本文選題：多輸入多輸出 + 空間調(diào)制�。� 參考：《哈爾濱工業(yè)大學(xué)》2017年碩士論文

【摘要】：近些年,移動通信技術(shù)進(jìn)入飛速發(fā)展的時(shí)期,通信系統(tǒng)正朝著更好的速率與質(zhì)量的方向發(fā)展以滿足人們?nèi)找嬖鲩L的需求。空間調(diào)制(Spatial Modulation,SM)作為一種很有發(fā)展?jié)摿Φ男滦驼{(diào)制技術(shù),成為5G技術(shù)中的研究熱點(diǎn)。本文的主要研究工作如下:(1)在空間調(diào)制的背景下,研究一種新型的空間調(diào)制方案,天線波束方向圖調(diào)制(ABPM),利用發(fā)射天線陣列所產(chǎn)生的不同波束方向圖來傳遞信息。這種調(diào)制方案,可以提高信息傳遞的效率并且達(dá)到更強(qiáng)的魯棒性。這種波束方向圖調(diào)制不同于傳統(tǒng)的空間調(diào)制的地方在于,傳遞的信息不僅包含傳統(tǒng)的調(diào)制符號,還包括由天線權(quán)重所決定的天線發(fā)射波形信息。該方案的研究將進(jìn)一步推動空間調(diào)制的發(fā)展,使其不僅僅局限于對單根天線選擇的調(diào)制方法,進(jìn)而進(jìn)一步提升MIMO無線通信的性能。本文首先研究了ABPM調(diào)制的原理,然后對ABPM的誤碼率進(jìn)行了分析,最后進(jìn)行了仿真驗(yàn)證。仿真結(jié)果表明,天線波束方向圖調(diào)制在誤碼率性能上優(yōu)于傳統(tǒng)的SM調(diào)制,在10-2的誤碼率條件下ABPM調(diào)制的誤碼率性能比SM調(diào)制提升了10dB,通過對不同天線方向圖集合的ABPM調(diào)制進(jìn)行仿真,可以看到,當(dāng)集合中天線方向圖之間的相關(guān)性越小時(shí),系統(tǒng)的誤碼率越低。(2)當(dāng)接收機(jī)位于發(fā)射機(jī)不同波瓣的交叉區(qū)域時(shí),ABPM調(diào)制方式在誤碼率方面優(yōu)于傳統(tǒng)的空間調(diào)制。但考慮到接收機(jī)位于幾個(gè)波瓣交叉區(qū)域的概率較低,因此ABPM調(diào)制方式的應(yīng)用存在局限性。針對這個(gè)問題,本文在方向圖綜合算法—Woodword Lawson算法的基礎(chǔ)上,提出了余弦方向圖方法M-CBPM,它克服了ABPM調(diào)制方式的局限性,與傳統(tǒng)的空間調(diào)制技術(shù)相比,新的方向圖設(shè)計(jì)方法在發(fā)射天線多于接收天線的系統(tǒng)中具有更低的誤碼率和更高的信息速率。仿真結(jié)果表明,M-CBPM在誤碼率性能上仍然優(yōu)于SM調(diào)制,并且在通信速率上較ABPM具有很大的優(yōu)勢,而且在移動通信系統(tǒng)中具有較高的可行性。
[Abstract]:In recent years, with the rapid development of mobile communication technology, the communication system is developing towards better speed and quality to meet the increasing demand of people. Spatial Modulation (SM), as a new modulation technology with great potential, has become a research hotspot in 5G technology. The main work of this paper is as follows: (1) under the background of spatial modulation, a new spatial modulation scheme, the antenna beam pattern modulation (ABPM), is studied, and the information is transmitted by using the different beam pattern generated by the transmitting antenna array. This modulation scheme can improve the efficiency of information transmission and achieve stronger robustness. This beam-pattern modulation is different from the traditional spatial modulation in that the transmitted information includes not only the traditional modulation symbols but also the antenna transmitting waveform information which is determined by the antenna weight. The research of this scheme will further promote the development of spatial modulation, and make it not only limited to the modulation method selected for single antenna, but also improve the performance of MIMO wireless communication. In this paper, the principle of ABPM modulation is studied, then the bit error rate of ABPM is analyzed, and the simulation is carried out. Simulation results show that the BER performance of antenna beam pattern modulation is better than that of traditional SM modulation. Under the condition of 10-2 bit error rate, the BER performance of ABPM modulation is 10 dB higher than that of SM modulation. Through the simulation of ABPM modulation of different antenna pattern sets, it can be seen that when the correlation between antenna pattern sets in the set is smaller, The lower the BER of the system, the lower the bit error rate (BER) of ABPM modulation is better than that of traditional spatial modulation when the receiver is located in the crossover region of different lobes of the transmitter. However, the application of ABPM modulation is limited due to the low probability that the receiver is located in several crossover regions. In order to solve this problem, based on the pattern synthesis algorithm-Woodword Lawson algorithm, this paper proposes a cosine pattern map method M-CBPM, which overcomes the limitation of ABPM modulation and is compared with the traditional spatial modulation technology. The new pattern design method has lower bit error rate and higher information rate in systems with more transmitting antennas than receiving antennas. The simulation results show that the BER performance of M-CBPM is still better than that of SM modulation, and it has a great advantage over ABPM in communication rate, and it is more feasible in mobile communication system.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN919.3

【參考文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前2條

1 唐騫;基于空間調(diào)制的多天線傳輸技術(shù)研究[D];電子科技大學(xué);2013年

2 周利滿;基于天線方向圖綜合技術(shù)的蜂窩小區(qū)覆蓋控制與優(yōu)化研究[D];浙江大學(xué);2012年

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本文編號：1919767