spread spectrum code造句
例句與造句
- spread spectrum code-sequence generator
擴頻碼序發(fā)生器 - firstly, the spread spectrum codes of ocdma system are discussed
首先，就ocdma系統(tǒng)的擴頻碼展開了研究和討論。 - wcdma use ovsf code as channel spread spectrum code . ovsf play an important role in . wcdma which offers flexible traffics
wcdma的信道擴頻采用了長度可變的正交碼序列，即ovsf碼用作擴頻碼。 - but ocdma system uses optical signal processing and fiber transmission, the design method of spread spectrum codes and the technique to implement will be distinct from radio cdma
但ocdma系統(tǒng)采用了光信號處理和光纖傳輸，因而在擴頻碼的設(shè)計和實現(xiàn)方法等方面都具有特殊性。 - in cdma communication system, the users are identified by their different sprend spectrum codes which are unique to each user, namely they are identified by the cross correlation of spread spectrum codes
這一方法既利用了期望用戶的擴頻碼信息,又充分利用了各用戶信息間的獨立性。 - It's difficult to find spread spectrum code in a sentence. 用spread spectrum code造句挺難的
- synchronization technique of spread spectrum code is utilized in two stages . multipath searcher coarsely estimates the pn code phase and code tracking confirm the pn code phase precisely
這需要采用擴頻系統(tǒng)中擴頻碼同步技術(shù),即:多徑搜索粗略地估計pn碼相位,同步跟蹤精確確定pn碼相位。 - in cdma communication system, the users are identified by their different spread spectrum codes which are unique to each user, namely they are identified by the cross correlation of spread spectrum codes
在cdma系統(tǒng)中各用戶是根據(jù)地址擴頻碼的不同，即根據(jù)它們之間互相關(guān)特性來區(qū)分的。 - in cdma communication system, the users are identified by their different spread spectrum codes which are unique to each user, namely they are identified by the cross correlation of spread spectrum codes
在cdma系統(tǒng)中各用戶是根據(jù)地址擴頻碼的不同，即根據(jù)它們之間互相關(guān)特性來區(qū)分的。 - therefore the capability of spread spectrum code is the key to the capability of area navigation system . in this thesis parallel phase-shifting sequence as spread spectrum code is given, which has better capability
所以擴頻碼的相關(guān)性能直接關(guān)系到系統(tǒng)的通信性能,本文提出用m序列移位序列作擴頻地址碼,具有更好的性能。 - therefore the capability of spread spectrum code is the key to the capability of area navigation system . in this thesis parallel phase-shifting sequence as spread spectrum code is given, which has better capability
所以擴頻碼的相關(guān)性能直接關(guān)系到系統(tǒng)的通信性能,本文提出用m序列移位序列作擴頻地址碼,具有更好的性能。 - the manner of modulation, the spread spectrum codes, and the manner of the acquisition and tracking are discussed . barker codes, dpsk and match filter with the ability of rapid acquisition are concluded as the appropriate manner for cdma missile controlling and guiding
對擴頻碼、調(diào)制解調(diào)方式、捕獲與跟蹤方式進行討論，得出barker碼、dpsk、匹配濾波器快速捕獲是適合便攜式反坦克導(dǎo)彈cdma無線制導(dǎo)的相應(yīng)工作方式。 - spread spectrum code division multiple access technique ( ss-cdma ) has successfully been applied in the second generation mobile communication system, such as is-95 . moreover, the main technique of the third generation mobile communication system is also based on cdma
擴頻碼分多址已成功地應(yīng)用于第二代移動通信中，如is-95，而且第三代移動通信的主要方案也都是基于碼分多址cdma，因此cdma技術(shù)具有無可爭辯的競爭力。 - finally, according to the configuration of network, spread spectrum codes and fbgs based encoder / decoder for ocdma system, the mathematical models for ds, fe, fm and ds / fh versions of ocdma system are investigated respectively . then, the system is simulated and analyzed
最后，根據(jù)ocdma系統(tǒng)的網(wǎng)絡(luò)結(jié)構(gòu)、擴頻碼和fbg編解碼器，得出了ds、fe、fh以及dsfh等ocdma系統(tǒng)的數(shù)學(xué)模型，并據(jù)此對多用戶干擾受限的上述ocdma系統(tǒng)進行了信號仿真和性能分析。 - based on the analyzing, concluding and summarizing the publications concerned, my dissertation mainly focuses on three aspects of the ocdma system with fiber bragg gratings ( fbgs ) based encoder / decoder, namely, spread spectrum codes, fbgs based encoder / decoder and performance evaluation
通過分析、歸納和總結(jié)大量的國內(nèi)外文獻，本文從擴頻碼、光纖布拉格光柵(fbg)編解碼器和性能分析等三個方面就“基于fbg編解碼器的ocdma系統(tǒng)”展開了大量的研究工作。 - this thesis investigates the application and implementation of adaptive array based on mmse criteria in the presence of strong man-made interferences and aperiodic spread spectrum codes, including reference signal generating, afc in adaptive antennas array, and an application of adaptive antennas for a general non-spread spectrum signal, ssb ( single sideband ) communication system is presented . the thesis is outlined as follows
論文研究了在強人為干擾和非周期擴頻碼情況下，基于mmse準(zhǔn)則的擴頻系統(tǒng)自適應(yīng)天線陣的實現(xiàn)和應(yīng)用問題，包括參考信號提取、自適應(yīng)天線陣中的afc，并給出了在非擴頻信號單邊帶ssb(singlesideband)信號通信系統(tǒng)中的自適應(yīng)天線的應(yīng)用。
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