前导序列

在哺乳动物中，有一个前导序列，通过IL-1β转换酶（ICE或者Caspase-1）在特定位点的切割使之称为有活性的成熟蛋白。

There is a leader sequence in mammals , that can be cut at specific site by IL-1 β - converting enzyme ( ICE or Caspase-1 ) .

λN基因前导序列对下游基因表达的控制作用

λ N Gene Expression Regulated by the Leader Sequence

基于前导序列的OFDM定时同步与信道估计算法

A preamble-aided timing synchronization and channel estimation scheme for OFDM systems

经DNA序列分析表明所获基因含有全部前导序列，其成熟蛋白编码部分与从第一骨架区引物所克隆的序列相符。

DNA sequences analysis indicated that the cloned genes included the whole leader sequences and the mature Ig protein encoding regions .

基于循环移位前导序列的OFDM载波同步方法

Carrier Frequency Synchronization Scheme of OFDM Based on Cyclic - shifted Preamble Sequences

基于高速移动环境的LTE上行随机接入前导序列的生成

Generation of preamble sequence in LTE uplink random access based on high-speed mobile environment

提出了一种在突发OFDM系统中，基于改进前导序列的快速粗符号定时方法。

Based on improved preamble , a kind of fast coarse symbol synchronization algorithm in burst OFDM communication is presented in this article .

同时也介绍了MIMO-OFDM系统中的同步技术，包括MIMO-OFDM帧同步和载波频率同步，并提出了改进的前导序列生成方法。

The algorithm of MIMO-OFDM synchronization is also proposed with improved training sequences including frame synchronization and frequency synchronization .

以回收的PCR产物为模板，用重叠PCR扩增带有前导序列的VH、VL基因。

Using PCR product as the template , the V_ κ and V_H genes with the leader sequences ( named L_ κ and L_H respectively ) were amplified by overlapping PCR .

通过执行双向解码，该解码算法充分利用了TDMA下行链路相邻时隙的前导序列，并给出高质量的软判决解码输出；

With a bidirectional decoding ( BD ) structure , the proposed algorithm fully utilizes the preambles of adjacent TDMA downlink slots and produces high quality soft decision output .

含与不含前导序列的乙肝病毒表面抗原在转基因番茄中表达的研究

Expression of Human Hepatitis B Virus Surface Antigen Gene With and without preS in Transgenic Tomato

以正向软判决为先验知识，反向处理利用基于下一时隙前导序列的自适应信道估计实现反向解码，并将反向软判决作为最终结果输出。

Then the backward PSP , taking the primary soft decision from forward PSP as the a priori knowledge , makes improved final soft decision output with adaptive channel tracking based on the preamble of next slot .

克隆枯草芽孢杆菌纤溶酶（Bacillussubtilisfibrinolyticenzyme，BSFE）基因及其前导肽序列。

Bacillus subtilis fibrinolytic enzyme ( BSFE ) gene with its signal peptide and propeptide sequece were cloned .

基于前导训练序列的MB-OFDM信道估计

Channel estimation of MB-OFDM based on preamble training symbols

相干解调经常应用于正交载波频分复用（OFDM）系统以达到更好的传输性能，但同时要求进行准确地同步。尽管如此，传统的添加前导训练序列的方法大幅地增加了对带宽的占用。

Coherent demodulation is usually adopted in orthogonal frequency division multiplexing ( OFDM ) system to achieve better performance . It means accurate synchronization are needed . However , traditional preamble training sequence decrease substantially bandwidth utilization .

该接收机可以在很短的前导字序列内完成载波和符号同步，采用线性近似的非相干检测算法来对非线性的GMSK信号实现解调。

A linearized non-coherent demodulator is used to process the nonlinear GMSK signals . Its demodulator can be used to achieve fast synchronization with feed forward loops .

前导码由前缀序列加扰而成。

The preamble code is scrambled by the prefix sequence .