| 指数函数分解法的CPM非相干序列估计 |
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| 引用本文： | 方继承,贾哲,于全.指数函数分解法的CPM非相干序列估计[J].电子科技大学学报（自然科学版）,2008,37(3):358-360. |
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| 作者姓名： | 方继承 贾哲 于全 |
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| 作者单位： | 1.国防科技大学电子科学与工程学院 长沙 410073; |
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| 摘 要： | 连续相位调制本身所具有的高效频谱和功率利用率使得这种调制方式非常适合应用于无线通信环境中,但其解调的复杂度也随着记忆长度和进制数的增加呈指数增长。该文给出的非相干序列估计算法,通过将大量的参考信号分解成矢量形式,将信号间的相关运算转化为矢量乘法运算,可以有效地降低CPM解调器前端复杂度;在序列译码阶段,采用的是指数窗的截短方法,在不损失性能的前提下有效降低了解调器后端的复杂度。
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| 关 键 词： | 连续相位调制 最大似然序列检测 非相干序列估计 每幸存路径处理 |
| 收稿时间： | 2006-11-01 |
| 修稿时间： | 2006年11月1日 |
A NSE Algorithm for CPM Based on Exponential Functions Decomposition |
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| FANG Ji-cheng,JIA Zhe,YU Quan.A NSE Algorithm for CPM Based on Exponential Functions Decomposition[J].Journal of University of Electronic Science and Technology of China,2008,37(3):358-360. |
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| Authors: | FANG Ji-cheng JIA Zhe YU Quan |
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| Affiliation: | 1.School of Electronic Science and Engineering,National University of Defense and Techology Changsha 410073;2.China Electronic System Eguipment Corporation Fengtai Beijing 100039 |
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| Abstract: | Continuous phase modulation (CPM) is an attractive technique for wireless communications due to its highly power and bandwidth efficiency, but the complexity of the CPM receiver increases exponentially with the modulation parameters. This paper proposes a noncoherent sequence estimation (NSE) algorithm which reduces the complexity of CPM demodulator remarkably. The front-end of the receiver is substituted by signal decomposition followed by vector multiplication, and the sequence decoding part of the back-end is truncated by the exponential window. |
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