Chanel estimating method in long-term evolution system based on specific reference signal of terminal

Abstract

The invention relates to a channel estimating method, particularly to a channel estimating method in a long-term evolution system based on a specific reference signal of a terminal. The invention discloses a channel estimating method in a long-term evolution LTE system based on a specific reference signal of a terminal, wherein the method comprises the steps of: estimating the channel of subcarriers at the reference signal by the specific reference signal UE-specific RS of the terminal on a distributed resource blocks according to the distribution conditions of the resource block users; filling the channel estimating value of the reference signal of the undistributed resource block based on the channel estimating value of the subcarrier at the reference signal; and estimating the channel of the data subcarrier according to the channel estimating value on the reference signal subcarrier on the processed full bandwidth. By the method disclosed by the invention, the channel estimating and processing process is in accordance with that of the specific reference signal of cell, and the complexity on further treatment and control can be reduced.

Description

technical field [0001] The present invention relates to a channel estimation method, in particular to a channel estimation method based on a terminal-specific reference signal (UE-specific RS) in a long-term evolution (LTE, Long Term Evolution) system. Background technique [0002] In the Long Term Evolution (LTE, Long Term Evolution) system, due to the adoption of Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) technology as its key technology, it is necessary to pass Cell-specific (Ce11-specific) and User-specific (UE -specific) reference signal (RS) for channel estimation, but in the LTE system, UE-specific reference signal and Ce11-specific reference signal are distributed differently on the system bandwidth: Ce11-specific reference signal is on the system bandwidth Continuous distribution, while UE-specific reference signals may have discontinuous distribution according to different user bandwidth configurations. The common ...

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Problems solved by technology

[0002] In the Long Term Evolution (LTE, Long Term Evolution) system, due to the adoption of Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) technology as its key technology, it is necessary to pass Cell-specific (Ce11-specific) and User-specific (UE -specific) reference signal (RS) for channel estimation, but in the LTE system, UE-specific reference signal and Ce11-specific reference signal are distributed differently on the system bandwidth: Ce11-specific reference signal is on the system bandwidth Continuous distribution, while UE-specific reference signals may have discontinuous distribution according to different user bandwidth configurations. The common solution for channel estimation of UE-specific reference signals in the industry is to process UE-specific reference signals separately, but this The practice will lead to two sets of processing procedures, that is, separate processing interfaces and processing functions are required for channel estimation Ce11-specific and UE-specific, which will increase the complexity of physical layer processing and control

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