{"title":"Low-Complexity MIMO-SCMA Detection for LEO Satellite Communications","authors":"Yusha Liu;Chen Zhang;Jie Hu;Jian Chen;Kun Yang","doi":"10.1109/TVT.2024.3502232","DOIUrl":null,"url":null,"abstract":"In order to unlock the full advantages of low earth orbit (LEO) satellite communications, non-orthogonal multiple access (NOMA) has been introduced for supporting massive access in the uplink. However, the high detection complexity prevents NOMA from practical implementation. Accordingly, in this work, we consider the accuracy-complexity trade-off for the uplink multiple-input multiple-output (MIMO)-NOMA in satellite communications and propose an improved approximate message passing (IAMP) detection algorithm. We further modify our IAMP to adapt to imperfect ground-space channels. Simulation results demonstrate that the proposed IAMP detector achieves a lower bit error rate (BER) performance than the low-complexity AMP detector, approaching the state-of-the-art message passing algorithm (MPA) detector, and attains a lower detection complexity than both MPA and AMP detection.","PeriodicalId":13421,"journal":{"name":"IEEE Transactions on Vehicular Technology","volume":"74 3","pages":"5253-5258"},"PeriodicalIF":7.1000,"publicationDate":"2024-11-25","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/10766633/","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
In order to unlock the full advantages of low earth orbit (LEO) satellite communications, non-orthogonal multiple access (NOMA) has been introduced for supporting massive access in the uplink. However, the high detection complexity prevents NOMA from practical implementation. Accordingly, in this work, we consider the accuracy-complexity trade-off for the uplink multiple-input multiple-output (MIMO)-NOMA in satellite communications and propose an improved approximate message passing (IAMP) detection algorithm. We further modify our IAMP to adapt to imperfect ground-space channels. Simulation results demonstrate that the proposed IAMP detector achieves a lower bit error rate (BER) performance than the low-complexity AMP detector, approaching the state-of-the-art message passing algorithm (MPA) detector, and attains a lower detection complexity than both MPA and AMP detection.
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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