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AVAPS通气模式联合TCM监测在慢性阻塞性肺疾病急性加重期患者脱机中的应用价值
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作者 孙才智 朱晨晨 +1 位作者 秦海东 鲍磊 《临床肺科杂志》 2024年第12期1783-1787,共5页
目的探讨AVAPS通气模式联合经皮氧/二氧化碳检测仪(TCM)监测在慢性阻塞性肺疾病急性加重(AECOPD)患者有创-无创序贯通气中的应用价值。方法选取行有创通气的老年慢阻肺患者120例,根据无创呼吸机的不同通气模式,将患者脱机后随机分为S/T... 目的探讨AVAPS通气模式联合经皮氧/二氧化碳检测仪(TCM)监测在慢性阻塞性肺疾病急性加重(AECOPD)患者有创-无创序贯通气中的应用价值。方法选取行有创通气的老年慢阻肺患者120例,根据无创呼吸机的不同通气模式,将患者脱机后随机分为S/T组及AVAPS组,每组患者60例。所有患者在“出窗”时记录呼吸频率(RR)、心率(HR)、血氧饱和度(SpO_(2))、吸氧浓度(FiO_(2))、序贯性器官功能衰竭评分(SOFA)、白细胞总数、降钙素原、血小板、白蛋白及肌酐等指标,并记录无创机械通气6h后呼吸频率(RR)、心率(HR)、血氧饱和度(SpO_(2))及吸氧浓度(FiO_(2))等指标。同时记录二氧化碳分压(PaCO_(2)),行经皮二氧化碳分压(PtcCO_(2))监测,比较PtcCO_(2)与PaCO_(2)的相关性及治疗前后各生理参数的差异。比较两组患者48h再插管率、距插管时间、ICU住院时间。分析撤机后行无创机械通气6h后PtcCO_(2)变异度对48h再插管的预测效能。结果两组患者“出窗”时各生理参数及PtcCO_(2)值,均无统计学差异(P>0.05)。与S/T组比较,无创通气6h后,AVAPS组的生理参数RR、HR、PtcCO_(2)变异度及ROX指数均有所改善,差异有统计学意义(P<0.05),且AVAPS组的48h再插管率优于S/T组,且距插管时间更长(P<0.05)。ROC曲线分析显示,通气6h后的PtcCO_(2)变异度对AVAPS组患者48h再插管具有一定的诊断效能,其敏感度为92.30%,特异度为82.60%,AUC为0.898。结论AVAPS通气模式联合PtcCO_(2)在重症慢阻肺有创-无创“序贯”治疗的运用,能有更好的生理参数,更低的再插管率,以及更为优势的“人机协调性”。 展开更多
关键词 慢性阻塞性肺疾病急性加重 有创-无创序贯 经皮氧/二氧化碳检测仪监测 经皮二氧化碳分压
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TCM抗阻训练在肥胖型阻塞性睡眠呼吸暂停低通气综合征患者中的应用
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作者 汪涵珠 王佳 +1 位作者 闵亚琴 陈兰 《齐鲁护理杂志》 2024年第17期130-133,共4页
目的:探讨过渡期护理(TCM)抗阻训练在肥胖型阻塞性睡眠呼吸暂停低通气综合征(OSAHS)患者中的应用效果。方法:选取2022年1月1日~2023年1月1日接受治疗的102例肥胖型OSAHS患者作为研究对象,根据随机数字表法将其分为对照组和研究组各51例... 目的:探讨过渡期护理(TCM)抗阻训练在肥胖型阻塞性睡眠呼吸暂停低通气综合征(OSAHS)患者中的应用效果。方法:选取2022年1月1日~2023年1月1日接受治疗的102例肥胖型OSAHS患者作为研究对象,根据随机数字表法将其分为对照组和研究组各51例。对照组行常规抗阻训练,研究组行TCM抗阻训练;对比两组入院次日、出院1个月时体质指标[包括体质量指数(BMI)、颈围、腹围]、嗜睡程度[采用中文版Epworth嗜睡量表(ESS)]及生活质量[采用睡眠呼吸暂停低通气综合征生命质量评估表(QOL-OSAHS)]。结果:共有102例患者参与研究,其中对照组有1例在中途失访剔除,最后101例患者完整参与研究。出院1个月时,两组BMI、颈围、腹围及均ESS评分均低于入院次日(P<0.05),且研究组低于对照组(P<0.05);出院1个月时,两组QOL-OSAHS评分高于入院次日(P<0.05),且研究组高于对照组(P<0.05)。结论:TCM抗阻训练可有效改善肥胖型OSAHS患者体质指标,提升睡眠质量和生活质量。 展开更多
关键词 tcm抗阻训练 肥胖型呼吸暂停综合征 体质指标 睡眠质量 生活质量
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中医药团体标准评价体系(SCORE-TCM)解读
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作者 宗星煜 王丁熠 +15 位作者 王丽颖 赵学尧 林甲昊 刘斌 虞雪云 郭旸 梁宁 车前子 蒋寅 张海力 龚照元 李安 王巍力 李慧珍 史楠楠 王燕平 《中国中医基础医学杂志》 CAS CSCD 2024年第4期622-626,共5页
本文全面解读了中医药团体标准评价体系(System of Consortium Standards Rating and Evaluation of Traditional Chinese Medicine,SCORE-TCM)。SCORE-TCM是结合定性与定量评价,全面评估中医药团体标准在制定主体、文本编写、技术内容... 本文全面解读了中医药团体标准评价体系(System of Consortium Standards Rating and Evaluation of Traditional Chinese Medicine,SCORE-TCM)。SCORE-TCM是结合定性与定量评价,全面评估中医药团体标准在制定主体、文本编写、技术内容、推广应用和实施效益等几方面特征的综合评价工具。文中详述了SCORE-TCM的构建目的、定义和构建过程,解释了评价指标体系中的各项指标,并对每项指标的评价材料进行介绍。本文旨在帮助中医药团体标准的制定者、第三方评价机构和其他相关方更好地理解SCORE-TCM各评价条目的含义,更有效地运用于中医药团体标准的自评价或第三方评价,SCORE-TCM将为《中医药团体标准管理办法》的贯彻实施,以及中医药团体标准的高质量发展提供技术支持。 展开更多
关键词 中医药 团体标准 SCORE-tcm 评价工具 解读
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Eating Disorders and Pregnancy: The Case of Anorexia
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作者 Anne-Sophie Gautier 《Open Journal of Psychiatry》 2024年第4期353-373,共21页
The question of the link between pregnancy and eating disorders is an important question. At the moment, there are few concrete answers for these patients. Despite common fertility challenges, patients who suffer from... The question of the link between pregnancy and eating disorders is an important question. At the moment, there are few concrete answers for these patients. Despite common fertility challenges, patients who suffer from ED are able to access maternity. ED and pregnancy can either have an easy evolution or experience a lot of trouble. Many studies describe obstetrical and foetal complications (low birthweight, inadequate intra-uterine growth, small head circumference, miscarriage, caesarean section). Those patients are frequently reluctant to address their disease with their specialist, who also often doesn’t know how to screen the signs. The lack of official data to train the specialists further increases these difficulties. However, ED are frequent in the general population and young patients are likely to eventually want to become mothers. It is thus essential to know how to screen those patients early and accurately to improve their treatment and care. Eating disorders impact the pregnancy, the delivery and the postpartum as well as the growth of the baby. It is an important public health problem. The evolution from being a woman to becoming a mother is a difficult one, and even more so when the women is suffering from ED. Those patients must handle their nutritional fears, the anxiety about their body changing with pregnancy and the daily challenges. The early interactions with their baby have consequences on their development. It seems necessary to evaluate how to improve the screening and the patient care in ED patients. Screening should begin from the pregnancy desire to the postpartum. This patient care should be based on a multidisciplinary care team. 展开更多
关键词 Eating Disorders anorexia PREGNANCY CHILD POSTPARTUM
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基于SCORE-TCM的中医药团体标准抽样评价方案设计
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作者 宗星煜 李慧珍 +13 位作者 赵学尧 程瑾瑞 李军 王丁熠 林甲昊 陈琳 王晶亚 梁宁 张海力 王梦琪 车前子 王丽颖 王燕平 史楠楠 《中国中医基础医学杂志》 CAS CSCD 2024年第1期66-70,共5页
目前,各社会团体积极参与中医药标准的制定和发布,特别是“十四五”以来,中医药团体标准化工作更是迎来了提质增效的关键阶段。深入评估社会团体发布的中医药标准质量,是推进中医药团体标准工作的关键环节和重点任务。前期已研制并形成... 目前,各社会团体积极参与中医药标准的制定和发布,特别是“十四五”以来,中医药团体标准化工作更是迎来了提质增效的关键阶段。深入评估社会团体发布的中医药标准质量,是推进中医药团体标准工作的关键环节和重点任务。前期已研制并形成了中医药团体标准评价体系(System of Consortium Standards Rating and Evaluation of Traditional Chinese Medicine, SCORETCM)。在上述背景下,本研究通过专家共识法,设计了一套基于SCORE-TCM的中医药团体标准抽样评价方案,应用场景为对于特定社会团体发布的标准,或各团体发布的特定技术类别的标准进行快速评估。该方案涵盖了标准抽样、材料收集、标准评价、结果解读的完整流程,为中医药团体标准的抽样评价工作提供了参考方案。 展开更多
关键词 中医药 团体标准 抽样 中医药团体标准评价体系 评价方案
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Chen Shigong,Founder of“TCM Orthodox School of External Medicine”
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作者 Yongxuan Liang Yinghua Huang 《Journal of Traditional Chinese Medical Sciences》 CAS 2024年第2期141-142,共2页
Chen Shigong,styled name Yuren,was also known by the literary name Ruoxu.Coming from Donghaichongchuan(present Nantong City,Jiangsu Province)he was a famous traditional Chinese medicine(TCM)specialist of external medi... Chen Shigong,styled name Yuren,was also known by the literary name Ruoxu.Coming from Donghaichongchuan(present Nantong City,Jiangsu Province)he was a famous traditional Chinese medicine(TCM)specialist of external medicine of the Ming Dynasty(1368-1644).The Orthodox Lineage of External Medicine(Wai Ke Zheng Zong)written by him has been valued as the founder of the TCM Orthodox School of External Medicine. 展开更多
关键词 tcm medicine(tcm) MEDICINE
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From Research on TCM Images to Historiography of TCM Images——Comments on History of Chinese Image Culture:Medical Image Volume
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作者 WEI Ran HUANG Zuozhen 《Chinese Medicine and Culture》 2024年第3期262-268,共7页
1 Introduction.Chinese medicine has a long and rich history,dating back to the classics of the Qin and Han dynasties and extending to the integration of Chinese and Western medicine in the modern era.The vast amount o... 1 Introduction.Chinese medicine has a long and rich history,dating back to the classics of the Qin and Han dynasties and extending to the integration of Chinese and Western medicine in the modern era.The vast amount of literature and scholarly works in this field makes it essential to thoroughly study the history of traditional Chinese medicine(TCM)in order to understand its development path throughout the ages and boost innovation based on tradition.This is why the sages emphasized the importance of“classifying the works into different schools and tracing back to their origins”(辨章学术,考镜源流). 展开更多
关键词 IMAGE tcm HISTORY
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A Conversation with Professor Ted Kaptchuk,a Key Architect of Modern TCM in the West
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作者 Ioannis Solos Charles Buck Ted Kaptchuk 《Chinese Medicine and Culture》 2024年第1期5-18,共14页
The interview was conducted on November 20th,2022 by Ioannis Solos and Charles Buck.Ted Kaptchuk(泰开阳)is a Professor of Medicine and a Professor of Global Health&Social Medicine at Harvard Medical School.In 1975... The interview was conducted on November 20th,2022 by Ioannis Solos and Charles Buck.Ted Kaptchuk(泰开阳)is a Professor of Medicine and a Professor of Global Health&Social Medicine at Harvard Medical School.In 1975,he graduated from the Macao Institute of Chinese Medicine,Macao,China.After returning to the West,Ted taught Chinese medicine throughout the States,Europe,Latin America,and Australia.Ted’s book,The Web that Has No Weaver:Understanding Chinese Medicine is a groundbreaking explanation of East Asian medicine that continues to shape the discourse of the Chinese medicine profession in the West and has been translated into 13 languages.In 1990,Ted was recruited in Harvard Medical School to help research Chinese medicine.After encountering high placebo responses in multiple acupuncture clinical trials,Ted decided to switch his career to primarily studying placebo.He has published over 300 peer-reviewed articles.He has been awarded the Lifetime Achievement Award from the Society of Acupuncture Research(2015),the Lifetime Achievement Award from the Society for Interdisciplinary Placebo Studies(2021),and the William Silen Lifetime Achievement Award in Mentoring from Harvard Medical School(2022). 展开更多
关键词 ACUPUNCTURE ACUPUNCTURE tcm
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Analysis of standardization development of TCM in Sichuan
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作者 Li Gen 《China Standardization》 2024年第5期59-61,共3页
Sichuan province is home to rich traditional Chinese medicine(TCM)resources.Recent years have seen unremitting efforts of TCM standardization in the province.By analyzing the measures and existing problems,this paper ... Sichuan province is home to rich traditional Chinese medicine(TCM)resources.Recent years have seen unremitting efforts of TCM standardization in the province.By analyzing the measures and existing problems,this paper provides recommendations to boost TCM development through standardization. 展开更多
关键词 SICHUAN tcm STANDARDIZATION
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My Relationship with TCM
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作者 RAMÓN MARIA CALDUCH 《China Today》 2024年第12期56-57,共2页
A Spanish businessman becomes a dedicated advocate of traditional Chinese medicine after witnessing its effects in treating his terminally ill young son.MY relationship with traditional Chinese medicine(TCM)-and with ... A Spanish businessman becomes a dedicated advocate of traditional Chinese medicine after witnessing its effects in treating his terminally ill young son.MY relationship with traditional Chinese medicine(TCM)-and with China-began in 1988,when I traveled to Beijing with my two-year-old son Joan.He was suffering from an extremely rare disease called leukoencephalopathy,in which the brain is affected,and we wanted to explore treatment possibilities. 展开更多
关键词 medicine(tcm) TRAVEL tcm
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Classification research of TCM pulse conditions based on multi-label voice analysis
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作者 Haoran Shen Junjie Cao +5 位作者 Lin Zhang Jing Li Jianghong Liu Zhiyuan Chu Shifeng Wang Yanjiang Qiao 《Journal of Traditional Chinese Medical Sciences》 CAS 2024年第2期172-179,共8页
Objective:To explore the feasibility of remotely obtaining complex information on traditional Chinese medicine(TCM)pulse conditions through voice signals.Methods: We used multi-label pulse conditions as the entry poin... Objective:To explore the feasibility of remotely obtaining complex information on traditional Chinese medicine(TCM)pulse conditions through voice signals.Methods: We used multi-label pulse conditions as the entry point and modeled and analyzed TCM pulse diagnosis by combining voice analysis and machine learning.Audio features were extracted from voice recordings in the TCM pulse condition dataset.The obtained features were combined with information from tongue and facial diagnoses.A multi-label pulse condition voice classification DNN model was built using 10-fold cross-validation,and the modeling methods were validated using publicly available datasets.Results: The analysis showed that the proposed method achieved an accuracy of 92.59%on the public dataset.The accuracies of the three single-label pulse manifestation models in the test set were 94.27%,96.35%,and 95.39%.The absolute accuracy of the multi-label model was 92.74%.Conclusion: Voice data analysis may serve as a remote adjunct to the TCM diagnostic method for pulse condition assessment. 展开更多
关键词 Pulse conditions tcm pulse diagnosis Voice analysis Multi-label classification Machine learning
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Liu-Jun-Zi decoction alleviates chemotherapy-induced anorexia by regulating gut microbiota and TLR4/MyD88/NF-κB p65 signaling pathway
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作者 Yu-Jie Gao Xi-Pei Wu +4 位作者 Bin-Bin Ye Yong-Zhao Dai Yao-Zhong Zhao Xiu-Xiu Liao Ke Nie 《Traditional Medicine Research》 2024年第8期47-58,共12页
Background:Liu-Jun-Zi decoction(LJZD),a classical nourishing formula in China,has been proven to be effective in treating chemotherapy-induced anorexia.In this study,the mechanism of LJZD in alleviating chemotherapy-i... Background:Liu-Jun-Zi decoction(LJZD),a classical nourishing formula in China,has been proven to be effective in treating chemotherapy-induced anorexia.In this study,the mechanism of LJZD in alleviating chemotherapy-induced anorexia was discussed from the aspects of regulating gut microbiota,repairing intestinal barrier injury and inhibiting inflammatory pathways.Methods:A rat model of chemotherapy-induced anorexia was established using cisplatin.The study evaluated the therapeutic effects of LJZD by observing the weight,food intake,and intestinal pathology of rats.The impact of LJZD on gut microbiota and metabolites,specifically short-chain fatty acids,was investigated through gut microbiota analysis and targeted metabolomics.The anti-inflammatory and intestinal protective effects of LJZD were assessed by examining the expression of intestinal tight junction proteins associated with the inflammatory pathway.Results:LJZD alleviated cisplatin-induced inflammation and intestinal barrier disruption,as evidenced by upregulated expression of tight junction protein 1(TJ-1)and occludin,along with reduced serum levels of interleukin 6(IL-6),interleukin-1β(IL-1β),tumor necrosis factor-α(TNF-α),and lipopolysaccharide.Additionally,LJZD alleviated microbiota imbalance and regulated the levels of short-chain fatty acids,especially increased the relative abundance of Coriobacteriales Incertae Sedis,Lactabacillus johnsonii F19785,Parasutterella,and reduced the Tyzzerella.In the hypothalamus,LJZD exerts suppressive effects on the toll-like receptor 4(TLR4)/myeloid differentiation factor 88(MyD88)/nuclear factor-κB(NF-κB)p65 signaling pathway,leading to a downregulation in the transcriptional activity of IL-6 and IL-1β,as well as Interleukin 6 receptors(IL-6R)and Interleukin-1βreceptors(IL-1R1)mRNA expression levels.Conclusion:In summary,LJZD alleviate chemotherapy-induced anorexia by modulating the gut microbiota,repairing the intestinal mechanical barriers,and suppressing the TLR4/MyD88/NF-κB p65 signaling pathway. 展开更多
关键词 Liu-Jun-Zi decoction chemotherapy-induced anorexia cisplatin TLR4/MyD818/NF-κB p65 gut microbiota rat
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Research Status of TCM Rehabilitation in Chronic Obstructive Pulmonary Disease (COPD)
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作者 Ran MO Yuanhui JIANG 《Medicinal Plant》 2024年第3期67-70,共4页
This paper mainly analyzes the application status of TCM rehabilitation in chronic obstructive pulmonary disease(COPD),hoping to provide support and help for clinical staff through this study,and promote the further d... This paper mainly analyzes the application status of TCM rehabilitation in chronic obstructive pulmonary disease(COPD),hoping to provide support and help for clinical staff through this study,and promote the further development of COPD rehabilitation program. 展开更多
关键词 CHRONIC OBSTRUCTIVE PULMONARY disease (COPD) tcm Rehabilitation Diagnosis and treatment
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Exploring the Future Of TCM Cooperation--2024 China-ASEAN Traditional Chinese Medicine Industry Exchange and Promotion Conference in Taiyuan
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作者 Xu Hao Li Yingjing 《China Report ASEAN》 2024年第8期54-57,共4页
“Traditional Chinese medicine(TCM)is very popular in Cambodia because it can treat a variety of diseases,”said Nhek Soparama,ministercounselor of the Embassy of Cambodia in China,at the 2024 China-ASEAN Traditional ... “Traditional Chinese medicine(TCM)is very popular in Cambodia because it can treat a variety of diseases,”said Nhek Soparama,ministercounselor of the Embassy of Cambodia in China,at the 2024 China-ASEAN Traditional Chinese Medicine Industry Exchange and Promotion Conference in Taiyuan,Shanxi Province,on July 26.“Over the past two years,more than 20,000 Cambodians have received TCM treatment.” 展开更多
关键词 Taiyuan treatment tcm
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一种变输入电压的TCM滞环电流逆变器控制方法
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作者 卫芃毅 任一峰 《机械工程与自动化》 2024年第5期27-28,31,共3页
针对TCM逆变器在过零点附近因开关频率过高导致并网电流THD和开关损耗增加的问题,提出一种变输入电压的准恒频控制方法。通过控制后级输入电压限制TCM电流源型逆变器的最大开关频率,降低了并网电流的谐波失真率。通过Simulink搭建仿真模... 针对TCM逆变器在过零点附近因开关频率过高导致并网电流THD和开关损耗增加的问题,提出一种变输入电压的准恒频控制方法。通过控制后级输入电压限制TCM电流源型逆变器的最大开关频率,降低了并网电流的谐波失真率。通过Simulink搭建仿真模型,对并网电流进行FFT分析,结果显示该方法相比传统的TCM调制方法使得并网电流的THD下降了0.02%,验证了所提方案的可行性。 展开更多
关键词 逆变器 tcm 滞环电流控制 软开关
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具有全重联功能的TCMS系统方案论述
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作者 张晓雨 王天宇 郝宏峰 《铁道车辆》 2024年第4期77-81,共5页
城市轨道交通线路客流量的特征具有不同运营阶段或全天内不同时段以及不同区段差异较大等特点,传统的固定编组运营模式无法很好地解决运力、客流、能耗匹配的问题。根据城市轨道交通在不同区段、时段下的客流特征,在保证较高列车服务水... 城市轨道交通线路客流量的特征具有不同运营阶段或全天内不同时段以及不同区段差异较大等特点,传统的固定编组运营模式无法很好地解决运力、客流、能耗匹配的问题。根据城市轨道交通在不同区段、时段下的客流特征,在保证较高列车服务水平的条件下,通过绞线式列车总线(Wire Train Bus,WTB)架构以及列车之间全重联,使得头车可以控制后面与其重联的列车,达到所有列车控制指令完全一致性,最终达到灵活改变列车编组长度来实现运力与客流需求动态匹配,合理优化各时段列车满载率,有效解决动力浪费或服务水平低下的问题。 展开更多
关键词 城市轨道交通 tcmS 全重联 WTB架构 客流特征 灵活编组
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地铁TCMS系统功能探析
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作者 袁玲 高艺 《中国科技期刊数据库 工业A》 2024年第11期103-107,共5页
TCMS(列车控制与监控系统)是电客车的中枢系统,不仅全面监控并诊断着车辆各子系统的运行状态,还承担着人机交互信息的桥梁作用。其系统架构复杂而精密,包括中央控制单元、车辆控制单元等,通过网络拓扑结构紧密相连。TCMS不仅实现列车级... TCMS(列车控制与监控系统)是电客车的中枢系统,不仅全面监控并诊断着车辆各子系统的运行状态,还承担着人机交互信息的桥梁作用。其系统架构复杂而精密,包括中央控制单元、车辆控制单元等,通过网络拓扑结构紧密相连。TCMS不仅实现列车级的控制策略与协调,还具备故障诊断、数据记录与远程通信等多样化功能,确保列车安全高效运行。 展开更多
关键词 tcmS系统 列车级功能 拓扑结构
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城市轨道交通ATO与TCMS功能融合设计
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作者 林业 陈志 +1 位作者 卢昱昊 黄盼 《城市轨道交通研究》 北大核心 2024年第5期175-178,189,共5页
[目的]基于ATO(列车自动运行系统)与TCMS(列车控制及监控系统)的基本功能,采用融合设计的方式可简化重复设计,并优化列车控制功能,故有必要开展相关研究。[方法]通过综合分析现阶段ATO和TCMS在城市轨道交通中的功能和应用,研究ATO和TCM... [目的]基于ATO(列车自动运行系统)与TCMS(列车控制及监控系统)的基本功能,采用融合设计的方式可简化重复设计,并优化列车控制功能,故有必要开展相关研究。[方法]通过综合分析现阶段ATO和TCMS在城市轨道交通中的功能和应用,研究ATO和TCMS控制功能融合,提出了一种列车系统集成化和控制功能更佳的一体化设计方案,并分析了功能融合所带来的优势。[结果及结论]融合ATO和TCMS功能后,可提高列车的系统集成度,使之更容易实现智能化,但也需要克服技术和管理等方面的挑战。 展开更多
关键词 城市轨道交通 自动列车运行系统 列车控制及监控系统 功能融合
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应用于中继卫星通信系统的16QAM-TCM技术研究 被引量:1
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作者 张秀宁 李正岱 张旭 《遥测遥控》 2024年第2期42-49,共8页
网格编码调制技术可以在不改变信息传输频谱带宽的条件下,改善信噪比,减少发射功率,降低误码率,其实现的方法是分割星座图形成子集,逐步增大星座图中信号点之间的最小欧氏距离。本论文在项目组自研的中继卫星通信系统仿真平台上,仿真了8... 网格编码调制技术可以在不改变信息传输频谱带宽的条件下,改善信噪比,减少发射功率,降低误码率,其实现的方法是分割星座图形成子集,逐步增大星座图中信号点之间的最小欧氏距离。本论文在项目组自研的中继卫星通信系统仿真平台上,仿真了8PSK与16QAM-TCM两种调制技术的解调性能,仿真曲线反映了误比特率需求与所需信噪比之间的关系。仿真结果表明:(1)在理想信道条件、I/Q(Inphase/Quadrature,同相/正交)幅相不平衡、幅频特性、群时延、相位噪声、功率放大器饱和点条件下,假设误比特率需求为1E-7,16QAM-TCM技术的信噪比需求与8PSK调制技术的信噪比需求相比,分别可节省8.85 dB、9.04 dB、8.45 dB、10.2 dB、8.5 dB、14.6 dB的信噪比;(2)在非线性信道条件下,当信噪比增大时,8PSK调制技术的误比特率在1E-3数量级附近波动,不再变化;(3)假设需求的误比特率为1E-7,16QAMTCM调制技术非线性信道信噪比仿真值与理想信道信噪比仿真值相比,损失了4.8 dB。 展开更多
关键词 网格编码调制 中继卫星通信系统仿真 16QAM-tcm 8PSK 非线性信道
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32APSK-TCM技术在中继卫星通信系统中的应用研究
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作者 张秀宁 张旭 王义强 《遥测遥控》 2024年第5期58-67,共10页
32APSK(Amplitude Phase Shift Keying,幅相键控)技术与32QAM(Quadrature Amplitude Modulation,正交幅度调制)技术相比,减少了幅值数目,适合于中继卫星通信系统非线性信道。TCM(Trellis Code Modulation,网格编码调制)技术将信道编码... 32APSK(Amplitude Phase Shift Keying,幅相键控)技术与32QAM(Quadrature Amplitude Modulation,正交幅度调制)技术相比,减少了幅值数目,适合于中继卫星通信系统非线性信道。TCM(Trellis Code Modulation,网格编码调制)技术将信道编码与多元调制相结合,在不增加频谱带宽的条件下,可以降低发射功率,减少能耗,降低对功率放大器技术指标的要求,有利于实现卫星有效载荷的轻型化与小型化。本文将32APSK技术与TCM技术相结合,提出了一种32APSK-TCM技术,详细论述了基于32APSK-TCM技术的星座子集分割方法和星座点选择方法,并对32APSK-TCM技术的性能进行了理论分析。在项目组自研的中继卫星通信系统仿真平台上,对32APSK-TCM技术进行了仿真验证。仿真结果表明:在理想信道条件、I/Q(Inphase/Quadrature,同相/正交)幅相不平衡、幅频特性、群时延、相位噪声、功率放大器饱和点、非线性信道条件下,需要的最大误比特率为1E-6时,32APSK-TCM技术的最小信噪比与16APSK调制技术的最小信噪比相比,分别节省了13.29 dB,13.29 dB,14.84 dB,15.54 dB,15.11 dB,15.77 dB,16.37 dB。 展开更多
关键词 32APSK-tcm技术 中继卫星通信系统 非线性信道
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