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Power allocation method, device and signal processing system for uplink sounding reference signal

A technology of sounding reference signal and allocation method, applied in the field of uplink sounding reference signal power allocation method, device and signal processing system, can solve problems such as inability to realize channel estimation, and achieve the effect of small uplink channel performance error and good decoding effect

Active Publication Date: 2017-07-14
CHINA TELECOM CORP LTD
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Problems solved by technology

[0006] Although the subframe / subcarrier positions and transmission periods of all user SRSs are defined in the prior art, optimal channel estimation cannot be achieved based on these information

Method used

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  • Power allocation method, device and signal processing system for uplink sounding reference signal
  • Power allocation method, device and signal processing system for uplink sounding reference signal
  • Power allocation method, device and signal processing system for uplink sounding reference signal

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Embodiment Construction

[0018] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention.

[0019] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0020] figure 1 A schematic diagram showing the position of the SRS of the uplink user in the frame structure.

[0021] Such as figure 1 As shown, it shows the OFDM symbol structure of LTE uplink. One subframe, that is, one subframe contains 14 OFDM symbols. If there is an SRS on a certain subframe, the SRS is generally distributed in the last OFDM symbol of the subframe. , and distributed at intervals, the SRSs of different users are on...

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Abstract

The embodiment of the invention discloses a power allocation method, device and signal processing system of an uplink sounding reference signal. Wherein, the method includes constructing a user's Fourier transform matrix based on the total number of subcarriers occupied by the SRS; constructing a diagonal matrix D(p m ); According to the channel response length and the subcarrier sequence number of the SRS pilot symbol of the mth user Extract the Fourier transform sub-matrix F of the mth user from the user's Fourier transform matrix m,L ; In the case that the total power of the SRS of the mth user on the occupied subcarrier is limited, the calculation uses The smallest power of the SRS of the mth user on the occupied subcarriers; the uplink signal is transmitted based on the calculated power of the SRS of the mth user on the occupied subcarriers. The embodiments of the present invention can improve the performance of uplink channel estimation.

Description

technical field [0001] The present invention relates to an LTE (Long Term Evolution, long-term evolution) system, in particular, to a power allocation method, device and signal processing system for an uplink sounding reference signal. Background technique [0002] The third-generation mobile communication system has been widely deployed around the world. In order to meet the increasing data volume requirements of users, LTE has gradually become the focus of the mobile communication industry. LTE adopts OFDM (Orthogonal Frequency Division Multiple, Orthogonal Frequency Division Multiplexing) technology to significantly improve spectrum efficiency. 3GPP (Third Generation Partnership Project, third-generation mobile communication partnership project) technical research on LTE has been frozen in 2009, and the current research focus of the industry is on the enhancement technology of LTE. [0003] LTE uplink user data and control information are mainly carried by PUSCH (Physica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04L25/02
Inventor 曹磊赵晔陈晓冬熊尚坤林衡华
Owner CHINA TELECOM CORP LTD
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