Title :
Performance of differentially detected π/4 DQPSK in the presence of IQ phase imbalance
Author :
Scarpa, M. ; Vogel, J. ; Stonick, J. ; Kiaei, S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA
Abstract :
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 which in the past were insignificant in full power designs, must be accounted for in the link budgets 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 an IQ phase imbalance in the receiver
Keywords :
AWGN; differential detection; digital radio; error statistics; phase shift keying; radio receivers; AWGN; BER; IQ phase imbalance; circuit level distortions; closed form expression; differential quadrature PSK; differentially detected π/4 DQPSK; low power receivers; system level performance; Amplitude modulation; Analog-digital conversion; Band pass filters; Baseband; Bit error rate; Circuits; Constellation diagram; Phase detection; Phase modulation; Quadrature phase shift keying;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.858834
