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A training sequence design method in a user-centered multi-base station cooperative system

A technology of training sequence and cooperation system, which is applied in the direction of baseband system components, transmission system, digital transmission system, etc., and can solve the problem of large number of training sequences

Inactive Publication Date: 2017-04-12
BEIHANG UNIV +1
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Problems solved by technology

However, the number of mutually orthogonal training sequences required by the system will become quite large, and the resulting large amount of training overhead is unbearable for practical systems

Method used

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  • A training sequence design method in a user-centered multi-base station cooperative system
  • A training sequence design method in a user-centered multi-base station cooperative system
  • A training sequence design method in a user-centered multi-base station cooperative system

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Embodiment Construction

[0051] The present invention proposes a user-centered training sequence design method in a multi-base station cooperative system. The present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings. The flow chart is as follows figure 2 shown.

[0052] The system in the embodiment includes 7 single-antenna base stations 7 single-antenna users {MS 1 , MS 2 ,...,MS 7}, the clustering of the system has been completed, for each user MS k ,(k=1,2,…7), the set of base stations in a specific cooperative cluster respectively Apply the design method of the training sequence proposed by the present invention, comprise the following steps:

[0053] Step 1: Calculate the base station-user correlation matrix A, the base station-base station correlation matrix G, and the user-user correlation matrix H according to the clustering results of the system.

[0054] (1) Base station-user correlation matrix A is a 7×7 dimension 01...

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Abstract

The invention discloses a training sequence design method in a multi-base-station cooperative system with users as centers, and belongs to the field of wireless communication technologies. According to the method, firstly, an incidence matrix A between base stations and the users, an incidence matrix G among the base stations and an incidence matrix H among the users are calculated according to a clustering result of the multi-base-station cooperative system; then, uplink training sequences and downlink training sequences of the multi-base-station cooperative system are designed, so that the expenditure of training is low. An integer addition operation and an integer sorting operation are mainly used, so that complexity is low, and the training sequence design method is suitable for the characteristic of real-time and dynamic changes of the clustering result in the multi-base-station cooperative system with the users as the centers, can timely design and finish the downlink training sequences and uplink training sequences of the system after clustering is finished each time and is beneficial to being practically applied.

Description

technical field [0001] The invention belongs to the field of wireless communication, is mainly oriented to a user-centered multi-base station cooperative system, and specifically relates to a training sequence design method in a user-centered multi-base station cooperative system. Background technique [0002] Multi-base station cooperation, or Coordinated Multi-Point (CoMP, Coordinated Multi-Point) transmission technology is a key technology for improving the spectral efficiency of cellular networks in wireless communications. In the actual deployment of CoMP technology, the cooperative cluster composed of several base stations is statically configured and has no overlap, so users located at the edge of the cooperative cluster will suffer strong out-of-cluster interference. In order to reduce interference and improve the communication quality of cluster edge users, a user-centered dynamic clustering method can be considered, that is, according to the channel conditions of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04L5/00
Inventor 陈致霖侯雪颖杨晨阳王刚雷鸣
Owner BEIHANG UNIV
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