同时，由于采用了数字正交调制，从而有效地提高了镜频抑制。
At the same time, we refrain mirror frequency effectively with the method of digital quadrature modulation (DQM).
该产生器由DDWS技术双路基带信号产生器和正交调制器组成。
It is built up with a dual-channel based signal generator on DDWS and a quadrature modulator.
正交调制的目的是产生单边带RF激发脉冲，以避免激发镜像层面。
The purpose of quadrature modulation is to generate the SSB RF exciting pulse that avoids exciting it's mirror slice.
阐明了MRI系统中所使用的正交调制、正交解调、正交激发和正交接收的概念。
It is clearly clarified the conceptions of quadrature modulation, quadrature exciting, quadrature receiving, and quadrature demodulation in the MRI system.
中频部分主要由HFA3724正交调制解调器和基于MB1502的锁相频率合成电路等组成。
The intermediate frequency circuit includes QPSK modulation based on HFA3724, PLL circuit based on MB1502.
基于M进制正交调制的软比特输出特性，对不同编码条件下的M进制正交调制性能进行了仿真评估。
The performances of different coded M-ary orthogonal modulation are simulated and evaluated on the basis of the soft bits output of M-ary orthogonal modulation.
在数字正交调制原理的基础上，宽带信号的产生问题实际上转换为如何得到高采样率下的时域基带信号。
Based on the principle of digital orthogonal modulation, the generation question of wide-band signal is factually identical with how to generate base-band signal with high sampling in time domain.
基于施密特正交化的原理，在产生正交混沌载波的基础上，提出并实现了一种基于混沌的正交调制通信系统。
Based on the idea of the Schmidt orthogonalization and the orthogonal chaotic carriers being generated, a chaos-based quadrature modulation communication system is proposed and realized.
提出了一种将正交调制LFM信号产生系统的幅相误差映射到基带后，在数字域利用复系数FIR滤波器进行校正的方案。
The errors are classified according to their frequency. The amplitude and phase errors of the LFM signal generators using quadrature modulation technology are mapped into baseband.
分别实现了V．29信号基本调制解调过程，包括平方根升余弦滚降脉冲成形技术的滤波器实现，以及对信号的正交调制与解调过程。
Realizes V. 29 signal basic modulate and demodulate procedure which includes square root raised cosine rolling-off shaping filter and orthogonal channel signal modulator and demodulator.
分别实现了V．29信号基本调制解调过程，包括平方根升余弦滚降脉冲成形技术的滤波器实现，以及对信号的正交调制与解调过程。
Realizes V. 29 signal basic modulate and demodulate procedure which includes square root raised cosine rolling-off shaping filter and orthogonal channel signal modulator and demodulator.
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