學年
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104 |
學期
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1 |
發表日期
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2015-11-09 |
作品名稱
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Low Complexity Receiver for Continuous Phase Modulation using 3RC-TL Phase Shaping Pulses |
作品名稱(其他語言)
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著者
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Richard H.-H. Yang; Ming-Tsai Lee; Chia-Kun Lee; Shiunn-Jang Chern |
作品所屬單位
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出版者
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會議名稱
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2015 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) |
會議地點
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Nusa Dua, Bali, Indonesia |
摘要
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In our previous work, we presented an alternative
continuous phase modulation (CPM) scheme using time-limited phase shaping pulses (PSP), named as the CPM-TL. It could achieve large coding gains over conventional CPM using time-unlimited PSP (CPM-TU) in many cases. Also, we found a useful class of binary CPM-TL schemes that employed time-limited
raised cosine (RC) PSP, with pulse width equal to 3, denoted as 3RC-TL of CPM scheme. It has large coding gains over the Minimum Shift Keying (MSK) and Gaussian MSK (GMSK) that are two of most popular modulators among the family of CPM-UT scheme. The MSK and GMSK modulators of CPM-TU scheme are known to have lower complexity in receiver design
and excellent power-bandwidth performance. Basically, the optimal receiver of the 3RC-TL CPM scheme requires more complexity than the MSK or GMSK (using suboptimum receiver). In this paper, we deal with the reduce-complexity problem in receiver design for the 3RC-TL of CPM-TL scheme. To do so, we
decompose the CPM-TL signal into a set of pulse-amplitude modulated (PAM) waveforms, using Euler’s formula, which is different from the one suggested by Laurent in 1986. We show that the complexity of PAM-based 3RC-TL receiver can be simplified, and to be implemented with the Viterbi algorithm (VA) that contains two-PAM waveforms and two states. Similarly, we also compare with the GMSK (BT=0.25) using the PAM-based receiver, that required only one PAM waveform and two states, or two PAM waveforms and four states. We found that 3 RC-TL of CPM scheme has 2.5~3.45 dB coding gains over the GMSK with simplified PAM-based receiver. |
關鍵字
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Continuous phase modulation;Time-limited phase shaping pulses; PAM-based receiver;3RC-TL;MSK;GMSK;Coding gain;power-bandwidth performance |
語言
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en |
收錄於
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會議性質
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國際 |
校內研討會地點
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無 |
研討會時間
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20151109~20151112 |
通訊作者
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Richard H.-H. Yang |
國別
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IDN |
公開徵稿
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出版型式
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出處
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2015 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) (IEEE Explorer) |