Applying GCMAC to predistortion in GSM base stations

Predistortion in GSM has been introduced to deal with saturation in amplifcation at base transceiver stations (BTS). This paper will focus on the elements and architectures in signal predistortion for one carrier and multicarrier modulations. The GCMAC neural network has been introduced as predistorter to provide the design with adaptive, digital and practical features. The results show how the predistortion architectures proposed allows working in saturation regimen. This point is important since it gives flexibility in reassignment of cells by increasing the coverage when necessary. It also improves amplification characteristics avoiding co-channel interference, aging, intermodulation distortion, etc