Patent ID: 8462613
Filing Date: 2013-06-11
Classification: H04L

Abstract:
1. A method for receiver channel estimation in an LTE wireless communication system user equipment comprising: receiving a downlink OFDM signal from an LTE base station; performing a least-squared estimation and a minimum mean-square error (MMSE) estimation on pilot resource elements to generate channel response estimates at predefined pilot locations in the received signal; using the MMSE channel response estimates to compute further channel response estimates for remaining resource elements, comprising: (i) averaging each pair of adjacent pilot resource elements in a frequency direction to obtain a channel response estimate of a resource element in the middle of the pair of pilot resource elements; (ii) performing an MMSE interpolation in the time domain for all sub-carriers containing pilot signals; and (iii) performing linear interpolation in the frequency direction for all sub-carriers not containing any pilot signals.