Multi-antenna measurement signal sending method for solving phase noise problem on the basis of fast switching

Abstract

The invention relates to method for sending multiway antenna measurement signals used for solving the phase noise problem on the basis of rapid switch and belongs to the communication technique field. The method comprises the following procedures: making certain of the time length tof the original signal sequence which will be sent; setting the number of the antennas which will be sent to be M which is a signless integral; each space of time with the number being M constitutes a time block, and the time blocks with the number being M constitute a snapshot period; in the number i which equals to 1, 2, ..., M time block, switches shits among the sending antenna k which equals to 1, 2, ..., M successively; the sending sequence of the sending antenna k is p<ki>c(t); wherein, the p<ki> is the number i element of the orthogonal sequence p<k> with the length being M; on the receiving terminal, using the local sample of the sending sequence of the sending antennas with the number being k and the receiving sequence r(t) are carried out on mutual calculation in a snapshot period, thus obtaining the channel impulse response h<k> (t) experienced by the sending sequence of the number k sending antenna. The invention allows different antenna sending signal to be affected to the same extent owing to the effect of phase noise, thus solving the effect of phase noise to the evaluation of channel matrix.

Description

technical field [0001] The invention belongs to the technical field of wireless and mobile communication, and in particular relates to a multi-antenna measurement signal sending method based on a fast switch to solve the phase noise problem. Background technique [0002] With the continuous development of wireless communication and network technology, the demand for mobile communication of the majority of users has gradually shifted from single voice service to multimedia service, thus putting forward higher requirements for the speed and reliability of the communication system. In a new communication system, using a new communication frequency band and a new key technology, it is necessary to conduct detailed research and characterization of the channel propagation characteristics of this frequency band, and then establish the channel model of the system. Multi-antenna (MIMO, Multiple-Input Multiple-Output) technology, as a solution to improve spectrum efficiency by utilizi...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to propose a multi-antenna measurement based on a fast switch to solve the phase noise problem in view of the phase noise that exists in the time division multiplexing switching method used in the existing channel measuring instrument to cause errors in the estimation of the channel matrix Signaling method

It can make the signals transmitted by different antennas be affected by phase noise basically the same, and solve the influence of phase noise on channel matrix estimation

Images