TD-SCDMA基站电磁辐射预测方法研究

发布时间：2018-06-04 19:26

本文选题：TD-SCDMA + 电磁辐射　；参考：《湘潭大学》2017年硕士论文

【摘要】：随着移动通信行业迅速发展,人们越来越重视基站电磁辐射造成的影响。针对TD-SCDMA移动通信系统,研究人员在最大电磁辐射的基础上,引入最大占空比来预测平均电磁辐射强度。但TD-SCDMA信号实际占空比往往低于最大占空比,导致预测结果高于真实平均电磁辐射强度。针对上述问题,本文通过分析TD-SCDMA系统信道资源分配方式,根据信道分配策略计算基站下行发射信号实际占空比,再通过实际占空比准确预测TD-SCDMA基站平均电磁辐射强度。本文主要内容及创新工作如下:(1)对于信道分割策略下的TD-SCDMA基站电磁辐射,本文提出了一种基于信道分割的TD-SCDMA基站电磁辐射预测方法。该方法根据TD-SCDMA系统的信道分割策略建立业务排队模型,利用业务排队模型计算基站TD-SCDMA信号在每小时内的实际平均占空比,通过实际平均占空比和信号的最大电磁辐射强度来预测TD-SCDMA基站平均电磁辐射强度。为了保证预测结果的准确性,本文还对频谱分析仪参数设置进行了分析。该方法的预测结果十分接近真实的平均辐射强度,其偏差率仅为2.9%,同时,测量时间由原来的30分钟缩短至1分钟,预测效率有较大的提高。(2)对于信道共享策略下的TD-SCDMA基站电磁辐射,本文提出一种基于信道共享的TD-SCDMA基站电磁辐射预测方法。该方法根据TD-SCDMA系统的信道共享策略建立马尔科夫模型,利用马尔科夫模型计算信号实际占空比,从而准确预测信道共享策略下的TD-SCDMA基站平均电磁辐射强度。针对信道共享策略下的TD-SCDMA基站平均电磁辐射强度,该方法预测结果与真实值之间的偏差率为3.4%。
[Abstract]:With the rapid development of mobile communication industry, people pay more and more attention to the effect of base station electromagnetic radiation. For TD-SCDMA mobile communication systems, the maximum duty cycle is introduced to predict the average electromagnetic radiation intensity on the basis of the maximum electromagnetic radiation. However, the actual duty cycle of TD-SCDMA signal is often lower than the maximum duty cycle, which leads to the predicted result being higher than the real average electromagnetic radiation intensity. In order to solve the above problems, this paper analyzes the channel resource allocation of TD-SCDMA system, calculates the actual duty cycle of the downlink transmission signal of the base station according to the channel allocation strategy, and then accurately predicts the average electromagnetic radiation intensity of the TD-SCDMA base station by the actual duty cycle. The main contents and innovations of this paper are as follows: (1) for the electromagnetic radiation of TD-SCDMA base station under channel division strategy, this paper proposes a prediction method of electromagnetic radiation based on channel division for TD-SCDMA base station. In this method, the traffic queuing model is established according to the channel division strategy of TD-SCDMA system, and the actual average duty cycle of base station TD-SCDMA signal within an hour is calculated by using the traffic queuing model. The average electromagnetic radiation intensity of TD-SCDMA base station is predicted by the actual average duty cycle and the maximum electromagnetic radiation intensity of the signal. In order to ensure the accuracy of the prediction results, the parameter setting of the spectrum analyzer is also analyzed. The predicted results of this method are very close to the real average radiation intensity, and the deviation rate is only 2.9. At the same time, the measuring time is shortened from 30 minutes to 1 minute. For TD-SCDMA base station electromagnetic radiation under channel sharing strategy, this paper proposes a TD-SCDMA base station electromagnetic radiation prediction method based on channel sharing. According to the channel sharing strategy of TD-SCDMA system, the Markov model is established, and the actual duty cycle of the signal is calculated by using the Markov model, which can accurately predict the average electromagnetic radiation intensity of the TD-SCDMA base station under the channel sharing strategy. For the average electromagnetic radiation intensity of the TD-SCDMA base station under the channel sharing strategy, the deviation rate between the prediction result and the real value is 3.4%.
【学位授予单位】：湘潭大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.5

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