Title :
A novel adaptive phase noise compensation scheme for communication receivers
Author :
Zhao, Liang ; Namgoong, Won
Author_Institution :
Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
The phase noise (PHN) of the local oscillator affects the overall receiver performance, especially when a noisier oscillator is chosen to lower the receiver cost. A novel PHN compensation method is proposed. It uses the information provided by an additional signal path that is added with small hardware overhead to estimate the PHN better. A Wiener smoothing filter can then be employed to obtain the minimum mean-squared error (MMSE) estimate of the PHN. Adaptive schemes are also presented using the least-mean-square (LMS) algorithm and recursive-least-square (RLS) algorithm. Simulations of a 64-QAM receiver show that the proposed method can improve the receiver performance significantly.
Keywords :
Wiener filters; adaptive estimation; compensation; least mean squares methods; phase noise; quadrature amplitude modulation; receivers; recursive estimation; smoothing methods; telecommunication services; 64-QAM receiver; LMS algorithm; MMSE estimate; RLS algorithm; Wiener filter; Wiener smoothing filter; adaptive phase noise compensation scheme; communication receivers; least-mean-square algorithm; local oscillator; minimum mean-squared error estimate; phase noise estimation; recursive-least-square algorithm; signal path; Adaptive filters; Baseband; Costs; Degradation; Least squares approximation; Local oscillators; Phase noise; Resonance light scattering; Smoothing methods; Wiener filter;
Conference_Titel :
Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE
Print_ISBN :
0-7803-7974-8
DOI :
10.1109/GLOCOM.2003.1258640
