Startsida
Title:
Estimation of Phase Noise for QPSK Modulation over AWGN Channels
Author:
Florent Munier: Dept. of Signals and Systems (S2) and Microtechnology Centre at Chalmers (MC2) Chalmers University of Technology, Sweden
Eric Alpman: Dept. of Signals and Systems (S2) and Microtechnology Centre at Chalmers (MC2) Chalmers University of Technology, Sweden
Thomas Eriksson: Dept. of Signals and Systems (S2) and Microtechnology Centre at Chalmers (MC2) Chalmers University of Technology, Sweden
Arne Svensson: Dept. of Signals and Systems (S2) and Microtechnology Centre at Chalmers (MC2) Chalmers University of Technology, Sweden
Herbert Zirath: Dept. of Signals and Systems (S2) and Microtechnology Centre at Chalmers (MC2) Chalmers University of Technology, Sweden
Download:
Year:
2003
Conference:
GigaHertz 2003. Proceedings from the Seventh Symposium
Issue:
008
Article no.:
030
No. of pages:
6
Publication type:
Poster
Published:
2003-11-06
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet
Every oscillator used in bandpass communication suffers from an instability of their phase (a.k.a. phase noise) that; if left unaddressed; can lead to great degradation of the system performance. In this paper; we tackle the problem of minimising the effect of oscillator phase noise on the coherent detection of a quadrature phase shift keying (QPSK) modulation operating on an Additive White Gaussian Noise (AWGN) channel. The phase noise process is modeled as a Wiener-Levy (random walk) process. Our approach uses maximum likelihood (ML) estimation of phase noise. Thorough analysis and derivation for Decision Directed (DD); Non-Data Aided (NDA); used with and without symbol differential encoding; and pilot based estimators are presented. We compare these estimators with respect to their main features and evaluate their bit error rate (BER) performances throught simulations. Results show that for low signal to noise ratio (SNR) applications; the use of differential encoding along with the proposed DD or NDA estimator yields performances with an SNR penalty below the two dB imposed by the non coherent detection methods; while pilot based estimation using wiener interpolation makes it possible to detect a QPSK modulation with SNR penalty around two dB.
GigaHertz 2003. Proceedings from the Seventh Symposium
Author:
Florent Munier, Eric Alpman, Thomas Eriksson, Arne Svensson, Herbert Zirath
Title:
Estimation of Phase Noise for QPSK Modulation over AWGN Channels
References:
[1] Herbert Zirath; “Afront end chipset for a 60 GHz radio receiver;” in Proc. of the GigaHertz Symposium on Gigahertz Electronics. Chalmers; Mar. 2001.
[2] Christian Fager; MMIC FET Frequency Doublers and FMCW radar Transceivers; Licenciate thesis; Chalmers University of Technology; Goteborg; Sweden; Mar. 2001.
[3] G.J. Foschini and G Vannucci; “Characterizing filtered light waves corrupted by phase noise;” in IEEE Transactions on Information Theory. IEEE; nov 1988; vol. 34; pp. 1437–1448.
[4] L. Tomba; “On the effect of wiener phase noise in ofdm systems;” in IEEE Transactions on Communications. IEEE; May 1998; vol. 46; pp. 580–583.
[5] M. Moeneclaey H. Meyr and S.A. Fechtel; Digital Communication Receivers; John Wiley and sons; 1998.
[6] S.M Kay; Fundamentals of Statistical Signal Processing; Prentice Hall International; 1993.
[7] J. Roychowdhury A. Demir; A. Mehrotra; “Phase noise in oscillators: a unifying theory and numerical methods for characterization;” in IEEE Transactions on Circuits and Systems. IEEE; May 2000; vol. 47; pp. 655–674.
[8] J. G. Proakis; Digital Communications; McGraw Hill; 1995.
GigaHertz 2003. Proceedings from the Seventh Symposium
Author:
Florent Munier, Eric Alpman, Thomas Eriksson, Arne Svensson, Herbert Zirath
Title:
Estimation of Phase Noise for QPSK Modulation over AWGN Channels
Note: the following are taken directly from CrossRef
Citations:
No citations available at the moment