Method and system for realizing antenna selection in MIMO relay system

A relay system and antenna selection technology, which is applied in the transmission system, radio transmission system, baseband system components, etc., can solve the problems of high cost, increase the design complexity of receiving nodes, etc., and achieve the effect of reducing design complexity

Inactive Publication Date: 2012-02-01
ZTE CORP
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  • Abstract
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Problems solved by technology

This will greatly increase the design complexity of the receiving node; in addition, since the BF technology requires the transmitting node to use all antennas to transmit signals simultaneously, it is required that the transmitting node not only has multiple antennas, but also has multiple radio frequency links. too expensive

Method used

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  • Method and system for realizing antenna selection in MIMO relay system
  • Method and system for realizing antenna selection in MIMO relay system
  • Method and system for realizing antenna selection in MIMO relay system

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Embodiment Construction

[0051] Generally speaking, in the MIMO relay system, in order to reduce the implementation complexity of the BF algorithm, the transmit antenna selection operation based on limited feedback can be performed. For a network where both the source node and the relay node have two or more antennas or antenna groups, the following operations can be performed:

[0052] The destination node selects the transmit antenna for the relay node, and indicates the selected transmit antenna index to the relay node; the destination node selects the transmit antenna for the source node, and indicates the selected transmit antenna index to the source node, or, the relay node The node selects the transmit antenna for the source node, and indicates the selected transmit antenna index to the source node;

[0053] The relay node performs signal transmission using the transmission antenna indicated by the destination node, and the source node performs signal transmission using the transmission antenna...

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Abstract

The invention discloses a method and a system for realizing antenna selection in an MIMO relay system. Antenna selection is respectively carried out on a relay node and a source node according to a signal to noise ratio; the corresponded relay node and the corresponded source node are respectively notified by the selected transmitting antennas; and then the relay node and the source node respectively use the notified transmitting antennas to carry out signal emission. According to the method and the system provided in the invention, it can be ensured that a relay node and a source node only select one antenna among a plurality of antennas for signal emission, wherein the relay node and the source node are utilized as emission nodes; and a feedback information contents, which is obviously less than that in a traditional technical scheme, can be generated, so that a design complexity can be effectively reduced.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and a system for realizing antenna selection in a multiple-input multiple-output (MIMO) relay system. Background technique [0002] The relay technology improves the transmission rate and transmission reliability of the wireless link by deploying several relays near the sending node and the receiving node, and can increase the coverage and robustness of the system. By making full use of the broadcast characteristics of wireless channels, this technology not only reduces the power consumption and bandwidth of terminal nodes, but also significantly improves the spectral efficiency, throughput, and capacity of the system without increasing the complexity of the system. Relay technology has broad application prospects in wireless sensor networks (WSN), wireless Ad Hoc networks, wireless Mesh networks, and cellular networks, and will become a key technology for the next generation o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04L25/03H04L25/02
CPCH04B7/0608
Inventor 梁枫毕峰吴栓栓袁明杨瑾李国红
Owner ZTE CORP
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