Study on Application of Precoding in HSDPA MIMO System
Haifeng Li · Communications technology · 2008
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.