摘要
介绍了广播电视频段白频谱技术的研究与发展,调研了美国联邦通信委员会(Federal Communications Commission,FCC)和英国通信办公室(Ofcom)对白频谱技术提出的规范和要求,以及基于白频谱技术的通信协议和标准。同时对认知无线电关键模块进行了探究和仿真。最后结合白频谱的要求,对数字电视上行系统进行链路预算与仿真,根据仿真结果,重新设计了超窄带方案的数字电视上行系统帧结构,并通过资源分配仿真验证了所设计的帧结构具有更大的优势。
＂White space＂ technology of cognitive radio, which is not used in the broadcast and television spectrum is analyzed. The rules of white space which are formulated by FCC and Ofeom Committee and standards such as IEEE802.22 and IEEE802.11af are also studied. Through the needs in physical level of these standards, ＂dynamic spectrum allocation＂ and ＂power allocation＂ which are particularly important are focused on. After researching the physical model, the original uplink system is simulated to determine whether suits for system of television, new frame structure which is suitable to guarantee its advantage. white space. Combining with the result of link budget of uplink for white space is designed and some simulation works are done
出处
《电视技术》
北大核心
2014年第24期34-38,共5页
Video Engineering
基金
国家自然科学基金项目(61221001
61102051
61420106008)
111引智计划项目(B07022)
国家高技术研究发展计划项目(2012AA011701
2013AA013503)
上海市数字媒体处理与传输重点实验室
上海交通大学科技创新基金(AF0300021)
关键词
白频谱技术
认知无线电
频谱管理
数字电视
white space
cognitive radio
spectrum management
digital television
