會議論文
| 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 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/75288 ) |