The VITA 49 Analog RF-Digital Interface
The VITA 49 Analog RF-Digital Interface
复制标题
VITA 49 模拟射频数字接口
DOI：
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发表时间：
2012
影响因子：
6.9
通讯作者：
D. Clendenen
中科院分区：
文献类型：
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作者：
T. Cooklev;R. Normoyle;D. Clendenen
在过去的几年中，无线电的数字和模拟RF子系统之间的接口（模拟RF-数字接口）变得越来越重要。本文首先讨论此接口存在的不同技术备选方案及其背后的原理。认知无线电技术的出现被认为是增加模拟RF-数字接口的重要性的趋势。然后详细讨论了VME总线国际贸易协会（VIta）49标准。VIta 49是用于传送与无线电接收器内的不同参考点有关的数字化信号数据和元数据（或上下文数据）的基于分组的协议。元数据包括模拟前端参数，例如RF中心频率、带宽、IF中心频率、采样率、增益、位置等。该标准允许描述、存储和传输关于无线电在其天线处看到的频谱的所有信息。VIta 49被认为是一种分层无线电描述语言，是无线电架构的新范例。
Over the last several years, the interface between the digital and analog RF subsystems of a radio (the analog RF-digital interface) has become increasingly important. this article first discusses the different technology alternatives that exist for this interface and the rationale behind them. the emergence of cognitive radio technology is identified as a trend that increases the importance of the analog RF-digital interface. then the article discusses in detail the VmE bus International trade association (VIta) 49 standard. VIta 49 is a packet-based protocol to convey digitized signal data and metadata (or context data) pertaining to different reference points within a radio receiver. the metadata includes analog front-end parameters such as RF center frequency, bandwidth, If center frequency, sampling rate, gain, location, etc. this standard allows all information about the spectrum as seen by a radio at its antenna to be described, stored, and transported to other systems. VIta 49 is identified as a hierarchical radio description language that is a new paradigm for radio architectures.