Detection scheme for linear dispersion space-time block codes using modified SQRD decomposition

Joaquín Cortez González, Ramón René Palacio Cinco, Erica C. Ruíz Ibarra, Adolfo Espinoza, Armando García Berumen


In this work, a novel architecture for detection of Hybrid MIMO Systems over Rayleigh fading channels is presented. The Hybrid MIMO scheme consists of one Alamouti space-time block code unit, plus  antennas operating as layers of V-BLAST in the transmitter. The proposed receiver is based on the algorithm Sorted QR decomposition (SQRD) presented in (Wubben et al., 2001). This proposal reduces significantly the complexity while maintaining the advantages of the SQRD scheme, obtaining a considerable gain in performance in terms of bit error rate (BER) at the expense of decreasing data rate.


Hybrid MIMO systems; linear dispersion space-time codes; QR decomposition

Full Text:



A. Raza, J.A. Schormans and X. Chen,etc. “KIL-BLAST: diversity and multiplexing trade-off for layered space-time architectures with cannel error estimation", Electronics Letters, vol. 40, pp. 747-749, 2004.

B. Hassibi and B. M. Hochwald, "High-rate codes that are linear in space and time," IEEE Transactions on Information Theory, vol. 48, pp. 1804-1824, 2002.

C. Meng and J. Tuqan, "PRECODED STBC-VBLAST for MIMO wireless communication systems," in Proceedings IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2007, vol. 3, pp. 337-340, April 2007.

D. Wubben, R. Bonke, R.Rinas. “Efficient algorithm for decoding layered space-time codes,” Electronics Letters, vol. 37, pp. 1348-150, 2001.

E. Telatar, “Capacity of multiple-antenna Guassian channels,” European Trans. Telecomm, vol. 10, No. 6, 1999, pp. 585-595.

H. Kim, H. Park, T. Kim and I. Eo, "Performance Analysis of a DSTTD System with Decision-Feedback Detection", Proceedings IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2006, vol. 4, pp. 749-752, May 2006.

J. Cortez, M. Bazdresh, D. Torres and R. Parra, “An effcient detector for non-orthogonal Space-Time Block Codes with Receiver Antenna Selection," in Proceedings of 18th Annual International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC 2007), Athens, Greece, 2007.

Longoria Omar, Sanchez Alberto, Cortez Joaquín, Bazdresch Miguel, Parra Ramón. “Linear Dispersion Codes Generation from Hybrid STBC-VBLAST Architectures”. In Proceedings of IEEE 4th International Conference on Electrical and Electronics Engineering 2007, pp. 142-145, Mexico DF, September 2007.

Miguel Bazdresch Joaquín Cortez, Omar Longoria, Ramón Parra. “A Family of Hybrid Space-Time Codes for MIMO Wireless Communications”. Journal of Applied and Research Technology, Vol. 10, No. 2, pp. 122-142, 2012.

M.T. Le, V. Pham, L. Mai and G. Yoon, "Low-complexity maximum-likelihood for four transmit-antenna quasi- orthogonal space-time block code" IEEE Transactions on Communications, vol. 53, No. 11, pp. 1817-1821, 2005.

S. Johansson, M. Nilsson and P. Nilsson "An OFDM timing synchronization ASIC", in Proceedings of the 7th IEEE International Conference on Electronics, Circuits and Systems, vol. 1, p324-327, 2000.

S. M. Alamouti, “A simple transmit diversity technique for wireless communications," IEEE Journal on Selected Areas in Communications, vol. 16, No. 8, 1998, pp. 1451-1458.

T. Mao and M. Motani, "STBC-VBLAST for MIMO wireless communication systems," in Proceedings of International Conference on Communications ICC 2005, vol. 4, pp. 2266-2270, May 2005.

V. Tarokh, H. Jafarkhani, and A. R. Calderbank, “Space-time block codes from orthogonal designs,” IEEE Transactions on Information Theory, vol. 45, 1999, pp. 1456-1470.

Y. Jiang, J. Li and W. Hager, "Joint transceiver design for MIMO communications using Geometric Mean Decomposition,"IEEE Transactions on Signal Processing, vol. 53, pp. 3791-3803, 2005.



  • There are currently no refbacks.

Copyright (c) 2017 Nova Scientia

Nova Scientia, year 9, issue 19, November 2017 – April 2018, is a biannual journal printed by the Universidad De La Salle Bajío, with its address: Av. Universidad 602, Col. Lomas del Campestre, C. P. 37150, León, Gto. México. Phone: (52) 477 7108500, e-mail: Chief editor: Ph.D. Rolando Pérez Álvarez and Ph.D. Ramiro Rico Martínez. ISSN 2007 - 0705. Copyright for exclusive use No. 04-2008-092518225500/102, Diffusion rights via computer net 04 - 2008 – 121011584800-203 both granted by the Instituto Nacional del Derecho de Autor.

Editor responsible for updating this issue: Direction of Research Department of the Universidad De La Salle Bajío, last updated on Nov 2th, 2017.