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An analysis of two-dimensional pilot-symbol assisted modulation for OFDM

In this paper we analyze two-dimensional (2D) pilot-symbol assisted modulation (PSAM) for wireless orthogonal frequency-division multiplexing (OFDM). 2D-PSAM has been suggested for wireless OFDM by several authors and is included in a preliminary draft of the standard for European digital video broadcast. We generalize the analysis of single-carrier PSAM to the 2D time-frequency lattice of OFDM. W

Staten, företagen och arbetskraftsinvandringen - en studie av invandringspolitiken i Sverige och rekryteringen av utländska arbetare 1960-1972

This dissertation investigates the labour migration from Southern Europe to Sweden, and the changes in Swedish immigration policy between 1960 and 1972. The overall ambition is to bring both the state and employers into the analysis of immigration policy and the recruitment of foreign labour - not separately but together in one study. The dissertation is divided into two main parts. The first part

Field trials with ISA in Hungary

Field experiments with ISA (Intelligent Speed Adaptation) has been carried out in the city of Debrecen, Hungary. Twenty vehicles were equipped with two kinds of ISA systems: 1) support via an active accelerator pedal and 2) warning via beep signals and flashing red light when exceeding the speed limit. Speed was continually logged in all vehicles and the test drivers were interviewed. The results

Feeding ideals and the work of feeding in Swedish families: interactions of mothers and children around the dinner table

Feeding norms are pervasive, and ideals of healthy food increase in relation to advice from commercial and government actors. Here we address how perceptions of “proper” food in Swedish family households are formed in relation to children’s preferences. We argue that what is served in today’s Swedish families should be understood in the context of discourse related to food and feeding and as a con