移动无线电信道环境下的QMSK调制技术

IEEE Second Symposium on Communications and Vehicular Technology in the Benelux Pub Date : 1994-11-02 DOI:10.1109/SCVT.1994.574140

T. Javornik, G. Kandus

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引用次数: 0

摘要

分析了移动无线电信道中正交最小移位键控(QMSK)调制技术。通过计算机模拟得到了各种移动无线电信道所造成的失真，如瑞利衰落、高斯噪声、同信道干扰和多普勒频率，并绘制了误码率图。结果表明，在考虑高斯信道和共信道干扰的情况下，相干检测的QMSK信号具有与GMSK和/spl pi//4 QPSK信号相似的性能。在多普勒频移的瑞利衰落信道中，QMSK信号的性能远不如GMSK和/spl pi//4 QPSK信号。

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QMSK modulation technique in mobile radio channel environment

The quadrature minimum shift keying (QMSK) modulation technique is analysed in mobile radio channel. the BER, obtained by computer simulation, is plotted for various distortions caused by mobile radio channel such as: Rayleigh fading, Gaussian noise, cochannel interference and Doppler frequency. It is found out that the coherently detected QMSK signal has similar performance to GMSK and /spl pi//4 QPSK signals considering Gaussian channel and cochannel interference. The QMSK signal performance in the Rayleigh fading channel with Doppler frequency shift are much worse as GMSK and /spl pi//4 QPSK signal performance.

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IEEE Second Symposium on Communications and Vehicular Technology in the Benelux

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