張 瓅， 秦開宇
（電子科技大學(xué)，四川 成都 610054）
摘 要：實(shí)時(shí)頻譜分析儀可以對通信信號進(jìn)行實(shí)時(shí)測試，符合現(xiàn)代通信分析儀的發(fā)展趨勢。CCDF測量是實(shí)時(shí)頻譜分析儀的關(guān)鍵技術(shù)之一，對于測量多載波信號非常有用。它普遍應(yīng)用在2G和3G無線信號測量上。本文介紹了實(shí)時(shí)頻譜分析儀的總體框架，重點(diǎn)闡述了CCDF測量功能的原理和處理流程。并以O(shè)FDM系統(tǒng)(正交頻分復(fù)用)為應(yīng)用背景驗(yàn)證了這種算法的有效性。
關(guān)鍵詞：CCDF；OFDM；實(shí)時(shí)頻譜分析儀；PAPR；多載波信號
中圖分類號：TM935.21 文獻(xiàn)標(biāo)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
