Joint Power Control and Scheduling for Two-Cell Energy Efficient Broadcasting with Network Coding

We consider the energy minimization problem for a two-cell broadcasting system, where the focus is devising energy efficient joint power control and scheduling algorithms. To improve the retransmission efficiency, linear network coding is applied to broadcast packets. Combined with network coding, an optimal algorithm is proposed, which is based on dynamic programming. To reduce computational complexity, two sub-optimal algorithms are also proposed for large networks. Simulation results show that the proposed schemes can reduce energy consumption up to 57% compared with the traditional Automatic Repeat-reQuest (ARQ).

Advanced Digital Techniques and Tendencies in the Development of Modem Digital Satellite Broadcasting

The fundamental aspects of digital broadcasting are its service flexibility and power savings, which make all-digital satellite broadcasting a viable and economic propositon compared with analog broadcasting. Tendencies in the development of digital television broadcasting are: (1) Stereophonic or two-language sound transmission with television in existing analog TV system, (2) Digital direct satellite broadcasting (D-DBS); (3)Digital high definition television (HDTV) Broadcasting.

Empirical Study on Emergency Broadcasting： Based on the US, UK and Japan’s Experience

Construction and use of national emergency broadcast system, related to the safety of lives and property. Broadcasting system has the simple construction, easy to set up, transmission distance, wide transmission range, transmission speed, etc., in the notice of emergency incidents, emergency command, emergency evacuation and emergency settle played a pivotal role. In the recent years, countries earthquakes, tsunamis and other natural disasters occur frequently, causing great loss of life and property, the establishment of the emergency broadcast system, more and more government attention. We introduced the emergency broadcast system in Japan, the United States, Britain and other countries, analyzes the problems our country to carry out emergency broadcast services need to pay attention, and made recommendations.

High Robust Broadcasting over DTMB-A with Low-rate LDPC Codes

As the 2nd generation digital terrestrial television broadcasting(DTTB)standard,digital terrestrial/television multimedia broadcasting-advanced(DTMB-A)can provide higher spectrum efficiency and transmission reliability by adopting flexible frame structure and advanced forward error correction coding compared with the 1 st generation DTTB systems.In order to increase the flexibility and robustness of the DTTB network,the frequency reuse scheme of factor one(reuse-1)is proposed,where the same RF channel is used by different stations covering the adjacent service areas.However,it demands a very low carrier-tonoise ratio(C/N)threshold below 0 dB at the DTTB physical layer.In this paper,a robust broadcasting technique is proposed based on DTMB-A with newly designed low-rate low density parity check(LDPC)codes.By adopting quasi-cyclic(QC)Raptor-like structure and progressive lifting method,the high performance low-rate LDPC codes are designed supporting multiple code lengths.Both density-evolution analyses and laboratory measurements demonstrate that DTMB-A with low-rate coding can complete the demodulation reliably with the C/N threshold below0 d B,which is one important necessary condition to support frequency reuse-1 scheme.

Pakistan Electronic Media Legal and Regulatory System

In this paper, the legal and regulatory system of Pakistan media TV will be examined. In the digital era, electronic TV media has become one of Pakistan＇s fastest growing service industries, but there is still a need for considerable improvement with regard to the laws and regulations governing the activity. It defines the Pakistan electronic regulatory process and the relevant media laws. After that, it discusses enforcement mechanism operating in Pakistan, Lastly, it suggests some recommendations.

Research on the Development Direction of Traditional Broadcast Television Movie Media under Background of New Media and Internet

In this paper, we conduct research on the development direction of traditional broadcast television movie media under background of new media and lnternet. In recent years, with the computer technology network communication technology and constant innovation rapid development of digital technology, digital new media got rapid development. Under the digital new media industry has gradually become the core industry of 21 st century knowledge economy and the new economic growth point. But there are still some problems in the digital of new media development. How to treat these problems to take effective countermeasures is vital to healthy development of the new media. Our research proposes corresponding guidance and the perspective on the development orientation which acts as the paradigm and the guideline.

人工智能技术在广播电视行业的应用研究

在智能媒介的浪潮中,广播电视行业正在经历一场前所未有的变革。人工智能、通信、物联网等尖端技术的融合,为广播电视行业注入新的活力。概述人工智能技术的概念,分析人工智能技术在广播电视行业中应用的技术优势,从内容生产、视听服务、数智应用、安全发展4个方面进行应用分析,提出人工智能在广播电视行业的发展方向。

基于单片机的公共交通自动到站播报系统设计

由于科技的发展,城市规模逐渐扩大,人们的生活水平和生活速度加快,智能交通的运用效果显得极其重要。手动到站播报对公共交通驾驶员而言显得格外繁琐,为解决这些问题,本系统设计了一种公共交通自动到站播报系统,系统以STM32F103C8T6单片机为主控芯片,使用RFID模块对信号进行收发,温湿度信息的采集使用传感器DHT11模块,站点消息的语音播放使用JQ8400语音模块,站点和温湿度信息的显示则使用OLED液晶显示屏,最终模拟实现公共交通工具自动到站播报。本系统不仅能够提高公共交通在日常生活中的利用效率,还规范了公共交通使用方式,减少了安全隐患和驾驶员的工作强度。

Android手机远程控制关键技术分析

Android手机上存在的恶意程序,主要窃取用户隐私信息,有些甚至具备远程控制的能力。在分析Android平台架构与安全机制的基础上,总结其广播通信关键技术。并采用实例方法,归纳Android平台上的远程控制基本过程。重点分析控制指令短信格式,读取与执行、以及短信指令的隐藏等远程控制关键技术。

Positioning models and systems based on digital television broadcasting signals

The requirement and feasibility of the positioning system using digital television(DTV)broadcasting signals are analyzed.The principle of DTV positioning on the basis of frame synchronization is brought forward and the ranging characteristic is studied that the observables are asynchronously measured during the same epoch interval.The models of the pseudo-range observation and Doppler carrier phase integral are researched.The system observation and state equations are presented on the basis of the above models.The simulation results showed that DTV positioning technology could remarkably improve the precision of system state estimates using smoothing methods for positioning systems or integrated navigation systems.The DTV positioning that has a sub-meter level ranging error and meter level positioning accuracy can parallel with and even taken as a beneficial substitute for the tradition positioning technology.

无线广播电视传输覆盖维护措施分析

信息化时代下,广播电视行业在发展期间正面临着严峻的新的机遇和考验。为保证无线广播电视传输覆盖工程运行的稳定性与安全性,有必要对其维护措施进行深入研究。基于此,该文在了解无线广播电视传输覆盖技术概念与类型的基础上,对技术应用思路进行探究,以此为基础提出对应的维护和检修措施。也希望能为各广播电视发射台和转播站提供一定参考。

信息化背景下的广播电视监测工作

广播电视监测结合物联网、云计算、大数据分析和人工智能等现代技术手段,能够确保高质量信号传输与接收,有效提升监测的准确性和效率。通过分析唐山地面数字电视信号监测项目,详细阐述信息化技术在广播电视监测工作中的关键作用和应用价值,为广播电视行业提供借鉴与参考,推动广播电视监测工作发展,为用户带来更优质的视听体验。

5G与广播电视工程的融合应用

5G对广播电视事业的发展具有重要的推动作用,可以实现广播电视的高清晰、高效率、高互动、高融合的发展。介绍了5G的概念、技术和发展现状,分析5G在广播电视工程中的应用,包括超高清传输、新型服务和优化资源分配等,阐述这些应用的特点和优势,展示5G对广播电视事业的赋能和推动作用,为广播电视的创新和转型提供参考。

互联网时代下广播电视传输覆盖技术研究

随着互联网的崛起,广播电视行业的覆盖范围逐渐扩大,观众互动性增强,内容分发更加多样化。然而,互联网也带来了技术、版权和监管、市场竞争等方面的挑战。探讨了互联网时代下广播电视传输覆盖的实现方式,并深入分析了关键因素,以提升传输效率、确保内容安全,同时更精准地满足观众的需求。

公共空间电子屏安全播控模式探索

公共空间电子屏正成为城市舆论宣传的重要手段,已广泛应用于多个领域,呈现主体多元化、终端网联化、技术创新化的趋势,催生了公共空间电子屏对联播联控业态的需求。通过对平台系统、传输网络、固件应用等实施对应安全策略,共同构建安全防线,确保联网联播的可管可控。同时管理部门应从多个维度建立配套机制,共同维护公共空间的意识形态安全和播出秩序。

智能语音识别技术在广播电视内容监测中的应用

随着科技的进步,智能语音识别技术在广播电视领域的应用日趋广泛。结合智能语音识别技术的工作原理,阐述其在广播电视内容监测中的应用优势和应用范围,具体体现在广播电视内容识别、广告监测和节目质量评估等方面,并指出应用过程所面临的挑战,为智能语音识别技术在广播电视内容监测领域的应用提供重要的参考和借鉴价值。

数字音频压缩在广播电视传输中的效能分析

通过对比分析脉冲编码调制(Pulse Code Modulation,PCM)音频文件和使用HE-AAC压缩后的音频文件,结果显示HE-AAC压缩技术在数据量减少、兼容性提升以及网络延迟降低等方面均表现出显著的优势。HE-AAC压缩技术在广播电视传输中具有较好的应用前景,能够提高传输效率,为观众提供更丰富的音频选择。

广播电视发射台站音视频信号监测系统功能的设计与实现

广播电视发射台站音视频信号监测系统是保证广播电视信号稳定传输的关键技术之一。首先分析广播电视发射台站音视频信号监测系统的功能,其次分析主要模块的设计与实现策略,旨在进一步提高广播电视发射台站音视频信号的监测能力。

数字时代广播电视无线发射技术的创新与发展

广播电视行业正经历前所未有的变革,无线发射技术作为广播电视传输的关键环节,其创新与发展尤为重要。探索数字时代广播电视无线发射技术的创新路径,成为行业发展的迫切需求。基于此,首先分析数字时代广播电视无线发射技术的演变历程,其次探讨数字时代广播电视无线发射技术的现状与挑战,最后分析数字时代广播电视无线发射技术的优化路径。

广播电视信号传输系统的维护和管理

随着技术的发展,广播电视信号传输系统已成为现代社会信息传播的重要工具。对其进行有效的维护和管理,有助于保障传输稳定性,提升观众体验,预防潜在风险,降低运营成本。当前,广播电视信号传输系统的维护和管理面临着设备老化、维护人员技能更新不足、维护流程不标准化等问题。针对这些问题,文章提出一系列优化策略,以期提高广播电视信号传输系统的稳定性和维护效率。