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Multi-antenna vehicle network communication method based on IEEE802.11p standard

An ieee80211p, vehicle-mounted network technology, applied in the field of multi-antenna vehicle-mounted network communication, can solve the problem of insufficient raw data rate, achieve rapid information collection and information transmission, increase capacity and information rate, increase system capacity and spectrum utilization Effect

Inactive Publication Date: 2016-04-13
QINGDAO ACADEMY OF INTELLIGENT IND
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Problems solved by technology

However, the maximum data rate of IEEE802.11p is 27Mbps, which is halved compared to 54Mbps of 802.11a / g. As well as the development trend, such raw data rate is obviously not enough

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  • Multi-antenna vehicle network communication method based on IEEE802.11p standard
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  • Multi-antenna vehicle network communication method based on IEEE802.11p standard

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Embodiment 1

[0045] figure 1It is a schematic diagram of the physical layer of the sending end of a multi-antenna vehicle-mounted network in this embodiment. combine figure 1 , at the sending end, a convolutional encoding method (code rate R=1 / 2) is adopted, and the number of transmission bits after the transmitted signal passes through the channel encoder is doubled. In order to eliminate redundancy, the coded transmission signal is punctured, so as to obtain a corresponding coding rate. If the number of bits after puncturing is not an integer multiple of the data subcarrier (48), bits need to be filled after the punctured bit sequence to meet the requirements. In order to eliminate burst errors, an interleaver is added to the system. The modulator modulates the transmitted signal output after passing through the interleaver. The vehicle communication standard supports a total of four modulation methods, namely BPSK, QPSK, 16QAM and 64QAM. The pilot insertion module inserts 4 pilots a...

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Abstract

The present invention provides a multi-antenna vehicle network communication method based on an IEEE802.11p standard. The method comprises the following steps: step one, a plurality of antennas are respectively mounted on a vehicle node / a roadside node as a transmitting terminal and a receiving terminal, to form a multi-antenna vehicle network; step two, the transmitting terminal codes signals; step three, an MIMO doubly-selective channel is used for the wireless transmission of the signals; step four, the receiving terminal combines the signals received from each antenna to perform joint detection on the signals; and step five, the receiving terminal decodes the signals. According to the present invention, the multi-antenna vehicle network communication method combines the MIMO technology in an existing IEEE802.11p standard system, effectively increases the system capacity and spectrum efficiency without increasing the system bandwidth, enables the system to perform rapid information acquisition and information transmission on a vehicle driving at a high speed, realizes the reliable high-speed transmission of traffic signals in an intelligent transportation communication network, improves the transportation efficiency, alleviates the traffic congestion, and improves the road network capacity.

Description

technical field [0001] The invention relates to the technical field of vehicle network communication, in particular to a multi-antenna vehicle network communication method based on the IEEE802.11p standard. Background technique [0002] With the continuous development of the social economy, the traffic capacity cannot meet the growing traffic demand. Traffic congestion, traffic accidents, environmental pollution and energy shortage have become common problems faced by countries all over the world. The initial solution to the transportation problem was a massive expansion of the transportation infrastructure. However, due to the increasing shortage of land, shoreline and other resources, the space for infrastructure expansion is getting smaller and smaller. Therefore, Intelligent Transportation System (IntelligentTransportationSystem, ITS) came into being. ITS is a collective term for the integrated application of communication, control and information processing technologi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04L29/08
CPCH04B7/0413H04L67/12
Inventor 韩双双赵恺程翔杨柳青王飞跃
Owner QINGDAO ACADEMY OF INTELLIGENT IND
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