this new channel model, we generalizde the classical MUSIC algorithm for spatial information named S-MUSIC to estimation algorithm named T-MUSIC for temporal parameters. For multipath signals in TD-SCDMA systems, T-MUSIC and S-MUSIC rar applied alternatively to separate signals and estimate ToAs and DoAs without training sequences. Simulation examples are included to illustrate the algorithm performance.