Patent ID: 8824580

Claim:
A method of operation of a wireless transmitter comprising: generating, by the wireless transmitter, a signal comprising data symbols in a null space of a predetermined frequency, wherein generating the signal comprises: for each k-th transmission time period of a number, N, of transmission time periods where k=1, 2, . . . , N and N is an integer: weighting each n-th data symbol of a number, N−1, of data symbols according to a k-th element of a different basis vector in a set of basis vectors that characterize the null space of the predetermined frequency to thereby provide weighted data symbols for the k-th transmission time period, where n=1, 2, . . . , N−1; and linearly combining the weighted data symbols for the k-th transmission time period to provide a signal component for the k-th transmission time period for the predetermined frequency; for the number, N, of transmission time periods, modulating, based on the generated signal, a tone having the predetermined frequency; and transmitting the modulated tone.