Implementation and Simulation of a Multicarrier System for 4th Generation Mobile Communications

Y. Fernández Somarriba, A. del Barrio Salas, J.L. García García, and A. Herrera Guardado (Spain)


STBC, MC-CDMA, spreading sequences, channel estimation, MIMO, RF topologies.


A new full implementation of a multicarrier system for 4th generation mobile communications is presented. The implementation explains different techniques: MC-CDMA or MC-DS-CDMA and their choice based on characteristics of a MIMO channel. Moreover, complex sequences are found to be the best way to improve the power amplifier efficiency because of PAPR; and the spreading length used to guarantee the system quality. To achieve complete results, an exponential channel model has been developed and space-time coding has been introduced to obtain the highest performance depending on spatial and temporal diversity in a MIMO channel, using two different channel estimation techniques. Finally, some comments are included about integrated transmitted and received RF architectures, which are the most suitable for these multicarrier systems.

Important Links:

Go Back