DVB_C数字解调与信道解码技术的研究

【作者】 王锦毅；

【导师】 苏凯雄；

【作者基本信息】 福州大学 ， 通信与信息系统， 2001， 硕士

【摘要】 有线电视网的特点是频带宽、信道容量大、传输率高、传输质量好，而成为多媒体综合信息网的极好通道。它与其它相关技术的结合，可以实现其它新型业务，比如在HFC网中实现视频点播(VOD)业务、远程教学、远程医疗等。因此欧洲电信组织极力向全世界普及电缆数字视频广播系统(DVB-C)标准。 本项研究按照接收DVB－C数字电缆电视的要求，开展对其中的数字解调和信道解码部分的研究工作。通过对国际先进的结构体系和技术的比较论证确定方案，利用超大规模可编程集成电路实现该系统。系统研究内容包括前置宽带放大器、下变频器、中频数字解调器、载波与时钟恢复、RS解码、去交织去扰以及微处理系统等的硬件和软件设计。更多还原

【Abstract】 The distinguishing feature of CATV is Broad Channel. Large Capacity and ExcellentTransmission QualityIt has become best routeway of Multimedia Synthetic InformationNetwork.Combined with other correlative techniques,it can achieve new operations,forexaInPle,VOD in HFC network.long-distance teching and long-distance medical treaAnent.Asa result Europe Tele Organizing is trying its best to recommend the DVB-C standard in theworld.Based on the demand of receiving digital cable television signal, the digital demodulatingand charmel decoding which is the part of the DVB-C receiving system is performed in thispaPer. We choose the prOject after comparing and demonstrating advanced structures andtechniques in the wor1d, and by using the programmable VLSI, channel decoding anddemodulating is achieved. The work on this system includes the hardware and softwaredesign of the front wde-band amplifier, zero-IF digital demodulator, controllable SAWbase-band filter, carrier and clock recovery, convolution decoder, RS decoder, de-interleave,de-random and microprocessor control system.更多还原