Method and device for selecting uncoupled antenna combination in antenna array
A technology of antenna array and antenna combination, which is applied in the directions of antenna coupling, independent non-interactive antenna combination, diversity/multi-antenna system, etc., can solve the problems of impracticality and poor performance, and achieve the effect of good performance and energy efficiency
Active Publication Date: 2016-06-08
ALCATEL LUCENT SHANGHAI BELL CO LTD
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Problems solved by technology
In addition to the fact that the selected receive antenna may be coupled, its method of antenna subset selection has several other disadvantages
For example, the selected receive antenna cannot be used as a transmit antenna because of coupling; the number of receive RF links needs to be determined, and this number varies with propagation conditions; and due to coupling between receive antennas, more receive RF links Potentially worse performance
Furthermore, although theoretical models have been proposed to calculate receive coupling antennas, this method is not practical due to the variation of self and mutual impedances with environmental factors such as temperature and humidity
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[0019] In order to better understand the spirit of the present invention, it will be further described below in conjunction with some preferred embodiments of the present invention.
[0020] In a time-division duplex (TDD, time-division duplex) system, wireless channels are mutual, that is, the transmitting wireless channel and the receiving wireless channel can be transposed to each other. For a small transceiving device using a compact antenna array, when all the antennas in the antenna array work simultaneously, there will be mutual coupling among the antennas, resulting in energy drop.
[0021] The method and device for selecting an antenna for transmitting and receiving data from a compact antenna array of the present invention can solve the above-mentioned problems. For example, the method for selecting an antenna for transmitting and receiving data provided by an embodiment of the present invention includes generating a set of all uncoupled antenna combinations in the a...
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The invention provides a method and an apparatus for selecting antennas used for transmitting and receiving data from an antenna array. According to an embodiment of the invention, the method comprises following steps: generating a set of combinations of all uncoupled antennas in the antenna array; selecting an uncoupled antenna combination Ss from the set, wherein the f (.) is an indicator function required to be maximized; and performing channel estimation on an uncoupled antenna combination St in the set. Although the selection is based on receiving antennas, the selected antennas can be used for transmitting and receiving data and do not result in complex calculation and large system overhead. And the apparatus has good energy efficiency and performance.
Description
technical field [0001] The present invention relates to a method and a device for selecting an antenna combination, in particular to a method and a device for selecting a non-coupling antenna combination in an antenna array. Background technique [0002] It is well known that mutual coupling between antennas reduces energy efficiency for closely spaced antenna arrays. With the trend of miniaturization of wireless communication products, the demand for microminiature and compact transceivers is becoming increasingly strong. However, how to avoid the performance degradation caused by the mutual coupling between the antennas in these small transceivers is also a difficult problem in the industry. [0003] To solve this problem, the article "Mutual coupling cancellation for compact transmit antenna arrays" (J.ChenandK.Wu, "Mutualcouplingcancellationforcompacttransmitantennaarrays", inProc.IEEEWirelesCommunicationsandNetworkingConf., Mar.2011) discloses a method, which is to tra...
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IPC IPC(8): H04B7/04H04L25/02H01Q21/28H01Q1/52
CPCY02D30/70
Inventor 陈晋辉
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD