COFDM wireless broadband ad-hoc network module suitable for complex environment

Abstract

The invention discloses a COFDM wireless broadband ad-hoc network module suitable for a complex environment. The module comprises an enclosure and an ad-hoc network motherboard circuit; the ad-hoc network motherboard circuit comprises a radio frequency receiving unit, a radio frequency interference detection unit, a radio frequency transmitting unit, a broadband radio frequency receiving and sending unit, a baseband unit, an ad hoc network protocol unit, a user interface unit and a low ripple modulus isolation power supply system, the COFDM wireless broadband ad-hoc network module provides throughput of 24M-60Mbps for the system bandwidth and meets any 6-10 hops, the minimum bandwidth between any nodes is greater than the throughput of 3Mbp, the wireless signal baseband meets 300M-6G adjustable requirements and supports FDD frequency hopping and TDD multiplexing connection, the linearity of the wireless signals is high, the anti-interference ability of the automatic radio frequency interference detection technology is high, the spurious suppression is good, the receiving sensitivity is high, the filtering effect is good, the signal to noise ratio is high, the wireless broadband ad-hoc network module in the complex environment can be stratified, and an ad-hoc network product in any form can be designed by using the module and is applied to an industrial customer or individual combat system.

Description

technical field [0001] The invention relates to the technical field of wireless ad hoc network communication, in particular to a COFDM wireless broadband ad hoc network module suitable for complex environments. Background technique [0002] In special industry applications such as public security, fire protection, electric power, petroleum and other fields, it is impossible to establish a fixed wireless communication network at the site of the incident in advance, and the application environment of these industries is very complicated, such as high-rise buildings, narrow streets, multi-storey basement signal Coverage, power rescue in mountainous areas with complex terrain, etc. cannot establish an effective emergency wireless communication network, and cannot transmit information from the scene of the incident to a safe place. There are no good wireless products for ad hoc networks on the market at present. [0003] The traditional public mobile network is a pre-established...

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is that currently the ad hoc network products used by industry customers in the market are basically various products based on the 802.11 protocol MESH function improvement, and the point switching time is tens of seconds, and there are frequent network node switching And deadlock problems, large bandwidth jitter, high delay, short communication distance, and poor mobility; wireless signals have poor linearity of the receiving circuit, small dynamic range, and low signal-to-noise ratio, resulting in high bit error rate and poor anti-interference ability. When the distance is short, the spurious and secondary intermodulation signals emitted by the transmitting signal interfere with the reception of adjacent nodes; these serious defects make this kind of product only for demonstration, and cannot meet the real application needs of industry customers. The purpose is to provide The COFDM wireless broadband ad-hoc network module solves the above problems

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