非相干解调

针对跳频产生的相位不连续情况，采用了Viterbi非相干解调算法。

Noncoherent demodulation based on Viterbi detection was used for the discontinuity of FH signal .

之后本文深入研究了GMSK的调制解调算法，分别对GMSK非相干解调算法在高斯信道、衰落信道以及有频偏环境中的性能进行了分析和仿真。

Then the paper studies the GMSK modulation and demodulation algorithm , including the noncoherent demodulation algorithm in the Gaussian channel and fading channel and the effect of frequency offset .

没有信道估计的OFDM系统只能采用非相干解调。

Without channel estimation , single OFDM system can only work under non-coherent conditions .

基于多符号差分相关的CPM非相干解调算法

Non-coherent demodulation of continuous phase modulation signals based on multi-symbol differential correlation

用声表面波器件对MSK扩频信号进行非相干解调

Non-Coherent Demodulation of Spread Spectrum MSK Signal by SAW Device

GMSK信号的非相干解调技术研究

Study of demodulation with noninterference about GMSK signal

同时，针对普通RAKE接收机在非相干解调时会引入射频损耗因子的问题，本文介绍了多径载波相干解调的概念。

At the same time , multi-path signal coherent demodulation RAKE receiver is also proposed to solve the problem of radio loss factors caused by non-coherent demodulation .

声表面波脉压系统主旁瓣比改善的研究用声表面波器件对MSK扩频信号进行非相干解调

Performance Improvement on the Side-lobe Levels of SAW Pulse Compression System Non-Coherent Demodulation of Spread Spectrum MSK Signal by SAW Device

本文提出了CPM的非相干解调与2状态格状译码的方法，并对GMSK信号进行了误码性能的模拟。

An approach for CPM with noncoherent detection and 2-state trellis decoding is presented in this paper , and simulations are made for GMSK .

混沌键控（CSK）按解调方式通常分为相干解调的CSK与非相干解调的CSK。

Chaos Shift Keying ( CSK ) is generally divided into two categories by demodulation method as coherent detection CSK and non-coherent ones .

第三部分是GMSK调制解调原理，对VDL中信息传输方式进行实现，在解调过程中采用非相干解调方式。

The third part is based on the principle of GMSK modulation and demodulation , which achieves the VDL information transmission , with the method of non-coherent demodulation during the demodulating process .

高斯最小频移键控（GMSK）具有极好的频谱利用率、功率效率和可以采用非相干解调等优点，已经广泛应用于无线通信系统，尤其是移动通信领域。

With the advantages of good spectrum utilization and power efficiency as well as noncoherent demodulation can be employed , GMSK ( Gaussian Minimum Shift Keying ) has been widely applied in the wireless system .

首先介绍FSK信号的基本特征、常用接收方法以及性能，然后重点研究FSK信号数字非相干解调模型和基于多DSP软件无线电平台的实现。

First , the basic characteristics of the FSK signals , the receiving methods in common use and the capacity were introduced . Then , the model of the digital non-coherent demodulation of the FSK signals and the implement on DSP platform were researched emphatically .

文章把相干解调器和非相干解调器作为基本解调器件，以简明、准确的分析方法分别对DSB、SSB及AM信号的信噪比得益进行数学计算，并给予一定的物理解释。

In this paper , the coherent and non-coherent demodulators are considered as basic demodulation devices , and by using a concise but accurate method , the figures of merit of DSB , SSB , AM signals are respectively calculated , and the relevant physical meanings are given .

非相干解调器门限的计算及降低之途径

Calculation on threshold value of incoherence demodulator and lowering way

伪码时钟调频非相干解调器的研究一种用于计算机通信的解调器

Analysis of Noncoherent Demodulator for PN Code Signals with Clock Frequency Modulation

编码扩频通信系统中非相干解调技术研究

Study on Noncoherent Demodulation in Coded-Spread Spectrum Communication System

最后，针对采用鉴频器的非相干解调给出了整个系统的实现方案。

Finally , the implement method of communication system applied noncoherent demodulation technique with frequency discriminator is discussed .

该方法属于非相干解调方式，可以采用软件解调，而且可以产生数据的同步时钟。

It is a noncoherent demodulation method and can be achieved by software . Moreover , a clock can be generated to synchronize output data .

基于双多进值正交扩频系统非相干解调的硬判决信息不利于软输入软输出译码，提出了一种新型软判决信息提取算法。

This paper presented a novel decision scheme with soft output for SISO decoding when noncoherent receiver for dual M-ray orthogonal spreading symbols is employed .

本文特别指出，在小信噪比输入的条件下，非相干解调器的门限效应严重恶化，甚至使收信机无法工作。

It is emphasized that under some poor SNR conditions , the threshold effect of non-coherent demodulator degrades seriously , even causes the receiver to be out of work .

确定了时间装定信号的内脉冲编码数据传输方法；选择了信号频率调制及非相干解调方法和检错重收的差错控制方法。

And at same time , I choose the inner pulse coding method on data transmission for the signal of the time setter , use frequency modulation and unrelatable demodulation , and apply error checking to the error control .

从克服二进制移相键控（2PSK）的倒π现象出发，提出一种2PSK非相干解调法，并对其解调原理和抗噪声性能进行了详细的分析介绍。

To overcome the problem of " inverse π" of 2 PSK ( Binary Phase shift keying ), a new kind of non coherent demodulation for 2 PSK was proposed , and the principle and noise resistance of the system was analyzed .

FSK信号的非相干数字解调技术

Noncoherent Digital Demodulation Technology of FSK Signals

非理想相干解调时格栅编码调制的性能

The Performance Evaluation of Trellis-Coded Modulation on Imperfect Coherent Detection

连续相位调制的非相干复合网格解调算法

A Non-coherent Composite Trellis Demodulation Algorithm of Continuous Phase Modulation

非相干解扩解调器频偏影响分析

Analysis of Frequency-offset Effect for Noncoherent Despread / Demodulator

非相干解扩解调信号的范数计算方法

A norm method for noncoherent despreading / demodulation signal

依据向量范数等价性原理，将正交码扩频系统中非相干解扩解调信号的能量计算推广为向量范数的计算。

The energy calculation of the noncoherent despreading / demodulation signal was extended into vector norm calculation based on the equivalence property theory of vector norm in the orthogonal codes spread spectrum system .

然后，论文提出了一种无数据辅助非相干方式的同步解调联合算法，该算法突出的特点是能够对抗符号间干扰和帧间干扰。

Consequently , the noise and IFI can be mitigated effectively . Secondly , a blind synchronization and demodulation algorithm is proposed for noncoherent receiver that is robust to ISI and IFI .