An Improved Signal Detection Algorithm of LTE System in Interference Environment

In LTE system, due to resource scheduling on the same frequency, the target cell and neighboring cells must take measures to suppress the co-channel interference to improve the system performance. The time delay spread and correlation bandwidth are treated as fixed value when the correlation matrix is calculated in the interference rejection combining algorithm, which degrades the performance of IRC algorithm. So this paper proposes an adaptive interference rejection combining algorithm, which calculates the correlation matrix with different parameters depending on the channel type. At last simulation is done to test performance of adaptive interference rejection combining and other signal detection algorithm. It can be seen that this algorithm achieves at most 1dB performance gain.