Abstract
We investigate time delay and channel gain estimation for multipath fading code division multiple access (CDMA) signals using the second order divided difference filter (DDF). We consider the case of paths that are a fraction of chip apart, also knwon as closely spaced paths. Given the nonlinear dependency of the channel parameters on the received signals in multiuser/multipath scenarios, we show that the DDF achieves better performance than its linear counterparts. The DDF, which is a derivative-free Kalman filtering approach, avoids the errors associated with linearization in the conventional extended Kalman filter (EKF). The numerical results also show that the proposed DDF is simpler to implement, and more resilient to near-far interference in CDMA networks and is able to track closly spaced paths.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Gilhousen, H.F., et al.: On the capacity of a cellular CDMA system. IEEE Transactions on Vehicular Technology 40(2), 303–312 (1991)
Pickholtz, R.L., Milstein, L.B., Schilling, D.L.: Spread spectrum for mobile communications. IEEE Transactions on Vehicular Technology 40(2), 313–322 (1991)
Iltis, R.A., Mailaender, L.: An adaptive multiuser detector with joint amplitude and delay estimation. IEEE Journal on Select Areas Communications 12(5), 774–785 (1994)
Radovic, A.: An iterative near-far resistant algorithm for joint parameter estimation in asynchronous CDMA systems. In: Proceedings of 5th IEEE Intenational Symposium on Personal, Indoor, Mobile Radio Communications, vol. 1, pp. 199–203 (1994)
Ström, E.G., Parkvall, S., Miller, S.L., Ottersten, B.E.: Propagation delay estimation in asynchronous direct-sequence code-division multiple access systems. IEEE Transactions on Communications 44(1), 84–93 (1996)
Bensley, S.E., Aazhang, B.: Subspace-based channel estimation for code division multiple access communication systems. IEEE Transactions on Communications 44(8), 1009–1020 (1996)
Ström, E.G., Parkvall, S., Miller, S.L., Ottersten, B.E.: DS-CDMA synchronization in time-varying fading channels. IEEE Journal on Select Areas Communications 14(8), 1636–1642 (1996)
Latva-aho, M., Lilleberg, J.: Delay trackers for multiuser CDMA receivers. In: Proceedings of IEEE International Conference on Universal Personal Communications, pp. 326–330 (1996)
Caffery Jr, J.J., Stüber, G.L.: cOverview of radiolocation in CDMA cellular systems. IEEE Communication Magazine 36, 38–45 (1998)
Caffery Jr, J.J., Stüber, G.L.: Nonlinear Multiuser Parameter Estimation and Tracking in CDMA Systems. IEEE Transactions on Communications 48(12), 2053–2063 (2000)
Ström, E.G., Malmsten, F.: A maximum likelihood approach for estimating DS-CDMA multipath fading channels. IEEE Journal on Select Areas Communications 18(1), 132–140 (2000)
Bhashyam, S., Aazhang, B.: Multiuser channel estimation and tracking for long-code CDMA systems. IEEE Transactions on Communications 50(7), 1081–1090 (2002)
Kim, K.J., Iltis, R.A.: Joint detection and channel estimation algorithms for QS-CDMA signals over time-varying channels. IEEE Transactions on Communications 50(5), 845–855 (2002)
Lakhzouri, A., Lohan, E.S., Hamila, R., Renfors, M.: Extended Kalman Filter channel estimation for line-of-sight detection in WCDMA mobile positioning. EURASIP Journal on Applied Signal Processing 2003(13), 1268–1278 (2003)
Klee, U., Gehrig, T.: Kalman Filters for Time Delay of Arrival-Based Source Localization. EURASIP Journal on Applied Signal Processing 2006(1), 167 (2006)
Shunlan, L., Yong, M., Haiyun, Z.: Passive location by single observer with the Unscented Kalman Filter. In: IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technology for Wireless Communications, vol. 2, pp. 1186–1189 (2005)
Wan, E.A., Merwe, R.: Kalman Filtering and Neural Networks. In: Adaptive and Learning Systems for Signal Processing, Communications, and Control, pp. 221–280. Wiley, Chichester (2001)
Alfriend, K.T., Lee, D.-J.: Nonlinear Bayesian Filtering For Orbit Determination and Prediction. In: 6th US Russian Space Surveillance Workshop, St. Petersburg, Russia, pp. 22–26 (2005)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2009 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Ali, Z., Deriche, M.A., Landolsi, M.A. (2009). Closely Spaced Multipath Channel Estimation in CDMA Networks Using Divided Difference Filter. In: Ślęzak, D., Kim, Th., Chang, A.CC., Vasilakos, T., Li, M., Sakurai, K. (eds) Communication and Networking. FGCN 2009. Communications in Computer and Information Science, vol 56. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-10844-0_75
Download citation
DOI: https://doi.org/10.1007/978-3-642-10844-0_75
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-10843-3
Online ISBN: 978-3-642-10844-0
eBook Packages: Computer ScienceComputer Science (R0)