Pub Date : 2023-01-01DOI: 10.12677/hjwc.2023.133003
崇锦 仲
This article designs a short-distance wireless transmission system for audio signals based on infra-red light communication, using infrared light emitting diodes and infrared light receiving modules as transmitting and receiving devices. Within a transmission distance of 1 m, the short-distance wireless transmission of audio signals is achieved. The system is different from previous chip modules based on relatively fixed parameters and functions, but adopts a discrete modular design. The functional modules of the transmitting and receiving components are independent and inter-connected, allowing for convenient module replacement and re-configurable technology updates and upgrades under the conditions of functional implementation.
{"title":"Modular Design of Short-Distance Wireless Audio Transmission System","authors":"崇锦 仲","doi":"10.12677/hjwc.2023.133003","DOIUrl":"https://doi.org/10.12677/hjwc.2023.133003","url":null,"abstract":"This article designs a short-distance wireless transmission system for audio signals based on infra-red light communication, using infrared light emitting diodes and infrared light receiving modules as transmitting and receiving devices. Within a transmission distance of 1 m, the short-distance wireless transmission of audio signals is achieved. The system is different from previous chip modules based on relatively fixed parameters and functions, but adopts a discrete modular design. The functional modules of the transmitting and receiving components are independent and inter-connected, allowing for convenient module replacement and re-configurable technology updates and upgrades under the conditions of functional implementation.","PeriodicalId":66606,"journal":{"name":"无线通信","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66098219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12677/hjwc.2023.134006
岩 张
With the development of mobile communications, the number of devices has grown rapidly, users’ communication requirements have generally increased
{"title":"Research on D2D Resource Allocation Algorithm Based on Service Quality Assurance","authors":"岩 张","doi":"10.12677/hjwc.2023.134006","DOIUrl":"https://doi.org/10.12677/hjwc.2023.134006","url":null,"abstract":"With the development of mobile communications, the number of devices has grown rapidly, users’ communication requirements have generally increased","PeriodicalId":66606,"journal":{"name":"无线通信","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66098463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12677/hjwc.2023.134005
凯 杨
This article explores various methods to enhance the positioning capabilities of Android mobile
{"title":"Research on Positioning Enhancement Method of Android Mobile Application Based on Portable GNSS Receiver","authors":"凯 杨","doi":"10.12677/hjwc.2023.134005","DOIUrl":"https://doi.org/10.12677/hjwc.2023.134005","url":null,"abstract":"This article explores various methods to enhance the positioning capabilities of Android mobile","PeriodicalId":66606,"journal":{"name":"无线通信","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66098429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12677/hjwc.2023.132002
旸 孙
Integrated sensing and communication technology utilizes wireless signals to achieve sensing functions such as target localization, detection, imaging and identification, which is one of the most core services and applications of future 6G communications. In 5G communication networks, partial communication sensing technology can enhance network collaboration and resource allocation by sensing base station directions. This paper focuses on the direction finding of the signal source in 5G mobile communication systems. To this end, we extend the multipath angle estima-孙旸
{"title":"Research on Directional Sensing of Base Stations Based on 5G Waveform","authors":"旸 孙","doi":"10.12677/hjwc.2023.132002","DOIUrl":"https://doi.org/10.12677/hjwc.2023.132002","url":null,"abstract":"Integrated sensing and communication technology utilizes wireless signals to achieve sensing functions such as target localization, detection, imaging and identification, which is one of the most core services and applications of future 6G communications. In 5G communication networks, partial communication sensing technology can enhance network collaboration and resource allocation by sensing base station directions. This paper focuses on the direction finding of the signal source in 5G mobile communication systems. To this end, we extend the multipath angle estima-孙旸","PeriodicalId":66606,"journal":{"name":"无线通信","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66098131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12677/hjwc.2023.131001
亚斌 李
For the Internet of vehicles (IoV) communication system, for the sake of improving the transmission performance, a multi-relay and multi-antenna cooperative vehicular network (CVN) model was established, and an outage probability (OP) prediction algorithm based on generalized regression neural network (GRNN) was designed. The communication links follow the cascaded Nakagmi-m distribution, the relays use hybrid decode-amplify farward (HDAF) protocol, and the
{"title":"Prediction of Outage Probability of Cooperative Vehicular Network Based on GRNN","authors":"亚斌 李","doi":"10.12677/hjwc.2023.131001","DOIUrl":"https://doi.org/10.12677/hjwc.2023.131001","url":null,"abstract":"For the Internet of vehicles (IoV) communication system, for the sake of improving the transmission performance, a multi-relay and multi-antenna cooperative vehicular network (CVN) model was established, and an outage probability (OP) prediction algorithm based on generalized regression neural network (GRNN) was designed. The communication links follow the cascaded Nakagmi-m distribution, the relays use hybrid decode-amplify farward (HDAF) protocol, and the","PeriodicalId":66606,"journal":{"name":"无线通信","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66098065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12677/hjwc.2023.134004
千里 马
This paper proposes a dynamic beam-switching algorithm that utilizes traffic volume prediction to address the high complexity of the current beam-switching algorithm and the wastage of onboard resources in low-orbit satellite constellations. Firstly, we model the signal intensity distribution of a single satellite coverage area. Then, considering the obvious spatiotemporal periodicity of the communication traffic volume, Convolutional Long Short Term Memory neural network (Conv-LSTM) is used to accurately analyze the regional communication traffic volume prediction. Finally, we define the importance of the beam service according to the signal intensity distribution and communication traffic volume, so as to select the beam that needs to be switched off. Based on the proposed algorithm, when the service area of the satellite is switched, the algorithm can preset the beam state at the next moment according to the prediction result, thereby reducing the number of beam adjustments. The simulation results show that the algorithm takes into account the signal blind area of the beam coverage area and the ground communication traffic, effectively reducing the waste of beam resources and computational complexity.
{"title":"A Dynamic Beam Switching Algorithm for LEO Satellite Based on Communication Traffic Volume Prediction","authors":"千里 马","doi":"10.12677/hjwc.2023.134004","DOIUrl":"https://doi.org/10.12677/hjwc.2023.134004","url":null,"abstract":"This paper proposes a dynamic beam-switching algorithm that utilizes traffic volume prediction to address the high complexity of the current beam-switching algorithm and the wastage of onboard resources in low-orbit satellite constellations. Firstly, we model the signal intensity distribution of a single satellite coverage area. Then, considering the obvious spatiotemporal periodicity of the communication traffic volume, Convolutional Long Short Term Memory neural network (Conv-LSTM) is used to accurately analyze the regional communication traffic volume prediction. Finally, we define the importance of the beam service according to the signal intensity distribution and communication traffic volume, so as to select the beam that needs to be switched off. Based on the proposed algorithm, when the service area of the satellite is switched, the algorithm can preset the beam state at the next moment according to the prediction result, thereby reducing the number of beam adjustments. The simulation results show that the algorithm takes into account the signal blind area of the beam coverage area and the ground communication traffic, effectively reducing the waste of beam resources and computational complexity.","PeriodicalId":66606,"journal":{"name":"无线通信","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66098336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.12677/hjwc.2022.121001
显月 刘
Non-line-of-sight underwater wireless optical communication uses light scattering for transmission, which can alleviate the alignment requirements of line-of-sight underwater wireless optical communication. The impulse response can well reflect the channel performance of the underwater wireless optical communication system. In this paper, an improved non-line-of-sight under-water wireless optical communication transmission channel model based on the pointing probability method is proposed. Based on this model, the effects of different seawater environments, different transceiver distances, and different wavelengths on impulse response are simulated. The simulation results show that the pulse broadening effect decreases with the increase of light wavelength, seawater turbidity, and transmission distance. The proposed non-line-of-sight transmission model provides an accurate and realistic method for channel feature description of under-water non-line-of-sight wireless optical communication, which has a certain reference value for analyzing and developing an effective underwater wireless optical communication system.
{"title":"Research on Impulse Response Characteristics of Underwater NLOS Wireless Optical Communication Transmission Channels","authors":"显月 刘","doi":"10.12677/hjwc.2022.121001","DOIUrl":"https://doi.org/10.12677/hjwc.2022.121001","url":null,"abstract":"Non-line-of-sight underwater wireless optical communication uses light scattering for transmission, which can alleviate the alignment requirements of line-of-sight underwater wireless optical communication. The impulse response can well reflect the channel performance of the underwater wireless optical communication system. In this paper, an improved non-line-of-sight under-water wireless optical communication transmission channel model based on the pointing probability method is proposed. Based on this model, the effects of different seawater environments, different transceiver distances, and different wavelengths on impulse response are simulated. The simulation results show that the pulse broadening effect decreases with the increase of light wavelength, seawater turbidity, and transmission distance. The proposed non-line-of-sight transmission model provides an accurate and realistic method for channel feature description of under-water non-line-of-sight wireless optical communication, which has a certain reference value for analyzing and developing an effective underwater wireless optical communication system.","PeriodicalId":66606,"journal":{"name":"无线通信","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66097943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.12677/hjwc.2022.122002
相豫 程
The attenuator is a power gain control element, which is used in various communication amplifier circuit scenarios to adjust the signal or power to achieve the optimal state of the circuit. With the joint efforts of scientific researchers in recent years, MMIC technology has made breakthroughs in various aspects, and the current research direction has moved towards broadband, high power and other directions. The attenuator involved in this paper provides a reference design and specific tape-out for high power and ultra-wideband while realizing localization. Its bare chip size is 1.2 × 1.0 mm, which can meet the 2 × 2 mm package in QFN, the attenuation is 5dB, the frequency band range is DC-40GHz, and the power tolerance can reach 2 W.
{"title":"Broadband High Power Attenuator Based on GaAs Substrate","authors":"相豫 程","doi":"10.12677/hjwc.2022.122002","DOIUrl":"https://doi.org/10.12677/hjwc.2022.122002","url":null,"abstract":"The attenuator is a power gain control element, which is used in various communication amplifier circuit scenarios to adjust the signal or power to achieve the optimal state of the circuit. With the joint efforts of scientific researchers in recent years, MMIC technology has made breakthroughs in various aspects, and the current research direction has moved towards broadband, high power and other directions. The attenuator involved in this paper provides a reference design and specific tape-out for high power and ultra-wideband while realizing localization. Its bare chip size is 1.2 × 1.0 mm, which can meet the 2 × 2 mm package in QFN, the attenuation is 5dB, the frequency band range is DC-40GHz, and the power tolerance can reach 2 W.","PeriodicalId":66606,"journal":{"name":"无线通信","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66097546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.12677/hjwc.2022.123003
培培 李
At present, there are many brands of wireless chargers in the market with various patterns and great development prospects. But the standard update is not timely and there is a lack of effective constraints, resulting in uneven product quality. Combined with the existing national standards, this paper puts forward product testing methods to monitor the possible safety risk points. We analyze the causes according to the monitoring results of wireless chargers, which can escort the product quality and provide technical support for testing institutions to carry out wireless charger products testing and enterprise to develop product.
{"title":"Safety Risk Monitoring and Analysis of Wireless Charger","authors":"培培 李","doi":"10.12677/hjwc.2022.123003","DOIUrl":"https://doi.org/10.12677/hjwc.2022.123003","url":null,"abstract":"At present, there are many brands of wireless chargers in the market with various patterns and great development prospects. But the standard update is not timely and there is a lack of effective constraints, resulting in uneven product quality. Combined with the existing national standards, this paper puts forward product testing methods to monitor the possible safety risk points. We analyze the causes according to the monitoring results of wireless chargers, which can escort the product quality and provide technical support for testing institutions to carry out wireless charger products testing and enterprise to develop product.","PeriodicalId":66606,"journal":{"name":"无线通信","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66097629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.12677/hjwc.2022.124004
宁川 刘
With the continuous development of military
{"title":"ADS Simulation and Design of Broadband Power Amplifier","authors":"宁川 刘","doi":"10.12677/hjwc.2022.124004","DOIUrl":"https://doi.org/10.12677/hjwc.2022.124004","url":null,"abstract":"With the continuous development of military","PeriodicalId":66606,"journal":{"name":"无线通信","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66097855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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