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Millimeter wave lens antenna array communication system channel estimation method

A lens antenna and channel estimation technology, applied in the field of channel estimation, can solve problems such as difficult performance evaluation, low accuracy of channel estimation, and high complexity

Active Publication Date: 2021-03-26
HARBIN INST OF TECH +1
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Problems solved by technology

[0011] The present invention aims to solve the problems of low channel estimation accuracy, high complexity, poor scene adaptability and difficult performance evaluation caused by the fact that the number of radio frequency chains is far less than the number of antennas in the millimeter wave lens antenna array communication system, thereby providing a millimeter wave Channel Estimation Method for Lens Antenna Array Communication System

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  • Millimeter wave lens antenna array communication system channel estimation method
  • Millimeter wave lens antenna array communication system channel estimation method
  • Millimeter wave lens antenna array communication system channel estimation method

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specific Embodiment approach 1

[0031] Specific implementation mode 1. Combination Figure 1 to Figure 7Illustrate this specific embodiment, millimeter wave lens antenna array communication system channel estimation method, it comprises the following steps:

[0032] Step 1: Based on the SV channel model and the lens antenna equivalent model, the channel h between the base station and the user is calculated by formulas (1)-(10) b modeling.

[0033] Step 2: Utilize the channel vector h b The sparsity of the beam domain channel estimation problem is transformed into recovering the sparse signal h from the baseband signal r by formulas (11)-(13) using the compressed sampling method based on PSN b The problem.

[0034] Step 3: Calculate h based on formulas (14)-(19) b The p-th multipath component h p The expectation of the energy distribution, so as to obtain the support Ω of the p-th multipath component according to a certain threshold p estimate.

[0035] Step 4: Based on the support estimation result Ω ...

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Abstract

The invention discloses a millimeter wave lens antenna array communication system channel estimation method, relates to the technical field of information and communication, and aims to solve the problems of low channel estimation precision, high complexity, poor scene adaptability and difficulty in performance evaluation due to the fact that the number of radio frequency chains in the millimeterwave lens antenna array communication system is far less than that of antennas. The method mainly comprises a beam space channel vector support acquisition method, a DOA and complex gain estimation method according to a preliminary recovery result of a sparse beam space channel, a multipath inter-component interference elimination method based on orthogonalization processing, and a system performance evaluation and parameter design method. Simulation results show that compared with an existing method, the method is higher in estimation precision, lower in complexity, less in environment priorhypothesis and higher in method performance predictability.

Description

technical field [0001] The invention relates to the technical field of information and communication, in particular to a channel estimation technology. Background technique [0002] With the rapid development of wireless communication technology, the combination of wireless communication and people's work and life is getting closer. The construction and evolution of wireless networks have greatly promoted the development of the entire society. In this context, the demand for wireless data services is growing rapidly. Authoritative organizations and scholars predict that in the next 10 years, data services will grow exponentially at a rate of at most twice a year. Future communication systems urgently require increasing the capacity of the entire wireless communication network, expanding and utilizing bandwidth resources more efficiently, and greatly improving spectral efficiency. [0003] In order to meet these challenges, many scholars have proposed many theories and tec...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02
CPCH04L25/024
Inventor 贾敏孙锦添郝志松刘建成郭庆顾学迈刘晓锋
Owner HARBIN INST OF TECH
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