Unlock instant, AI-driven research and patent intelligence for your innovation.

Millimeter wave Internet of Things communication system and method based on beam modulation

A millimeter wave and Internet of Things technology, applied in the field of Internet of Things communication, can solve the problems of high algorithm complexity, high cost of millimeter wave communication, and high hardware cost, and achieve the effect of low complexity, low complexity and low cost

Active Publication Date: 2020-08-28
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a millimeter-wave Internet of Things communication system based on beam modulation for the high cost of millimeter-wave communication caused by the high hardware cost and high algorithm complexity (requiring channel estimation, beamforming, etc.) of the existing millimeter-wave system Different from the traditional millimeter-wave algorithm that only considers the strongest channel transmission path, this system makes full use of the line-of-sight path and non-line-of-sight path of the millimeter-wave channel for signal transmission, and the attenuation of the millimeter-wave signal is different based on different paths of the channel It can make the unmodulated millimeter wave signal sent by the node have different energy after channel transmission and reach the receiving end, and realize a modulation effect similar to ASK, that is, beam modulation; in the proposed Internet of Things system based on beam modulation, the node device Different antenna groups are enabled according to the different information bits in the transmitted data frame, so that the millimeter wave signal can propagate along different paths in the channel, and the receiving end determines the judgment method according to the received energy of the millimeter wave signal of the preamble in the corresponding frame , and use it as the beam-modulated millimeter-wave signal corresponding to the data part in the frame to decode, recover the transmitted information, and thus realize the entire communication process; the system does not need to modulate the millimeter-wave signal before transmission, and does not need channel estimation. Deploy multiple sets of antennas at the receiving end to achieve space division multiple access, which greatly reduces the complexity of the system and improves the channel capacity and spectral efficiency of the mmWave system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Millimeter wave Internet of Things communication system and method based on beam modulation
  • Millimeter wave Internet of Things communication system and method based on beam modulation
  • Millimeter wave Internet of Things communication system and method based on beam modulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The millimeter-wave Internet of Things communication system based on beam modulation in an exemplary embodiment of the present invention includes: a sending-end device, a millimeter-wave channel, and a receiving-end device;

[0035] Wherein, the sending-end device can switch and send multiple millimeter wave signals according to the order of the information bit sequence of each frame of data, so that the millimeter-wave signals propagate along different paths of the millimeter-wave channel; wherein, the sending-end device The transmitted millimeter wave signal is a millimeter wave signal with the same frequency and the same amplitude;

[0036] The millimeter wave channel can perform beam modulation on the millimeter wave signal with the same frequency and the same amplitude, and the beam modulation is: when the millimeter wave signal with the same frequency and the same amplitude is transmitted along different paths of the millimeter wave channel, It will experience dif...

Embodiment 2

[0070] In this example, we set and That is, the two main lobes of beam0 are respectively located in the ±30° direction of the normal line of the antenna array. By analyzing the number of antennas, we can get the number of sending node antennas N node = 4, the corresponding beamwidth is θ BW =29.3°. In addition, the central AP is equipped with N AP = 64 antennas and M AP = 8 RF chains to communicate with the surrounding K = 5 nodes. where each node contains two sets of N node = 4 antennas and M node = 1 RF chain. Through the simulation experiment of the proposed communication system, since the number of antennas of the transmitting node is fixed, the test simulation results are as follows image 3 As shown, the channel capacity tests of MIMO systems with different numbers of receiving antennas N=4, 8, 16, 32, and 64 are respectively verified.

[0071] further, Figure 4 It shows a schematic diagram of the change of the average bit error rate as the number of nodes ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a millimeter wave Internet of Things communication system and method based on beam modulation. Sending end equipment in the system can enable millimeter waves to be emitted along different directions according to different information bit sequences in a data frame; and when the millimeter wave beams in different directions are transmitted along different paths in a channel,attenuation of different degrees can be experienced, that is, beam energy shows energy difference after passing through different paths, and unmodulated millimeter wave signals are different in energy after being transmitted to a receiving end through different paths of a channel, so that an approximate ASK modulation effect, namely beam modulation, is realized; and the receiving end equipment can determine the judgment standard of the signal according to the received energy of the millimeter wave signal of the lead code in the corresponding data frame, and decode the information field in thedata frame according to the obtained judgment standard so as to complete the transmission of the information. The system does not need to carry out channel estimation, does not need a complex decoding algorithm, has relatively low algorithm complexity, and realizes low-cost and efficient transmission.

Description

technical field [0001] The present invention relates to the technical field of Internet of Things communication, in particular to a communication system and method for millimeter wave Internet of Things based on beam modulation. Background technique [0002] It is estimated that by 2025, the total number of IoT devices will reach 75 billion worldwide, growing at a rate of 23.76% per year. With the exponential growth of IoT devices, it is believed that developing scalable, energy-efficient, and reliable IoT connectivity solutions can bring great benefits to society and industry. Unfortunately, at present, IoT devices are mainly oriented to low-speed application scenarios, and the communication frequency band used is low, which cannot meet the current IoT communication requirements for large data volume and high-speed transmission. The huge growth of IoT devices poses great challenges to future wireless communication systems, especially when broadband IoT services are require...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0408H04B7/06H04B7/08H04L27/04H04L27/06
CPCH04B7/0408H04B7/0695H04B7/088H04L27/04H04L27/06
Inventor 李帅陈杰男罗斯瑜邢静
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA