Abstract
Block-based transceivers are widely used in wireless communication systems, mostly due to their well-defined structure and blockwise encoding. Interblock interference caused by superpositions of delayed signal copies is among their main physical-layer challenges, which is commonly eliminated with redundancy between adjacent data-blocks. Besides, channel equalization is also employed to further mitigate multipath channel interferences. The chosen amount of redundancy, however, may be overestimated, which opens an opportunity for reduced-redundancy superfast transceivers, whose key features include high spectral efficiency and low computational cost. Although superfast approaches aim at low complexity, proper equalizer-coefficient design and update procedures are still very intricate tasks, and most approaches are rather computationally cumbersome. This paper addresses such problem by proposing a new design strategy for reduced-redundancy block-based transceivers, which provides semi-blind equalization with data-selective update, in addition to the possibility of using redundant parallel equalizer structures, which are based on the use of fast Fourier transforms and one-tap equalizers. Simulation results indicate that the proposed methodology is effective and also able to achieve a performance comparable to what is obtained with state-of-the-art techniques, depending on the target application.
Similar content being viewed by others
References
A.N. Akansu, P. Duhamel, X.M. Lin, M. de Courville, Orthogonal transmultiplexers in communication: a review. IEEE Trans. Signal Process. 46(4), 979–995 (1998)
J. Ayadi, L. Deneire, D.T.M. Slock, Channel-based blind multichannel identification without order overestimation problems. In 13th International Conference on Digital Signal Processing, (1997), pp. 123–126
S. Barbarossa, A. Scaglione, Blind equalization using cost function matched to the signal constellation. In 31st Asilomar Conference on Signals, Systems, and Computers, (1997), pp. 550–554
Y.-H. Chung, S.-M. Phoong, Low complexity zero-padding zero-jamming DMT systems. In 14th European Signal Processing Conference, (2006), pp. 1–5
R.C. de Lamare, P.S.R. Diniz, Set-Membership Adaptive Algorithms based on Time-Varying Error Bounds for CDMA Interference Suppression. Cornell University Library, arXiv:1301.0097 (2013)
P.S.R. Diniz, M.V.S. Lima, W.A. Martins, Semi-blind data-selective algorithms for channel equalization. In International Symposium on Circuits and Systems, (2008), pp. 53–56
P.S.R. Diniz, Adaptive Filtering: Algorithms and Practical Implementation (Springer, New York, 2008)
P.S.R. Diniz, E.A.B. da Silva, S.L. Netto, Digital Signal Processing: Systems Analysis and Design (Cambridge University Press, Cambridge, 2010)
P.S.R. Diniz, W.A. Martins, M.V.S. Lima, Block Transceivers: OFDM and Beyond (Synthesis Lectures on Communications) (Morgan & Claypool Publishers, San Rafael, 2012)
D. Falconer, S.L. Ariyavisitakul, A. Benyamin-Seeyar, B. Eidson, Frequency domain equalization for single-carrier broadband wireless systems. IEEE Commun. Mag. 40(4), 58–66 (2002)
J.F. Galdino, J.A. Apolinario, M.L.R. de Campos, A set-membership NLMS algorithm with time-varying error bound. In IEEE International Symposium on Circuits and Systems, Island of Kos, (2006), pp. 4–280
C.M.G. Gussen, R.S. Chaves, P.S.R. Diniz, W.A. Martins, Doppler effects on transceivers with reduced redundancy. In Proceedings of the IEEE International Conference on Digital Signal Processing, (2015), pp. 388–392
L. He, M.G. Amin, C. Reed Jr., R.C. Malkemes, A hybrid adaptive blind equalization algorithm for QAM signals in wireless communications. IEEE Trans. Signal Process. 52(7), 2058–2069 (2004)
T. Hwang, C. Yang, G. Wu, S. Li, G.Y. Li, OFDM and its wireless applications: a survey. IEEE Trans. Veh. Technol. 58(4), 1673–1694 (2008)
T. Kailath, A.H. Sayed, Displacement structure: theory and applications. SIAM Rev. 37(3), 297–386 (1995)
C. Kim, Post-OFDM wireless communications. In Proceedings of the IEEE Global Communications Conference (GLOBECOM), (2015), pp. 1–6
C.T. Lam, D.D. Falconer, F. Danilo-Lemoine, R. Dinis, Channel estimation for SC-FDE systems using frequency domain multiplexed pilots. In Vehicular Technology Conference, (2006), pp. 1–5
M.V.S. Lima, T.N. Ferreira, W.A. Martins, P.S.R. Diniz, Sparsity-aware data-selective adaptive filters. IEEE Trans. Signal Process. 62(17), 4557–4572 (2014)
M.V.S. Lima, P.S.R. Diniz, Steady-state MSE performance of the set-membership affine projection algorithm. Circuits Syst. Signal Process. 32(4), 1811–1837 (2013)
Y.P. Lin, S.M. Phoong, P.P. Vaidyanathan, Filter Bank Transceivers for OFDM and DMT Systems (Cambridge University Press, New York, 2010)
Y.P. Lin, S.M. Phoong, Minimum redundancy for ISI free FIR filterbank transceivers. IEEE Trans. Signal Process. 50(4), 842–853 (2002)
D.J.C. MacKay, Information Theory, Inference, and Learning Algorithms (Cambridge University Press, New York, 2002)
W.A. Martins, P.S.R. Diniz, Block-based decision-feedback equalizers with reduced redundancy. In Proceedings of the 20th European Signal Processing Conference (EUSIPCO-2012), (2012), pp. 56–60
W.A. Martins, P.S.R. Diniz, Pilot-aided designs of memoryless block equalizers with minimum redundancy. In International Symposium on Circuits and Systems, (2010), pp. 275–279
W.A. Martins, M.V.S. Lima, P.S.R. Diniz, Semi-blind data-selective equalizers for QAM. In IEEE 9th Workshop on Signal Processing Advances in Wireless Communications, (2008), pp. 501–505
W.A. Martins, P.S.R. Diniz, Block-based transceivers with minimum redundancy. IEEE Trans. Signal Process. 58(3), 1321–1333 (2010)
W.A. Martins, P.S.R. Diniz, Suboptimal linear MMSE equalizers with minimum redundancy. IEEE Signal Process. Lett. 17(4), 387–390 (2010)
W.A. Martins, P.S.R. Diniz, Memoryless block transceivers with minimum redundancy based on Hartley transforms. Signal Process. 91(2), 240–251 (2011)
W.A. Martins, P.S.R. Diniz, LTI transceivers with reduced redundancy. IEEE Trans. Signal Process. 60(2), 766–780 (2012)
B. Muquet, Z. Wang, G.B. Giannakis, M. de Courville, P. Duhamel, Cyclic prefixing or zero padding for wireless multicarrier transmissions? IEEE Trans. Commun. 50(12), 2136–2148 (2002)
V.Y. Pan, Structured Matrices and Polynomials: Unified Superfast Algorithms (Springer, New York, 2001)
F. Pancaldi, G.M. Vitetta, R. Kalbasi, N. Al-Dhahir, M. Uysal, H. Mheidat, Single-carrier frequency domain equalization. IEEE Signal Process. Mag. 25(5), 37–56 (2008)
S.U.H. Qureshi, Adaptive equalization. Proc. IEEE 73(9), 1349–1387 (1985)
C.B. Ribeiro, M.L.R. De Campos, P.S.R. Diniz, A new approach for channel equalization using Wiener filtering. In Global Telecommunications Conference, (2001), pp. 290–294
A. Scaglione, G.B. Giannakis, S. Barbarossa, Redundant filterbank precoders and equalizers. II. Blind channel estimation, synchronization, and direct equalization. IEEE Trans. Signal Process. 47(7), 2007–2022 (1999)
S. Trautmann, N.J. Fliege, Perfect equalization for DMT systems without guard interval. IEEE J. Sel. Areas Commun. 20(5), 987–996 (2002)
L.R. Vega, C.G. Galarza, Capacity-approaching block-based transceivers with reduced redundancy. Digit. Signal Process. 19(2), 340–359 (2009)
Z. Wang, X. Ma, G.B. Giannakis, OFDM or single-carrier block transmissions? IEEE Trans. Commun. 52(3), 380–394 (2004)
S. Werner, P.S.R. Diniz, Set-membership affine projection algorithm. IEEE Signal Process. Lett. 8(8), 231–235 (2001)
H. Zhao, X. Zeng, J. Zhang, T. Li, Nonlinear adaptive equalizer using a pipelined decision feedback recurrent neural network in communication systems. IEEE Trans. Commun. 58(8), 2193–2198 (2010)
H. Zhao, X. Zeng, X. Zhang, J. Zhang, Y. Liu, T. Wei, An adaptive decision feedback equalizer based on the combination of the FIR and FLNN. Digit. Signal Process. 21(6), 679–689 (2011)
H. Zhao, J. Zhang, Adaptively combined FIR and functional link artificial neural network equalizer for nonlinear communication channel. IEEE Trans. Neural Netw. 20(4), 665–674 (2009)
H. Zhao, Z. Zheng, \(L_{0}\) norm constraint set-membership affine projection algorithm with coefficient vector reuse. Electron. Lett. 52(7), 560–562 (2016)
Acknowledgments
This work was made possible through grants from CNPq, Capes, Fapeam, and Faperj, which are Brazilian research councils.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
de Freitas, M.L., Martins, W.A., de Lima Filho, E.B. et al. New Designs for Reduced-Redundancy Transceivers. Circuits Syst Signal Process 36, 2075–2101 (2017). https://doi.org/10.1007/s00034-016-0400-x
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00034-016-0400-x