本文選題：UMTS系統(tǒng) + FMT系統(tǒng)�。� 參考：《南京郵電大學(xué)》2015年碩士論文

【摘要】：UMTS系統(tǒng)作為3G標(biāo)準(zhǔn)之一從誕生開始就表現(xiàn)出了極強(qiáng)的生命力,持續(xù)向UMTS Advanced、UMTS Beyond演進(jìn),現(xiàn)已成為國際主流3G標(biāo)準(zhǔn),它相比4G LTE系統(tǒng),主要在系統(tǒng)帶寬和數(shù)據(jù)速率上存在劣勢,但在語音業(yè)務(wù)、峰均比和系統(tǒng)覆蓋上甚至優(yōu)于后者。為了保持UMTS演進(jìn)系統(tǒng)的持續(xù)競爭力,3GPP-LTE國際標(biāo)準(zhǔn)化組織針對2G時代遷移過來的零散頻譜,近期啟動了S-UMTS的研究項目。在頻譜聚合條件下,無線通信系統(tǒng)采用的多址技術(shù)必須能靈活支持非連續(xù)占用的頻譜資源分配,提高頻譜利用率,同時有需要保持較好的抗干擾能力。而采用濾波多音調(diào)制技術(shù)(FMT)實現(xiàn)窄帶UMTS信號的聚合傳輸成為3GPP中的候選方案之一,FMT系統(tǒng)通過采用頻譜不重疊且加入部分保護(hù)帶的方法,可以有效地克服頻率復(fù)用帶來的頻偏敏感性問題,另外,FMT系統(tǒng)也可以像OFDM系統(tǒng)一樣可以采用快速傅里葉變換(FFT)大大降低系統(tǒng)實現(xiàn)的復(fù)雜度。本文根據(jù)UMTS系統(tǒng)和FMT系統(tǒng)各自的傳輸特點,提出了一種基于濾波器組傳輸?shù)恼瓗DMA多載波系統(tǒng)方案,我們將其稱之為CDMA-FMT系統(tǒng),它很好地將UMTS系統(tǒng)和FMT系統(tǒng)的優(yōu)點結(jié)合在了一起,不僅保留了良好的抗干擾性能,還提升了UMTS系統(tǒng)的頻譜利用率,代表了未來寬帶無線通信系統(tǒng)多載波傳輸技術(shù)的重要發(fā)展方向,理論分析和仿真結(jié)果均表明,該系統(tǒng)實現(xiàn)復(fù)雜度不高,且其性能介于傳統(tǒng)的UMTS系統(tǒng)和4G LTE系統(tǒng)之間,是3G UMTS系統(tǒng)演進(jìn)的方向之一。
[Abstract]:UMTS system, as one of the 3G standards, has shown great vitality from the beginning of its birth. It continues to evolve to UMTS Advanced and UMTS Beyond. It has now become the mainstream of international 3G standard. Compared with 4G LTE system, there are disadvantages in system bandwidth and data rate, but in voice industry, peak to average ratio and system coverage are even better than the latter. In order to maintain the continuous competitiveness of the UMTS evolution system, the 3GPP-LTE international standardization organization has recently launched the research project of S-UMTS for the scattered spectrum migrated from the 2G era. Under the spectrum aggregation condition, the multiple access technology used in the wireless communication system must be able to support the discontinuous allocation of the spectrum resources and improve the spectrum utilization. It is necessary to maintain better anti-interference ability, and the filter multitone modulation (FMT) technology is one of the candidates in 3GPP, and the FMT system can effectively overcome the frequency bias sensitivity of frequency reuse by using the method of non overlapping spectrum and part protection band. In addition, the FMT system is a FMT system. The system can also reduce the complexity of the system by fast Fourier transform (FFT) like the OFDM system. Based on the respective transmission characteristics of the UMTS system and the FMT system, a narrowband CDMA multicarrier system scheme based on the filter group transmission is proposed. We call it the CDMA-FMT system, which is good for the UMTS system. Combined with the advantages of FMT system, it not only preserves the good anti-interference performance, but also improves the spectrum utilization of the UMTS system. It represents the important development direction of the multi carrier transmission technology in the future broadband wireless communication system. Both theoretical analysis and simulation results show that the system has a low complexity and its performance is in the traditional U. MTS system and 4G LTE system are one of the directions of 3G UMTS system evolution.

【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN929.5;TN713

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