Patent ID: 8401095

Claim:
A method of transmitting signals by a user equipment, the method comprising: performing a Discrete Fourier Transform (DFT) of a plurality of uplink data symbols at a DFT module to produce a transformed plurality of uplink data symbols; precoding the transformed plurality of uplink data symbols at a precoder by multiplying a vector of the transformed plurality of uplink data symbols by a precoding matrix; mapping the precoded plurality of uplink data symbols to a plurality of subcarriers at a mapper; transforming the mapped plurality of uplink data symbols to produce a time domain signal at a transformer; and transmitting the time domain signal to a base station, wherein a number of rows of the precoding matrix is equal to a number of columns of the precoding matrix, and wherein amplitudes of diagonal elements of the precoding matrix are greater than amplitudes of all residual elements not including the diagonal elements.