本文選題：5G + 非正交多址��； 參考：《北京交通大學(xué)》2017年碩士論文

【摘要】：為了支撐移動(dòng)互聯(lián)網(wǎng)以及物聯(lián)網(wǎng)的未來發(fā)展,面向2020年及未來的第五代移動(dòng)通信(Fifth Generation,5G),將逐漸成為用于人與人之間通信以及人與物之間通信中無線網(wǎng)絡(luò)接入的首要渠道。這就意味著未來的5G無線通信網(wǎng)絡(luò)將滿足多樣化入網(wǎng)設(shè)備的無線連接需求,以及其各項(xiàng)業(yè)務(wù)特征的匹配,如極速無線寬帶接入、超大系統(tǒng)容量、超高峰值速率、超低端到端延遲、超低功率消耗、"海"量設(shè)備連接、"海"量應(yīng)用場景支持以及超高可靠性等等。然而現(xiàn)有4G通信中針對寬帶設(shè)計(jì)的正交多址技術(shù)(Orthogonal Frequency Division Multiple Access,OFDMA)已經(jīng)不再適用,特別是對于5G大規(guī)模機(jī)器式通信(massive Machine Type Communication,mMTC)場景來說,這種零星過載系統(tǒng)傳輸?shù)亩际且恍┬?shù)據(jù)包,繼續(xù)沿用正交多址接入(Orthogonal Multiple Access,OMA)勢必會(huì)造成資源的浪費(fèi)以及過度的調(diào)度開銷。因此為了避免空口資源的浪費(fèi),就需要研究新型的非正交多址技術(shù)來提高小數(shù)據(jù)包傳輸?shù)目湛谛�。本文對現(xiàn)有5G新型非正交多址技術(shù)的原理以及接收機(jī)算法進(jìn)行了調(diào)研評估,提出了新的非正交多址方案和相應(yīng)接收機(jī)算法,同時(shí)搭建鏈路級(jí)仿真平臺(tái)進(jìn)行一系列性能評估,具體內(nèi)容如下:1.針對新提出的非正交多址技術(shù),如低密度簽名多址(Low Density Signature,LDS)、稀疏碼多址(Sparse Code Multiple Access,SCMA)、圖樣分割多址(Pattern Division Multiple Access,PDMA)、多用戶共享多址(Multi-user Shared Access,MUSA)、基于功率域的非正交多址(Non-orthogonal Multiple Access,NOMA)、資源擴(kuò)頻多址(Resource Spread Multiple Access,RSMA)等多址方案進(jìn)行調(diào)研,并對主流的消息傳遞算法(Message Passing Algorithm,MPA)、最小均方誤差(Minimum Mean Square Error,MMSE)及串行干擾消除(Successive Interference Cancellation,SIC)等接收機(jī)算法進(jìn)行深入分析研究;2.基于Zadoff-Chu擴(kuò)頻序列的研究,提出新的非正交編碼多址接入(Non-orthogonal coded access,NOCA)方案,并且根據(jù)現(xiàn)有非正交多址的接收機(jī)方案,設(shè)計(jì)適用于NOCA方案的基于迭代干擾消除的聯(lián)合最小均方誤差(Minimum Mean Square Error with Interference Cancellation,MMSE+IC)接收檢測算法;3.基于LTE(Long Term Evolution)平臺(tái)搭建鏈路級(jí)仿真,對NTT DoCoMo公司提出的NOMA以及華為提出LDS\SCMA技術(shù)進(jìn)行性能評估,同時(shí)以O(shè)FDMA和SCMA性能作為參考,對新方案NOCA進(jìn)行了性能評估及理論分析;4.考慮mMTC上行異步接入場景,針對NOCA提出新的抗異步干擾的接收檢測改進(jìn)算法,同時(shí)基于成熟的鏈路平臺(tái),分別對SCMA和NOCA這兩種非正交多址的抗異步性能進(jìn)行比較分析;5.考慮實(shí)際基站和用戶終端的硬件實(shí)現(xiàn)的約束條件,本文對現(xiàn)有的5G非正交多址方案用到的接收機(jī)進(jìn)行了詳細(xì)地接收機(jī)分類和計(jì)算復(fù)雜度分析。
[Abstract]:In order to support the future development of the mobile Internet and the Internet of things, the fifth generation mobile communication facing 2020 and the future will gradually become the primary channel for wireless network access in the communication between people and objects. This means that the future 5G wireless communication network will meet the wireless connection requirements of a variety of access devices and the matching of its various service features, such as extremely fast wireless broadband access, super-large system capacity, ultra-high peak rate, Ultra-low-end-to-end delay, ultra-low power consumption, "sea" equipment connection, "sea" volume application scenario support and ultra-high reliability, and so on. However, orthogonal Frequency Division Multiple access OFDMA (OFDMA) for broadband design in 4G communication is no longer applicable, especially for 5G large-scale machine communication systems with massive Machine Type communication. The continuation of orthogonal Multiple OMA (orthogonal Multiple access OMA) is bound to lead to waste of resources and excessive scheduling overhead. Therefore, in order to avoid the waste of empty port resources, it is necessary to study a new non-orthogonal multiple access technology to improve the efficiency of small packet transmission. In this paper, the principles and receiver algorithms of 5G new non-orthogonal multiple access technology are investigated and evaluated. A new non-orthogonal multiple access scheme and corresponding receiver algorithm are proposed, and a series of performance evaluation is carried out by building a link level simulation platform. The details are as follows: 1. For the newly proposed non-orthogonal multiple access technology, For example, low Density Density signature LDSs, sparse Code multiple access (Sparse Code Multiple access), pattern split multiple access Division Multiple access (PDMAA), Multi-user Shared access MUSA, Non-orthogonal multiple access Multiple (NOMAA) based on power domain, Resource Spread Multiple access (RSMAA), etc., are used to investigate the multiple access schemes, such as low density signature multiple access, sparse code multiple access, pattern partition multiple access Division Multiple, multi-user sharing multi-user Shared access MUSA, non-orthogonal multiple access Multiple based on power domain, resource spread multiple access, Resource Spread Multiple access, and so on. The main algorithms of message Passing algorithm, minimum mean square error (MMSE) and serial interference cancellation (sic) are analyzed and studied in detail. Based on the research of Zadoff-Chu spread spectrum sequence, a new non-orthogonal coded multiple access coded access (NOCA) scheme is proposed, which is based on the existing non-orthogonal multiple access receiver schemes. A joint minimum mean square error (MMSE) receiver detection algorithm based on iterative interference cancellation is designed for NOCA scheme. Based on the LTE(Long Term Evolution platform, the link-level simulation is built to evaluate the performance of NOMA proposed by NTT DoCoMo Company and LDS\ SCMA technology proposed by Huawei. At the same time, the performance evaluation and theoretical analysis of the new scheme NOCA are carried out based on the performance of OFDMA and SCMA. Considering the mMTC uplink asynchronous access scenario, a new anti-asynchronous interference receiving detection improved algorithm is proposed for NOCA. Based on the mature link platform, the anti-asynchronous performance of SCMA and NOCA are compared and analyzed respectively. Considering the constraints of the hardware implementation of real base stations and user terminals, this paper makes a detailed classification and computational complexity analysis of the receivers used in the existing 5G non-orthogonal multiple access schemes.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN929.5

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 TAO Yunzheng;LIU Long;LIU Shang;ZHANG Zhi;;A Survey: Several Technologies of Non-Orthogonal Transmission for 5G[J];中國通信;2015年10期

2 袁弋非;朱龍明;;5G應(yīng)用場景與可能的技術(shù)(英文)[J];中國通信;2014年11期

，

本文編號(hào)：1912227