Zobrazeno 1 - 4
of 4
pro vyhledávání: '"向劲"'
Publikováno v:
Guangtongxin yanjiu, Vol , Pp 57-61 (2017)
针对大定时误差下串行级联脉冲位置调制（SCPPM）同步难的问题,提出一种基于期望最大化（EM）算法估计的SCPPM码辅助迭代定时同步方法。该方法首先由SCPPM译码输出软信息构造出评价函数,先
Externí odkaz:
https://doaj.org/article/ec7b78fb40184c058dc32490634052b4
Publikováno v:
Guangtongxin yanjiu, Vol , Pp 60-62 (2016)
在空间光通信系统中,每个入射光脉冲都会发生脉冲展宽效应,导致时隙似然比计算时出现信息丢失,系统性能下降。文章基于PPM（脉冲相位调制）与LDPC（低密度奇偶校验码）迭代解调系统,研
Externí odkaz:
https://doaj.org/article/b15135c5975f445cac109c33064e273a
Autor:
Hsiang ,chin-chi, 向勁齊
102
In this research, the nitride-based near-UV light-emitting diodes (LEDs) with different aluminum mole fraction quantum barrier, and observe the electrical and optical properties of different aluminum mole fraction quantum barrier. The alumi
In this research, the nitride-based near-UV light-emitting diodes (LEDs) with different aluminum mole fraction quantum barrier, and observe the electrical and optical properties of different aluminum mole fraction quantum barrier. The alumi
Externí odkaz:
http://ndltd.ncl.edu.tw/handle/a7wx3m
