Design method of millimeter wave communication codebook

A design method and millimeter-wave technology, applied in space transmit diversity, radio transmission systems, electrical components, etc., can solve the problems of inapplicability and difficulty of millimeter-wave large-scale antenna array communication systems, and difficulty in realizing ideal codewords.

Active Publication Date: 2019-03-19
SOUTHEAST UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

Although the hybrid precoding structure can reduce the RF link overhead, it becomes more difficult to achieve the ideal codeword under the hybrid precoding structure
Although the actual codeword design scheme of orthogonal matching pursuit proposed in [1] can realize the ideal codeword, it requires a large number of radio frequency links to realize the wide beam of the upper layer.
This is not applicable in millimeter wave large-scale antenna array communication systems
On the other hand, practical phase shifters generally have limited quantization bits, which makes it difficult to achieve ideal codewords under hybrid precoding architectures

Method used

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  • Design method of millimeter wave communication codebook
  • Design method of millimeter wave communication codebook
  • Design method of millimeter wave communication codebook

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Embodiment Construction

[0117] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0118] (1) if figure 1 As shown, the millimeter wave communication system model used in the present invention is described as follows:

[0119] The signal is sent out through the antenna array after digital precoding, radio frequency link, and analog precoding at the sending end. After the signal is transmitted in the wireless channel, it reaches the receiving end, and the signal received by the antenna array at the receiving end undergoes analog combination, radio frequency link and digital combination to obtain the final received signal. The antenna arrays at the sending end and the receiving end are both uniform linear arrays with half-wavelength intervals, respectively N t and N r root antenna. Then the received signal can be expressed as:

[0120]

[0121] Among them, f BB , F RF , H, W RF and w BB R...

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Abstract

The invention discloses a design method of millimeter wave communication codebook. The method comprises two steps of ideal codeword design and actual codeword design. The invention fully studies the codeword design method of the millimeter wave communication system, and provides an improved method for the ideal codeword design and the actual codeword design. In the ideal codeword design, a designthat is easy to calculate and has a closed expression is provided. In the actual codeword design, a fast design method is provided for a millimeter wave hybrid precoding architecture and a quantized phase shifter. The performance of the ideal codeword designed by the invention is superior to the prior art. Meanwhile, the performance of the actual codeword designed by the invention is superior to the prior art under the condition of a small number of radio frequency links.

Description

technical field [0001] The invention belongs to the field of millimeter wave wireless communication, and relates to a design method of a millimeter wave communication codebook. Background technique [0002] With the popularity of mobile terminal devices, people's demand for wireless communication is also increasing. In order to meet people's increasing demand for data traffic, millimeter wave communication (30GHz-300GHz) has attracted widespread attention because of its rich spectrum resources and extremely high transmission rate. [0003] Due to the higher carrier frequency than the existing microwave frequency band communication, millimeter wave communication has greater path loss when propagating in space. On the other hand, higher carrier frequency enables mmWave communication with smaller antenna size. This enables a larger-scale antenna array to be packaged in a limited area, and the gain of the antenna array is used to compensate for the channel path loss. Existing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0456H04B7/06
CPCH04B7/0456H04B7/0617
Inventor 戚晨皓陈康建
Owner SOUTHEAST UNIV
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