code synchronization造句
例句與造句
- Complete the design of code synchronization module , carry the simulation and analyze the result
對位同步進行算法設計,編程,軟件仿真,結(jié)果分析。 - Two new speech detection methods based on neural networks using barker coded synchronization signal are presented
提出了兩種采用巴克碼編碼同步信號并基于神經(jīng)網(wǎng)絡的起點檢測新方法。 - Pn code synchronization algorithm based on serial - search acquisition scheme and delay - looked loop tracking is discussed in detail
闡述了基于滑動相關捕獲及延遲跟蹤環(huán)跟蹤的偽碼同步技術的設計與實現(xiàn)。 - The code synchronization pulse brought from code synchrolock has the synchronization benchmark heart function in the demodulation processing . at the same time , it is the base of frame demodulation and datum processing
位同步器產(chǎn)生的位同步信號起著遙測解調(diào)處理“同步基準”的關鍵作用,是后續(xù)幀格式解調(diào)和數(shù)據(jù)處理的基礎。 - The design of pn code synchronization should find a trade - off between the performance and the complexity of the reciever . in this paper , the pn code synchronization technique in spread spectrum communication is introduced
本論文首先介紹擴頻系統(tǒng)中采用的pn碼同步技術,然后結(jié)合wcdma上行鏈路的特點,提出適合wcdma上行鏈路的擴頻碼同步方案。 - It's difficult to find code synchronization in a sentence. 用code synchronization造句挺難的
- Secondly , the dissertation presents a 3 - dimensional searching method with afc and pn code synchronization and adaptive array convergence in order to accurately estimate the frequency difference between the received signal and the local oscillator
其次，為了準確估計接收信號和本地振蕩器之間的頻差，提出了afc 、 pn碼同步、自適應陣收斂的三維搜索策略。 - It not only considers the effect of frequency error and data modulation , but also realizes code synchronization and frame synchronization at the same time . all these research work will give a valuable reference to the design of the new communication systems
本文對擴頻通信系統(tǒng)構(gòu)成和原理,擴頻序列設計與優(yōu)選,擴頻序列同步問題進行了研究,并進行了相應的仿真。 - This paper focuses on the blind code synchronization approach and spreading sequences estimation algorithm . the main results can be summarized as follows : 1 . both synchronous and asynchronous dsss / bpsk baseband signal models are established
本文重點是對盲碼同步和擴頻碼序列估計的研究,主要的工作成果如下: 1 、分同步和非同步兩種情況建立了dsss / bpsk基帶信號模型,并介紹了二種非合作式擴頻碼序列估計和解擴的方案。 - A modified synchronization approach by using sliding windows is proposed . the pre - processing for obtaining principal eigenvectors is a smoothing procedure for the dsss signal . the computer simulations show that the approach is more convenience in low snr comparing with other code synchronization methods
3 、提出了一種改進滑動窗的盲同步方法,該方法利用求主特征向量的過程,對擴頻信號進行平滑降噪預處理,實現(xiàn)了較低信噪比下的碼同步。 - Moreover two types of non - cooperative sequences estimation and despreading schemes are introduced briefly . 2 . several usual blind code synchronization methods , including delay multiply ( sliding autocorrelation ) , maximum norm and average noise reduction approaches are summed up and analyzed by computer simulations
2 、總結(jié)和介紹了幾種常用的盲碼同步方法,包括延遲相乘(滑動自相關)法、最大范數(shù)法、平均降噪法等,并進行了計算機仿真和分析。 - And the pn code synchronization scheme adequate for the wcdma uplink is presented and combined with finger management , channel estimation and mrc algorithms to complete the rake receiver scheme . simulations on pd / pf and pd / ebno show the scheme has good preformance and meets the requirement of wcdma uplink in 3gpp protocols
分別采用pd / pf方法和bler / ebno方法對同步方案進行仿真,仿真結(jié)果表明,本論文提出的擴頻碼同步方案的捕獲概率和虛警概率能滿足要求,同時總體接收機方案能達到3gpp協(xié)議中上行鏈路的性能要求。 - Other than traditionally theory analyze and discussion of digital correlator which is laid after demodulator , a scheme based on non - interrelated correlative dll will be discussed in this paper after referencing the theory and the result of simulation . the demodulated data and the information of carrier are not need in this plan . we sample the result of correlation between local sequences and the received signal , then realizing the code synchronization by software
不同于一般的理論分析以及解調(diào)后數(shù)字相關器的討論，本文通過理論分析與仿真結(jié)果，選用了非相干相關同步的基本結(jié)構(gòu)，并加以改進，不需要解調(diào)和載波的信息，將本地序列與接受信號直接相關后進行采樣，通過軟件的方法，實現(xiàn)同步。 - This dissertation adopts a universal digital ds / dmpsk modulation and demodulation scheme which is based on fpga . this scheme adopts quadrature balanceable modulation , intermediate frequency sampling , digital matched filtering , delay differential demodulation techniques and so on . it directly processes the digital signals on intermediate frequency without down - conversion , and doesn ’ t need pseudo random codes synchronization and carrier wave extraction circuits
本文采用了一種基于fpga的通用數(shù)字調(diào)制解調(diào)方案,該方案在調(diào)制端采用了正交平衡調(diào)制技術,在解調(diào)端采用了中頻帶通采樣、數(shù)字匹配濾波、延時差分解調(diào)等技術,直接在中頻上進行數(shù)字信號處理,不需要進行下變頻,也不需要增加額外的偽隨機碼同步捕獲和載波提取電路。