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Design method of transceiver in heterogeneous network

A heterogeneous network and design method technology, applied in space transmit diversity, error prevention/detection through diversity reception, diversity/multi-antenna system, etc., can solve the problem of a large number of antennas, etc.

Active Publication Date: 2014-04-02
BEIJING UNIV OF POSTS & TELECOMM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: how to solve the problem that the number of antennas is large

Method used

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  • Design method of transceiver in heterogeneous network
  • Design method of transceiver in heterogeneous network
  • Design method of transceiver in heterogeneous network

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Experimental program
Comparison scheme
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Embodiment 1

[0043] Assume that the system has 1 macro base station, and the macro base station serves K macro cell users; C small base stations, and each small base station serves a small cell user. For ease of presentation, each user receives an independent data stream. The macro base station has C+K transmit antennas, the small base station has K transmit antennas, and each user (including small cell users and macro cell users) has C receive antennas.

[0044] The specific system model diagram is as follows figure 1 As shown, among them, M m , M p are the number of antennas of the macro cell base station and the number of antennas of the small cell base station, respectively, and N is the number of antennas of each user.

[0045] Among them, the design method of the transceiver under the heterogeneous network in Embodiment 1 eliminates interference through three parts, and the method includes:

[0046] 1. Eliminate interference from small base stations to macro cell users.

[0047]...

Embodiment 2

[0078] The following method can also be used to eliminate the interference of the small base station to the macro cell user, so the second embodiment of the present invention provides a design method of a transceiver under a heterogeneous network, including:

[0079] Embodiment 2 uses the same number of antennas as Embodiment 1, but the methods for eliminating interference are different. For any heterogeneous network, there are C small cells and K macro cell users, where M p =K(M p is the number of antennas of the small base station), N=C (N is the number of antennas of the macro cell user). Here, a macro cell user and a small base station are defined as a pair, then all small base stations and macro cell users can be converted into three pairs and two pairs, that is, into several K=C=3, and this is structure 1. And several cases of K=C=2 are recorded as structure 2.

[0080] First of all, for the case of K=C, it must be transformed into several structures 1 and 2.

[0081...

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Abstract

The invention provides a design method of a transceiver in a heterogeneous network. The design method comprises the following steps: acquiring a pre-coding matrix of a small base station and a decoding matrix of a user of a macro cell, acquiring a decoding matrix of a user of a small cell according to the interference of the pre-coding matrix of the small base station in zero-forcing the small base station, calculating according to the decoding matrix of the user of the small cell and the decoding matrix of the user of the macro cell so as to obtain a pre-coding matrix of the macro base station. According to the method, by acquiring the pre-cording matrix of the small base station and the decoding matrix of the user of the small cell, the interference of the small base station on the user of the small cell is eliminated, due to adoption of the decoding matrix of the user of the small cell, the interference of the small base station on the user of the small cell is eliminated, due to adoption of the pre-coding matrix of the macro base station, the interference of the macro base station on all users is eliminated, and moreover a small number of antennas are used in the method.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a design method of a transceiver in a heterogeneous network. Background technique [0002] With the rapid development of wireless communication technology, interference alignment has an important contribution to the elimination of interference. [0003] The current scheme includes: for the interference alignment under the general heterogeneous network, including C small cells (each small cell has one user) and 1 macro cell (with K users), and C small cell users and K The channel coefficient of a macro cell user is constant. For the OSG mode, the current solution has a large number of antennas regardless of the antenna configuration and the number of data streams of each user. Contents of the invention [0004] (1) Solved technical problems [0005] The technical problem solved by the invention is: how to solve the problem of a large number of antennas. [0006...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04B7/04
Inventor 李立华靳进王昕赵晶晶梁毅
Owner BEIJING UNIV OF POSTS & TELECOMM