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MIMO antenna selection and data transmission method and evaluation method under non-perfect channel information

A data transmission method and imperfect channel technology, applied in digital transmission systems, radio transmission systems, channel estimation, etc., can solve problems such as channel estimation errors and quantization errors, reduce accuracy, reduce implementation complexity and resource consumption , the effect of simplifying the amount of calculation

Inactive Publication Date: 2017-11-28
SHANGHAI NORMAL UNIVERSITY +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] However, in some practical systems, especially frequency division duplex systems, channel estimation error and quantization error will exist simultaneously

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  • MIMO antenna selection and data transmission method and evaluation method under non-perfect channel information
  • MIMO antenna selection and data transmission method and evaluation method under non-perfect channel information
  • MIMO antenna selection and data transmission method and evaluation method under non-perfect channel information

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Embodiment Construction

[0050] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0051] The working principle of the present invention is that the transmitting end uses channel estimation technology to obtain estimated channel information, then the receiving end selects the antenna with the largest gain to receive the signal, and then quantizes the selected estimated channel vector and feeds it back to the transmitting end through the uplink channel. Finally, the transmitting end uses the obtained feedback channel information to design the linear precoding of the useful signal.

[0052] The MIMO antenna selection scheme under the imperfect channel information of t...

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Abstract

The invention relates to an MIMO antenna selection and data transmission method and evaluation method under non-perfect channel information. Selection and transmission processes comprise steps that S1: M sending antennas are arranged on a sending end and N receiving antennas are arranged on a receiving end; S2: the receiving end generates an estimation value of a channel matrix according to orthogonal pilot quantity, emission power and antenna quantity; S3: the receiving end selects an antenna with the biggest gain to receive signals and generates a channel estimation vector of the antenna according to the estimation value of the channel matrix; and S4: the receiving end carries out quantification on a unit vector of channel estimation vectors by use of random vector quantification mode, and corrects received sending signals to obtain receiving signals according to quantification results and the channel estimation vectors. Compared with the prior art, information of the orthogonal pilot quantity, the emission power and the antenna quantity is estimated according to channels, and the antenna with the biggest gain is selected to receive signals, so it is well achieved that complexity and resource consumption are reduced.

Description

technical field [0001] The invention relates to a MIMO antenna selection technology, in particular to a MIMO antenna selection and data transmission method and evaluation method under imperfect channel information. Background technique [0002] MIMO technology has become a hot technology in the field of wireless communication application and research because of its many advantages such as improving spectrum efficiency. Antenna selection techniques include receive antenna selection, transmit antenna selection, and combined transceiver antenna selection. [0003] The implementation complexity and hardware resource consumption of MIMO technology will increase exponentially with the increase of the number of antennas, and the antenna selection technology will reduce the implementation complexity and resource consumption while retaining the advantages of MIMO technology. [0004] In some practical systems, channel estimation techniques and limited feedback schemes are usually us...

Claims

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Application Information

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IPC IPC(8): H04B7/0413H04B7/08H04L25/02H04L25/03
CPCH04B7/0413H04B7/0814H04L25/0204H04L25/0224H04L25/0256H04L25/0391
Inventor 彭张节彭张林冯伟
Owner SHANGHAI NORMAL UNIVERSITY
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