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60GHz multi-antenna system for shading and eluding and signal processing method thereof

A multi-antenna system and signal processing technology, applied in the field of communication, can solve the problems of low efficiency and high cost

Inactive Publication Date: 2010-10-20
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Addresses the problem that existing methods are costly and inefficient against frequent lightweight occlusions

Method used

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  • 60GHz multi-antenna system for shading and eluding and signal processing method thereof
  • 60GHz multi-antenna system for shading and eluding and signal processing method thereof
  • 60GHz multi-antenna system for shading and eluding and signal processing method thereof

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Embodiment Construction

[0045] The present invention is described in further detail below in conjunction with accompanying drawing:

[0046] see figure 1 , 2 , an example is given below to illustrate the effect that the occlusion avoidance method adopted by the multi-antenna system of the present invention can achieve in combating occlusion. Without loss of generality, it is assumed that the transmitting and receiving antenna arrays have 32 and 10 antenna elements respectively, and there are only 10 parallel available radio frequency links at both the transmitting and receiving ends. The multi-antenna system needs to adaptively select 10 transmit antennas from 32 transmit antennas and all receive antennas to form a 10×10 antenna subarray, so that its corresponding subchannel matrix is ​​in the antenna subarray of the same dimension has the largest principal singular value in , thus obtaining a set of preferred antenna subarrays for high-speed data transmission without occlusion. After that, it is ...

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Abstract

The invention discloses a 60GHz multi-antenna system for shading and eluding and a signal processing method thereof. Under the condition that no shading happens, the system determines a preferred antenna sub-array by optimization and selection of antenna sub-arrays, and performs high-speed data transmission by combining beam-forming technology; and when the preferred antenna array is shaded by a barrier, the system evaluates elements in preferred antenna selection history according to the shading effect of the barrier on the antenna array, and selects one element as the preferred antenna sub-array for replacing a spare antenna subset. The selection of the spare antenna sub-array enables the system to automatically avoid the barrier so as to maintain the connectivity of a link and the performance of the system as far as possible. When the shading is eliminated, the optimal performance can be recovered when the shading does not exist by switching to the primary preferred antenna subset. The shading and eluding method implemented by the system disclosed by the invention does not need channel estimation or extra iterative process, and has simple calculation and quick switch. Simulation experiments show that the spare antenna searching method is efficient under the condition of great optimized search space, can quickly make response according to the barrier, and improves the robustness of the system during shading.

Description

Technical field: [0001] The invention belongs to the field of communication, and relates to a multi-antenna system and a signal processing method for combating lightweight occlusion, in particular to a fast method for combating lightweight occlusion based on alternative antenna subset selection in a 60GHz system. Background technique: [0002] In a 60GHz communication system, the connectivity of a wireless link is easily affected by obstacles. Some occlusions occur over a longer period of time and over a larger space (such as occlusions caused by improper placement of indoor furniture or wall barriers), while other occlusions occur relatively short-term and on a smaller scale (such as those caused by the movement of people or pets). temporarily blocked). In some applications, short signal interruptions cannot be received, such as point-to-point uncompressed high-definition television signal transmission, occlusion will cause temporary interruption of high-speed signal flow,...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B7/08
Inventor 董可廖学文朱世华任品毅
Owner XI AN JIAOTONG UNIV
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