New segmental turbo receiver for LTE single user uplink over double selective channels

In this paper, we focus on the low complexity algorithm of turbo receivers over double selective channels for the Lone Term Evolution (LTE) single user uplink. Based on the analysis of the physical meaning of the frequency channel matrix, we propose a low complexity algorithm which is significant for the existent frequency LDL turbo receivers. To further reduce the receiver complexity, based on the analysis of the equivalent noise of the conventional turbo equalizer over fast fading channels, a new low complexity sub-block orthogonal segmental turbo receiver is also presented. Through Monte Carlo simulation, we confirm that with lower complexity the performance of the proposed turbo receiver is better than the existent frequency LDL turbo receivers.