Patent ID: 8750355
Filing Date: 2014-06-10
Classification: H04J,H04L

Abstract:
1. A method for measuring reference signal receive power for use in a Long Term Evolution user equipment, comprising the steps of: extracting time samples from a received signal that comprises reference symbols having a predefined spacing of n subcarriers; performing a Fast Fourier Transform (FFT) operation on the extracted samples for transformation into the frequency domain; extracting said reference symbols from the frequency domain samples to determine a reference signal receive power of the received signal; wherein the extracting time samples step, for each OFDM symbol, comprises: frequency shifting the received signal so that an upper or lower half band becomes centered around DC frequency; decimating the received signal to a width of n·2 extracting time samples from the decimated signal and frequency shifting said extracted time samples by a first discrete number of carriers such that one of the reference symbols falls to the DC frequency; combining the extracted time samples by dividing them into n sample vectors, wherein each of the n sample vectors which has a length equal to the subsequently applied FFT operation, and superimposing said n sample vectors to obtain a single sample vector of a length equal to the subsequently applied FFT; and wherein said FFT operation step is performed on the superimposed signal to obtain a contiguous set of reference symbol carriers from a signal transmitted by one base station and the contiguous set of reference symbol carriers is used to determine the reference signal receive power of a signal transmitted by said base station.