BER Analysis of STBC-OFDM Wireless Systems with RF Impairments and Imperfect Channel Estimation with Application to IEEE 802.16e

In this paper, we investigate the effects of RF impairments and imperfect channel estimation (ICE) on the performance of Orthogonal Frequency Division Multiplexing (OFDM) wireless systems with transmit diversity for Space-Time Block Codes (STBC) employing Nt : Nt ∈ (2, 3, 4) transmit antennas and one receive antenna in a Rayleigh fading environ- ment. The bit error rate (BER) expressions of the OSTBC-OFDM system is derived for each transmit-receive antenna configuration in the presence of phase noise and channel estimation errors. With emphasis on complex signal constellations, we further investigate the effect of doppler on the performance of OSTBC- OFDM for different code rates R :1 /2 ≤ R ≤ 1, including maximal-rate OSTBC codes. To illustrate the extent of system degradation due to these impairments on a proposed practical system, the presented results are verified through simulations by making use of the system parameters from the IEEE802.16e standard.

[1]  Jongho Kim.  Analysis of space-time block codes OFDM systems with the number of antennas and various mobile speeds , 2005, 2005 Asia-Pacific Microwave Conference Proceedings.

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

[3]  Hamid Jafarkhani.  A quasi-orthogonal space-time block code , 2001, IEEE Trans. Commun..

[4]  H.A. Suraweera,et al.  Alamouti Coded OFDM in Rayleigh Fast Fading Channels - Receiver Performance Analysis , 2005, TENCON 2005 - 2005 IEEE Region 10 Conference.

[5]  Ari Hottinen,et al.  Square-matrix embeddable space-time block codes for complex signal constellations , 2002, IEEE Trans. Inf. Theory.

[6]  Luca Reggiani,et al.  Least Squares Channel Estimation for IEEE 802.16e Systems Based on Adaptive Taps Selection , 2008, VTC Spring 2008 - IEEE Vehicular Technology Conference.

[7]  P. Das,et al.  Performance of OFDM Systems in Rayleigh Fading Channels with Phase Noise and Channel Estimation Errors , 2006, MILCOM 2006 - 2006 IEEE Military Communications conference.

[8]  A. Robert Calderbank,et al.  Space-time block coding for wireless communications: performance results , 1999, IEEE J. Sel. Areas Commun..

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

[10]  E. Masoud,et al.  Space-Time Block Coding for Wireless Communications , 2008 .

[11]  Le Chung Tran.  Complex Orthogonal Space-Time Processing in Wireless Communications , 2006 .

[12]  Douglas B. Williams,et al.  A space-time coded transmitter diversity technique for frequency selective fading channels , 2000, Proceedings of the 2000 IEEE Sensor Array and Multichannel Signal Processing Workshop. SAM 2000 (Cat. No.00EX410).

[13]  A. Robert Calderbank,et al.  Space-time codes for high data rate wireless communication: performance criteria in the presence of channel estimation errors, mobility, and multiple paths , 1999, IEEE Trans. Commun..

[14]  D. Petrovic,et al.  Intercarrier interference due to phase noise in OFDM - estimation and suppression , 2004, IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004.

[15]  Desmond P. Taylor,et al.  A Simple Transmit Diversity Technique for Wireless Communications , 2007 .

[16]  Xue-Bin Liang,et al.  Orthogonal designs with maximal rates , 2003, IEEE Trans. Inf. Theory.

[17]  Inkyu Lee,et al.  Space-time coded OFDM systems with four transmit antennas , 2004, IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004.

[18]  Frederick W. Vook,et al.  Transmit diversity and spatial multiplexing in four-transmit-antenna OFDM , 2003, IEEE International Conference on Communications, 2003. ICC '03..

[19]  Qing Wang,et al.  Design of BS transceiver for IEEE 802.16E OFDMA mode , 2008, 2008 IEEE International Conference on Acoustics, Speech and Signal Processing.

[20]  A. Yongacoglu,et al.  Performance of diversity systems with 2 and 4 transmit antennas , 2000, WCC 2000 - ICCT 2000. 2000 International Conference on Communication Technology Proceedings (Cat. No.00EX420).

[21]  John G. Proakis,et al.  Digital Communications , 1983 .