digital down convert造句
例句與造句
- It is very difficult to realize digital rf , but we can realize digital if . digital if mainly include : digital up convert ( duc ^ digital down convert ( ddc ) , a / tk d / a and number control oscillator ( nco )
目前實現(xiàn)射頻數(shù)字化還有一定的困難，但可以實現(xiàn)中頻部分數(shù)字化。數(shù)字中頻處理主要包括數(shù)字上變頻、數(shù)字下變頻、 a d與d a的處理以及數(shù)控振蕩器等。 - This system is based on two altera ’ s statixii series fpga chips ep2s180f1020c5 , and the tunner dtt7579 and the chip ad9433 , together composed the main hardware platform . the hardware description system running on the fpga is the core of digital down converted sysgtem , synchronization system , estimation and equalization of channel system , 3780 - point fft ofdm demodulation system , frequency equalization system and ldpc decoding
以兩片altera公司的stratixii系列ep2s180f1020c5級聯(lián)為基礎(chǔ)構(gòu)建了系統(tǒng)主硬件處理平臺,結(jié)合湯姆遜公司的調(diào)諧器dtt7579以及ad9433組成了系統(tǒng)的硬件構(gòu)架fpga可描述硬件系統(tǒng)的核心任務(wù)包括數(shù)字下變頻,同步和信道均衡與估計, 3780點fftofdm解調(diào),頻域均衡, ldpc解碼。 - Digital down converting is one of the key technologies of software radio . it can improve the efficiency and reliability of communications . lt is also important to realize software radio receivers . the paper focuses on the technologies involved in digital down converting , such as integer sampling - rate conversion , non - integer sampling - rate conversion and carrier frequency offset estimation algorithm . on the base of these , the paper analyzes applications of digital down converting in the hsp50214b programmable downconverter . the hardware and sofeware of the application of digital down converting are also introduced
數(shù)字下變頻技術(shù)是軟件無線電中的關(guān)鍵技術(shù)之一。該技術(shù)不僅有助于提高通信的有效性和可靠性，還對實現(xiàn)真正的軟件無線電臺有著重要的意義。本文對數(shù)字下變頻所涉及整數(shù)倍采樣率轉(zhuǎn)換、非整數(shù)倍采樣率轉(zhuǎn)換和載波初始頻差估計校正作了較深入的研究，并提出了一些實用高效的實現(xiàn)結(jié)構(gòu)和算法。 - It's difficult to find digital down convert in a sentence. 用digital down convert造句挺難的