翻訳と辞書 Words near each other ・ Zadobrova, Ljubljana ・ Zadobrze, Masovian Voivodeship ・ Zadobrze, Podlaskie Voivodeship ・ Zadoc (given name) ・ Zadoc Benedict ・ Zadoc Dederick ・ Zadoc Kahn ・ Zadoc L. Weatherford ・ Zadoc Long Free Library ・ Zadoc P. Beach ・ Zadock Cook ・ Zadock Pratt ・ Zadock Pratt House ・ Zadock Taft House ・ Zadock Thompson ・ Zadoff–Chu sequence ・ Zadoi County ・ Zadok ・ Zadok (disambiguation) ・ Zadok Ben-David ・ Zadok Casey ・ Zadok Domnitz ・ Zadok HaKohen ・ Zadok Magruder ・ Zadok Malka ・ Zadok the Priest ・ Zadoks scale ・ Zadole Park ・ Zadole, Lublin Voivodeship ・ Zadole, Łódź Voivodeship Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Zadoff–Chu sequence ： ウィキペディア英語版 Zadoff–Chu sequence A Zadoff–Chu (ZC) sequence, also referred to as Chu sequence or Frank–Zadoff–Chu (FCZ) sequence, is a complex-valued mathematical sequence which, when applied to radio signals, gives rise to an electromagnetic signal of constant amplitude, whereby cyclically shifted versions of the sequence imposed on a signal result in zero correlation with one another at the receiver. A generated Zadoff–Chu sequence that has not been shifted is known as a "root sequence". These sequences exhibits the useful property that cyclically shifted versions of itself are orthogonal to one another, provided, that is, that each cyclic shift, when viewed within the time domain of the signal, is greater than the combined propagation delay and multi-path delay-spread of that signal between the transmitter and receiver. The complex value at each position ''n'' of each root Zadoff–Chu sequence parametrised by ''u'' is given by : $x\_u(n)=e^\}\},\; \backslash ,$ where : : : $q\; \backslash in\; \backslash Z,$ : $N\_\backslash text\; =\; \backslash text\backslash ,$ Zadoff–Chu sequences are CAZAC sequences (constant amplitude zero autocorrelation waveform). They are named after Solomon A. Zadoff and D. C. Chu. Note that the special case $q\; =\; 0$ results in a Chu sequence. == Properties of Zadoff-Chu sequences == 1. They are periodic with period $N\_\backslash text$ if $N\_\backslash text$ is odd. : $x\_u\; (\; n\; +\; N\_$ is prime, Discrete Fourier Transform of Zadoff–Chu sequence is another Zadoff–Chu sequence conjugated, scaled and time scaled. : $X\_()=\; x\_^(\backslash tildek)\; X\_()$ where $\backslash tilde$ is the multiplicative inverse of u modulo $N\_\backslash text$. 3. The auto correlation of a Zadoff–Chu sequence with a cyclically shifted version of itself is zero, i.e., it is non-zero only at one instant which corresponds to the cyclic shift. 4. The cross-correlation between two prime length Zadoff–Chu sequences, i.e. different values of $u,\; u=u\_1,\; u=u\_2$, is constant $\backslash sqrt$ 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Zadoff–Chu sequence」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.