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通过分析8PSK 调制方式的载波恢复、定时恢复算法, 提出了一种适用于新一代数字卫星电视标准DVB S2
的全数字解调算法, 改进了相位频率检测( PFD) 算法以适合于8PSK 解调. 载波恢复采用频率检测( FD) 和相位频率
检测相结合的结构, 跟踪范围超过1 倍符号率. 采用Gardner TED 算法进行定时恢复.-By analyzing the 8PSK modulation carrier recovery, timing recovery algori
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数字电视地面广播传输系统帧结构、
信道编码和调制-Digital television terrestrial broadcasting transmission system frame structure, channel coding and modulation
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Digital Video Broadcasting over Handheld devices
(DVB-H) is based on the DVB-T specification for digital
terrestrial television, adding to it number of features designed to
take account of the particular environments in which such
receivers m
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Multicarrier modulation helps to reduce the detrimental effects of multipath fading. Because of its
robustness to multipath, and the ease of implementating it in transmitters and receivers using the
fast Fourier transform (FFT), the MCM concept i
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Multicarrier modulation helps to reduce the detrimental effects of multipath fading. Because of its
robustness to multipath, and the ease of implementating it in transmitters and receivers using the
fast Fourier transform (FFT), the MCM concept i
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介绍了一种可在较短时间内检测到数字电视国标系统工作模式的方法。该方法利用帧头PN序列和PN序列扩展保护部
分的相关特性、循环特性以及0FDM信号部分的周期特性进行判决,可达到很好的检测效果,该方法同时可加入跟踪模块对系统
工作模式的突然改变作出反应。还介绍了两种可以在硬件资源和性能上进行折中的检测方法-Describes a method can be detected in a relatively short period of time to a digital televis
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Abstract
Orthogonal frequency division multiplexing (OFDM) is becoming the chosen
modulation technique for wireless communications. OFDM can provide large data
rates with sufficient robustness to radio channel impairments. Many research centers
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这是研究欧洲DVB-T标准的一套合集,主要介绍了DVB-T单频网的同步技术,以及系统设计和实现。其中对DVB-T单频网进行了详细的讲解,对研究我国的数字电视广播技术也有很好的借鉴作用。-This is the study of the European DVB-T standard a collection, mainly introduces the synchronization technology of DVB-T single frequency network, and the sy
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NICAM就是双声道数字声技术,其应用范围及其广泛,最典型的应用便是电视广播附加双声道数字声技术,利用它进行立体声或双语广播,以充分利用电视频道的频谱资源。-NICAM728-digital two channel sound for terrestrial television
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The most common wireless technologies use radio. With radio waves distances can be short, such as a few meters for television or as far as thousands or even millions of kilometers for deep-space radio communications. It encompasses various types of f
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TSC Digital Television Standard, Part 1 –
Digital Television System
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This paper proposes a novel, highly effective spectrum
sensing algorithm for cognitive radio and white space
applications. The proposed spectral covariance sensing (SCS)
algorithm exploits the different statistical correlations of the received
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The earliest SNG equipment used analoge modulation, similar to conventional television and radio. The technology first demonstrated its capability during the war between England and Argentina over the Falkland Islands in 1982. Analog SNG was used ext
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