TRANSMITTER AND RECEIVER FOR, AND METHOD OF, TRANSMITTING AND RECEIVING SYMBOLS OVER TIME VARYING CHANNELS WITH DOPPLER SPREAD

Abstract: a communication frame for an otfs transmission system includes at least one first-type and at least one second-type block. at least the first-type block includes data signals two-dimensionally arranged along the delay domain and the doppler domain of which at least one has a superimposed pilot signal. the second-type block includes data signals two-dimensionally arranged along the delay domain and the doppler domain which may or may not have superimposed pilot signals. at least one second-type block is preceded and followed, in the delay-domain, by first-type blocks, the first-type blocks preceding and following a second-type block having at least one identical data symbol and associated superimposed identical pilot symbol at an identical location in the two-dimensional arrangement. an otfs transmitter generates and transmits the communication frame, and a receiver uses its properties for compensating oscillator frequency offset and channel estimation.

Inventor(s): Yujie LIU, Yong Liang GUAN, David GONZÁLEZ GONZÁLEZ

CPC Classification: H04L27/2639 ({Modulators using other transforms, e.g. discrete cosine transforms, Orthogonal Time Frequency and Space [OTFS] or hermetic transforms})

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