Digital Pre-Distortion for Concurrent Multiband and Multiple Antenna Transmission
The proposed project aims at the design and implementation of low complexity digital pre-distortion (DPD) algorithms for multiband and multiple input multiple output (MIMO) wireless transmitters. The power amplifier (PA) is one of the major sources of power dissipation in wireless base stations. The DPD techniques enable the PA to operate in a more efficient power level resulting in more energy efficient wireless networks. To address the ever increasing demand for higher data rates, the MIMO and the carrier aggregation techniques are being adopted by the current and upcoming wireless standards. The requirement for concurrent transmission over multiple bands in carrier aggregation schemes and over multiple antennas in MIMO schemes poses a great challenge to the design of feasible DPD algorithms. The multiband/MIMO DPD algorithms currently available in the literature are computationally too complex to be implemented in practice. TEKTELIC believes that the proposed research project will result in low complexity and yet effective DPD designs that can be used in the company’s future multiband and MIMO radio products.