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Multi-antenna transmission method and system

A multi-antenna transmission and each antenna technology, applied in diversity/multi-antenna systems, space transmit diversity, error prevention/detection through diversity reception, etc., can solve the problems of reduced spectrum utilization and increased pilot overhead, etc., to achieve The effect of reducing pilot overhead and improving spectrum utilization

Active Publication Date: 2014-07-16
ZTE CORP
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Problems solved by technology

[0003] Theoretically, the number of antennas, that is, the increase of the array elements in the antenna array will improve the spectral efficiency. However, since the pilots of the array elements in the antenna array are required to be orthogonal to each other, with the increase of the array elements in the antenna array, the pilot frequency occupancy Spectrum resources will inevitably increase accordingly, resulting in increased pilot overhead and reduced spectrum utilization

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  • Multi-antenna transmission method and system
  • Multi-antenna transmission method and system
  • Multi-antenna transmission method and system

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specific Embodiment 1

[0057] In this embodiment, the sender has eight ports, and each port corresponds to an antenna element. When sending data, the eight ports are divided into two groups, and data is sent alternately.

Embodiment 1

[0058] image 3 It is a schematic flow chart of a multi-antenna transmission method in Embodiment 1 of the present invention, as image 3 As shown, the multi-antenna transmission method in Embodiment 1 of the present invention includes the following steps:

[0059] Step 31: Divide the eight ports into two antenna array subsets, and each antenna array subset includes four ports.

[0060] In this embodiment, the eight ports of the transmitter are respectively defined as ports 0-7, wherein ports 0-3 constitute the antenna array subset 1, and ports 4-7 constitute the antenna array subset 2.

[0061] Step 32: In two consecutive time periods, respectively transmit the pilots corresponding to the two antenna array subsets.

[0062] Correspondingly, the pilots are also divided into two groups, one group is R0-R3, corresponding to ports 0-3 in antenna array subset 1, and the other group is R4-R7, corresponding to ports 0-3 in antenna array subset 2. For ports 4 to 7, the length of t...

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Abstract

The invention discloses a multi-antenna transmission method, which comprises that: a sender performs antenna array subset division on an antenna array; a sender configures pilot frequency according to the divided antenna array subsets and sends the antenna array subsets in group; and sender configures data sending parameters, and sends data according to the configured data sending parameters and the configured pilot frequency. The invention correspondingly discloses a multi-antenna transmission system, which comprises an antenna array subset division unit, a pilot frequency configuration unit, a parameter configuration unit and a sending unit. The multi-antenna transmission method and the multi-antenna transmission system for dividing the antenna array subsets from an antenna array element and sending the pilot frequency of each antenna array subset according to the divided antenna array subsets can meet the compatibility requirement of an LTE-Advanced system and an LTE system without changing an LFE frame structure, and can reduce pilot frequency overhead and improve spectrum utilization rate by sending the data with more antennas.

Description

technical field [0001] The present invention relates to data transmission technology in the field of wireless communication, in particular to a multi-antenna transmission method and system. Background technique [0002] Multi-antenna technology is a commonly used technology in wireless communication systems, which can be divided into three categories according to the principle, namely: space multiplexing, space diversity and beam forming. Generally, for these three technical applications, it is necessary to know the channel state information between the transmitting and receiving antenna pairs, that is, the transmitting side needs to configure mutually orthogonal pilots (also called reference symbols or training sequences) for the elements of the transmitting antenna array, These pilots can be orthogonal in frequency, time, or codeword, so that the receiver can use the orthogonality of these pilots to estimate the distance between any element in the receiving antenna array a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04L1/06
Inventor 李峰田开波赵楠朱常青孙云锋姜静彭爱华魏民牛军涛
Owner ZTE CORP
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