在数字通信系统中,全数字解调方法已经在高速的数字接收机中得到广泛应用。
In digital communication system, the method of all-digital demodulator has been extensive applied to high rate digital receiver.
在接收机中,使用了一种新颖的数字解调方法实现2rcCPFSK信号的解调。
In the receiver, a novel digital method is proposed to demodulate the 2rc CPFSK signal.
针对卫星usb测控系统中常用的DPSK - PM调制技术,设计了一种简单的数字解调方法。
A simple digital demodulation method is proposed for the DPSK-PM modulated signals, which are commonly used in the satellite USB (Unified S-band) tracking telemetry and command system.
本文的意义在于采用软件方法实现了数字化调制与解调,它是基于PC机声卡来完成的。
The significance for this paper is to realize digitized modulation and demodulation by means of the software. It is based on the audio-card of PC.
接着介绍了遥控遥测常用的数字调制信号的软件调制解调的数学模型和实现方法。
Then, the paper introduces the math module and achieving method of software modulation and demodulation of common digital modulating signals used in telecontrol & telemetry system.
利用数字采样系统的特性,克服了用数字方法解调调幅信号的固有困难,提出了一种新的数字方法来解调这类信号。
Taking advantage of the characteristics of digital systems, a new digital method is given in this article to overcome the difficulties in demodulating AM signals using digital methods.
传统的数字信号解调方法存在着载波恢复、符号同步等问题,实现起来较为复杂。
The traditional digital signal demodulation method that realizes more complex has the problems of carrier recovery, symbol synchronization and so on.
最后,对某超宽带正交解调接收机的实际测量结果的数字校正,验证了这种方法的有效性。
Finally, the validity of digital correction is verified by simulation and practical measurement of a UWB quadrature demodulation receiver.
目的研究一种用于电阻抗多频及参数成像数字采集系统的具有高抗噪性能和快速的解调方法。
AIM To develop demodulation methods with high anti-noise ability and high speed for data acquisition system inelectrical impedance multi-frequency and parameter tomography.
本文提出了一种基于数字调制和解调技术的电容式位移传感器的设计方法。
This paper presents a design method of capacitance displacement sensor based on digital synthesis technology.
本设计基于软件无线电的思想,使用软件的方法直接对短波信号进行处理,实现AM语音调制语音信号全数字解调。
In my design, signal is processed directly with software method based on software radio idea, which realizes the AM signal demodulation.
提出了一种在未知信号频率条件下的FSK信号数字化解调方法。
A digital demodulation method of the FSK Signal is presented when its frequency parameters are unknown.
针对衰落信道中广泛存在的多普勒频移现象,本文提出了一种MPSK信号数字化识别解调的方法。
A new method for digital identification and demodulation of MPSK signals is presented under the condition of the Doppler frequency shift of channel attenuation.
给出数字正交解调后输出I、Q两路信号的幅度一致性误差和相位正交性误差的测试方法和测试结果;
Realize digital orthogonal demodulation; the method and results of amplitude consistence and phase orthogonality of the I, Q signal have been given;
分析了信号数字调制的基本原理,提出一种基于信号瞬时特征参数的数字通信信号解调方法。
The principle of digital modulated signal is analyzed in this paper. Based on instant character parameters, a kind of digital communication signal demodulation method is established.
本文根据高码速率DQPSK遥测信号的特点,介绍了一种通过数字瞬时测频来完成对高码速率DQPSK信号解调的方法。
This paper presents a new algorithm used to demodulate high code rate DQPSK telemetry signal by digital frequency measurement.
提出了以基带解调器为核心的数字电视转发器的设计方法。
This paper puts forward the design method of DTV transposer using baseband demodulator as its core based on the analysis of its present status.
分析了数字视频信号MPEG2的帧结构、信道编译码方法、交织与解交织及64QAM调制与解调等关键技术。
The MPEG2 frame structure, error correcting encoding and decoding, interleave and deinterleave, and64 QAM modem are analyzed in detail.
利用数字化方法设计通信系统中的调制解调技术是实际应用中的一项重要技术。
Designed by digital modem communication system in the practical application of technology is an important technology.
深入研究了数字电视地面广播COFDM解调方案中的解映射软判决技术,提出了适用于该系统的信道状态信息CSI提取方法。
This paper investigates the soft decision of de-mapping technique in COFDM de-modulation scheme. It proposes a new method suitable for the scheme for extracting CSI from communication channel.
给出了基于多片高速数字信号处理器件TMS32 0c2 5实现数字化解调的原理框图,讨论了软硬件的实现方法,并给出了对8fsk信号的测试结果。
Its block diagram with the parallel high speed DSP TMS320C25 is presented. The realization methods for software and hardware have been discussed, with a typical example of 8fsk given.
给出了基于多片高速数字信号处理器件TMS32 0c2 5实现数字化解调的原理框图,讨论了软硬件的实现方法,并给出了对8fsk信号的测试结果。
Its block diagram with the parallel high speed DSP TMS320C25 is presented. The realization methods for software and hardware have been discussed, with a typical example of 8fsk given.
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