Multi-antenna selectivity transmit-diversity method of wireless OFDM/TDD system

A technology of transmit diversity and selectivity, applied in diversity/multi-antenna systems, space transmit diversity, wireless communication, etc., can solve problems such as unsatisfactory diversity effects, achieve the effect of increasing signal receiving strength and improving communication quality
CN101710839AInactive Publication Date: 2010-05-19无锡德通数据无线通信科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
无锡德通数据无线通信科技有限公司
Publication Date
2010-05-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a multi-antenna selectivity transmit-diversity method of a wireless OFDM / TDD system, comprising the following steps: receiving intensity detection: a base station receiving unit carries out receiving intensity measurement to the received signals of the different antennas; antenna serial number feedback; the base station receiving unit carries out ordering to the receiving signal intensity of each antenna and feeds the ordering result back to a base station control unit; selectivity transmission: the base station control unit selects a transmission antenna to carry out signal transmission according to the ordering result. In the invention, the physical layer of the base station carries out detection ordering to an ascending receiving signal of each antenna, so as to dynamically select the transmitter antenna, increase the signal receiving intensity of a terminal side, achieve the selective transmit-diversity purpose and improve the communication quality.
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Description

technical field

[0001] The invention relates to a multi-antenna transmission technology in wireless communication, in particular to a multi-antenna transmission diversity method for an OFDM (orthogonal frequency division multiplexing) system base station in a TDD (time division duplex) mode. Background technique

[0002] The main factor affecting the signal quality in the wireless OFDM / TDD system is channel fading, and the multi-antenna technology in wireless communication can effectively combat the problem of wireless channel fading. The simplest of these is transmit and receive diversity. The general transmit diversity adopts multi-antenna (equal gain) space diversity, so that the receiving end can obtain a certain combination gain, which is relatively simple to realize, but the diversity effect is sometimes not ideal. Contents of the invention

[0003] In view of the above problems, the present invention provides a multi-antenna selective transmission diversity method ...

Claims

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