WINNER+项目最终信道模型详解

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"这是一份关于Winner2(WINNER+)项目的D5.3_v1.0文档,主要聚焦于无线通信中的信道建模。该文档由Petteri Heino编辑,作者包括Juha Meinilä、Pekka Kyösti、Lassi Hentilä、Tommi Jämsä、Essi Suikkanen、Esa Kunnari和Milan Narandžić等人。这份1.0版本的文档创建于2010年6月30日,包含了WINNER+项目中520MHz到800MHz、2.53GHz和3.55GHz频段的测量结果。它不仅更新了WINNER II时期的信道模型,还定义并实现了用于硬件仿真测试的信道模型,特别是针对Over-the-Air (OTA)测试的模型。此外,文档中还介绍了OTA测试的一般方法,并且这些信道模型和测试方法学已被贡献给监管和标准化机构。WP5的工作推广也在这部分有所提及。关键词包括:信道模型、实施、无线电、传播、路径、路径损耗等。" Winner2是Cellic项目CP5-026“无线世界倡议新无线电-WINNER+”的一部分,其核心关注的是无线通信的信道建模。信道建模在无线通信领域至关重要,因为它模拟了电磁波在无线通信环境中的传播行为,如反射、折射、散射等,从而帮助设计和优化无线通信系统。这份文档详细记录了在多个频段(520MHz至800MHz、2.53GHz和3.55GHz)的测量数据,这些频段涵盖了多种无线通信应用,如移动通信、物联网等。 WINNER+项目不仅对原有的WINNER II信道模型进行了升级,使其更适合现代无线网络的需求,还特别强调了硬件仿真测试的信道模型。这种模型对于验证和优化通信设备性能,特别是在真实环境中的表现至关重要。OTA测试是评估无线设备在自由空间中性能的重要手段,它能够直接反映设备在实际使用中的信号质量、覆盖范围和抗干扰能力。 此外,项目团队还开发了一套OTA测试的方法学,这是确保无线设备在不同环境条件下性能一致性的关键工具。这种方法学的制定和推广,对于行业标准的制定和监管机构的决策具有重要参考价值。值得一提的是,这些研究成果已经共享给了相关的监管和标准化机构,这对于推动整个行业的技术进步和法规制定起到了积极的作用。 Winner2的D5.3_v1.0文档提供了丰富的无线信道建模信息,涵盖了从理论研究到实际应用的多个层面,对于从事无线通信研究和工程实践的专业人士来说,是一份极具价值的参考资料。

import random import time import csv import os from datetime import datetime users={} for i in range(4): users_id=random.randint(0,10) users_score=random.randint(-8000,8000) users[users_id]=users_score with open('updates.csv','a')as f: csv_re=csv.writer(f) csv_re.writerow([users_id,users_score]) print(f'积分变动:{users_id} {users_score}') def aaa(): global users_id global users_score with open('updates.csv','r')as f: csv_re=csv.reader(f) for row in csv_re: users_id,users_score=row users_id=int(users_id) users_score=int(users_score) users[users_id]+=users_score if users[users_id]<0: users[users_id]=0 return users def bbb(): with open('Candidates.csv','w')as f: csv_re=csv.writer(f) csv_re.writerow([users_id,users_score]) def ccc(): global prize_winner weight=[] prize_winner=[] for uid,users_score in users.items(): if users_score >=3000: weight.append(3) elif users_score >=2000: weight.append(2) elif users_score >=1000: weight.append(1) else: weight.append(0) winner1=random.choices(list(users.keys()),weight) prize_winner.append(winner1[0]) print(f'一等奖:{prize_winner[0]}') def ddd(): winner2 = random.sample(list(users.keys()),2) prize_winner.append(winner2[0][1]) print(f'二等奖:{prize_winner[1]}') del users[prize_winner[1]] def timer(): nowtime=datetime.now() while True: if nowtime.weekday()==2 and nowtime.hour==22 and 0<=nowtime.minute<=60: return True else: return False for i in range(3): while not timer(): time.sleep(60) print(f'第{i+1}轮抽奖开始:') aaa() bbb() ccc() ddd() time.sleep(12) today_date_str=datetime.now().strftime('%Y_%m_%d') os.rename('updates.csv','{}.csv'.format(today_date_str))修改此段代码并且写出新代码

2023-06-08 上传

import random import time import csv from datetime import datetime users={} for i in range(4): users_id=random.randint(0,10) users_score=random.randint(-8000,8000) users[users_id]=users_score with open('updates,csv','a')as f: csv_re=csv.writer(f) csv_re.writerow([users_id,users_score]) print(f'积分变动:{users_id} {users_score}') def aaa(users): global users_id global users_score with open('updates.csv','r')as f: csv_re=csv.reader(f) for row in csv_re: users_id,users_score=row users_id=int(users_id) users_score=int(users_score) users[users_id]+=users_score if users[users_id]<0: users[users_id]=0 return users def bbb(): with open('Candidates.csv','w')as f: csv_re=csv.writer(f) csv_re.writerow([users_id,users_score]) def ccc(): global prize_winner weight=[] prize_winner=[] for uid,users_score in users.items(): if users_score>=3000: weight.append(3) elif users_score>=2000: weight.append(2) elif users_score>=1000: weight.append(1) else: weight.append(0) winner1=random.choices(list(users.keys()),weight) prize_winner.append(winner1) print(f'一等奖:{prize_winner[0]}') def ddd(): weight=[] for uid,users_score in users.items(): if users_score>0: weight.append(1) else: weight.append(0) winner2=random.choices(list(users.keys()),weight) prize_winner.append(winner2) print(f'二等奖:{prize_winner[1]}') del users[prize_winner[1]] def timer(): nowtime=datetime.now() while True: if nowtime.weekday()==2 and nowtime.hour==21 and 0<=nowtime.minute<=60: return True return False for i in range(3): while not timer(): time.sleep(60) print(f'第{i+1}轮抽奖开始:') aaa(users) bbb() ccc() ddd() time.sleep(1200) today_date_str=datetime.now().strftime('%Y_%m_%d') os.rename('updates.csv','{}.csv'.format(today_date_str))找出代码中的问题并写出正确的代码

2023-06-08 上传