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neshatpour--katayoun
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VLSI Architecture Implementation for a 4×4 MIMO Detector Applied to the LTE
, M.Sc. Thesis Sharif University of Technology ; Shabany, Mahdi (Supervisor)
Abstract
Long Term Evolution (LTE), is a standard for wireless communication of high-speed data for mobile phones and data terminals. Increasing the capacity, improved support for mobility and simplified architecture are a number of its goals. As many other standardas LTE uses Multiple Input-Multiple Output (MIMO), which is a system that uses multple antennas in the transmitter and the reciver. LTE has adopted single carrieer-frequency division multiple access (SC-FDMA) for the uplink multiple access scheme in order to decrease peak to average power ratio (PAPR). In SC-FDMA a discrete Fourier transform (DFT) is performed on the signlas before going through the OFDMA modulation.
A novel...
A novel...
A high-throughput VLSI architecture for hard and soft SC-FDMA MIMO detectors
, Article IEEE Transactions on Circuits and Systems I: Regular Papers ; Volume 62, Issue 3 , January , 2015 , Pages 761-770 ; 15498328 (ISSN) ; Shabany, M ; Gulak, G ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2015
Abstract
This paper introduces a novel low-complexity multiple-input multiple-output (MIMO) detector tailored for single-carrier frequency division-multiple access (SC-FDMA) systems, suitable for efficient hardware implementations. The proposed detector starts with an initial estimate of the transmitted signal based on a minimum mean square error (MMSE) detector. Subsequently, it recognizes less reliable symbols for which more candidates in the constellation are browsed to improve the initial estimate. An efficient high-throughput VLSI architecture is also introduced achieving a superior performance compared to the conventional MMSE detectors with less than 28% added complexity. The performance of...
A low-complexity high-throughput ASIC for the SC-FDMA MIMO detectors
, Article ISCAS 2012 - 2012 IEEE International Symposium on Circuits and Systems, 20 May 2012 through 23 May 2012 ; 2012 , Pages 3065-3068 ; Mahdavi, M ; Shabany, M ; IEEE Circuits and Systems Society ; Sharif University of Technology
IEEE
2012
Abstract
A novel low-complexity detection scheme is proposed for the multiple-input multiple-output (MIMO) single-carrier frequency division-multiple access (SC-FDMA) systems, which is suitable for ASIC implementations. The proposed detection scheme makes an initial estimate of the transmitted signal based on a minimum mean square error (MMSE) frequency domain equalizer (FDE) detector and finds symbols with higher error probability among them and browse more candidates for them in the constellation to improve their initial estimate. Based on this approach, architecture is introduced that achieves superior bit error rate (BER) performance compared to the conventional MMSE FDE. The performance of the...