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6G新型多址技术探讨

中兴通讯技术 2024年第1期30卷 3-11页

作者：严春林袁弋非王森吕思颍中关村泛联移动通信技术创新应用研究院中国北京100080 中国移动通信有限公司研究院中国北京100053

6G大规模通信场景迫切需要使用新型多址技术解决海量终端随机接入问题,其他多种场景也需要6G新型多址来提高传输速率,降低接入时延,增强传输可靠性。回顾了5G非正交多址的标准化历程,总结了各种非正交多址技术的特点,以及在标准化过程... 详细信息

6G大规模通信场景迫切需要使用新型多址技术解决海量终端随机接入问题,其他多种场景也需要6G新型多址来提高传输速率,降低接入时延,增强传输可靠性。回顾了5G非正交多址的标准化历程,总结了各种非正交多址技术的特点,以及在标准化过程中的经验,研究并评估了稀疏交织多址和基于Reed-Muller码的无源多址两种新型多址性能。本研究可为未来6G新型多址的选型和标准化提供有益参考。

关键词：非正交多址接入 6G新型多址接入压缩感知稀疏交织多址接入

Multi-User Connection Performance Assessment of NOMA Schemes for Beyond 5G

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China Communications 2020年第12期17卷 206-216页

作者： Baoxi Wang chunlin yan Wei Liu Hailin Zhang School of telecommunication engineering Xidian UniversityXi’an 710071Shannxi China CETC advanced mobile communication innovation center Shanghai 200331China The 50th research institute of China electronics technology group corporation Shanghai 200331China The 7th research institute of China electronics technology group corporation Guangzhou 510310China

Non-orthogonal multiple access(NOMA)is proved to be useful to satisfy the requirements of beyond 5th generation such as massive multi-user *** we compare the performances of two NOMA schemes:low code rate spreading(LCRS)scheme and interleaver division multiple access(IDMA)*** is found that LCRS is superior to IDMA when number of users is small due to coding gain *** IDMA is preferred when number of users is high because repetition applied in IDMA can suppress multi-user interference *** interleaver is important in IDMA for randomizing the ***,this paper evaluates the impact of channel *** is observed that Log-MAP decoder has much better performance than that of Max-Log-MAP when number of users is ***,it is recommended to use Log-MAP decoder in NOMA in high user overloading *** also compared the performance of NOMA by using different type of channel *** find that NOMA using specific convolutional code has a better performance than that of using specific LDPC code when number of users is high.

关键词： NOMA multi-user connection LCRS IDMA iterative receiver channel coding

Neuroprotective effects of rutaecarpine on cerebral ischemia reperfusion injury

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Neural Regeneration Research 2013年第22期8卷 2030-2038页

作者： chunlin yan Ji Zhang Shu Wang Guiping Xue Yong Hou Department of Pharmacology Hebei North University

Rutaecarpine, an active component of the traditional Chinese medicine Tetradium ruticarpum, has been shown to improve myocardial ischemia repeffusion injury. Because both cardiovascular and cerebrovascular diseases are forms of ischemic vascular disease, they are closely related. We hypothesized that rutaecarpine also has neuroprotective effects on cerebral ischemia reperfusion injury. A cerebral ischemia reperfusion model was established after 84, 252 and 504 pg/kg rutae- carpine were given to mice via intrapedtoneal injection, daily for 7 days. Results of the step through test, 2,3,5-triphenyl tetrazolium chloride dyeing and oxidative stress indicators showed that rutae- carpine could improve learning and memory ability, neurological symptoms and reduce infarction volume and cerebral water content in mice with cerebral ischemia reperfusion injury. Rutaecarpine could significantly decrease the malondialdehyde content and increase the activities of superoxide dismutase and glutathione peroxidase in mouse brain. Therefore, rutaecarpine could improve neu- rological function following injury induced by cerebral ischemia reperfusion, and the mechanism of this improvement may be associated with oxidative stress. These results verify that rutaecarpine has neuroprotective effects on cerebral ischemia reperfusion in mice.

关键词： neural regeneration traditional Chinese medicine rutaecarpine cerebral ischemia reperfusion learning and memory infarct volume free radical glutathione peroxidase superoxide dismutase malondialdehyde grants-supported paper neuroregeneration

On Uplink Non-Orthogonal Multiple Access for 5G：Opportunities and Challenges

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China Communications 2017年第12期14卷 142-152页

作者： Li Tian chunlin yan Weimin Li Zhifeng Yuan Wei Cao Yifei Yuan ZTE Corporation South Keji Road 55 Shenzhen 508118 China

In this paper,the concept of grantfree non-orthogonal multiple access(NOMA) for uplink data transmission is *** in combination with grant-free can be applied to ultra reliability low latency communication(URLLC),massive machine type communication(m MTC),enhanced mobile broadband(e MBB) small packet and two-step random-access channel(RACH) *** advantages of grant-free NOMA are low latency and signaling overhead,high access capability and efficient resource *** uplink NOMA schemes are summarized and preliminary comparison among a subset of schemes are ***,design aspects for grant-free NOMA are discussed,with special notes on particular issues such as blind UE identification and transmitter/receiver(Tx/Rx) impairments in realistic deployment.

关键词： 5G New Radio non-orthogona multiple access grant-free transmission

Chrysophanol attenuates lead exposure-induced injury to hippocampal neurons in neonatal mice

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Neural Regeneration Research 2014年第9期9卷 924-930页

作者： Ji Zhang chunlin yan Shu Wang Yong Hou Guiping Xue Li Zhang Department of Pharmacology Hebei North University

Previous studies have shown that chrysophanol protects against learning and memory impairments in lead-exposed adult mice. In the present study, we investigated whether chrysophanol can alleviate learning and memory dysfunction and hippocampal neuronal injury in lead-exposed neonatal mice. At the end of lactation, chrysophanol（0.1, 1.0, 10.0 mg/kg） was administered to the neonatal mice by intraperitoneal injection for 15 days. Chrysophanol significantly alleviated injury to hippocampal neurons and improved learning and memory abilities in the lead-poisoned neonatal mice. Chrysophanol also significantly decreased lead content in blood, brain, heart, spleen, liver and kidney in the lead-exposed neonatal mice. The levels of malondialdehyde in the brain, liver and kidney were significantly reduced, and superoxide dismutase and glutathione peroxidase activities were significantly increased after chrysophanol treatment. Collectively, these findings indicate that chrysophanol can significantly reduce damage to hippocampal neurons in lead-exposed neonatal mice.

关键词： nerve regeneration traditional Chinese medicine chrysophanol lead poisoning lead malondialdehyde superoxide dismutase glutathione peroxidase neurons neonatal mice antioxidant learning and memory Morris water maze step-down test hippocampal neurons ultrastructure Medical Scientific Research Project of Health Bureau of Hebei Province neural regeneration

穴位贴敷联合电针治疗蛛网膜下腔出血后脑血管痉挛患者的临床效果

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反射疗法与康复医学 2024年第6期5卷 4-7页

作者：王文涛闫春林王力明聊城市第二人民医院重症医学科山东聊城252600 聊城市第二人民医院护理部山东聊城252600

目的探讨蛛网膜下腔出血(SAH)后脑血管痉挛(CVS)患者采用穴位贴敷联合电针治疗的效果.方法选取聊城市第二人民医院2022年4月—2023年9月收治的86例SAH后CVS患者为研究对象,根据随机数字表法将其分为对照组及研究组.对照组(n=43)采用电... 详细信息

目的探讨蛛网膜下腔出血(SAH)后脑血管痉挛(CVS)患者采用穴位贴敷联合电针治疗的效果.方法选取聊城市第二人民医院2022年4月—2023年9月收治的86例SAH后CVS患者为研究对象,根据随机数字表法将其分为对照组及研究组.对照组(n=43)采用电针治疗,研究组(n=43)采用穴位贴敷联合电针治疗.比较两组患者的临床疗效、大脑中动脉(MCA)血流速度及日常生活能力.结果研究组的治疗总有效率为93.02%,高于对照组的76.74%,差异有统计学意义(P<0.05).治疗后,两组的MCA血流速度均下降,且研究组慢于对照组,差异有统计学意义(P<0.05).治疗后,两组的Barthel指数评分均升高,且研究组高于对照组,差异有统计学意义(P<0.05).结论采用穴位贴敷联合电针治疗SAH后CVS,可提高临床疗效,改善患者MCA血流速度,促进其日常生活能力提升.

关键词：蛛网膜下腔出血脑血管痉挛穴位贴敷电针

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白噪声联合握力球干预对心房颤动射频消融术患者的影响

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护理学杂志 2024年第15期39卷 23-26页

作者：王彦哲赵静闫春林杨春晓郝恩刚王平凡聊城市第二人民医院山东第一医科大学附属聊城二院介入诊疗室山东聊城252600 聊城市第二人民医院山东第一医科大学附属聊城二院护理部山东聊城252600 聊城市第二人民医院山东第一医科大学附属聊城二院心内科山东聊城252600

目的探讨白噪声联合握力球干预对心房颤动射频消融术患者的影响。方法将177例行射频消融术的心房颤动患者按照随机数字表法分为三组各59例。对照组术中给予常规护理;握力球组在对照组的基础上持握力球,术中不适时随意加压握力球;白噪声... 详细信息

目的探讨白噪声联合握力球干预对心房颤动射频消融术患者的影响。方法将177例行射频消融术的心房颤动患者按照随机数字表法分为三组各59例。对照组术中给予常规护理;握力球组在对照组的基础上持握力球,术中不适时随意加压握力球;白噪声+握力球组(联合组)在握力球组的基础上进入手术室即佩戴耳机播放预先选择的白噪声音乐。结果三组分别有51、52、50例完成研究。干预后,在消融术10 min时(T2)、消融到左右肺静脉前壁(T3)和后壁(T4)时,三组疼痛评分、焦虑评分、芬太尼使用总剂量比较,差异有统计学意义,且联合组显著低于或少于握力球组和对照组(均P<0.05)。三组T2、T3、T4的生命体征比较,差异有统计学意义,联合组心率及收缩压的稳定性优于握力球组和对照组(均P<0.05)。结论白噪声联合握力球干预可有效缓解心房颤动患者在射频消融术中的疼痛感和焦虑情绪,维持患者生命体征稳定。

关键词：心房颤动射频消融术疼痛白噪声握力球焦虑芬太尼生命体征

通窍活血汤联合针刺治疗重度颅脑损伤的临床效果

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中国医学创新 2024年第24期21卷 28-31页

作者：王文涛闫春林王力明王爱滨聊城市第二人民医院重症医学科山东临清252600 聊城市第二人民医院护理部山东临清252600 聊城市第二人民医院神经内科山东临清252600

目的:探讨重度颅脑损伤(STBI)患者采用通窍活血汤联合针刺治疗的临床效果。方法:选取2021年2月—2024年1月聊城市第二人民医院收治的STBI患者共计80例,以随机数字表法分成研究组(40例)与对照组(40例),对照组采用常规西药治疗,研究组在... 详细信息

目的:探讨重度颅脑损伤(STBI)患者采用通窍活血汤联合针刺治疗的临床效果。方法:选取2021年2月—2024年1月聊城市第二人民医院收治的STBI患者共计80例,以随机数字表法分成研究组(40例)与对照组(40例),对照组采用常规西药治疗,研究组在对照组基础上采用通窍活血汤联合针刺治疗,比较两组临床疗效、中医证候积分、预后情况、血液流变学指标。结果:统计治疗总有效率,研究组(95.00%)较对照组(77.50%)高,差异有统计学意义(P<0.05);两组治疗后中医证候积分均下降,研究组较对照组低,差异均有统计学意义(P<0.05);两组治疗后格拉斯哥预后量表(GOS)评分均升高,研究组较对照组高,差异均有统计学意义(P<0.05);两组治疗后全血低切黏度(LBV)、全血高切黏度(HBV)均下降,研究组均较对照组低,差异均有统计学意义(P<0.05)。结论:通窍活血汤联合针刺应用于STBI患者治疗中,能够提高临床效果,降低中医证候积分,改善预后情况及血液流变学指标。

关键词：通窍活血汤针刺重度颅脑损伤

微孔穿刺引流联合尿激酶治疗对脑出血后脑水肿程度及血清丙二醛、基质金属蛋白酶-9和细胞黏附分子-1水平的影响

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临床外科杂志 2024年第8期32卷 814-817页

作者：王文涛闫春林王力明王传刚山东省聊城市第二人民医院重症医学科 252600 山东省聊城市第二人民医院护理部 252600 山东省聊城市第二人民医院神经外科 252600

目的观察微孔穿刺引流术(对照组)联合尿激酶(UK)治疗对脑出血后脑水肿程度及血清丙二醛(MDA)、基质金属蛋白酶-9(MMP-9)和细胞黏附分子-1(ICAM-1)水平的影响。方法2020年1月~2022年9月在我院收治的高血压性脑出血(HICH)病人82例,根据不... 详细信息

目的观察微孔穿刺引流术(对照组)联合尿激酶(UK)治疗对脑出血后脑水肿程度及血清丙二醛(MDA)、基质金属蛋白酶-9(MMP-9)和细胞黏附分子-1(ICAM-1)水平的影响。方法2020年1月~2022年9月在我院收治的高血压性脑出血(HICH)病人82例,根据不同治疗方案分为两组,观察组44例,采用对照组联合UK治疗,对照组38例,采用对照组治疗。观察两组病人脑水肿体积、神经功能[美国国立卫生研究院卒中量表(NIHSS)]、血清学指标MDA、MMP-9和ICAM-1。记录术后并发症发生情况,对比两组术后3个月的预后情况[格拉斯哥结局量表评分(GOS)、日常生活能力(ADL)评分和死亡情况]。结果术后14天,观察组的周围脑水肿体积为(14.76±2.39)ml,低于对照组的(16.87±2.24)ml,差异有统计学意义(P0.05)。两组术后3个月内均无死亡病例。观察组术后3个月的GOS评分和ADL评分分别为(4.03±0.92)分、(71.21±12.65)分,均高于对照组的(3.52±1.12)分、(62.98±15.58)分,两组比较差异有统计学意义(P<0.05)。结论HICH病人应用对照组联合UK治疗可有效控制脑水肿,下调MDA、MMP-9、ICAM-1水平,保护神经功能,改善预后。

关键词：微孔穿刺引流术尿激酶脑出血脑水肿