A simple spectra computing approach for continuous-phase phase modulation (CPPM)
學年 100
學期 1
發表日期 2011-12-07
作品名稱 A simple spectra computing approach for continuous-phase phase modulation (CPPM)
作品名稱（其他語言）
著者 Yang, Richard Hsin-hsyong; Lee, Chia-kun; Chern, Shiunn-jang
作品所屬單位 淡江大學電機工程學系
出版者 Institute of Electrical and Electronics Engineers
會議名稱
會議地點
摘要 Recently, we have developed a special class of continuous-phase modulation (CPM) scheme, called the continuous-phase phase modulation (CPPM); it transmits the PAM information sequences using time-limited phase shaping pulses. In this paper, the power spectra for this novel CPM are investigated. We employ autocorrelation function approach to modify the CPM spectra computing formula for time-limited phase shaping pulse. Since CPPM is a CPM modulator with time-limited phase shaping function, previous research believed that such modulator will have data-independent spectral lines and suggested to be avoided. However, we show that the spectral lines can be diminished by choosing appropriate modulation index, modulation level and phase shaping pulse. Spectra for two classes of CPPM schemes are given. It is shown that the bandwidth of CPPM scheme can be effectively reduced by using smaller modulation index andlor increasing the correlative length and modulation level. The resultant CPPM schemes have attractive spectral occupancy as compared to conventional CPM.
關鍵字 Continuous-phase Modulation; Power Spectrum; Digital PM; Autocorrelation Function Approach
語言 en
收錄於
會議性質 國際
校內研討會地點
研討會時間 20111207~20111209
通訊作者
國別
公開徵稿
出版型式
出處 2011 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), Chiang Mai, Thailand
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