Software-configurable adaptive array antenna system for ISDB-T reception

This paper presents an adaptive array antenna system for ISDB-T reception (Japan digital TV broadcasting) with the adaptive array algorithm is configurable by software. By exploiting the merits of software-defined radio (SDR), a number of adaptive algorithms such as digital beamforming and/or null-steering (i.e. maximum ratio combining - MRC, sample matrix inversion SMI) are embedded in DSP board that is reconfigurable according to the radio propagation environment. The experiment results for MRC and SMI algorithms successfully improved BER performance for ISDB-T reception with an analog TV interference and intersymbol interference by over GI delay waves.