Pre-equalization techniques for downlink and uplink TDD MC-CDMA systems
Luca Sanguinetti, Michele Morelli, Paola Bisaglia, Nevio Benvenuto, Silvano Pupolin · CINECA IRIS Institutial research information system (University of Pisa) · 2004
Time division duplex (TDD) multi carrier-code division multiple access (MC-CDMA) systems have recently been proposed as potential candidates for next generation (4G) technology. In order to mitigate multiple access interference, in this paper we investigate pre-equalization schemes for both downlink and uplink transmissions, the former also in a multiple transmit antenna scenario. In particular, new pre-equalizer techniques are introduced and complexity issues addressed. Numerical results are given to highlight the effectiveness of the proposed schemes with respect to other existing pre-equalizer solutions.