Filter banks and OFDM-OQAM for high throughput wireless LAN

Abstract

Efficient, robust and flexible multicarrier transmission can be achieved with filter banks. The approach is illustrated through an application in high data throughput wireless LAN, using the 20 MHz frequency band. With respect to the OFDM scheme of the present wireless LAN standards, the gains offered by the filter bank technique mainly come from the absence of guard time and the increase in the number of bits per symbol permitted by the continuous monitoring and control of the residual interference in the sub-channels. Complexity issues are discussed and the flexibility of operation of the proposed system is underlined as well as its robustness to perturbations in the radio channel.