k用戶MIMO-Y雙向中繼信道信號(hào)傳輸算法研究
發(fā)布時(shí)間：2018-11-04 21:49
【摘要】：近年來(lái),物理層網(wǎng)絡(luò)編碼技術(shù)(physical-layer network coding, PNC)和多輸入多輸出(MIMO)技術(shù)由于其良好的性能受到了學(xué)者的廣泛關(guān)注。物理層網(wǎng)絡(luò)編碼技術(shù)是將有線網(wǎng)絡(luò)中的網(wǎng)絡(luò)編碼思想應(yīng)用到無(wú)線網(wǎng)絡(luò)中,這種思想是使傳統(tǒng)無(wú)線網(wǎng)絡(luò)中只負(fù)責(zé)轉(zhuǎn)發(fā)數(shù)據(jù)的中繼節(jié)點(diǎn)具備對(duì)接收到的數(shù)據(jù)包進(jìn)行組合、編碼等智能化處理,在一定程度上解決了無(wú)線網(wǎng)絡(luò)中節(jié)點(diǎn)間的相互干擾問(wèn)題,能大大提高網(wǎng)絡(luò)的吞吐量和節(jié)約無(wú)線頻率資源,同時(shí)增強(qiáng)了信息的安全性。多輸入多輸出(MIMO)技術(shù)結(jié)合了傳統(tǒng)的空間分集技術(shù)和空間復(fù)用技術(shù)的優(yōu)點(diǎn),利用多根發(fā)射天線和多根接收天線所提供的空間自由度,可以在不需要增加帶寬或總功率損耗的情況下有效提高無(wú)線通信系統(tǒng)的頻譜效率,提升數(shù)據(jù)傳輸速率。k用戶MIMO-Y信道由k個(gè)用戶和一個(gè)中繼組成,每個(gè)用戶裝備Nt根天線,中繼裝備Nr根天線,用戶兩兩之間通過(guò)中繼節(jié)點(diǎn)實(shí)現(xiàn)信息的交換,每個(gè)用戶在向其他所有用戶發(fā)送信息的同時(shí),也接收其他所有用戶的信息,整個(gè)過(guò)程耗費(fèi)兩個(gè)時(shí)隙,分別稱為多址接入(multi access channels,MAC)階段和(broadcast channels,BC)階段。本文研究了采用物理層網(wǎng)絡(luò)編碼技術(shù)在k用戶MIMO-Y信道中實(shí)現(xiàn)用戶間信息交換的信號(hào)傳輸算法,針對(duì)已有的SSA-INB方案的矛盾問(wèn)題,主要研究并提出了在MAC階段和BC階段均采用信號(hào)空間對(duì)齊(signal space alignment, SSA)算法的SSA-SSA方案以及在MAC階段和BC階段均采用廣義信號(hào)對(duì)齊(general signal alignment, GSA)算法的GSA-GSA方案。前者實(shí)現(xiàn)的基本條件為Nr2Nt,而后者實(shí)現(xiàn)的基本條件為Nr(k-2)Nt,二者在一定程度上可以看做相互補(bǔ)充。本文對(duì)SSA-SSA方案和GSA-GSA方案的實(shí)現(xiàn)算法進(jìn)行了詳細(xì)介紹,并對(duì)其系統(tǒng)和速率和復(fù)雜度進(jìn)行了理論分析,最后對(duì)信噪比在0到50dB的變化范圍內(nèi)的GSA-GSA方案和SSA-SSA方案的系統(tǒng)和速率進(jìn)行了仿真分析,并與已有的SSA-INB方案進(jìn)行了對(duì)比。仿真分析表明在相同信噪比以及相同系統(tǒng)自由度的條件下,GSA-GSA方案和SSA-SSA方案的性能優(yōu)于SSA-INB方案,GSA-GSA方案性能優(yōu)于SSA-SSA方案。
[Abstract]:In recent years, physical layer network coding (physical-layer network coding, PNC) and multiple input / multiple output (MIMO) techniques have attracted wide attention due to their good performance. The physical layer network coding technology is to apply the network coding idea in wired network to wireless network. This idea is to make the relay node which is only responsible for forwarding data have the ability to combine the received data packet in the traditional wireless network. Intelligent processing, such as coding, solves the problem of interference between nodes in wireless network to a certain extent, can greatly improve the throughput of the network and save the wireless frequency resources, at the same time, enhance the security of information. Multi-input multiple-output (MIMO) technology combines the advantages of traditional spatial diversity and spatial multiplexing, and makes use of the spatial degrees of freedom provided by multiple transmit antennas and multiple receiving antennas. Without increasing bandwidth or total power loss, the spectrum efficiency and data transmission rate of wireless communication system can be improved effectively. K user MIMO-Y channel is composed of k users and a relay. Each user is equipped with a Nt root antenna. The relay is equipped with Nr root antenna, and the information is exchanged between two users through the relay node. Each user not only sends the information to all other users, but also receives the information of all other users. The whole process consumes two time slots. It is called multiple access (multi access channels,MAC) stage and (broadcast channels,BC) stage respectively. In this paper, we study the signal transmission algorithm to realize the information exchange between users in k user MIMO-Y channel by using physical layer network coding technology, aiming at the contradiction of existing SSA-INB scheme. This paper mainly studies and proposes a SSA-SSA scheme in which the signal space alignment (signal space alignment, SSA) algorithm is used in both MAC and BC stages and a GSA-GSA scheme in which the generalized signal alignment (general signal alignment, GSA) algorithm is used in both MAC and BC phases. The basic condition of the former is Nr2Nt, and the latter is that Nr (k-2) Nt, can be regarded as complementary to each other to some extent. In this paper, the implementation algorithms of SSA-SSA scheme and GSA-GSA scheme are introduced in detail, and its system, rate and complexity are analyzed theoretically. Finally, the system and rate of GSA-GSA scheme and SSA-SSA scheme in the range of 0 to 50dB are simulated and analyzed, and compared with the existing SSA-INB scheme. Simulation results show that the performance of GSA-GSA scheme and SSA-SSA scheme is better than that of SSA-INB scheme, and that of GSA-GSA scheme is better than that of SSA-SSA scheme under the same SNR and the same system degree of freedom.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN919.3
本文編號(hào)：2311240
[Abstract]:In recent years, physical layer network coding (physical-layer network coding, PNC) and multiple input / multiple output (MIMO) techniques have attracted wide attention due to their good performance. The physical layer network coding technology is to apply the network coding idea in wired network to wireless network. This idea is to make the relay node which is only responsible for forwarding data have the ability to combine the received data packet in the traditional wireless network. Intelligent processing, such as coding, solves the problem of interference between nodes in wireless network to a certain extent, can greatly improve the throughput of the network and save the wireless frequency resources, at the same time, enhance the security of information. Multi-input multiple-output (MIMO) technology combines the advantages of traditional spatial diversity and spatial multiplexing, and makes use of the spatial degrees of freedom provided by multiple transmit antennas and multiple receiving antennas. Without increasing bandwidth or total power loss, the spectrum efficiency and data transmission rate of wireless communication system can be improved effectively. K user MIMO-Y channel is composed of k users and a relay. Each user is equipped with a Nt root antenna. The relay is equipped with Nr root antenna, and the information is exchanged between two users through the relay node. Each user not only sends the information to all other users, but also receives the information of all other users. The whole process consumes two time slots. It is called multiple access (multi access channels,MAC) stage and (broadcast channels,BC) stage respectively. In this paper, we study the signal transmission algorithm to realize the information exchange between users in k user MIMO-Y channel by using physical layer network coding technology, aiming at the contradiction of existing SSA-INB scheme. This paper mainly studies and proposes a SSA-SSA scheme in which the signal space alignment (signal space alignment, SSA) algorithm is used in both MAC and BC stages and a GSA-GSA scheme in which the generalized signal alignment (general signal alignment, GSA) algorithm is used in both MAC and BC phases. The basic condition of the former is Nr2Nt, and the latter is that Nr (k-2) Nt, can be regarded as complementary to each other to some extent. In this paper, the implementation algorithms of SSA-SSA scheme and GSA-GSA scheme are introduced in detail, and its system, rate and complexity are analyzed theoretically. Finally, the system and rate of GSA-GSA scheme and SSA-SSA scheme in the range of 0 to 50dB are simulated and analyzed, and compared with the existing SSA-INB scheme. Simulation results show that the performance of GSA-GSA scheme and SSA-SSA scheme is better than that of SSA-INB scheme, and that of GSA-GSA scheme is better than that of SSA-SSA scheme under the same SNR and the same system degree of freedom.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN919.3
【相似文獻(xiàn)】
相關(guān)碩士學(xué)位論文 前1條
1 王濤;k用戶MIMO-Y雙向中繼信道信號(hào)傳輸算法研究[D];西安電子科技大學(xué);2014年
，本文編號(hào)：2311240
本文鏈接：http://sikaile.net/kejilunwen/wltx/2311240.html
最近更新
教材專著
