Independent component analysis based QAM receiver
Abbreviated Journal Title
Digit. Signal Prog.
QAM demodulation; carrier phase recovery; direct conversion receiver; superheterodyne receiver; blind separation of source signals; independent component analysis; I/Q mismatch; Engineering, Electrical & Electronic
For emerging wireless data applications in 5.8 GHz frequency band, carrier phase extraction and I/Q mismatch are challenging parts of the receiver design. This paper discusses a receiver architecture for detection of QAM signals that is well suited for wireless data applications. The architecture does not require estimation of the received signal phase and can be used in both superheterodyne and direct conversion approaches. A simplified independent component analysis (SICA) signal processing technique is developed and used to separate the components in the I and Q branches of the receiver. It is demonstrated that the proposed receiver is robust with respect to amplitude and phase mismatch of the local oscillator. The performance of the SICA QAM receiver architecture is successfully illustrated through computer-based simulations. (C) 2003 Elsevier Inc. All rights reserved.
Digital Signal Processing
"Independent component analysis based QAM receiver" (2004). Faculty Bibliography 2000s. 4506.