教師資料查詢 | 類別: 期刊論文 | 教師: 陳巽璋 Shiunn-jang Chern (瀏覽個人網頁)

標題:Continuous Phase Modulation (CPM) Revisited: Using Time-limited Phase Shaping Pulses
學年102
學期1
出版(發表)日期2013/11/01
作品名稱Continuous Phase Modulation (CPM) Revisited: Using Time-limited Phase Shaping Pulses
作品名稱(其他語言)
著者Yang, Richard Hsin-Hsyong; Lee, Chia-Kun; Chern, Shiunn-Jang
單位淡江大學電機工程學系
出版者Tokyo: Denshi Jouhou Tsuushin Gakkai
著錄名稱、卷期、頁數IEICE Transactions on Communication E96-B(11), pp.2828-2839
摘要Conventional CPM signals employ information sequence with time-unlimited phase shaping pulse (PSP) to achieve power and bandwidth efficient transmission. On the contrary, information sequence using time-limited PSP was believed to produce power-wasting data-independent discrete spectral lines in CPM spectra, and was suggested to be avoided.
In this paper, we revisit this problem and adopt the time-limited PSP to replace the one with time-unlimited, it turns out to have an alternative solution to the CPM scheme. We first modify the spectral computing formula for the CPM with time-limited PSP (or CPM-TL) from conventional CPM formula and show that the discrete spectral lines appeared in the power density spectrum of CPM-TL signals can be diminished or become negligible by appropriately choosing PSP. We also show that this class of CPM can use any real number modulation index (h) and the resultant trellis structure of CPM guarantees the maximum constraint length allowed by the number of states in the MLSD receiver. Finally, the energy-bandwidth performance of CPM using time-limited PSP is investigated and compared with conventional CPM with time-unlimited PSP. From numerical results we show that, under the same number of states in the MLSD receiver and bandwidth occupancy, this subclass of CPM could outperform the conventional CPM up to 6 dB coding gain, for h < 1, in many cases.
關鍵字Continuous Phase Modulation; Time-limited Phase Shaping
語言英文
ISSN1745-1345
期刊性質國外
收錄於SCI;
產學合作
通訊作者Yang, Richard Hsin-Hsyong
審稿制度
國別日本
公開徵稿
出版型式,電子版,紙本
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