Performance evaluation of OFDM and single-carrier systems using frequency domain equalization and phase modulation

In this paper, we study the performance of the continuous phase modulation (CPM)-based orthogonal frequency division multiplexing (CPM-OFDM) system. Also, we propose a CPM-based single-carrier frequency domain equalization (CPM-SC-FDE) structure for broadband wireless communication systems. The proposed structure combines the advantages of the low complexity of SC-FDE, in addition to exploiting the channel frequency diversity and the power efficiency of CPM. Both the CPM-OFDM system and the proposed system are implemented with FDE to avoid the complexity of the equalization. Two types of frequency domain equalizers are considered and compared for performance evaluation of both systems; the zero forcing (ZF) equalizer and the minimum mean square error (MMSE) equalizer. Simulation experiments are performed for a variety of multipath fading channels. Simulation results show that the performance of the CPM-based systems with multipath fading is better than their performance with single path fading. The performance over a multipath channel is at least 5 and 12 dB better than the performance over a single path channel, for the CPM-OFDM system and the proposed CPM-SC-FDE system, respectively. The results also show that, when CPM is utilized in SC-FDE systems, they can outperform CPM-OFDM systems by about 5 dB. Copyright © 2010 John Wiley & Sons, Ltd.

[1]  David Falconer,et al.  Frequency domain equalization for single-carrier broadband wireless systems , 2002, IEEE Commun. Mag..

[2]  Masoud Salehi,et al.  Communication Systems Engineering , 1994 .

[3]  John G. Proakis,et al.  Digital Signal Processing: Principles, Algorithms, and Applications , 1992 .

[4]  Yang Liu,et al.  A New Coding Scheme in SC-FDE , 2006, 2006 International Conference on Wireless Communications, Networking and Mobile Computing.

[5]  Yang Liu,et al.  Comparison of Spectral Efficiency for OFDM and SC-FDE under IEEE 802.16 Scenario , 2006, 11th IEEE Symposium on Computers and Communications (ISCC'06).

[6]  Yung-Lyul Lee,et al.  Peak-to-average power ratio in MIMO-OFDM systems using selective mapping , 2003, IEEE Communications Letters.

[7]  Seung Hee Han,et al.  An overview of peak-to-average power ratio reduction techniques for multicarrier transmission , 2005, IEEE Wireless Communications.

[8]  Davide Dardari,et al.  A theoretical characterization of nonlinear distortion effects in OFDM systems , 2000, IEEE Trans. Commun..

[9]  Said Esmail El-Khamy,et al.  Peak-to-average power ratio reduction in space-time block coded multi-input multi-output orthogonal frequency division multiplexing systems using a small overhead selective mapping scheme , 2009, IET Commun..

[10]  Y. Tsai,et al.  Orthogonal frequency division multiplexing with phase modulation and constant envelope design , 2005, MILCOM 2005 - 2005 IEEE Military Communications Conference.

[11]  Ramjee Prasad,et al.  OFDM for Wireless Multimedia Communications , 1999 .

[12]  R.W. Brodersen,et al.  Constant envelope multicarrier modulation: performance evaluation AWGN and fading channels , 2005, MILCOM 2005 - 2005 IEEE Military Communications Conference.

[13]  Rui Dinis,et al.  On frequency-domain equalization and diversity combining for broadband wireless communications , 2003, IEEE Trans. Commun..

[14]  Paolo Banelli,et al.  Effects of HPA nonlinearity on frequency multiplexed OFDM signals , 2001, IEEE Trans. Broadcast..

[15]  J. Zeidler,et al.  Constant envelope OFDM phase modulation: spectral containment, signal space properties and performance , 2004, IEEE MILCOM 2004. Military Communications Conference, 2004..

[16]  R. Kalbasi,et al.  Single-carrier frequency domain equalization , 2008, IEEE Signal Processing Magazine.

[17]  James R. Zeidler,et al.  Constant Envelope OFDM , 2008, IEEE Transactions on Communications.

[18]  Paolo Banelli,et al.  Theoretical analysis and performance of OFDM signals in nonlinear fading channels , 2003, IEEE Trans. Wirel. Commun..

[19]  Yue Wang,et al.  Cyclic prefixed single carrier transmission in ultra-wideband communications , 2006, IEEE Transactions on Wireless Communications.

[20]  Said Esmail El-Khamy,et al.  A Simple Selective Mapping Algorithm for the Peak to Average Power Ratio in Space Time Block Coded MIMO-OFDM Systems , 2008, HPCNCS.

[21]  Hsinying Liang,et al.  Combined Selective Mapping and Binary Cyclic Codes for PAPR Reduction in OFDM Systems , 2007, IEEE Transactions on Wireless Communications.

[22]  Hikmet Sari,et al.  Transmission techniques for digital terrestrial TV broadcasting , 1995, IEEE Commun. Mag..