Weitere Artikel dieser Ausgabe durch Wischen aufrufen
In this paper, space-time two dimensional RAKE receiver was introduced into the asynchronous cooperative communication systems, and a high-performance RAKE receiving algorithm was proposed. Firstly, the transmitted signal was estimated by traditional space-time RAKE receiver, and then, decision feedback technique was investigated into the new algorithm, where each multipath component in the received signal was composed using the estimated results of the transmitted signal and then cancelled successively from the received signal, so the inter symbol interference in the received signal which was generated by the multipath fading channel was eliminated, and the line of sight (LOS) component in the received signal was obtained. Finally, the LOS component was combined together by the space-time block code combining rule to obtain the spatial diversity gain. Based on that, the iterative decision feedback architecture was further employed, where one stage stands for the process from multipath components reconstitution to space time combination, and the performance of the new scheme can be improved effectively by the multiple decision feedback stages. Computer simulations show that the new algorithm can improve the performance of traditional space-time RAKE dramatically when SNR is higher than 5 dB in asynchronous cooperative communication systems.
Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten
Sie möchten Zugang zu diesem Inhalt erhalten? Dann informieren Sie sich jetzt über unsere Produkte:
Nazari, B., & Jamalipour, A. (2013). Cooperative communication with asymmetric channel state information: A contract theoretic modeling approach. IEEE Journals & Magazines, 10(1), 31–43.
Suzuki, Y., Kudoh, E., & Ogose, S. (2000). DS-CDMA RAKE receiver with time-window control loop (TWCL) in multipath fading environment. IEEE Transactions on Vehicular Technology., 49(1), 167–172. CrossRef
Wang, F., Li, Y., & Liao, G. S. (2011). A new BLAST based on RAKE reception. Journal of Xidian University(Nature Science Edition), 38(3), 442–446.
Bottomley, G. E., Ottosson, T., & Wang, Y. E. (2009). A generalized RAKE receiver for interference suppression. IEEE Journal Selected Areas in Communications, 18(5), 1536–1545.
Grant, S., Molnar, K., & Bottomley, G. (2003). Generalized RAKE receivers for MIMO systems. In Proceedings IEEE 54th Vehicular Technology Conference, VTC Fall 2003, 1, (pp 424–428).
Siala, M. (2004). Maximum a posteriori decorrelating discrete-time RAKE receiver. Annals of Telecommunications, 59(3), 374–411.
Boujemaa, H., & Siala, M. (2011). Rake receivers for direct sequence spread spectrum systems. Annals of Telecommunications, 56(5), 291–305.
Boujemaa, H. (2011). BER performance analysis of the discrete time and the continuous time Rake receivers for the UMTS downlink[J]. IEEE Transactions Wireless Communications, 10(7), 900–909.
Senaratne, D., & Tellambura, (2012). Spatial multipath resolution for MIMO systems. IEEE Wireless Communications Letters, 1(1), 10–13. CrossRef
Wang, Q., Yuan, C., Zhang, J., et al. (2013). Frequency domain DFE for single-carrier STBC block transmission. IEEE Communications Letters, 17(6), 1108–1111. CrossRef
Deng, L., & Kawamura, T. (2012). Comparative study of open-loop transmit diversity schemes with four antennas in DFT-precoded OFDMA , IEEE International Communications Conference, (ICC), NewYork USA, (pp 513–518).
Al-Dhahir, N. (2001). Single-carrier frequency-domain equalization for space-time block-coded transmissions over frequency-selective fading channels. IEEE Communication Letters, 5(7), 304–306. CrossRef
Morelli, M., Sanguinetti, L., & Mengali, U. (2005). Channel estimation for adaptive frequency-domain equalization. IEEE Transactions Wireless Communications, 4(11), 2508–2518. CrossRef
- Space-Time Two Dimensional RAKE Receiver in Cooperative Communications Systems with Interference Cancellation Technique
- Springer US