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Codes constructed from connected spatially coupled low-density parity-check code (SC-LDPCC) chains are proposed and analyzed. It is demonstrated that connecting coupled chains results in improved iterative decoding performance. The constructed protograph ensembles have better iterative decoding thresholds compared to an individual SC-LDPCC chain and require less computational complexity per bit wh
Context-aware computing is a typical paradigm of ubiquitous computing and aims to provide context information anywhere and anytime. Context data management which handles gathering, processing, managing, evaluating and disseminating context information is the heart of context-aware system. Context provision and acquisition, thus, become crucial for context-aware computing. In order to decouple appl
In application areas that process stream-like data such as multimedia, networking and DSP, the pipelined concurrent processing is frequently represented as a dataflow network of communicating computational kernels connected by FIFO queues. However, while dataflow is a natural medium for conceptualizing and modeling stream-processing systems, its adoption as a programming methodology has been hinde
Studien berör användningen av sociala kategorier i polisiär och statlig verksamhet, och visar att social kategorisering leder till en rad problematiska konsekvenser. Efter uppmärksammandet av polisens så kallade Romregister uppstod en debatt om polisens arbetsmetoder och huruvida fördomar förekom inom den polisiära organisationen. Polisiära och statliga insatser som riktar sig mot en särskild grupThis thesis discusses the use of stereotypes and social categories in the police force. The study illustrates how stereotypes inevitably lead to several problematic consequences. Following the uncovering of the so called ”Romani-register”, a debate occurred whether stereotypes existed in the Swedish police force. Targeted police efforts and government initiatives are however a consequence of the c
Designing decorrelated MIMO antennas in small mobile terminals at frequencies below 1 GHz is challenging since more than one antenna tend to excite the single resonant mode available to a typical chassis structure. This challenge increases even further when multiple frequency bands are required from each antenna. Recently, a design framework to obtain efficient and decorrelated MIMO antennas based
The thesis covers different topics related to model predictive control (MPC) and particularly distributed model predictive control (DMPC). One topic of the thesis is gradient-based optimization algorithms for solving the optimization problem arising in DMPC in a distributed manner. The underlying idea is to solve the optimization problem in distributed fashion using dual decomposition, which is a
Abstract in UndeterminedA millimeter-wave (mm-wave) impulse radio is an attractive alternative to existing high-speed mm- wave radio systems because of the potential for a simpler transceiver architecture. This paper studies the feasibility of a mm-wave impulse radio system for home and office use by considering state-of-the- art transceivers and multiple-input multiple-output measured propagation
A primary functionality of context aware applications is the retrieval of different types of context data from various context sources and adapting their behavior accordingly. In order to facilitate context aware application development, a context aware middleware must provide an effective context data management and lookup strategy. The use of a traditional index for indexing dynamic context data
Context-aware applications generally need to retrieve various kinds of dynamic context data from a large number of context sources. A middleware managing context sources must provide an efficient context lookup mechanism to ease application development. In this paper, we categorize the context sources as operating spaces and propose semantic peer-to-peer overlays over these spaces to accelerate dy
We compare LDPC block and LDPC convolutional codes with respect to their decoding performance under low decoding latencies. Protograph based regular LDPC codes are considered with rather small lifting factors. LDPC block and convolutional codes are decoded using belief propagation. For LDPC convolutional codes, a sliding window decoder with different window sizes is applied to continuously decode
Abstract—Service Level Agreements (SLA) are considered a good practice not only for IT outsourcing but also for IT management within an organisation. In this paper we study the usage of SLAs in municipal IT management. Municipal IT management traditionally involves a large organisation, often with a low IT maturity, but with high requirements on software quality and information security. In this s
Generalized Frequency Division Multiplexing (GFDM) is a recent multi carrier modulation technique that can provide low out-of-band radiation, which makes it an attractive choice for the PHY layer of cognitive radios operating in fragmented TV white spaces. Primary, incumbent signals can now be protected with a geo-location database query mechanism. Even then, sensing opportunistic users (OU) opera
Intellectual property law seeks to promote society's industrial development through the recognition of patents. The logic of granting patent protection is clear-cut: Patents provide incentives for developing new technology. The lack of an adequate legal protection for innovations would slow progress and the benefits it brings. Without legal protection, companies would be unlikely to spend sign
If as Hersch Lauterpact stated in the most overly quoted Humanitarian Lawyers phrase in Oppenheim's International Law, International Humanitarian Law lies at the vanishing point of International Law, then I would posit that it is only the continuance of education particularly education in LOAC that prevents it from vanishing altogether. The preservation of the buildings housing that education
Vid utformningen av rätten att överklaga och prövningen i andra instans finns en mängd aspekter att ta hänsyn till. Dessa ställer på sätt och vis olika krav på prövningens utformning. Detta gäller såväl nationellt som internationellt. Vid utformningen av rätten att överklaga och prövningen i andra instans är det naturligt att landets konventionsåtaganden i form av art. 2 i sjunde tilläggsprotokollWhen forming the right to appeal and the trial in second instance there are a number of aspects to take into account and the different aspects sets, in certain ways, different demands on the form of the trial. This goes both nationally and internationally. When forming the right to appeal and the trial of second instance, it is natural to examine the countries obligations to Art. 2 of the Seventh
