Title :
The effect of the imbalance in I and Q channels on differentially detected π/4 DQPSK
Author :
Constantin, Balan ; Losif, P. ; Florin, Popescu
Author_Institution :
Fac. of Electron. Eng., Mil. Tech. Acad., Bucharest, Romania
fDate :
6/23/1905 12:00:00 AM
Abstract :
Circuit level distortions, that can be largely ignored in full-power designs, must be accounted for in the link budget of low-power systems. The effect of circuit level distortions on system level performance is becoming an important issue in optimization of the design of low power receivers. We present an analysis that demonstrates and quantifies the effect of one such distortion. We present the influence in reception quality determined by the imbalance in I and Q channels for π/4 DQPSK
Keywords :
cellular radio; differential detection; digital radio; optimisation; quadrature phase shift keying; radio receivers; radio reception; π/4 DQPSK; I channels; Q channels; cellular radio; channel imbalance; circuit level distortions; differential detection; differentially encoded quadrature phase-shift keying; digital radio; link budget; low-power receivers; optimization; reception quality; system level performance; Band pass filters; Circuits; Constellation diagram; Data engineering; Digital modulation; Filtering; Low pass filters; Phase modulation; Power system analysis computing; Quadrature phase shift keying;
Conference_Titel :
Telecommunications in Modern Satellite, Cable and Broadcasting Service, 2001. TELSIKS 2001. 5th International Conference on
Conference_Location :
Nis
Print_ISBN :
0-7803-7228-X
DOI :
10.1109/TELSKS.2001.954893
