本文選題：TD-SCDMA + 電磁輻射　； 參考：《湘潭大學》2017年碩士論文

【摘要】：隨著移動通信行業(yè)迅速發(fā)展,人們越來越重視基站電磁輻射造成的影響。針對TD-SCDMA移動通信系統(tǒng),研究人員在最大電磁輻射的基礎(chǔ)上,引入最大占空比來預測平均電磁輻射強度。但TD-SCDMA信號實際占空比往往低于最大占空比,導致預測結(jié)果高于真實平均電磁輻射強度。針對上述問題,本文通過分析TD-SCDMA系統(tǒng)信道資源分配方式,根據(jù)信道分配策略計算基站下行發(fā)射信號實際占空比,再通過實際占空比準確預測TD-SCDMA基站平均電磁輻射強度。本文主要內(nèi)容及創(chuàng)新工作如下:(1)對于信道分割策略下的TD-SCDMA基站電磁輻射,本文提出了一種基于信道分割的TD-SCDMA基站電磁輻射預測方法。該方法根據(jù)TD-SCDMA系統(tǒng)的信道分割策略建立業(yè)務排隊模型,利用業(yè)務排隊模型計算基站TD-SCDMA信號在每小時內(nèi)的實際平均占空比,通過實際平均占空比和信號的最大電磁輻射強度來預測TD-SCDMA基站平均電磁輻射強度。為了保證預測結(jié)果的準確性,本文還對頻譜分析儀參數(shù)設置進行了分析。該方法的預測結(jié)果十分接近真實的平均輻射強度,其偏差率僅為2.9%,同時,測量時間由原來的30分鐘縮短至1分鐘,預測效率有較大的提高。(2)對于信道共享策略下的TD-SCDMA基站電磁輻射,本文提出一種基于信道共享的TD-SCDMA基站電磁輻射預測方法。該方法根據(jù)TD-SCDMA系統(tǒng)的信道共享策略建立馬爾科夫模型,利用馬爾科夫模型計算信號實際占空比,從而準確預測信道共享策略下的TD-SCDMA基站平均電磁輻射強度。針對信道共享策略下的TD-SCDMA基站平均電磁輻射強度,該方法預測結(jié)果與真實值之間的偏差率為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%.
【學位授予單位】：湘潭大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN929.5

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本文編號：1978571