Wideband channel parameter extraction method, wideband channel simulation method and apparatus thereof

Abstract

The invention discloses a method for extracting parameters of wideband channels and a device thereof, and a method for realizing wideband channel emulation of channel modeling and a device thereof based on the channel parameters obtained by the method for extracting parameters of wideband channels. The method for extracting parameters of wideband channels comprises the following steps: a noise bottom is calculated according to the measured channel impulse response; a signal component threshold is determined according to the noise bottom; local maximum points and local minimum points are searched in the effective signal components divided by the signal component threshold, and the channel impulse response between two adjacent local minimum points of the local maximum point is taken as a component channel; and channel parameters are extracted on each channel in parallel. Due to the invention of the method, the slow velocity of convergence of the parameter extraction of wideband channels and the extraction accuracy can be improved; using the extracted channel parameters for channel emulation can respond the characteristics of the practical communication environment accurately; and the implementing complexity of the method is low.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a wideband channel parameter extraction method and its device, and a wideband channel simulation method and its device. Background technique [0002] In order to meet the business requirement of high data rate (100Mbps-1Gbps) provided by the wireless communication system of the next generation, the bandwidth of the system will be extended to 20MHz-100MHz. The increase in signal bandwidth increases the number of multipaths that can be separated by the system, which poses new challenges for wireless systems that will be applied to such wide-band channels. Therefore, only after fully studying and understanding the broadband channel characteristics of the designed system, can we adopt the appropriate wireless technology, thereby fully improving the system capacity and further optimizing the system performance. [0003] The measurement of wireless propagation characteristics in ...

AI Technical Summary

Problems solved by technology

In Europe, the SCM (Spatial Channel Model) and SCME (Spatial Channel Model Extension) models developed by 3GPP (The 3rd Generation Partnership Project) and the WIM (WINNER Interim Model) model proposed by WINNER (Wireless World Initiative New Radio) include The spatial information of the channel, the channel is modeled as consisting of multiple clusters with angular expansion, but in order to simplify the model, these clusters have no delay expansion, which will make the model unable to correctly reflect the nature of signal propagation in the actual channel

[0005] In summary, the broadband channel parameter extraction method in the prior art has high complexity, slow convergence speed, and low precision; the broadband channel modeling method in the prior art cannot truly and accurately reflect the characteristics of the actual propagation environment

Images