本文選題：DSM + 低復雜度　； 參考：《電子科技大學》2017年碩士論文

【摘要】：隨著綠色通信理念的興起,空間調(diào)制(Spatial Modulation,SM)技術(shù)引起了學術(shù)界的廣泛關(guān)注�？臻g調(diào)制系統(tǒng)在每個時隙僅使用單根天線發(fā)送信息,從而激活天線的索引也用于攜帶調(diào)制信息。其發(fā)射端只需一個射頻單元,節(jié)省了能耗。而且單天線發(fā)送的特性又避免了MIMO系統(tǒng)的信道間干擾(Inter Channel Interference,ICI)、發(fā)射天線同步(Inter Antenna Synchronization,IAS)等問題,并為接收端低復雜度的檢測提供了可能。然而,空間調(diào)制技術(shù)也存在一些問題和缺陷。一方面,空間調(diào)制系統(tǒng)的接收端需要精確的信道狀態(tài)消息(Channel State Information,CSI)以進行相干檢測,這對信道估計提出了很高的要求;另一方面,在天線數(shù)量較多的情況下,多天線信道估計非常復雜。針對上述問題,本文研究了差分空間調(diào)制(Differential Spatial Modulation,DSM)系統(tǒng),它既保留了空間調(diào)制系統(tǒng)的優(yōu)點,又簡化了接收端的檢測,無需信道估計。本文針對差分空間調(diào)制系統(tǒng),展開如下的研究:第一章介紹了差分空間調(diào)制系統(tǒng)以及它在發(fā)射端、接收端、性能分析各方面的發(fā)展現(xiàn)狀。第二章詳細介紹了差分空間調(diào)制系統(tǒng)的收發(fā)端原理和性能分析,并提出了一種基于歐氏距離疊加的低復雜度檢測算法,通過仿真驗證了提出算法的優(yōu)勢。第三章介紹了幅移相鍵控差分空間調(diào)制(DSM-APSK)系統(tǒng),提出了一種改進的DSM-APSK系統(tǒng)。通過性能分析進一步優(yōu)化了提出系統(tǒng)的星座圖設(shè)計,最后通過仿真驗證了提出的新系統(tǒng)的優(yōu)勢。第四章探討了編碼差分空間調(diào)制系統(tǒng)。首先介紹了編碼差分空間調(diào)制系統(tǒng)的收發(fā)機原理。然后提出了一種低復雜度的軟檢測算法。通過外部信息轉(zhuǎn)移特性分析、復雜度分析和MATLAB仿真比較了提出的算法和最優(yōu)的最大后驗概率檢測算法,驗證了提出的算法的優(yōu)勢。第五章總結(jié)了全文內(nèi)容,探討了未來的研究方向。
[Abstract]:With the rise of the concept of green communication, spatial modulation (SM) technology has attracted wide attention in academic circles. The spatial modulation system transmits information only using a single antenna in each slot, so that the index of the active antenna is also used to carry the modulation information. The transmitter only needs one RF unit, which saves energy consumption. Moreover, the characteristics of single antenna transmit can avoid the problems of inter channel interference (ICI) and transmit antenna synchronization (IAS), and make it possible to detect the receiver with low complexity. However, there are some problems and defects in spatial modulation technology. On the one hand, the receiver of spatial modulation system needs accurate Channel State Information (CSI) for coherent detection, which makes a high demand for channel estimation; on the other hand, when the number of antennas is large, Multi-antenna channel estimation is very complex. To solve the above problems, the differential Spatial Modulation (DSM) system is studied in this paper. It not only retains the advantages of the spatial modulation system, but also simplifies the detection of the receiver without channel estimation. In this paper, the research of differential space modulation system is presented as follows: in chapter 1, the development of differential space modulation system and its development in transmitter, receiver and performance analysis are introduced. In chapter 2, the principle and performance analysis of the transceiver of differential space modulation system are introduced in detail, and a low complexity detection algorithm based on Euclidean distance superposition is proposed. The advantages of the proposed algorithm are verified by simulation. In chapter 3, the amplitude shift keying differential spatial modulation (DSM-APSK) system is introduced, and an improved DSM-APSK system is proposed. The constellation diagram design of the proposed system is further optimized by performance analysis. Finally, the advantages of the proposed new system are verified by simulation. Chapter 4 discusses the coded differential space modulation system. Firstly, the principle of transceiver in coded differential space modulation system is introduced. Then a low complexity soft detection algorithm is proposed. The advantages of the proposed algorithm are verified by comparing the proposed algorithm with the optimal maximum posterior probability detection algorithm through the analysis of external information transfer characteristics, complexity analysis and MATLAB simulation. The fifth chapter summarizes the content of the paper and discusses the future research direction.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN911.3

【參考文獻】

相關(guān)期刊論文 前2條

1 朱近康;許莉;;綠色蜂窩網(wǎng)絡的頻譜效率與能效函數(shù)[J];通信學報;2013年01期

2 羅濤;李少謙;;MIMO技術(shù)的發(fā)展[J];中興通訊技術(shù);2006年02期

，

本文編號：2118280