A channel capacity is non-convex if the capacity of a mixture of different quantum channels exceeds the mixture of the individual capacities. This implies that there is a concrete communication scenario in which a sender can increase the transmission rate by forgetting which channel acts on the channel input. Previously, this surprising property had only been shown for the quantum capacity. Her...

Time Division Duplex systems provide great flexibility that can be used to implement asymmetrical links. Adverse interference conditions easily arise, however. Especially if different asymmetries are required in neighbouring cells. This paper assesses the performance of TDD mode systems in evironments that require heterogeneous link asymmetry. In particular the Soft Switching Point and Disjoint...

A multibeam adaptive antenna at a basestation can separate spectrally and temporally overlapped signals in a TDMA mobile communication system. Thus, we can achieve space division multiple access (SDMA), which increases the channel capacity. For an uplink channel, weight vectors can be determined by applying a conventional method. In this paper, we consider the weight vectors for a downlink chan...

This article argues that, properly analysed, the common law and the European Convention on Human Rights (ECHR) march hand in hand with the provisions of the Mental Capacity Act 2005 (MCA 2005) so as to impose a set of requirements on litigation friends acting for the subject of applications of proceedings before the Court of Protection ('P') which are very different to those currently understoo...

Bottleneck detection in manufacturing is the key to improving production efficiency and stability in order to improve capacity. Yet common bottleneck detection methods in industry and academia lack either accuracy or practicability, or both, for dynamic systems. The new methodology is conducted by the observation of processes and inventories. Blocked processes and full inventories indicate a do...

Adjacent channel interference (ACI) can result in a reduced network capacity in a multioperator WCDMA/FDD environment. This paper is devoted to the study of the ACI by using a static simulator. Simulations were performed in order to identify particular scenarios and network compositions where ACI plays a major role in the system capacity. On the basis of the results, the authors identify the be...