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- When the period of direct sequences increases,the number of computations of this function will increase rapidly. 随着直扩序列周期的增加,该函数的运算量将迅速增加。
- The periodic correlation function is an important index to evaluate direct sequences. 周期相关函数是评估直扩序列相关性能的重要指标。
- By using the proposed method,the number of computations can be greatly decreased,which gives facilities for analysis and constructions of direct sequences. 通过使用该方法,可以大大减少运算次数,从而为直扩序列的分析和构造提供便利的工具。
- Spread spectrum has two distinct flavors: direct sequence and frequency hopping. 该技术有两个明显的变型：直接顺序与跳频。
- It was also the first pedigree of hemophilia A carrier and prenatal diagnosis made by direct sequencing in China. 此突变位点为国内首次报道,且该家系为国内首例运用直接核酸测序法进行HA携带者及产前诊断的家系。
- HBV genotypes were determined by type-specific primers PCR method. PreC/BCP mutations were detected by direct sequencing of PCR products,and Clustal W 1.8 software was applied to analyzing the sequences. 以型特异性引物PCR法检测16对乙肝疫苗阻断失败的母婴和88例阻断成功的母亲血清样本中HBV基因型;用PCR产物直接测序法检测HBV前C/ BCP突变;采用Clustal W 1.;8软件进行序列分析。
- A better method for direct sequence spread spectrum(DSSS) receiver to decrease the acquisition time is proposed. 提出一种减小直接序列扩频(DSSS)接收机信号捕获时间的改进方法。
- This paper proposes a method for narrowband interference suppression in Direct Sequence Spread System(DS-SS). 该文提出一种基于门限估计的直接序列扩频(DS-SS)通信系统窄带干扰变换域抑制方法。
- Direct sequence code division multiple access( DS/ CDMA) as a technique for underwater acoustic networks is attracting attention from researchers. 直接序列码分多址(ds/DMA)一种受关注的水下声通信网多址接入方案。
- This paper introduces GMSK into Direct Sequence Spread Spectrum(DSSS) communication system in order to obtain good performance of power spectrum. 本文将GMSK调制引入到直接序列扩频通信系统中,以期获得更好的功率谱利用率。
- Polymerase chain reaction (PCR) and direct sequencing technique were also used to confirm the mutation point of TTR gene. 结果 临床上该家系所有患者均以植物神经症状，如排尿障碍、胃肠道症状、阳痿为首发症状。
- An algorithm for the suppression of narrowband interference in the direct sequence spread-spectrum (DSSS) systems is presented. 摘要提出了直接序列扩频通信系统中抑制窄带干扰的一种算法。
- Genomic DNA was extracted.Polymerase chain reaction, direct sequencing and restriction enzyme reaction were performed to identify the mutations. 利用聚合酶链反应、DNA直接测序进行突变检测,进一步采用限制性内切酶酶切验证突变。
- Direct Sequence Spread Spectrum(DSSS)method is a major kind of anti-jamming technique which has been used extensively in communication fields. 直扩技术是一种在通信领域获得广泛应用的主要通信抗干扰技术。
- Blind despread of multi-sequence Direct Sequence Spread Spectrum signals (tamed DSSS signals) with unknown spreading codes are discussed in this paper. 该文研究的是在未知扩频序列的情况下，实现多序列直扩信号(也称软扩频信号)的解扩。
- The topic of this paper comes from the need of pricise carrier frequence measuring of Direct Sequence Spread Spectrum signal. 本论文课题来源于工程中要求对直接序列扩频信号载波频率进行精确测量的客观需求。
- She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
- Also,802.11 maintained compatibility with the three most popular radio transmission types: direct sequence spread spectrum,frequency-hopping spread spectrum,and infrared. 802.;11也保持了与三种最流行的无线电传输方式（直接顺序扩频、跳频扩频和红外线）的兼容性。
- I'll book you on a direct flight to London. 我将为你预订直飞伦敦的航班。
- Methods: Exon 11 of PAH gene was analyzed in 22 patients affected with classical PKU from Inner Mongolia by using PCR-SSCP-silver stain method and DNA direct sequencing. 方法:应用PCR-SSCP-银染法和DNA直接测序的方法,对22例内蒙古地区PKU病人PAH基因外显子11进行了检测。
