Iterative receiver with interference suppression for LTE systems

In this paper, we develop an iterative receiver with interference suppression for long term evolution (LTE) downlink systems. The key challenge here is how to accurately estimate the channel state information and spatial covariance matrix of interference by using limited available pilots in LTE systems to improve the interference capability and the successful signal detection probability. To overcome the challenge, an iterative receiver making full use of the time-frequency correlation of channel is proposed. It is shown by computer simulation that the proposed iterative receiver can obtain a lower packet-error ratio compared with the existing algorithms.