Multiuser interference suppression method, terminal and base station

A technology for users and base stations, which is applied in the directions of multiple use of transmission paths, baseband system components, diversity/multi-antenna systems, etc. It can solve the problem of poor channel accuracy at the receiving end, inability to support inter-cell orthogonality, and signal-to-interference-noise ratio of received signals. Not high problems, to achieve the effect of improving accuracy

Active Publication Date: 2013-09-18
HUAWEI TECH CO LTD
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Problems solved by technology

In a CoMP system, since the existing DM-RS cannot support inter-cell orthogonality, the existing DM-RS cannot well support the MU-MIMO mode of the CoMP system: when using the MU-MIMO mode of the CoMP system With the existing DM-RS, the accuracy of channel estimation at the receiving end is poor, and it is difficult to eliminate the interference between multiple users, resulting in a low signal-to-interference-noise ratio of the received signal

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  • Multiuser interference suppression method, terminal and base station
  • Multiuser interference suppression method, terminal and base station
  • Multiuser interference suppression method, terminal and base station

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0041] The technical solution of the present invention can be used in a variety of situations, such as the MU-MIMO mode of the CoMP system, the MU-MIMO mode of the LTE-A system, etc., but for more convenient description of the technical solution of the present invention, the following only uses the CoMP system The downlink transceiving process in the MU-MIMO mode is described as an example.

[0042] figure 1 is a schematic diagram of the CoMP system model provided...

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Abstract

The embodiment of the invention provides a multiuser interference suppression method, a terminal and a base station. The multiuser interference suppression method comprises the steps of layer-mapping and pre-coding business data of each user among matching users to obtain pre-encoded output data, mapping the pre-encoded output data and a public pilot frequency sequence to a port of an antenna array and sending the pre-encoded output data and the public pilot frequency sequence to each user. Correspondingly, the embodiment of the invention further provides a data receiving method, a base station and a terminal. All users among the matching users in a cell or a cooperation area use a same set of pilot frequency sequence based on the public pilot frequency sequence of the matching users. Unlike the existing technical scheme, a user-specific pilot frequency is not required in the invention. Pilot frequencies of different users must be orthogonal. Therefore, the number of matching users is not limited by the number of orthogonal pilot frequency sequences, the CoMP mode can be better supported, and the precision of channel estimation can be improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data sending method, a data receiving method, a terminal and a base station. Background technique [0002] MIMO (Multiple-Input Multiple-Out-put) technology enhancement and CoMP (Coordinated Multipoint Transmission, multi-point coordinated transmission) are to meet the LTE-A (Long Term Evolution Advanced, advanced long-term evolution) system peak An important way to improve the spectral efficiency and average spectral efficiency. Currently in the 3GPP E-UTRAN R10 version, the enhanced MIMO technology can support up to 8 layers of spatial multiplexing technology, and it can adopt a codebook-based precoding scheme or a non-codebook precoding scheme. CoMP uses the principle of distributed antennas to reduce interference through the cooperation of multiple base stations, thereby enhancing the spectral efficiency of data. As a key technology of LTE-A, CoMP can effectively improve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04B7/06H04B7/08H04L1/00H04L5/00
CPCH04B7/024H04B7/0452H04B7/0473H04L25/0204
Inventor 毕晓艳陈大庚夏斌
Owner HUAWEI TECH CO LTD
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