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BER of differentially detected π/4 DQPSK in the presence of quadrature gain imbalance

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4 Author(s)
Scarpa, M. ; Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA ; Vogel, J. ; Stonick, J. ; Kiaei, S.

The effect of circuit level distortions on system level performance is becoming an important issue in optimizing the design of low power receivers. Circuit level distortions that can be largely ignored in full power designs, must be accounted for in the link budget of low power systems. In this paper, we present an analysis that demonstrates and quantifies the effect of one such distortion. We present a closed form expression for the BER of differentially detected π/4 DQPSK in the presence of AWGN and distorted by a quadrature gain imbalance in the receiver

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Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE

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