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Wordlength Optimization of a Pipelined FFT Processor

This paper describes the optimization of the word lengths in an 8 k-points pipelined FFT processor. The word lengths can be freely chosen since the FFT is implemented as a full custom ASIC. According to the specification, input and output word lengths are 12 bits but improved performance on be achieved by using a longer wordlength internally. Increased wordlength means increased size, both for mem

Modeling and exploration of a reconfigurable architecture for digital holographic imaging

The use of coarse-grain reconfigurable architectures (CGRA) is a suitable alternative for hardware acceleration in many application areas, including digital holographic imaging. In this paper, we propose a CGRA-based system with an array of processing and memory cells, which communicate using a local and a global communication network, and a stream memory controller to manage data transfers to ext

The Vertical Distribution of Roots, Mycorrhizal Mycelia and Nutrient Acquisition in Mature Forest Trees

Popular Abstract in Swedish Den vertikala fördelningen av näringsupptaget hos gran (Picea abies (L.) Karst.), bok (Fagus sylvatica L.) och skogsek (Quercus robur L.) och har undersökts i södra Skandinavien. Två olika metoder har används. Med den första metoden uppskattades trädets näsringsupptag på olika markdjup genom att bestämma fördelningen av rötterna och det externa ectomycorrhizamycelet (EEThe vertical distribution of the nutrient uptake of Norway spruce (Picea abies (L.) Karst.), European beech (Fagus sylvatica L.) and pedunculate oak (Quercus robur L.) has been investigated in southern Scandinavia. Two approaches were employed. The first involved estimation of the nutrient uptake capacity of the trees at different soil depths by determining the distributions of roots, external ect

Hybrid model of an evaporative gas turbine power plant utilizing physical models and artificial neural networks

Traditionally, when process identification, monitoring and diagnostics are carried out for power plants and engines, physical modeling such as heat and mass balances, gas path analysis, etc. is utilized to keep track of the process. This type of modeling both requires and provides considerable knowledge of the process. However, if high accuracy of the model is required, this is achieved at the exp

Envar sin egen Falstaff, fakir

Antologi med nytryck av biografiska och litteraturvetenskapliga texter om Axel Wallengren ("Falstaff, fakir") och dennes författarskap, tidigare publicerade i spridda skrifter under perioden 1901-1989. Förord av Carlhåkan Larsén. Bildurval, bildtexter och författarpresentationer av Fredrik Tersmeden.