oqpsk meaning in English
交错四相相移键控
Examples
- Performance analysis of soft - decision decoding in demodulation of oqpsk signals
解调中实现对信号纠错的分析与应用 - Ijf - oqpsk is actually to modulate the ijf codes by the offset quadrature phase shift keying
Ijf ? oqpsk实际上是对ijf信号再进行正交四相相移键控的调制技术。 - We have designed a new type of ijf code to reduce the envelope fluctuation , and have also got the reduced envelope fluctuation ijf - oqpsk . it has faster roll off of the power spectrum and lower energy of band out
本文设计了一种能够抑制包络起伏型的ijf信号码型，并相应地得到了抑制包络起伏型的ijf ? oqpsk ，它具有更快的功率谱滚降特性和更好的相位路径。 - By theory and practice simulation , the several types of constant envelope modulation techniques are analyzed and compared , including theirs modulation principle , phase path , the modulated wave envelope , power spectrums , error bit rate and the influence of its power spectrums of the band - limited and non - linear , etc . especially we have researched the ijf - oqpsk modulation technique , and the performance of its inter - symbol interference and time jitter free , and its strongly resisting of spectral spreading
结合理论和实验仿真结果，分析讨论了卫星通信中的各种恒包络调制技术，对它们的调制原理，相位路径，已调波包络，功率谱密度，误码性能，以及带限非线性信道对其功率谱的影响等方面都作了研究和比较。特别研究了ijf ? oqpsk在消除码间干扰和定时抖动方面的性能及其优良的旁瓣特性和抑制频谱扩展特性。 - On the basis of the third kind structure ( the modulator in simulative field ) , the paper gave out a method to realize the software radio digital hardware modulator which can perform the function of ask , psk , dpsk , mask , qpsk , dqpsk , qam , oqpsk modulations , using the apparatus of dsp and cpld . the test showed that the modulator can meet the request of system design
并以第三种结构的数学模型(模拟域的正交调制模型)为基础，以dsp和cpld器件为核心，进行了硬件电路设计，实现了基于软扩频系统的软件无线电数字硬件调制平台，实现了多种数字调制方式，其中包括ask ， psk ， dpsk ， mask ， qpsk ， dqpsk ， qam ， oqpsk调制方式。