Patent ID: 8792399
Filing Date: 2014-07-29
Classification: H04B,H04L

Abstract:
1. A method of wireless communication in an Orthogonal Frequency Division Multiplexing (OFDM) system, comprising: receiving a plurality of signals at a receive antenna on a plurality of reference signal (RS) resource elements of the OFDM system, the plurality of received signals each comprising one of a first set of reference signals transmitted from a first transmit antenna and one of a second set of reference signals transmitted from a second transmit antenna, wherein the one of the second set of reference signals transmitted from the second transmit antenna is identical to a first phase rotation of the one of the first set of reference signals transmitted from the first transmit antenna in a frequency domain; executing a Fast Fourier Transform (FFT) operation based on the plurality of received signals; calculating a plurality of frequency domain channel weights based on the FFT operation; and determining a first set of channel coefficients between the first transmit antenna and the receive antenna, and a second set of channel coefficients between the second transmit antenna and the receive antenna, based at least in part, on the plurality of frequency domain channel weights.