{"title":"Spatio-Temporal Focal Modulation Network for Massive MIMO CSI Feedback","authors":"Hua Shao;Xiao Zhang;Haijun Zhang;Kexin Xu","doi":"10.1109/TVT.2024.3502840","DOIUrl":null,"url":null,"abstract":"Channel state information (CSI) compression and recovery are vital for the communication system to maximize the throughput. In this paper, a CSI feedback method based on spatio-temporal focal modulation (STFM) is proposed. By using a focal modulation mechanism that incorporates the interaction between the spatial and temporal features, the proposed STFM jointly exploits the cross-domain correlation. With multiple successive CSI snapshots, STFM can achieve excellent compression and reconstruction performance. Besides, a residual vector quantization (RVQ) with a shared and learnable codebook is introduced. The RVQ includes multiple stages to quantize the output of the encoder recursively and the corresponding quantization error can be reduced. Simulation results show that the STFM with RVQ outperforms the existing CSI feedback compression and quantization methods in different configurations.","PeriodicalId":13421,"journal":{"name":"IEEE Transactions on Vehicular Technology","volume":"74 3","pages":"5259-5263"},"PeriodicalIF":7.1000,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Vehicular Technology","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10759309/","RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Channel state information (CSI) compression and recovery are vital for the communication system to maximize the throughput. In this paper, a CSI feedback method based on spatio-temporal focal modulation (STFM) is proposed. By using a focal modulation mechanism that incorporates the interaction between the spatial and temporal features, the proposed STFM jointly exploits the cross-domain correlation. With multiple successive CSI snapshots, STFM can achieve excellent compression and reconstruction performance. Besides, a residual vector quantization (RVQ) with a shared and learnable codebook is introduced. The RVQ includes multiple stages to quantize the output of the encoder recursively and the corresponding quantization error can be reduced. Simulation results show that the STFM with RVQ outperforms the existing CSI feedback compression and quantization methods in different configurations.
期刊介绍：
The scope of the Transactions is threefold (which was approved by the IEEE Periodicals Committee in 1967) and is published on the journal website as follows: Communications: The use of mobile radio on land, sea, and air, including cellular radio, two-way radio, and one-way radio, with applications to dispatch and control vehicles, mobile radiotelephone, radio paging, and status monitoring and reporting. Related areas include spectrum usage, component radio equipment such as cavities and antennas, compute control for radio systems, digital modulation and transmission techniques, mobile radio circuit design, radio propagation for vehicular communications, effects of ignition noise and radio frequency interference, and consideration of the vehicle as part of the radio operating environment. Transportation Systems: The use of electronic technology for the control of ground transportation systems including, but not limited to, traffic aid systems; traffic control systems; automatic vehicle identification, location, and monitoring systems; automated transport systems, with single and multiple vehicle control; and moving walkways or people-movers. Vehicular Electronics: The use of electronic or electrical components and systems for control, propulsion, or auxiliary functions, including but not limited to, electronic controls for engineer, drive train, convenience, safety, and other vehicle systems; sensors, actuators, and microprocessors for onboard use; electronic fuel control systems; vehicle electrical components and systems collision avoidance systems; electromagnetic compatibility in the vehicle environment; and electric vehicles and controls.
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