dc.contributor.author | Kulasekera, S | |
dc.contributor.author | Madanayake, A | |
dc.contributor.author | Wijenayake, C | |
dc.contributor.author | Bayer, FM | |
dc.contributor.author | Suarez, D | |
dc.contributor.author | Cintra, RJ | |
dc.date.accessioned | 2018-09-19T19:43:42Z | |
dc.date.available | 2018-09-19T19:43:42Z | |
dc.identifier.uri | http://dl.lib.mrt.ac.lk/handle/123/13571 | |
dc.description.abstract | The two-dimensional (2-D) discrete Fourier transform (DFT) is widely used in digital signal processing (DSP) and computing applications. Fast Fourier transforms (FFTs) are widely used as low-complexity algorithms for the computation of the DFT as it reduces the required computation operations from O(N2) to O(N log2 N). The multiplicative complexity is used as a benchmark in comparing different algorithms as it affects the circuit complexity, chip area and power. This paper introduces a new class of multiplierless hardware algorithm consisting only of arithmetic adder circuits that closely approximates the 2-D version of the 8-point DFT. The paper discusses the theory behind the proposed new algorithm, with the DFT presented in the form of an 8 × 8 matrix. Furthermore it provide a multi-beam RF aperture application example where the 2-D DFT approximation has been used to closely obtain the antenna array patterns. | en_US |
dc.language.iso | en | en_US |
dc.subject | DSP | en_US |
dc.subject | FFT | |
dc.subject | arrays | |
dc.subject | beamforming, | |
dc.subject | aperture | |
dc.subject | multibeam. | |
dc.title | Multi-beam 8 × 8 RF aperture digital beamformers using mMultiplierless 2-D FFT appro ximations | en_US |
dc.type | Conference-Abstract | en_US |
dc.identifier.year | 2015 | en_US |
dc.identifier.conference | Moratuwa Engineering Research Conference - MERCon 2015 | en_US |
dc.identifier.place | Moratuwa, Sri Lanka | en_US |
dc.identifier.email | arjuna@uakron.edu | en_US |
dc.identifier.email | c.wijenayake@unsw.edu.au | en_US |
dc.identifier.email | fabiobayer@gmail.com | en_US |
dc.identifier.email | dmsuarezv@unal.edu.co | en_US |
dc.identifier.email | rjdsc@stat.ufpe.org | en_US |