下一代无线广播资源分配的研究

发布时间：2018-01-05 05:00

本文关键词：下一代无线广播资源分配的研究　出处：《郑州大学》2016年硕士论文　论文类型：学位论文

【摘要】：下一代无线广播(NGB-W)系统中,根据不同无线广播系统在容量、时延等性能方面的不同需求,灵活配置不同类型数字多媒体无线广播帧的粒度以及重复频度。考虑到不同类型的数字多媒体无线广播有不同的需求要求,设计支持单载频和多载频的传输方案。为了获得频率分集增益和统计复用增益,同时提高广播信号的传输可靠性,无线广播系统承载的数据支持跳频传输模式,设计方案需要考虑广播跳频间隔问题。数字多媒体无线广播系统在频谱资源分配过程中,从信令开销的角度,在帧配置方案设计中设置了最小帧长,要求每个数字多媒体无线广播在一个传输载频上分配的资源块或者帧配置的物理帧长度不能小于广播自身设置的最小帧长,否则无法承载广播频道信息。数字多媒体无线广播在多载频传输时至少包含主载频,主载频用来初始扫描换台,所以包含广播的所有物理帧类型。设计广播在主载频上的帧配置的超帧结构,广播在主载频上的帧配置必须满足此结构。设计广播在辅载频上的资源分配引入修正的行家算法对广播资源分配不安全的结果进行调整。同时,针对广播资源分配的结果在辅载频上的传输顺序,也设计了新的方案。本文主要研究NGB-W系统中多种数字多媒体无线广播的资源分配和传输问题,针对广播各种参数配置设计方案,并将方案实现。论文的主要研究内容及创新成果如下:(1)NGB-W系统中主载频上的NGB-W物理帧帧配置方案,详细介绍数字多媒体无线广播在主载频上的NGB-W物理帧满足超帧结构的帧配置过程;(2)辅载频上数字多媒体无线广播的资源分配模型和传输方案建模过程。介绍模型的建立,介绍银行家算法,多载频资源分配问题如何应用银行家算法。考虑广播时间交叠问题,设计广播资源在辅载频上传输方案的过程。详细说明辅载频上数字多媒体无线广播的资源分配和资源传输方案的实现过程。
[Abstract]:In the next generation wireless broadcasting (NGB-W) system, according to the different wireless broadcast system in capacity, delay and other performance requirements. Flexible configuration of different types of digital multimedia radio broadcast frame granularity and repetition frequency. Considering that different types of digital multimedia radio broadcasting has different requirements. In order to obtain the frequency diversity gain and statistical multiplexing gain and improve the transmission reliability of broadcast signal, the data carried by the wireless broadcast system supports the frequency hopping mode. In the process of spectrum resource allocation, the minimum frame length is set in the design of frame configuration scheme from the perspective of signaling overhead. Each digital multimedia radio broadcast is required to allocate the resource block or the physical frame length of the frame configuration on a transmission carrier frequency not less than the minimum frame length set by the broadcast itself. Otherwise, the broadcast channel information cannot be carried. Digital multimedia radio broadcasting contains at least the main carrier frequency when the multi-carrier frequency is transmitted, and the main carrier frequency is used to initially scan the replacement station. Therefore, it contains all the physical frame types of the broadcast. The superframe structure of the frame configuration of the broadcast on the main carrier frequency is designed. The frame configuration of broadcast on the main carrier frequency must meet this structure. The design of broadcast resource allocation on the auxiliary carrier frequency introduces a modified connoisseur algorithm to adjust the result of unsafe broadcast resource allocation. At the same time. According to the transmission sequence of broadcast resource allocation in auxiliary frequency, a new scheme is designed. This paper mainly studies the resource allocation and transmission of various digital multimedia radio broadcasting in NGB-W system. The main research contents and innovative results of this paper are as follows: 1. The NGB-W physical frame configuration scheme on the main carrier frequency in the 1: 1 NGB-W system. The frame configuration process of NGB-W physical frame on the main carrier frequency of digital multimedia radio broadcasting is introduced in detail. 2) Resource allocation model and transmission scheme modeling process of digital multimedia radio broadcast on auxiliary carrier frequency. The establishment of the model and the banker's algorithm are introduced. How to apply the Banker algorithm to the Multi-Carrier Frequency Resource allocation problem. The process of transmission scheme of broadcast resource on auxiliary carrier frequency is designed, and the resource allocation of digital multimedia radio broadcast on auxiliary carrier frequency and the realization process of resource transmission scheme are described in detail.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN934

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