Title :
Correction of transmitter gain and phase errors at the receiver
Author :
Çetin, Ediz ; Kale, Izzet ; Morling, Richard C S
Author_Institution :
Dept. of Electron. Syst., Univ. of Westminster, London, UK
Abstract :
This paper explores the benefits of compensating transmitter gain and phase imbalances in the receiver for quadrature communication systems. It is assumed that the gain and phase imbalances are introduced at the transmitter only. A simple non-data aided DSP algorithm is used at the receiver to compensate for the imbalances. Computer simulation has been performed to study a coherent QPSK communication system.
Keywords :
FIR filters; adaptive filters; adaptive signal processing; error compensation; error correction; filtering theory; least mean squares methods; quadrature phase shift keying; radio receivers; radio transmitters; DSP algorithm; adaptive FIR filters; blind LMS-based adaptive algorithm; coherent QPSK communication system; gain imbalances; phase imbalances; quadrature communication systems; receiver; transmitter gain error correction; transmitter phase error correction; Baseband; Constellation diagram; Degradation; Digital signal processing; Equations; Error correction; Frequency; Performance gain; Quadrature phase shift keying; Transmitters;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010401
