Performance Analysis of Angle Modulated MQAM Transmission Techniques

We introduce a novel method of digital modulation with a high spectral efficiency, called the angle (exponentially) modulated m-ary quadrature amplitude modulation (EM-MQAM). The main advantage of EM-MQAM is an ability to transmit a multilevel 2-D MQAM constellation as a constant envelope signal. It...

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Bibliographic Details
Main Authors: Zaharov, V.V., Kokhanov, A.B.
Format: Conference Proceeding
Language:English
Subjects:
Amplitude modulation
AWGN channels
Bandwidth
Bit error rate
Constellation diagram
Data communication
Digital modulation
Fading
Performance analysis
Quadrature amplitude modulation
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Summary:We introduce a novel method of digital modulation with a high spectral efficiency, called the angle (exponentially) modulated m-ary quadrature amplitude modulation (EM-MQAM). The main advantage of EM-MQAM is an ability to transmit a multilevel 2-D MQAM constellation as a constant envelope signal. It makes EM-MQAM a preferred technique for application in multipath fading channel since no amplitude discrimination in the receiver is needed. The transmission bandwidth and BER performance of EM-MQAM have been analyzed. Despite of the fact that EM-MQAM requires as twice as much of the transmit bandwidth compared to the conventional MQAM, it provides reasonable trade-off between transmit bandwidth and BER performance. Furthermore, EM-MQAM requires just 1 dB of extra transmit power if the order of original MQAM increases fourfold.
DOI:10.1109/ISWPC.2007.342659