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Effects of LO Phase and Amplitude Imbalances and Phase Noise on M -QAM Transceiver Performance

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2 Author(s)
Zhenqi Chen ; Auburn Univ., Auburn, AL, USA ; Fa Foster Dai

This paper presents a rigorous analytical model for analyzing the effects of local oscillator output imperfections such as phase/amplitude imbalances and phase noise on M -ary quadrature amplitude modulation (M-QAM) transceiver performance. A closed-form expression of the error vector magnitude (EVM) and an analytic expression of the symbol error rate (SER) are derived considering a single-carrier linear transceiver link with additive white Gaussian noise channel. The proposed analytical model achieves a good agreement with the simulation results based on the Monte Carlo method. The proposed QAM imperfection analysis model provides an efficient means for system and circuit designers to analyze the wireless transceiver performance and specify the transceiver block specifications.

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Industrial Electronics, IEEE Transactions on  (Volume:57 ,  Issue: 5 )