An Interference Cancellation Space-Time RAKE Receiver in Asynchronous Cooperative Communications Systems

Abstract:

Space-time two dimensional RAKE receiver was introduced into asynchronous and cooperative communication system, and a high-performance RAKE receiving algorithm was proposed. In this algorithm, the transmitting signals were estimated coarsely by traditional space-time rake receiver, then each multipath signal was reconstructed using the estimated result as well as the channel impulse response, and then eliminated successively from reception signals, so it can eliminate Inter Symbol Interference of receiver signals which generate by multipath fading, and the line of sight (LOS) component in the received signal was obtained, and finally, the space-time combination was carried out to the LOS component, and the spatial diversity was achieved. This algorithm can effectively reduce the bit error rate of the asynchronous cooperative communication system. Simulation result shows that the new algorithm can improve the performance of traditional space-time RAKE when SNR is higher than 5dB dramatically.

• Periodical: Applied Mechanics and Materials (Volumes 644-650)
• Pages: 4152-4156
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.644-650.4152
• Online since: September 2014
• Authors: Dong Wu Li*, Chang Xing Pei, Yun Liang Meng
• Keywords: Asynchronous, Cooperative Communications, Diversity Combine, Inter Symbol Interference, Space Time RAKE

References

[1] Wang Feng, Li Yongchao, Liaoguisheng. A new BLAST based on RAKE reception[J]. Journal of Xidian University(Nature Science Edition), 2011, 38（3）: 442-446.

[2] G. E. Bottomley, T. Ottosson, and Y. E. Wang, A generalized RAKE receiver for interference suppression [J], IEEE J. Sel. Areas Commun., 2009, vol. 18, no. 5, p.1536–1545.

DOI: 10.1109/49.864017

[3] S. Grant, K. Molnar, and G. Bottomley, Generalized RAKE receivers for MIMO systems [C], in Proc. IEEE 54th Vehicular Technology Conference, VTC Fall 2003, 2003, vol. 1 : 424–428.

DOI: 10.1109/vetecf.2003.1285052

[4] M. Siala, Maximum a posteriori decorrelating discrete-time RAKE receiver [J], Annals of Telecommunications, 2004, 59(3) : 374–411.

DOI: 10.1007/bf03179703

[5] H. Boujemaa and M. Siala, Rake receivers for direct sequence spread spectrum systems [J], Annals of Telecommun., 2011, vol. 56, no. 5, pp : 291–305.

[6] H. Boujemaa, BER performance analysis of the discrete time and the continuous time Rake receivers for the UMTS downlink[J], IEEE Trans. Wireless Commun., 2011, vol. 10, no. 7, pp : 900–909.

DOI: 10.1109/twc.2006.1618939

[7] D. Senaratne and Tellambura. Spatial Multipath Resolution for MIMO Systems [J], IEEE Wireless Communications Letters, 2012, 1(1) : 10-13.

DOI: 10.1109/wcl.2011.111211.110064

[8] Qiu cai Wang, Chao wei Yuan, Jin bo Zhang, etal. Frequency Domain DFE for Single-Carrier STBC Block Transmission [J], IEEE Communications LETTERS, 2013, 17(6) : 1108-1111.

DOI: 10.1109/lcomm.2013.043013.122889