張 瓅， 秦開宇
（電子科技大學，四川 成都 610054）
摘 要：實時頻譜分析儀可以對通信信號進行實時測試，符合現代通信分析儀的發展趨勢。CCDF測量是實時頻譜分析儀的關鍵技術之一，對于測量多載波信號非常有用。它普遍應用在2G和3G無線信號測量上。本文介紹了實時頻譜分析儀的總體框架，重點闡述了CCDF測量功能的原理和處理流程。并以OFDM系統(正交頻分復用)為應用背景驗證了這種算法的有效性。
關鍵詞：CCDF；OFDM；實時頻譜分析儀；PAPR；多載波信號
中圖分類號：TM935.21 文獻標識碼：A 文章編號：1672-4984（2007）01-0040-03
The implement of CCDF in real-time spectrum analyzer
ZHANG Li， QIN Kai-yu
（University of Electronic Science and Technology，Chengdu 610054，China）
Abstract:Real-time spectrum analyzer can real-timely measure the communication signals. CCDF, which can measure multi-carrier signals very effectively, is one of the important technologies of real-time spectrum analyzer. What’s more, it is widely applied to the wireless signal measurement in 2G and 3G. This paper introduced the main software frame of real-time spectrum analyzer, and it focuses on the principle and processing flow of CCDF. The computer simulation，which bases on the background of OFDM, demonstrates the effectivity of CCDF.
Key words:CCDF；OFDM；Real-time spectrum analyzer；PAPR；Multi-carrier signals
