Low complexity Intercarrier Interference reduction for high mobility wireless systems

With the growing number of infotainment services, the demand on high speed internet in vehicles is increasing. Yet, ensuring a high speed internet access at high mobility is challenging. Indeed, high mobility leads to Doppler shifts that result in Inter Carrier Interference (ICI) in OFDM-based wireless systems. Many ICI equalization techniques have been proposed, yet these incur an additional computational complexity and hence higher energy consumption. In this work, we propose a very low complexity interference reduction method. Based on a linear modeling of the channel variation, we derive relations between the interference terms at the different subcarriers and show that interference can be significantly reduced through simple linear operations.