This paper describes the error control coding of the flex paging system , with emphasis on the design and implement of the flex decoder circuit by means of the fpga technology 本文介紹了flex高速無(wú)線尋呼系統(tǒng)中的差錯(cuò)控制編碼技術(shù),以及bch ( 32 , 21 )糾錯(cuò)碼的構(gòu)成和譯碼方法,重點(diǎn)討論了flex高速尋呼解碼芯片的fpga設(shè)計(jì)與實(shí)現(xiàn)。
This is the core of the issue . in this section we designed the cells of the dac , including the decoder circuit , bandgap reference voltage circuit , current source circuit and switched circuit etc . the fourth chapter the simulations of circuit and errors of the dac are discussedi , so the simulation waveforms are plotted on the paper and we must take the error corrections and minimize ways 對(duì)于整個(gè)d a轉(zhuǎn)換器的具體結(jié)構(gòu)和電路設(shè)計(jì)放在第三章,這也是本文的核心之處,對(duì)d a轉(zhuǎn)換器的整體電路及主要電路單元如:數(shù)字譯碼電路、帶隙參考電壓源電路、電流源產(chǎn)生電路、差分電流開(kāi)關(guān)電路等進(jìn)行詳細(xì)地分析和設(shè)計(jì)。