Analysis of partial FFT demodulation for doppler distorted OFDM signals

Accurate time scale compensation is a problem of significance for underwater acoustic channels. Using our proposed partial FFT Demodulation technique, we consider two algorithms for fast and accurate data detection over time scale distorted channels. We present a theoretical analysis to characterize the performance of these algorithms and determine the optimal values of their key parameters. Our analysis supports the observed performance trends and validates the performance gains of partial FFT demodulation.

[1]  Urbashi Mitra,et al.  Partial FFT demodulation: A detection method for doppler distorted OFDM systems , 2010, 2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC).

[2]  Paul Hursky,et al.  Mitigation of intercarrier interference in OFDM systems over underwater acoustic channels , 2009, OCEANS 2009-EUROPE.

[3]  Milica Stojanovic.  A method for differentially coherent detection of OFDM signals on Doppler-distorted channels , 2010, 2010 IEEE Sensor Array and Multichannel Signal Processing Workshop.

[4]  I-Tai Lu,et al.  Parameter study of OFDM underwater communications system , 2000, OCEANS 2000 MTS/IEEE Conference and Exhibition. Conference Proceedings (Cat. No.00CH37158).

[5]  Urbashi Mitra,et al.  An improved blind adaptive MMSE receiver for fast fading DS-CDMA channels , 2001, GLOBECOM'01. IEEE Global Telecommunications Conference (Cat. No.01CH37270).

[6]  L. Freitag,et al.  This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination. IEEE JOURNAL OF OCEANIC ENGINEERING 1 Peer-Reviewed Technical Communication Multicarrier Communication Over Un , 2022 .

[7]  Milica Stojanovic,et al.  Adaptive Channel Estimation for Underwater Acoustic MIMO OFDM Systems , 2009, 2009 IEEE 13th Digital Signal Processing Workshop and 5th IEEE Signal Processing Education Workshop.

[8]  Urbashi Mitra,et al.  Data detection techniques for OFDM signals over Doppler-distorted channels , 2010, WUWNet '10.

[9]  Robert M. Gray,et al.  Toeplitz and Circulant Matrices: A Review , 2005, Found. Trends Commun. Inf. Theory.

[10]  H. Vincent Poor,et al.  Code-aided interference suppression for DS/CDMA communications. II. Parallel blind adaptive implementations , 1997, IEEE Trans. Commun..

[11]  Milica Stojanovic,et al.  MIMO OFDM over underwater acoustic channels , 2009, 2009 Conference Record of the Forty-Third Asilomar Conference on Signals, Systems and Computers.

[12]  Philip Schniter,et al.  Efficient communication over highly spread underwater acoustic channels , 2007, Underwater Networks.

[13]  Arnt-Børre Salberg,et al.  Doppler and frequency-offset synchronization in wideband OFDM , 2005, IEEE Transactions on Wireless Communications.

[14]  M. Stojanovic,et al.  Underwater Acoustic Communications: Design Considerations on the Physical Layer , 2008, 2008 Fifth Annual Conference on Wireless on Demand Network Systems and Services.