Patent ID: 8855230
Filing Date: 2014-10-07
Classification: H04B,H04K,H04L,H04W

Abstract:
1. A communications method comprising: forming at baseband a desired spectrum shape; then generating at baseband a waveform responsive to the desired spectrum shape; and then transmitting and/or receiving information by transmitting and/or receiving at a transmitter and/or at a receiver a plurality of elements of the waveform sequentially one after another via a single carrier frequency; wherein said generating at baseband a waveform responsive to the desired spectrum shape comprises: generating at baseband a discrete time-domain waveform U(nT) without resorting to chipping with a binary waveform; wherein n denotes a discrete time index of U(nT); n=1, 2, . . . , N; NT≦τ; τ denotes a time span of the discrete time-domain waveform U(nT); and T>0; wherein said transmitting and/or receiving information by transmitting and/or receiving at a transmitter and/or at a receiver a plurality of elements of the waveform sequentially one after another via a single carrier frequency comprises: transmitting and/or receiving elements of U(nT) sequentially via the single carrier frequency by transmitting and/or receiving U(T) via the single carrier frequency, followed by transmitting and/or receiving U(2T) via the single carrier frequency, . . . , followed by transmitting and/or receiving U(NT) via the single carrier frequency; and wherein said forming at baseband a desired spectrum shape comprises: processing at baseband devoid of chipping with a binary waveform; using at baseband a first plurality of frequencies to form the desired spectrum shape over a first time interval; and using at baseband a second plurality of frequencies to form the desired spectrum shape over a second time interval; wherein the first plurality of frequencies differs from the second plurality of frequencies in at least one frequency.