ICI reduction through shaped OFDM in coded MIMO-OFDM systems

[Abstract]: The default pulse shaping filter in the conventional multiple-input and multiple-output (MIMO) based orthogonal frequency division multiplexing (OFDM) system is a rectangular function, which unfortunately is highly sensitive to frequency synchronization errors and the Doppler spread. Shaped OFDM is able to considerably alleviate the effect of inter-carrier interference (ICI) as well as reduce the out-of-band frequency leak. In this paper, we study various pulse shaping functions and investigate their efficacy for reducing the ICI in the space-time block coded MIMO-OFDM system. We compare a new shaping pulse termed harris-Moerder pulse with several other popular Nyquist pulses such as the raised-cosine pulse and better than raised-cosine pulse. Our simulation results confirm that pulse shaping using a suitable shaping function other than the default rectangular one can alleviate ICI and thus achieve better bit error rate (BER) performance. Furthermore, it is demonstrated that the harris-Moerder shaping pulse is the most successful one in suppressing ICI.

[1]  Marc Moeneclaey,et al.  BER sensitivity of OFDM systems to carrier frequency offset and Wiener phase noise , 1995, IEEE Trans. Commun..

[2]  Hebatallah M. Mourad,et al.  Reducing ICI in OFDM Systems Using a Proposed Pulse Shape , 2007, Wirel. Pers. Commun..

[3]  Reinaldo A. Valenzuela,et al.  V-BLAST: an architecture for realizing very high data rates over the rich-scattering wireless channel , 1998, 1998 URSI International Symposium on Signals, Systems, and Electronics. Conference Proceedings (Cat. No.98EX167).

[4]  Emre Telatar,et al.  Capacity of Multi-antenna Gaussian Channels , 1999, Eur. Trans. Telecommun..

[5]  Jean Armstrong,et al.  Analysis of new and existing methods of reducing intercarrier interference due to carrier frequency offset in OFDM , 1999, IEEE Trans. Commun..

[6]  Fred Harris,et al.  Advantage and implementation considerations of shaped OFDM signals , 2003, The Thrity-Seventh Asilomar Conference on Signals, Systems & Computers, 2003.

[7]  David Gesbert,et al.  From theory to practice: an overview of MIMO space-time coded wireless systems , 2003, IEEE J. Sel. Areas Commun..

[8]  Gregory E. Bottomley,et al.  Jakes fading model revisited , 1993 .

[9]  Siavash M. Alamouti,et al.  A simple transmit diversity technique for wireless communications , 1998, IEEE J. Sel. Areas Commun..

[10]  Kareem E. Baddour,et al.  Autoregressive modeling for fading channel simulation , 2005, IEEE Transactions on Wireless Communications.

[11]  W. Weibull.  A Statistical Distribution Function of Wide Applicability , 1951 .

[12]  J.E. Mazo,et al.  Digital communications , 1985, Proceedings of the IEEE.

[13]  Andrea M. Tonello,et al.  Improved Nyquist pulses , 2004, IEEE Communications Letters.

[14]  Norman C. Beaulieu,et al.  Improved BER performance in OFDM systems with frequency offset by novel pulse-shaping , 2004, IEEE Global Telecommunications Conference, 2004. GLOBECOM '04..

[15]  Wei Xiang,et al.  Pulse Shaping in MIMO COFDM over Rayleigh Fading Channels , 2009, 2009 Fifth International Conference on Wireless and Mobile Communications.

[16]  Reinaldo A. Valenzuela,et al.  Detection algorithm and initial laboratory results using V-BLAST space-time communication architecture , 1999 .

[17]  A. Robert Calderbank,et al.  Space-Time block codes from orthogonal designs , 1999, IEEE Trans. Inf. Theory.

[18]  Helmut Boelcskei.  Efficient design of pulse-shaping filters for OFDM systems , 1999, Optics & Photonics.

[19]  Ramjee Prasad,et al.  OFDM for Wireless Communications Systems , 2004 .

[20]  L. Franks,et al.  Further Results on Nyquist's Problem in Pulse Transmission , 1968 .

[21]  W. C. Jakes,et al.  Microwave Mobile Communications , 1974 .

[22]  Helmut Bölcskei,et al.  An overview of MIMO communications - a key to gigabit wireless , 2004, Proceedings of the IEEE.

[23]  Chris Dick,et al.  An Improved Square-Root Nyquist Shaping Filter , 2005 .

[24]  H. Nikookar,et al.  Frequency offset sensitivity reduction of multicarrier transmission by waveshaping , 2000, 2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488).

[25]  Georgios B. Giannakis,et al.  Space-time coding for broadband wireless communications , 2003, Wirel. Commun. Mob. Comput..

[26]  A. Robert Calderbank,et al.  Space-Time Codes for High Data Rate Wireless Communications : Performance criterion and Code Construction , 1998, IEEE Trans. Inf. Theory.

[27]  Ralf R. Müller,et al.  MIMO channel modeling and the principle of maximum entropy , 2005, IEEE Transactions on Information Theory.

[28]  Sofiène Affes,et al.  Optimum Pulse Shaping for OFDM/BFDM Systems Operating in Time Varying Multi-Path Channels , 2007, IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference.

[29]  Geoffrey Ye Li,et al.  Broadband MIMO-OFDM wireless communications , 2004, Proceedings of the IEEE.

[30]  Nicolae Dumitru Alexandru,et al.  ICI Reduction in OFDM Systems Using Phase Modified Sinc Pulse , 2010, Wirel. Pers. Commun..

[31]  Gerard J. Foschini,et al.  Layered space-time architecture for wireless communication in a fading environment when using multi-element antennas , 1996, Bell Labs Technical Journal.

[32]  Norman C. Beaulieu,et al.  Communication Theory Analysis of the effects of Nyquist pulse-shaping on the performance of OFDM systems with carrier frequency offset , 2009, Eur. Trans. Telecommun..

[33]  Vinko Erceg,et al.  Channel Models for Fixed Wireless Applications , 2001 .

[34]  Anass Benjebbour,et al.  Comparison of ordered successive receivers for space-time transmission , 2001, IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211).

[35]  Norman C. Beaulieu,et al.  Reduced ICI in OFDM systems using the "better than" raised-cosine pulse , 2004, IEEE Communications Letters.

[36]  Norman C. Beaulieu,et al.  A "better than" Nyquist pulse , 2001, IEEE Communications Letters.