Improving Pre-Post Rake Shemes for DS/CDMA Mobile Communications

A technique known as Pre-Post-Rake has been recently proposed in the field of mobile communications. It provides a capacity increase in the downlink by means of alternative solution to the standard Rake processing and to the Pre-Rake approach. In this paper we focused our work on the Pre-Post-Rake and presented a new Pre-Post-Rake scheme that acts as a multi-path channel equalizer. Compared with conventional methods, it reduces the effect of interferences and further improves the performance, in both single user and multi-user environments. The penalizing of this new method is just little extra computational complexity which can be compensated by a reasonable capacity gain.