幀同步通道 的英文怎麼說
中文拼音 [zhèngtóngbùtōngdào]
幀同步通道
英文
frame synchronizing channel- 幀 : 量詞(幅, 用於字畫)
- 步 : Ⅰ名詞1 (步度; 腳步) pace; step 2 (階段) stage; step 3 (地步; 境地) condition; situation; st...
- 通 : 通量詞(用於動作)
- 道 : Ⅰ名詞(道路) road; way; route; path 2 (水流通過的途徑) channel; course 3 (方向; 方法; 道理) ...
- 通道 : thoroughfare; passageway; pass; enterclose; gallery; drong; tunnel; avenue; alure; way; row; key ...
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Later the couple nodes can implement the control frame transmission or data transmission. this kind of data transmission protocol based on slot precontract basically fulfills the networking and data transmission function
同步呼叫協議主要用於完成點到點鏈路建立和業務通道的協商任務,協商完畢即可在後續的時間內在業務通道上完成控制幀或數據幀的傳輸。Based on the dsp development board, the author finishes the hardware debug about the multi - channel buffered serial port ( mcbsp ) receiving the output signal from the gps if collector and resolves the software program of the receiving buffer of the multi - channel synchronous serial data, data integration, udp datagram encapsulation and network interface driver, etc. the real - time udp datagram receiving, data frame de - encapsulation and high speed data memory are implemented, and a friend application interface with windows message is developed on the pc
基於dsp開發板,作者完成了dsp的多通道緩沖串口( mcbsp )接收gps中頻接收機輸出信號的硬體調試,並解決了多通道同步串口數據的接收緩沖、數據合併、 udp數據報裝幀及網路介面驅動等軟體編程。在pc端,通過mfc的網路應用開發類casyncsocket實現udp報的實時接收、數據解幀譯碼、高速存貯,利用windows消息機制開發了應用程序友好界面。Also it could realize the call processing function in cooperation with other exchanges via its stm - 1 interface. we suggest that ericsson further improve the frame synchronization detection feature and the s1 byte display feature on its stm - 1 exchange interface, and add far - end error indication on the multiplexing segment and low - order and high - order channels and far - end out - of - work indication on the low - order channel
建議愛立信交換機stm - 1介面完善其幀同步檢測功能和s1位元組顯示功能,並增加復用段遠端差錯指示功能、高階通道遠端差錯指示功能、低階通道遠端差錯指示功能和低階通道遠端失效指示功能等傳輸告警功能。It was proved that shanghai bell s p3s exchange could not terminate some alarm overhead bytes. instead, it sent back those bytes to mistake local errors for far - end faults. we suggest that shanghai bell terminate such bytes, improve the frame synchronization detection function and the processing of s1 bytes, and add far - end error indication on the multiplexing segment and low - order and high - order channels and far - end out - of - work indication on the low - order channel
測試結果表明,上海貝爾p3s交換機不能夠終結某些告警開銷位元組,而是將這些位元組進行回傳,從而將本端的錯誤誤認為是遠端的錯誤,建議上海貝爾p3s交換機按終結方式處理這些位元組,完善幀同步檢測功能和對s1位元組的處理,並增加復用段遠端差錯指示功能、高階通道遠端差錯指示功能、低階通道遠端差錯指示功能和低階通道遠端失效指示功能等傳輸告警功能。For example, carrier frequency offsets, which are caused by the inherent instabilities of the transmitter and receiver carrier frequency oscillators, can lead to severe system degradation due to inter - carrier interference ( ici ). symbol timing synchronization must also be achieved in order to avoid inter - symbol interference ( isi )
其載波頻率誤差會引入子通道之間的干擾( ici ) ,而幀同步的誤差會引入符號間干擾( isi ) ,同時還會對通道估計帶來嚴重的影響。The goal of this thesis is to accomplish base - band channel coding / decoding, fh framing / de - framing and fh synchronization, and also to control the modulator and demodulator in the prototype system. all these functions are implemented with a tms320vc5409 dsp
作為項目的一個重要組成部分,本文採用dsptms320vc5409實現了基帶處理部分的通道編解碼、跳頻意義的組拆幀和跳頻同步、並對調制解調晶元讀寫寄存器進行了配置。The design combines the advantages of hardware " s high - speed and software ' s low resources : 1 ) mc145572 is chosen to access the net providing 128kbit / s, 2b + d full dual channels ; 2 ) because of b channel " s large amount of user data and its high demands of real - time performance, the gsc hardware channel of intel 80c152 used as cup of the system is used to wrap / unwrap b channel " s sdlc, ensuring the system real - time working
第一,選用motorola的mc145572晶元來實現終端在u節點的n ? isdn的物理接入。提供2b + d通道的全雙工的數字通信,速率達128kbps 。第二, b通道承載數據量大,實時性要求高,採用intel80c152作為cpu ,利用其gsc硬體通道實現b通道數據的sdlc (同步數據鏈路)裝幀與解幀,以確保通信的實時性。This paper gives an overview on the development of wireless communication and the orthogonal frequency division multiplexing ( ofdm ) technique. basic characters of wireless channel, transmission principles and signal frame structure design of ofdm are introduced. main non synchronization factors between ofdm transceivers are pointed out
本文介紹了無線通信與多載波正交頻分復用( ofdm )技術的發展概況,闡述了無線通道的基本特性、 ofdm的調制解調原理與信號幀結構的設計,指出了導致ofdm收發信機間不同步的主要因素。And software method can resolve d channel ' s work for its less data communication ; 3 ) cpu 80c152 is synchronized with mc145572 by a simple synchronous circuit, avoiding the complex fpga interface circuit ; 4 ) data transmission use dma, which reduces the delay of data transmission and cpu occupying ; 5 ) 8bit software look - up table method can achieve 16bit crc quickly, which reduces the resource of both hardware and software
對通信數據量相對小的d通道,採用軟體實現裝幀與解幀。第三,採用結構簡單的外部同步時鐘電路實現80c152和接入晶元mc145572的同步傳輸,巧妙地避開了復雜的fpga介面電路。第四,利用dma技術完成數據快速收發,降低了數據傳輸時延及cpu佔用率。Frame synchronization and channel estimation under the certain implication are the focus of this chapter
特定工作環境下幀同步和通道估計是這一章的重點。The frame synchronization is researched. different from usual frame synchronization, one method, without synchronization code being known, is realized through programming. this method is to find synchronization code first and then to begin frame synchronization
進一步研究了幀同步問題,區別于普通的已知幀同步碼的幀同步過程,設計了一種在不知道幀同步碼的情況下搜索幀同步碼,然後再進行幀同步的方案,並用軟體實現。分享友人