Communication method for assisting single-carrier signal cyclic shift by intelligent reflection surface

Abstract

The invention discloses a communication method for assisting single carrier signal cyclic shift by an intelligent reflection surface, and the method comprises the following steps: S1, modulating information bits by adopting a phase shift keying mode to obtain a symbol sequence, adding a cyclic prefix to the symbol sequence to obtain a symbol sequence to be transmitted, and enabling the base station to transmit a symbol sequence to be transmitted by using a single carrier technology; S2, adding different phase offsets to the sent symbol sequences through element units on the intelligent reflection surface to obtain a plurality of symbol sequences with different time offsets and cyclic shifts; S3, estimating and balancing the wireless channel to obtain an estimated wireless channel pulse response; S4, modulating the modulation information at the receiving end by using the estimated wireless channel pulse response. According to the communication method for realizing single-carrier signal cyclic shift based on the intelligent reflection surface, diversity gain can be increased, and the bit error rate of a communication system can be reduced.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a communication method using an intelligent reflective surface element unit to realize signal cyclic shift. Background technique [0002] A smart reflective surface is an engineered device comprising multiple subwavelength reflective elements with reconfigurable electromagnetic properties. The phase and amplitude of the reflections induced by the IR elements are independently controlled by software, which enables them to jointly forward the shock wave in an optimized radiation pattern and achieve different goals such as beam steering, collimation, absorption, and polarization control. By subtly reconstructing the wireless propagation environment with a large number of low-cost passive reflective elements integrated on the plane, smart reflective surfaces can significantly improve the performance of wireless communication networks, which is a revolutionary technolog...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the research is based on the elements of the intelligent reflective surface to adjust the channel from the transmitting end to the intelligent transmitting surface to the receiving end, so that the receiving end can obtain a received signal with strong energy, but in this way, the diversity cannot be fully utilized. gain

Images