Multiple CFOs Compensation and BER Analysis for Cooperative Communication Systems

In cooperative communication systems, multiple carrier frequency offsets (MCFO) appear due to the different accuracy of the nodes' oscillators and Doppler spreads, which drastically degrades the performance of space-frequency block coded (SFBC) cooperative systems. In this paper, a MCFO compensation algorithm including modified SFBC decoder, minimum Euclidean distance decision criterion and interference reconstructing eliminator is proposed. Besides, the bit error ratio (BER) lower bound of cooperative communication systems with MCFO is theoretically derived. From the simulations, the correctness of our theoretical analysis can be validated, and it is also proved that the proposed compensation algorithm achieves good BER performance with a large range of MCFO.

[1]  Gregory W. Wornell,et al.  Cooperative diversity in wireless networks: Efficient protocols and outage behavior , 2004, IEEE Transactions on Information Theory.

[2]  Stephen G. Wilson,et al.  Digital Modulation and Coding , 1995 .

[3]  Xiang-Gen Xia,et al.  Signal Detection for Space-Frequency Coded Cooperative Communication System with Multiple Carrier Frequency Offsets , 2007, 2007 IEEE Wireless Communications and Networking Conference.

[4]  Gregory W. Wornell,et al.  An efficient protocol for realizing cooperative diversity in wireless networks , 2001, Proceedings. 2001 IEEE International Symposium on Information Theory (IEEE Cat. No.01CH37252).

[5]  Donald C. Cox,et al.  Robust frequency and timing synchronization for OFDM , 1997, IEEE Trans. Commun..

[6]  Guangxi Zhu,et al.  On Detection of Distributed STBC-OFDM system with Multiple Carrier Frequency Offsets , 2006, 2006 IEEE 63rd Vehicular Technology Conference.

[7]  Andrea J. Goldsmith,et al.  Capacity regions for wireless ad hoc networks , 2002, 2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333).

[8]  Patrick Mitran,et al.  Adaptive Frequency Synchronization for Collaborative Communication Systems , 2007, 27th International Conference on Distributed Computing Systems Workshops (ICDCSW'07).

[9]  Emre Telatar,et al.  Information-theoretic upper bounds on the capacity of large extended ad hoc wireless networks , 2005, IEEE Transactions on Information Theory.

[10]  Nevio Benvenuto,et al.  Multiple Frequency Offsets Estimation and Compensation for Cooperative Networks , 2007, 2007 IEEE Wireless Communications and Networking Conference.

[11]  Sudharman K. Jayaweera,et al.  V-BLAST-Based Virtual MIMO for Distributed Wireless Sensor Networks , 2007, IEEE Transactions on Communications.

[12]  Elza Erkip,et al.  User cooperation diversity. Part I. System description , 2003, IEEE Trans. Commun..

[13]  Vahid Tarokh,et al.  Design of an OFDM Cooperative Space-Time Diversity System , 2007, IEEE Transactions on Vehicular Technology.

[14]  Xiang-Gen Xia,et al.  Equalization in Space-Frequency Coded Cooperative Communication System with Multiple Frequency Offsets , 2007, 2007 International Symposium on Signals, Circuits and Systems.

[15]  Dheeraj Sreedhar,et al.  ICI-ISI Mitigation in Cooperative SFBC-OFDM with Carrier Frequency Offset , 2007, 2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications.

[16]  Ali Özgür Yilmaz,et al.  Cooperative diversity in carrier frequency offset , 2007, IEEE Communications Letters.

[17]  Patrick Mitran,et al.  On Bounds and Algorithms for Frequency Synchronization for Collaborative Communication Systems , 2008, IEEE Transactions on Signal Processing.

[18]  Dennis Goeckel,et al.  CTH15-4: Multiple Frequency Offset Compensation in Cooperative Wireless Systems , 2006, IEEE Globecom 2006.

[19]  Gregory W. Wornell,et al.  Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks , 2003, IEEE Trans. Inf. Theory.

[20]  Elza Erkip,et al.  User cooperation diversity. Part II. Implementation aspects and performance analysis , 2003, IEEE Trans. Commun..