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Signal frame receiving method for aviation telemetering channel

A receiving method and signal framing technology, applied in channel estimation, shaping network in transmitter/receiver, multiplexing communication, etc. Effect

Inactive Publication Date: 2017-04-19
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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  • Abstract
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Problems solved by technology

[0011] 3) When the time length of the cyclic prefix of the time-domain frame structure is equal, the anti-multipath interference capabilities of the two are equivalent, and the signal processing complexity is equivalent

Method used

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  • Signal frame receiving method for aviation telemetering channel
  • Signal frame receiving method for aviation telemetering channel
  • Signal frame receiving method for aviation telemetering channel

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Embodiment Construction

[0045]The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described here are only used to explain the present invention, not to limit the present invention. Those skilled in the art will recognize how best to implement the described functionality presented throughout this application depending on the particular application and any overall design constraints imposed on the overall system.

[0046] The signal frame structure based on single-carrier frequency domain equalization consists of a frame header and a frame body, such as figure 1 shown.

[0047] The frame header part includes a total of 3 training sequences (Training Sequence I, Training Sequence II, Training Sequence III) and 1 piece of system information, which are used for system initial synchronization and transmission format combination identifier (Transport FormatCombination Indicator, TFCI) an...

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Abstract

The invention discloses a signal frame receiving method for an aviation telemetering channel. The method comprises: with a training sequence I, a training sequence II, a training sequence III in a frame header, system initial synchronization during channel access is carried out; accessed system working information is determined by using system information in the frame header; wave carrying, regular tracking and compensation, channel estimation, and frequency domain equalization are carried out by using training sequences IV, business information, and training sequences V of all data segments of a frame body part; and demodulation and decoding are carried out on business information of all data segments of the frame body part. Therefore, a problem of realization of reliable transmission of telemetering information under high-dynamic multi-path fading channel can be solved.

Description

technical field [0001] The invention relates to the technical field of aeronautical wireless communication, in particular to a signal frame structure and a technical proposal for an aeronautical telemetry channel. [0002] technical background [0003] In aviation telemetry communication, the surrounding channel environment during the movement of the aircraft will experience a series of scene changes such as parking, taxiing, take-off, air flight, dive, and landing, and is affected by the surrounding terrain, buildings, and aircraft fuselage. The formation of a multipath propagation channel causes shadow fading and multipath fading to occur in the wireless signal arriving at the receiver; at the same time, the high-speed and high-maneuvering flight of the aircraft causes the wireless signal to undergo a strong Doppler frequency shift, which affects the communication quality, communication coverage, and communication quality. system stability and reliability. Therefore, when ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03H04L25/02H04J13/00
CPCH04L25/03159H04J13/0059H04J2013/0096H04L25/0202
Inventor 金哲仕陈顺方邹星
Owner CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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