公开(公告)号：US20230179268A1

公开(公告)日：2023-06-08

申请号：US17928431

申请日：2022-04-13

Applicant: SOUTHEAST UNIVERSITY

Inventor： Yong ZENG ,  Haiquan LU

IPC: H04B7/0426 ,  H04B7/06

CPC classification number: H04B7/043 ,  H04B7/0617

Abstract: The present invention discloses a channel equalization-free single-carrier broadband transmission method, including the following steps: obtaining a number of temporal-resolvable multi-paths, and delays and channel gain vectors corresponding to the multi-paths based on a channel impulse response; deliberately introducing, by a transmitter, a corresponding delay for a symbol sequence, so as to perform delay compensation, so that all multi-path signal components arrive at a receiver simultaneously and constructively after propagating over a time-dispersive channel, thereby avoiding inter-symbol interference in broadband transmission; and utilizing, by the transmitter, multiple antennas to perform path-based beamforming design. A time-dispersive channel can be transformed into a frequency-flat channel by means of the path-based ZF beamforming and delay alignment modulation. The present invention further proposes a channel equalization-free single-carrier broadband transmission system. In the present invention, with delay alignment modulation and the path-based beamforming, the issue of inter-symbol interference in broadband communications is resolved, without requiring the channel equalization or multi-carrier transmission, thereby achieving the low-complexity single-carrier broadband communication.