Double-antenna double-frequency-point communication method and system used in strong reflection environment

A communication system, dual-antenna technology, applied in the directions of diversity/multi-antenna system, wireless communication, multi-frequency code system, etc., can solve the problems of wireless communication influence, frequency selective fading, space selective fading, etc.

Active Publication Date: 2021-04-02
TOEC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, wireless communication technology is applied to handheld mobile terminals. The wireless communication system technology of mobile terminals in conventional applications is relatively mature, but in some special scenarios, due to interference from terrain or environment, conventional communication systems are no longer applicable, such as In a strong reflection environment, there are space selective fading and frequency selective fading, and wireless communication will be greatly affected. Therefore, it is necessary to design a wireless communication system suitable for a strong reflection environment

Method used

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  • Double-antenna double-frequency-point communication method and system used in strong reflection environment
  • Double-antenna double-frequency-point communication method and system used in strong reflection environment
  • Double-antenna double-frequency-point communication method and system used in strong reflection environment

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[0031] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention based on specific situations.

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] The applicati...

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Abstract

The invention discloses a double-antenna double-frequency-point communication method and system used in a strong reflection environment. Carrier waves of an uplink and a downlink are located within the range of 440 MHz to 460 MHz. Frequency diversity is adopted, and the center frequency difference of the frequency diversity is equal to or larger than the depth fading bandwidth of the deck reflection model; and the carrier bandwidth of each frequency diversity is smaller than the coherent bandwidth of the facade reflection model. Spatial selective fading and frequency selective fading are resisted through frequency diversity, and it is guaranteed that the frequency diversity falls into depth attenuation at different times through setting of the center frequency difference of the frequency diversity; and meanwhile, the flatness characteristic of a channel is ensured by limiting the carrier bandwidth, interference is eliminated or weakened through the OFDM technology, and the method is suitable for a strong reflection environment.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a dual-antenna dual-frequency point communication method and system used in a strong reflection environment. Background technique [0002] At present, wireless communication technology is applied to handheld mobile terminals. The wireless communication system technology of mobile terminals in conventional applications is relatively mature, but in some special scenarios, due to interference from terrain or environment, conventional communication systems are no longer applicable, such as In a strong reflection environment, there are space selective fading and frequency selective fading, and wireless communication will be greatly affected. Therefore, it is necessary to design a wireless communication system suitable for a strong reflection environment. Contents of the invention [0003] The invention proposes a dual-antenna dual-frequency point communication metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04B7/12H04L27/26H04W24/06
CPCH04B7/04H04B7/12H04L27/26H04W24/06
Inventor 张建军董悦颜凯郝帅龙钱建增范玉进
Owner TOEC TECH
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