Decision Feedback Equalizers with Forward Fractionally-spaced Filters Based on the Joint Unbiased MMSE Criterion
Feng Liu · Telecommunication Engineering · 2004
The principle and structure of decision feedback equalizers with forward fractionally-spaced filters are introduced, and the optimal solution based on the joint unbiased minimum mean square error (JUMMSE) criteria is derived. The effects of equalizer length on Symbol Eerror Rate(SER) performance are also discussed. The simulation results show that for HF channels, with appropriate equalizer length, this kind of equalizers is effective under the higher SNR.