Study on Application of Precoding in HSDPA MIMO System

An novel method is proposed,which is mapped from optimal codebook to fixed codebook and based on eigenvalue decomposition of channel correlation matrix and minimum phase difference principle.It saves a large number of feedback bits and improves the system capacity.Fixed codebook based on this method provides a trade off between feedback overhead and link performance.Some simulations and analysis indicate that this method is of good synthetical performance and provides certain references for the implementation of practical systems.