Broadband MIMO beamforming for frequency selective channels using the sequential best rotation algorithm

Davies, M., Lambotharan, S., Chambers, J. A. and McWhirter, John ORCID: https://orcid.org/0000-0003-1810-3318 2008. Broadband MIMO beamforming for frequency selective channels using the sequential best rotation algorithm. Presented at: 67th IEEE Vehicular Technology Conference, Singapore, 11-14 May 2008. Vehicular Technology Conference, 2008. VTC Spring 2008. (Singapore). Piscataway, NJ: IEEE, 1147 - 1151. 10.1109/VETECS.2008.243

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Abstract

For a narrowband multi-input multi-output (MIMO) system the singular value decomposition has the ability to provide multiple spatial channels for data transmission. We extend this work to obtain spatial diversity techniques for frequency selective MIMO systems using a polynomial matrix decomposition known as the sequential best rotation using second order statistics (SBR2) method. This algorithm diagonalizes a MIMO frequency selective channel yielding various spatial modes for data transmission. We evaluate the diversity performance of the dominant channel provided by the SBR2 based broadband decomposition and compare it with a transmit antenna selection method (TAS) and a MIMO orthogonal frequency-division multiplexing (OFDM) singular value decomposition (SVD) based approach. Simulation results show SBR2 significantly outperforms the average bit error rate (BER) of TAS, making it very suitable for time division multiple access (TDMA) and code division multiple access (CDMA) systems. SBR2 and MIMO-OFDM systems are shown to have identical BER performance, confirming the efficiency of the proposed low delay spatial-temporal scheme.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	IEEE
ISBN:	9781424416448
Last Modified:	18 Oct 2022 14:05
URI:	https://orca.cardiff.ac.uk/id/eprint/16470

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