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This paper is part of a conceptual study of a multiuser OFDM system. In previous reports we have examined requirements for the air interface and presented uncoded performance (in terms of bit error rate) for the uplink of such systems. In this report we adopt the user allocation structure from the previous parts of the study and examine the role of channel coding. We present performance simulation

Requirements Engineering and Testing are considered inseparable and together enable successful projects. One could make a statement that serious negligence of any of the two will bring catastrophic consequences for the project, delays, failures and unhappy customers. Thus, alignment and cooperation between the two are not only recommended but highly required for contemporary complex software and s

The chapter is based on the assumption that processes outside awareness play a prominent role in the evolvement of creative ideas. The assumption is elucidated within the frame of percept-genetic theory implying that our perceptual world is constructed by processes from within our subjective self. The reasoning is supported by empirical data.

This article will summarise the evaluation of four CFD software codes (CFX, FDS4, SMAFS and SOFIE). Evaluation was performed by means of comparing the simulation data with experimental scenarios. The scenarios were chosen to represent scenarios frequently assessed using fire safety design based on performance. The greatest difficulty during validation of CFD-codes is to find well documented releva

A new Reynolds stress transport model (RSTM) aimed for engineering applications is proposed with consideration of near-wall turbulence. This model employs the SSG pressure strain term, the ω equation, and the SST model for the shear stresses at the near-wall region (say y⁺ less than or equal 30). The models are selected based on the following merits: The SSG RSTM model performs well in

In this paper a non-line-of-sight (NLOS) path-loss and fading model developed for vehicle-to-vehicle (V2V) communication at 5:9 GHz is validated with independent and realistic measurement data. The reference NLOS model is claimed to be flexible and of low complexity, and incorporates specific geometric aspects in a closed-form expression.We validated the accuracy of the model with the help of real

Among the formats introduced in Swedish radio in the 1930s, the theatre series about contemporary family life has turned out an exceptional survivor. The first family series, ”Ingenjör Björck med familj” (1936-1943), was followed by 22 related series during the rest of the 20th century, each cultivating its own intimate and ritual based bond with the listeners. The dissertation ”Höra hemma. Familj

This work presents an overview of four different approaches to the problem of future contingency and determinism in temporal logics. All of them are bivalent, viz. they share the assumption that propositions concerning future contingent facts have a determinate truth-value (true or false). We introduce Ockhamism, Peirceanism, Actualism and T x W semantics, the four most relevant bivalent alternati