WinnerII信道模型D1.1.2V1.2:链接与系统级模拟

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"winner2 channel model—D1.1.2v1.2 是关于WINNER II项目的信道模型,版本D1.1.2 V1.2,它提供了无线通信中的信道建模方法,主要关注链路和系统级模拟。报告由多个作者和参与者共同完成,涉及多个研究机构和公司,如EBITG、TUI、UOULU、CU/CRC、NOKIA等,属于工作包WP1 Channel Model的一部分。文档总页数为82页,版本号为1.1,安全性为公开(PU),性质为研究(R)。" WINNER II(Wireless World Initiative New Radio - Phase II)是一个欧洲电信标准化研究所(ETSI)领导的项目,旨在为新一代无线通信系统开发全面的信道模型。这个D1.1.2 V1.2版本的文档详细描述了这些信道模型,涵盖了用于链接和系统级别仿真的两种模型:通用模型和聚类延迟线模型。这两种模型对于理解信号在不同传播环境下的行为至关重要。 1. **通用模型**:这种模型适用于广泛的传播条件,旨在提供一种普遍适用的信道行为描述,可用于各种无线通信环境。它考虑了信号传播的各种因素,如多径传播、衰落、极化等。 2. **聚类延迟线模型**:聚类模型更注重于特定环境下的信道特性,比如城市微蜂窝或农村环境。它通过将信号路径分为不同的簇,每个簇代表一组相关性强的多径分量,来更精确地模拟实际环境中的空间相关性。 文档还强调了关键词如**信道建模**、**无线电信道**、**传播场景**、**信道探测器**、**簇**、**极化**、**测量**、**时延扩展**、**角扩展**、**MIMO**(多输入多输出)和**衰落**。这些关键概念是无线通信信道建模的核心组成部分。 **时延扩展**和**角扩展**是衡量多径传播对信号质量影响的关键参数,它们影响着信号的时频分辨率和系统的性能。**MIMO技术**则利用空间多样性提高数据传输速率和系统可靠性,而**测量**和**信道探测器**则是获取真实世界信道特性的手段,为模型的构建提供数据支持。 最后,文档指出,这些信道模型基于文献调研和实际测量数据,确保了模型的现实性和准确性。然而,文档也包含免责声明,表明模型的设计和描述不承担任何责任,用户应根据自身需求和实际情况进行调整和验证。

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